Copyright 2013 AIA
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PRODUCT MASTERSPEC LICENSED BY ARCOM TO BAPI; BUILDING AUTOMATION
PRODUCTS, INC.
Copyright 2013 by The American Institute of Architects (AIA)
Exclusively published and distributed by Architectural Computer Services, Inc. (ARCOM) for the AIA
This Product MasterSpec Section is licensed by ARCOM to BAPI; Building Automation Products, Inc.
("Licensee").
This Product MasterSpec Section modifies the original MasterSpec text.
Revisions made to the original MasterSpec text are made solely by the Licensee and are not endorsed by,
or representative of the opinions of, ARCOM or The American Institute of Architects (AIA). Neither
AIA nor ARCOM are liable in any way for such revisions or for the use of this Product MasterSpec
Section by any end user. A qualified design professional should review and edit the document to suit
project requirements.
For more information, contact BAPI; Building Automation Products, Inc., 750 North Royal Avenue,
Gays Mills, WI 54631; Phone: (608) 635-4800; Website: www.bapihvac.com.
For information about MasterSpec contact ARCOM at (800) 424-5080 or visit www.MasterSpec.com.
SECTION 230923.16 - GAS INSTRUMENTS
TIPS:
To view non-printing Editor's Notes that provide guidance for editing, click on Masterworks/Single-File
Formatting/Toggle/Editor's Notes.
To read detailed research, technical information about products and materials, and coordination checklists,
click on Masterworks/Supporting Information.
Revise this Section by deleting and inserting text to meet Project-specific requirements.
Verify that Section titles referenced in this Section are correct for this Project's Specifications; Section
titles may have changed.
PART 1 - GENERAL
1.1
RELATED DOCUMENTS
Retain or delete this article in all Sections of Project Manual.
A.
Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections, apply to this Section.
GAS INSTRUMENTS
230923.16 - 1
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1.2
SUMMARY
A.
Section Includes the Following Gas Instruments:
1.
2.
3.
4.
5.
B.
Carbon-dioxide sensors and transmitters.
Combination carbon-dioxide and VOC sensors and transmitters.
Single-point oxygen monitoring system.
Multipoint carbon-monoxide monitoring system.
VOC sensors and transmitters.
Related Requirements:
Retain subparagraphs below to cross-reference requirements Contractor might expect to find in this
Section but are specified in other Sections.
1.
2.
1.3
Section 230923 "Direct-Digital Control System for HVAC" for control equipment and
software, relays, electrical power devices, uninterruptible power supply units, wire, and
cable.
Section 230993 "Sequence of Operations for HVAC Controls" for requirements that
relate to Section 230923.16.
DEFINITIONS
A.
Barometric Compensation: Continuously and automatically compensates Carbon Dioxide
measurement for altitude or inclement weather air pressure changes.
B.
NDIR: Nondispersive infrared.
C.
VOC: Volatile Organic Compounds.
D.
Dry Contacts: Contacts galvanically isolated from any other circuit element.
1.4
ACTION SUBMITTALS
A.
Product Data: For each type of product, including the following:
1.
2.
3.
Operating characteristics, electrical characteristics, and furnished accessories indicating
process operating range, accuracy over range, control signal over range, default control
signal with loss of power, calibration data specific to each unique application, electrical
power requirements, and limitations of ambient operating environment, including
temperature and humidity.
Installation instructions, including factor affecting performance.
Product description with complete technical data, performance curves, product
specification sheets.
Retain "LEED Submittals" Paragraph below for projects applying for LEED certification.
GAS INSTRUMENTS
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B.
LEED Submittals: Product data of carbon-dioxide instruments for use in showing compliance
with requirements in ASHRAE 62.1.
C.
Shop Drawings:
1.
2.
3.
Include plans, elevations, sections, and [mounting ]details.
Include diagrams for power, signal, and control wiring.
Number-coded identification system for unique identification of wiring, cable, and tubing
ends.
Retain "Samples" Paragraph below for single-stage Samples, with a subordinate list if applicable.
D.
1.5
Samples: For each exposed product installed in finished space.
INFORMATIONAL SUBMITTALS
Retain "Coordination Drawings" Paragraph below for situations where limited space necessitates
maximum utilization for efficient installation of different components or if coordination is required for
installation of products and materials by separate installers. Coordinate paragraph with other Sections
specifying products listed below. Preparation of coordination drawings requires the participation of each
trade involved in installations within the limited space.
A.
Coordination Drawings: Plan drawings and corresponding product installation details, drawn to
scale, on which wall-mounted instruments located in finished space are shown and coordinated
with each other, showing relationship to light switches, fire alarm devices, and other installed
devices using input from installers of the items involved.
B.
Product Test Reports: For each product, for tests performed by [manufacturer and witnessed
by a qualified testing agency] [a qualified testing agency].
1.6
CLOSEOUT SUBMITTALS
A.
Operation and Maintenance Data: For gas instruments to include in operation and maintenance
manuals.
PART 2 - PRODUCTS
See Editing Instruction No. 1 in the Evaluations for cautions about named manufacturers and products.
For an explanation of options and Contractor's product selection procedures, see Section 016000 "Product
Requirements."
2.1
CARBON-DIOXIDE SENSORS AND TRANSMITTERS
A.
Carbon Dioxide Wall Sensors with Optional Display:
The BAPI CO2 Sensor for periodic occupancy is an accurate and reliable way of incorporating demandcontrolled ventilation into a building’s HVAC strategy.
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The non-dispersive infrared technology has been optimized for areas that are periodically unoccupied and
features automatic background calibration over a long time period to reduce drift.
Altitude compensated / built-in barometric sensor that continuously compensates the output for accurate
readings despite inclement weather or the altitude of the installation (air pressure can change the output of
most CO2 sensors by as much as 17 percent).
Available as CO2 alone, or with optional temperature sensing, temperature setpoint, occupant override
and humidity sensing.
Large, field adjustable (degree F or degree C) and easy to read display alternates between the measured
values (CO2, Temperature or Humidity).
Measures CO2 in a range of 0 to 2,000 ppm with a field selectable output of 0-5 or 0-10 V dc.
http://www.bapihvac.com/products/end-user/co2-room-co2-transmitter-in-bapi-stat-3-enclosure-periodicoccupancy/
1.
Periodic Occupancy [Type 1] <Insert drawing designation>:
a.
Basis-of-Design Product: Subject to compliance with requirements, provide
Building Automation Products, Inc.; BAPI model BS3 ACD CO2 or comparable
product by one of the following:
1)
2)
b.
c.
d.
e.
f.
Viasala
<Insert manufacturer's name>.
Compensated for barometric pressure.
Non-dispersive infrared (NDIR) technology optimized for areas that are
periodically unoccupied using automatic background calibration over an extended
period to reduce drift.
Measurement range of 0-2000 ppm to selectable 0-5 V dc or 0-10 V dc output
range.
ABS plastic case.
Provide the following options where called for or required to meet the specified
sequences of operation:
1)
2)
3)
4)
5)
6)
Digital Display: 0.76 inch (19.3 mm) for CO2 and optional humidity and
temperature sensors.
Three color LED or display arrows for ready indication of acceptable,
moderate, or high CO2 level concentrations.
Integral 2 percent accuracy relative humidity sensor with selectable 05 V dc, 0-10 V dc, or 2-10 V dc output range linear to relative humidity
level.
Integral space temperature sensor.
Integral space temperature setpoint adjustment.
Local pushbutton for override of occupancy schedules.
The BAPI CO2 Sensor for continuous occupancy is an accurate and reliable way of incorporating
demand-controlled ventilation into a building’s HVAC strategy.
GAS INSTRUMENTS
230923.16 - 4
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The non-dispersive infrared technology of the “24/7” unit has been optimized for areas that are
continuously occupied.
A dual-channel optical system and three-point calibration process for enhanced stability, accuracy and
reliability.
Altitude compensated / built-in barometric sensor that continuously compensates the output for accurate
readings despite inclement weather or the altitude of the installation (air pressure can change the output of
most CO2 sensors by as much as 17 percent).
Optional three color LED display on front of unit to indicate the CO2 level as “good, fair, poor”.
It measures the CO2 in a range of 0 to 2,000 ppm with a field selectable output of 0-5 or 0-10 V dc.
http://www.bapihvac.com/products/end-user/co2-247-room-co2-transmitter-in-bapi-stat-4-enclosureconstant-occupancy/
2.
Continuous Occupancy [Type 2] <Insert drawing designation>:
a.
Basis-of-Design Product: Subject to compliance with requirements, provide
Building Automation Products, Inc.; BAPI model BS4 DCD CO2 or comparable
product by one of the following:
1)
2)
b.
c.
d.
e.
f.
Compensated for barometric pressure.
Non-dispersive infrared (NDIR) technology optimized for areas that are
continuously occupied using dual-channel optical system and three-point
calibration process.
Measurement range of 0-2000 ppm to selectable 0-5 V dc or 0-10 V dc output
range.
ABS plastic case.
Provide the following options where called for or required to meet the specified
sequences of operation:
1)
2)
3)
4)
5)
6)
B.
Viasala
<Insert manufacturer's name>.
Digital Display: 0.76 inch (19.3 mm) for CO2 and optional humidity and
temperature sensors.
Three color LED for ready indication of acceptable, moderate, or high CO2
level concentrations.
Integral 2 percent accuracy relative humidity sensor with selectable 05 V dc, 0-10 V dc, or 2-10 V dc output range linear to relative humidity
level.
Integral space temperature sensor.
Integral space temperature setpoint adjustment.
Local pushbutton for override of occupancy schedules.
Carbon Dioxide Wall Sensors without Display.
GAS INSTRUMENTS
230923.16 - 5
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The BAPI CO2 Sensor for periodic is an accurate and reliable way of incorporating demand-controlled
ventilation into a building’s HVAC strategy.
The non-dispersive infrared technology has been optimized for areas that are periodically unoccupied and
features automatic background calibration over a long time period to reduce drift.
Altitude compensated / built-in barometric sensor that continuously compensates the output for accurate
readings despite inclement weather or the altitude of the installation (air pressure can change the output of
most CO2 sensors by as much as 17 percent).
Optional three color LED display on front of unit to indicate the CO2 level as “good, fair, poor”.
Measures CO2 in a range of 0 to 2,000 ppm with a field selectable output of 0-5 or 0-10 V dc.
http://www.bapihvac.com/products/end-user/co2-room-co2-transmitter-in-bapi-stat-4-enclosure-periodicoccupancy/
1.
Periodic Occupancy [Type 1] <Insert drawing designation>:
a.
Basis-of-Design Product: Subject to compliance with requirements, provide
Building Automation Products, Inc.; BAPI model BS4 ACD CO2 or comparable
product by one of the following:
1)
2)
b.
c.
d.
e.
f.
Viasala
<Insert manufacturer's name>.
Compensated for barometric pressure.
Non-dispersive infrared (NDIR) technology optimized for areas that are
periodically unoccupied using automatic background calibration over an extended
period to reduce drift.
Measurement range of 0-2000 ppm to selectable 0-5 V dc or 0-10 V dc output
range.
ABS plastic case.
Provide the following options where called for or required to meet the specified
sequences of operation:
1)
Three color LED for ready indication of acceptable, moderate, or high CO2
level concentrations.
The BAPI CO2 Sensor for continuous occupancy is an accurate and reliable way of incorporating
demand-controlled ventilation into a building’s HVAC strategy.
The non-dispersive infrared technology of the “24/7” unit has been optimized for areas that are
continuously occupied.
A dual-channel optical system and three-point calibration process for enhanced stability, accuracy and
reliability.
GAS INSTRUMENTS
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Altitude compensated / built-in barometric sensor that continuously compensates the output for accurate
readings despite inclement weather or the altitude of the installation (air pressure can change the output of
most CO2 snesors by as much as 17 percent).
Optional three color LED display on front of unit to indicate the CO2 level as “good, fair, poor”.
It measures the CO2 in a range of 0 to 2,000 ppm with a field selectable output of 0-5 or 0-10 V dc.
http://www.bapihvac.com/products/end-user/co2-247-room-co2-transmitter-in-bapi-stat-4-enclosureconstant-occupancy/
2.
Continuous Occupancy [Type 2] <Insert drawing designation>:
a.
Basis-of-Design Product: Subject to compliance with requirements, provide
Building Automation Products, Inc.; BAPI model BS4 DCD CO2 or comparable
product by one of the following:
1)
2)
b.
c.
d.
e.
f.
Compensated for barometric pressure.
Non-dispersive infrared (NDIR) technology optimized for areas that are
continuously occupied using dual-channel optical system and three-point
calibration process.
Measurement range of 0-2000 ppm to selectable 0-5 V dc or 0-10 V dc output
range.
ABS plastic case.
Provide the following options where called for or required to meet the specified
sequences of operation:
1)
C.
Viasala
<Insert manufacturer's name>.
Three color LED for ready indication of acceptable, moderate, or high CO2
level concentrations.
Carbon Dioxide Duct Sensors.
An accurate and reliable way to incorporate demand controlled ventilation into a building’s HVAC
strategy.
Measures CO2 range from 0 to 2,000 ppm with a field selectable output of 0 to 5 or 0 to 10 V dc.
The non-dispersive infrared technology has been optimized for periodically unoccupied areas and features
automatic background calibration over a long time period to reduce drift.
Altitude compensated / built-in barometric sensor that continuously compensates the output for accurate
readings despite inclement weather or the altitude of the installation (air pressure can change the output of
most CO2 sensors by as much as 17 percent).
BAPI’s CO2 Duct Sensor samples duct air using an aspiration tube. Moving air from the duct enters the
tube, is forced into the BAPI-Box enclosure and exits through the other half of the tube. As long as there
is air movement in the duct, air is continuously exchanged.
GAS INSTRUMENTS
230923.16 - 7
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Optional indication of the CO2 level as “Good, Fair or Poor” is available as a three-color LED on the
front of the unit.
http://www.bapihvac.com/products/end-user/co2-duct-carbon-dioxide-transmitter-periodic-occupancy/
1.
Periodic Occupancy [Type 1] <Insert drawing designation>:
a.
Basis-of-Design Product: Subject to compliance with requirements, provide
Building Automation Products, Inc.; BAPI model BB ACD CO2 or comparable
product by one of the following:
1)
2)
b.
c.
d.
e.
f.
Viasala
<Insert manufacturer's name>.
Compensated for barometric pressure.
Non-dispersive infrared (NDIR) technology optimized for areas that are
periodically unoccupied using automatic background calibration over an extended
period to reduce drift.
Measurement range of 0-2000 ppm to selectable 0-5 V dc or 0-10 V dc output
range.
ABS plastic case.
Provide the following options where called for or required to meet the specified
sequences of operation:
1)
Three color LED for ready indication of acceptable, moderate, or high CO2
level concentrations.
An accurate and reliable way to incorporate demand controlled ventilation into a building’s HVAC
strategy.
The non-dispersive infrared technology of the “24/7” unit has been optimized for continuously occupied
areas.
Dual-channel optical system and three-point calibration process for enhanced stability, accuracy and
reliability.
Altitude compensated / built-in barometric sensor that continuously compensates the output for accurate
readings despite inclement weather or the altitude of the installation (air pressure can change the output of
most CO2 sensors by as much as 17 percent).
BAPI’s CO2 Duct Sensor samples duct air using an aspiration tube. Moving air from the duct enters the
tube, is forced into the BAPI-Box enclosure and exits through the other half of the tube. As long as there
is air movement in the duct, air is continuously exchanged. tube.
Optional indication of the CO2 level as “Good, Fair or Poor” is available as a three-color LED on the
front of the unit.
Measures the CO2 in a range of 0 to 2,000 ppm with a field selectable output of 0 to 5 or 0 to 10 V dc.
http://www.bapihvac.com/products/end-user/co2-247-duct-co2-transmitter-constant-occupancy/
GAS INSTRUMENTS
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2.
Continuous Occupancy [Type 2] <Insert drawing designation>:
a.
Basis-of-Design Product: Subject to compliance with requirements, provide
Building Automation Products, Inc.; BAPI model BB DCD CO2 or comparable
product by one of the following:
1)
2)
b.
c.
d.
e.
f.
Compensated for barometric pressure.
Non-dispersive infrared (NDIR) technology optimized for areas that are
continuously occupied using dual-channel optical system and three-point
calibration process.
Measurement range of 0-2000 ppm to selectable 0-5 V dc or 0-10 V dc output
range.
ABS plastic case.
Provide the following options where called for or required to meet the specified
sequences of operation:
1)
D.
Three color LED for ready indication of acceptable, moderate, or high CO2
level concentrations.
Construction:
1.
2.
3.
4.
E.
Viasala
<Insert manufacturer's name>.
House electronics in an ABS plastic enclosure. Provide equivalent of NEMA 250, Type 1
enclosure for wall-mounted space applications and NEMA 250, Type 4 for duct-mounted
applications.
Optional digital display for continuous indication of carbon-dioxide concentration.
Optional three color LED for continuous indication of carbon-dioxide concentration
"Good, Fair, or Poor".
Optional arrows for continuous indication of carbon-dioxide concentration "Good, Fair,
or Poor," display units only.
Performance:
1.
2.
Measurement Range: Zero to 2000 ppm.
Accuracy:
a.
Periodic Occupancy:
1)
2)
b.
3.
4.
5.
400 to 1,250 ppm: The greater of plus or minus 30 ppm or 3 percent of
reading.
1,250 to 2,000 ppm: Plus or minus 5 percent of reading plus 30 ppm.
Continuous Occupancy: Plus or minus 75 ppm.
Temperature Dependence: Within 0.2 percent of full scale over an operating range of 32
to 122 deg F (Zero to 50 deg C).
Long-Term Stability: Less than 2 percent of full scale after more than fifteen years.
Response Time: Less than 2 minutes.
GAS INSTRUMENTS
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6.
7.
Warm-up Time: Within ten minutes.
Power:
a.
b.
F.
2.2
5 V output: 9 to 35 V dc.
10 V output: 15 to 35 V dc.
Provide calibration kit. Turn over to Owner at start of warranty period.
COMBINATION CARBON-DIOXIDE AND VOC SENSORS AND TRANSMITTERS
BAPI does not manufacture this style of sensor.
A.
Manufacturers: Subject to compliance with requirements, provide products by one of the
following:
1.
2.
Siemens Building Technologies, Inc.
<Insert manufacturer's name>.
Requirements in remaining paragraphs below are based on Siemens' "QPA20 series."
B.
Description:
1.
2.
NDIR technology or equivalent technology that provides long-term stability and
reliability.
Senses and responds to combined concentration of more than 30 contaminates commonly
found in indoor environments.
C.
Output Signal: Zero to 10-V dc.
D.
Performance:
1.
2.
3.
4.
5.
6.
Carbon-Dioxide Range: Zero to 2000 ppm.
Carbon-Dioxide Accuracy: Within 50 ppm, plus 2 percent measured value.
VOC Range: Zero to 2000 ppm.
VOC Sensitivity Ranges: Field selectable, low, normal, high.
Ambient Temperature: 32 to 122 degrees F.
Ambient Relative Humidity: 5 to 95 percent non-condensing.
E.
Enclosure: White plastic.
F.
Electrical Connections: Screw terminals.
Retain "Display" Paragraph below for display.
G.
2.3
Display: Digital, LCD.
SINGLE-POINT OXYGEN MONITORING SYSTEM
BAPI does not manufacture this style of sensor.
GAS INSTRUMENTS
230923.16 - 10
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This article is intended for single-point continuous monitoring and can be used as a guide for other gases.
See manufacturers' product literature. Where monitoring of multiple sample points of same gas is
required, consider a centralized system capable of monitoring multiple points from a single sensor suite.
See "Multipoint Carbon-Monoxide Monitoring System" Article.
A.
Manufacturers: Subject to compliance with requirements, provide products by one of the
following:
1.
2.
MSA Instrument Division.
<Insert manufacturer's name>.
Requirements in remaining paragraphs below are based on MSA's "Toxgard II Monitor System."
B.
Description:
1.
2.
3.
4.
5.
C.
Performance:
1.
2.
3.
4.
5.
6.
D.
Range: Full scale, zero to 25 percent oxygen.
Zero Drift: Within 1 percent per year.
Span Drift: Within 10 percent per year.
Repeatability: Within 1 percent of full scale.
Linearity: Within 2 percent of full scale.
Step Change Response Time: Within 12 seconds.
Enclosure:
1.
2.
3.
4.
5.
E.
System shall measure and display a single gas concentration, provide local audio and
visual alarms when preset limits are exceeded, and send output signals of gas
concentration and detected alarms.
System shall require no periodic maintenance other than periodic checking of sensor
response to a known concentration of gas.
System shall be designed to provide for installation, setup, and start-up from outside of
unit enclosure without need to open the enclosure door.
System shall be factory calibrated and ready for operation after installation.
Monitor shall be internally wired to accommodate a single-point field power connection.
NEMA 250, Type 4X.
Access to the inside of enclosure, as well as to controller, display, and wiring
connections, shall be through full-length door on front of enclosure.
Door with shatterproof window sized to provide viewing of visual display and indicator
lights.
Equip enclosure with mounting brackets for the purpose of attaching the unit to a flat
surface.
Provide door with key lock access to inside enclosure.
Controller:
1.
2.
Password-protected access through full-function keypad.
Set:
GAS INSTRUMENTS
230923.16 - 11
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a.
b.
c.
d.
e.
f.
3.
4.
5.
6.
7.
F.
Automatic return-to-normal-operation feature after calibration.
Date stamps last successful calibration.
Time and date stamps events.
Selectable lockout of output signals during calibration.
Logs minimum, maximum, and average gas concentrations over selected time intervals.
Visual Display:
1.
2.
3.
4.
Four-digit LED or backlight LCD display visible from front face of enclosure.
Value displayed shall be a direct reading of gas concentration.
Displays system status indicators.
Visual Alarm Indication:
a.
b.
5.
6.
7.
G.
Three separate alarm levels: Caution, Warning, and Alarm.
Separate strobes for Warning and Alarm conditions. Externally mount the two
strobes on top of enclosure.
Indication of sensor nearing end of its useful life based on the sensor output, not on the
time the sensor was in service.
Displays average, minimum, and maximum gas concentrations of the sensor over
selected time.
Malfunction Indication Alarm: Displays a separate unique character when an over range
or under range condition exists, a sensor signal sensor is lost, or a set-point error or
memory failure occurs.
Audible Alarm:
1.
2.
3.
4.
H.
Real-time clock.
Alarm levels.
Change span-gas values.
Display date of last calibration.
Display minimum, maximum, and average gas values.
Change address, future calibration time, and date.
Provides an audible horn when an alarm condition occurs.
Horn shall be rated for 95 dB with selectable output tones.
Mount horn inside or on exterior of enclosure.
Activate horn through a horn relay. Horn relay shall be form "A" contacts and set as
normally open and common.
Operator Interface:
1.
Door Audible Alarm Acknowledge Switch:
a.
b.
2.
Push-button switch located on front door shall silence audible alarm.
Switch shall reset latched alarms if normal gas conditions exist. Visual alarms shall
remain on as long as alarms are exceeded.
Operating Modes and Parameters Selection: Selections listed shall be accomplished by
the use of switches, jumpers, or remote control not involving the use of tools.
GAS INSTRUMENTS
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a.
b.
c.
I.
Display range value.
Latching or nonlatching mode for the alarm set points.
Upscale or downscale acting alarms.
Output Signal:
1.
Relays:
a.
b.
c.
d.
e.
Provide one relay for each set-point level for each of the three alarm levels.
Provide one relay for fault conditions.
Alarm and fault relays shall be form "C," SPDT. Contacts shall be rated for 5 A
resistive at 250-V ac or 30-V dc.
Contacts shall be capable of being selected normally open or normally closed.
Alarm relays shall be normally de-energized. The fault relay shall be normally
energized.
Retain "Analog Output" or "Digital Communication" Subparagraph below. "Analog Output"
Subparagraph is intended for minimal interface.
2.
Analog Output:
a.
b.
Two-wire, 4- to 20-mA, [isolated] [nonisolated] [isolated or nonisolated] current
source.
Signal capable of operating into a 600-ohm load.
Retain "Digital Communication" Subparagraph below for full interface through serial communication.
Coordinate with control system.
3.
Digital Communication:
a.
b.
c.
d.
J.
Bidirectional sending and receiving of digital signals.
Digital signals shall comply with FTT-10-based communication.
Protocol shall be LonTalk supported by Lon Works.
Signal speed shall be no greater than 78.1 kBs per second.
Sensor:
1.
2.
3.
4.
5.
Electrochemical fuel-cell type does not require periodic addition of reagents.
Sensor shall be replaceable without the need for tools.
Sensors shall have a minimum useful life of one year. Replace failed sensors at no charge
within first year.
Mount sensor externally on the side or bottom of enclosure. Where indicated on
Drawings, mount sensor remote from enclosure.
Remote Mounting:
a.
b.
c.
Provide sensor in a separate enclosure. Enclosure shall be NEMA 250, Type 4X,
except when sensor is installed in a hazardous location, then enclosure shall be an
explosion-proof type suitable for the application.
Provide sensor with cable for connecting to monitor.
Provide sensor with mounting hardware suitable for application.
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d.
K.
For duct-mounted applications, the sensor installation shall provide kit for
calibration of the sensor without removing sensor from duct.
Gas Sampling Pump:
1.
2.
3.
4.
Where required by application, provide a pump mounted inside the enclosure to provide a
motive force to induce flow of gas sample across the sensor.
Signal to the sensor from the pump shall be in digital communication format to eliminate
radio-frequency interference (RFI) and electromagnetic interference (EMI).
A flow sensor shall activate a relay when the gas sample falls below the acceptable flow
rate to the sensor and shall indicate a loss of gas flow on the display.
Introduction of a calibration gas to the gas sensor shall be through an integral push-button
valve. This push-button valve shall return to monitoring the sampled area when released.
Retain "Battery Backup" Paragraph below for battery backup. Below is an option and not generally
needed.
L.
Battery Backup:
1.
2.
3.
4.
5.
M.
Provide battery backup power supply to continue normal operation if normal power
source is interrupted.
Transfer to battery backup shall be automatic and shall be indicated on the display.
Mount battery backup power supply inside enclosure.
Battery backup shall be continuously charged during normal operation.
Battery life shall be at least 0.5 hours with strobes flashing, alarm conditions asserted,
and horn sounding.
Calibration:
1.
2.
3.
Calibrate and adjust functions through nonintrusive hand-held wireless remote control
without opening enclosure door.
Enter calibration mode through hand-held wireless remote control unit. The display of the
monitor shall instruct the user on when to apply zero and span gas. The system shall
automatically adjust its internal settings to the proper calibration values without further
intervention by the user. On completion of a successful calibration, the system shall exit
the calibration mode. Date stamp of last successful calibration is retained in the system
internal memory, with capability to be indicated on display. If calibration is unsuccessful
for any reason, the display shall show an unsuccessful calibration attempt and revert to its
previous calibration settings.
Wireless method shall employ a digitally encoded infrared light beam.
Retain one of first two subparagraphs below.
4.
Hand-held wireless remote control shall let the user perform sensor zeroing and
calibration.
5.
Hand-held wireless remote control shall let the user perform sensor zeroing and
calibration, as well as activate all functions and features of the monitor.
6.
The monitor infrared link shall not be affected by natural and man-made low-level
ambient light.
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Retain "Automatic Calibration System" Paragraph below for automatic calibration. Automatic calibration
is an option. Coordinate with "Calibration" Paragraph above.
N.
Automatic Calibration System:
1.
2.
3.
4.
5.
6.
7.
8.
9.
2.4
Provide automatic calibration of all oxygen monitors installed. Number of automatic
calibration systems shall be determined by supplier based on location and quantity of
oxygen monitors.
Automatic calibration system shall, without manual intervention, periodically perform a
complete calibration of the sensor.
System shall exchange digital signals with sensor.
Automatic calibration shall be adjustable from as many as three times per day to only
once every 30 days.
Sensor alarms shall be suppressed or disabled until the automatic calibration cycle is
completed.
Manual calibration of the sensor shall be initiated at any time with a hand-held infrared
remote control without the need to disable or turn off the automatic calibration system.
House the system in a separate NEMA 250, Type 4X enclosure from the oxygen
monitoring system. Enclosure shall have provisions for wall mounting.
Digital displays shall indicate zero and when span gas is being applied to the sensor, the
status, and any fault condition.
Provide with a separate valve condulet to monitor the condition of the calibration
cylinders attached to the calibration system. Insufficient gas pressure to calibrate the
sensor shall light the fault indicator.
MULTIPOINT CARBON-MONOXIDE MONITORING SYSTEM
BAPI does not manufacture this style of sensor.
This article can also be used as a guide for other gases. Refer to manufacturer product literature.
A.
Manufacturers: Subject to compliance with requirements, provide products by one of the
following:
1.
2.
MSA Instrument Division.
<Insert manufacturer's name>.
Requirements in remaining paragraphs below are based on MSA's "MultiGard."
B.
Description:
1.
2.
3.
4.
5.
Each sampling point shall monitor any variation in the carbon-monoxide concentration
level.
Each sampling point shall be individually piped to the monitoring system.
Provide [each ]sampling point with a 0.3-micron filter.
Each sampling point shall be an alarm point.
A dual-head diaphragm pump shall draw an air sample through piping system and
through a microprocessor-controlled sequencer feeding an analyzer with a new sample
every [15] <Insert number> seconds.
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6.
7.
8.
9.
10.
11.
C.
Analyzer:
1.
2.
3.
4.
5.
6.
7.
8.
D.
2.
3.
4.
5.
6.
7.
Each sample shall send a 4-20 mA output signal proportional to the highest
concentration.
Alphanumeric visual display of current analyzer concentration reading shall be in ppm or
another industry-accepted measurement.
Visual indication for sample analyzing, sample high-concentration alarm, analyzer
malfunction, and calibration.
Any number and configuration of sample points shall be capable of being bypassed.
Each sample point shall be capable of being manually sampled through an override
feature.
System parameters shall be stored in nonvolatile memory.
Provide at least an eight-hour battery backup of current alarm status. Battery shall be
rechargeable.
Enclosure:
1.
2.
3.
F.
Analyzer shall operate using principle of nondispersive infrared absorption.
Sampling response time shall be within 10 seconds.
Zero drift and span drift shall be less than 1 percent of full scale within a 24-hour period.
Repeatability shall be within 1 percent of full scale.
Accuracy shall be within 1 percent of full scale.
Calibration range shall be zero to 500 ppm.
Digital display on analyzer face with scale shall be in ppm.
Temperature shall be compensated from 30 to 120 deg F ((minus 1 to 49 deg C)) ambient
temperature.
Control and Display:
1.
E.
Sample time shall be adjustable in 1 second increments from zero to 60 minutes.
Span and zero calibration gas shall be automatically initiated by the microprocessor.
System shall also provide manual initiation of span and zero calibration gas.
Analyzer output shall be corrected by the microprocessor.
Monitoring system shall have [8] [16] [24] [32] sample points.
System shall operate on 120-V ac, single-phase, 60-Hz power.
Final adjustment; calibration, testing, and startup of the system shall be performed by a
trained representative of manufacturer.
NEMA 250, [Type 1] [or] [Type 12].
Hinged and locking door, full size of face.
House all system components. Multiple adjoining enclosures are acceptable if joined to a
common support structure.
Calibration Equipment:
1.
Provide equipment necessary to automatically and manually calibrate the system,
including, but not be limited to, the following:
a.
b.
Regular assembly.
Zero cap.
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c.
d.
e.
f.
2.5
Calibration cap.
Two cylinders filled with calibration gas.
Instruction book.
Carrying case.
VOC SENSORS AND TRANSMITTERS
Requirements in remaining paragraphs below are based on Building Automation's "VOC series."
Ensure effective building ventilation and control cost with a demand-controlled ventilation VOC sensor
with unique MEMS technology to help achieve true indoor air quality rather than CO2 dilution.
The BAPI sensor measures VOCs and indicates when a space is occupied just as well as a CO2 sensor.
Measures air contaminants from other sources besides respiration, such as building materials, cleaners,
perfumes and furniture and carpet off-gassing.
The optional display alternates between the measured values and is field adjustable between degree F or
degree C. Optional three color LED indicates “VOC Level” of Good, Fair or Poor.
Unit can be combined with temperature and humidity measurement, temperature set point and occupant
override – only one sensor needed instead of three.
Using this sensor to ventilate is a way of achieving true indoor air quality and not just CO2 dilution.
Output is correlated to a CO2 value allowing you to ventilate using ASHRAE’s occupancy-based VRP
algorithm.
http://www.bapihvac.com/products/end-user/voc-room-voc-transmitter-in-bapi-stat-3-enclosure/
A.
Wall Sensor [Type 1] <Insert drawing designation>, with Optional Display:
1.
Basis-of-Design Product: Subject to compliance with requirements, provide Building
Automation Products, Inc.; BAPI model BS3 VOC or comparable product by one of the
following:
a.
2.
3.
4.
5.
<Insert manufacturer's name>.
Metal Oxide Semiconductor catalytic technology optimized for areas that are periodically
unoccupied using automatic background calibration over an extended period to reduce
drift.
Measurement range of 0-2000 ppm CO2 equivalent linear to selectable 0-5 V dc or 010 V dc output range.
ABS plastic case.
Provide the following options where called for or required to meet the specified
sequences of operation:
a.
Digital display: 0.76 inch (19.3 mm), for VOC and optional humidity and
temperature sensors.
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b.
c.
d.
e.
f.
Three color LED or display arrows for ready indication of acceptable, moderate or
high VOC level concentrations.
Integral 2 percent accuracy relative humidity sensor with selectable 0-5 V dc, 010 V dc or 2-10 V dc output range linear to relative humidity level.
Integral space temperature sensor
Integral space temperature setpoint adjustment
Local pushbutton for override of occupancy schedules
Ensure effective building ventilation and control cost with a demand-controlled ventilation VOC sensor
with unique MEMS technology to help achieve true indoor air quality rather than CO2 dilution.
The BAPI sensor measures VOCs and indicates when a space is occupied just as well as a CO2 sensor.
Measures air contaminants from other sources besides respiration, such as building materials, cleaners,
perfumes and furniture and carpet off-gassing.
Optional three color LED display on front of unit to indicate the VOC level.
Using this sensor to ventilate is a way of achieving true indoor air quality and not just CO2 dilution.
Output is correlated to a CO2 value allowing you to ventilate using ASHRAE’s occupancy-based VRP
algorithm.
http://www.bapihvac.com/products/end-user/voc-room-voc-transmitter-in-bapi-stat-4-enclosure/
B.
Wall Sensor [Type 2] <Insert drawing designation>, without Display:
1.
Basis-of-Design Product: Subject to compliance with requirements, provide Building
Automation Products, Inc.; BAPI model BS4 VOC or comparable product by one of the
following:
a.
2.
3.
4.
5.
<Insert manufacturer's name>.
Metal Oxide Semiconductor catalytic technology optimized for areas that are periodically
unoccupied using automatic background calibration over an extended period to reduce
drift.
Measurement range of 0-2000 ppm CO2 Equivalent linear to selectable 0-5 V dc or 010 V dc output range.
ABS plastic case.
Provide the following options where called for or required to meet the specified
sequences of operation:
a.
Three color LED for ready indication of acceptable, moderate or high CO2 level
concentrations.
Ensure effective building ventilation and control cost with a demand-controlled ventilation VOC sensor
with unique MEMS technology to help achieve true indoor air quality rather than CO2 dilution.
The BAPI sensor measures VOCs and indicates when a space is occupied just as well as a CO2 sensor
Measures air contaminants from other sources besides respiration, such as building materials, cleaners,
perfumes and furniture and carpet off-gassing
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BAPI’s VOC Duct Sensor samples duct air using an aspiration tube. Moving air from the duct enters the
tube, is forced into the BAPI-Box enclosure and exits through the other half of the tube. As long as there
is air movement in the duct, air is continuously exchanged
This sensor converts the VOC reading to a CO2 equivalent level. This lets you use ASHRAE’s CO2based VRP schedule to ventilate
http://www.bapihvac.com/products/end-user/voc-duct-voc-transmitter/
C.
Duct Sensor [Type 3] <Insert drawing designation>:
1.
Basis-of-Design Product: Subject to compliance with requirements, provide Building
Automation Products, Inc.; BAPI model BB VOC or comparable product by one of the
following:
a.
2.
3.
4.
5.
<Insert manufacturer's name>.
Metal Oxide Semiconductor catalytic technology optimized for areas that are periodically
unoccupied using automatic background calibration over an extended period to reduce
drift.
Measurement range of 0-2000 ppm CO2 Equivalent linear to selectable 0-5 V dc or 010 V dc output range.
Polycarbonate plastic case.
Provide the following options where called for or required to meet the specified
sequences of operation:
a.
Three color LED for ready indication of acceptable, moderate or high CO2 level
concentrations.
D.
Output Signal: Zero to [5] [or] [10]-V dc with minimum load resistance of 4000 ohms.
E.
Performance:
1.
2.
3.
4.
Measurement Range: Zero to 2,000 ppm CO2 equivalent..
Ambient Temperature: 32 to 122 deg F (zero to 50deg C).
Ambient Relative Humidity: 5 to 95 percent non-condensing.
Power:
a.
b.
5.
6.
F.
5 V dc output: 9 to 35 V dc.
10 V dc output: 15 to 35 V dc.
Startup Time: 15 minutes.
Response Time: Less than 60 Sec (after startup time).
Enclosure:
1.
2.
Duct: Lexan.
Wall: ABS.
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2.6
CARBON MONOXIDE SENSORS AND TRANSMITTERS
BAPI's Carbon Monoxide Sensor offers enhanced, long life electrochemical sensing with outstanding
accuracy at low concentrations.
The sensor has field selectable CO ranges of 0 to 100, 0 to 200, 0 to 300, and 0 to 500 ppm. It also has
field selectable outputs of 0 to 5, 1 to 5, 0 to 10, and 2 to 10 VDC as well as a 3-wire 4 to 20 mA output.
The LCD shows the CO reading in ppm and is backlight for 10 seconds after any button push.
Two independent SPDT alarm contacts switch at field selectable CO concentrations of 25, 35, 50, 100,
and 200 ppm. A status LED is green when the measured CO is below the lowest relay setpoint. The LED
turns red whenever an alarm relay is on.
Multiple units may have their relay outputs interconnected to cover large areas. Also known as a "wired
OR" configuration.
An alarm timer holds the output relays on for a fixed time after the CO level has fallen below 80 percent
of setpoint. This allows additional fan run time to be sure that the CO has been purged. Field selectable
times of zero, one, five, and ten minutes are provided.
The sensor element is tested daily for proper operation. When the sensor element reaches its end of life,
both relays turn on, the output is set to maximum, and the status LED is yellow. Sensor elements last
approximately 7 years and the sensor module is field replaceable. The transmitter continuously tests itself
for proper operation. If a wiring fault is detectable, the status LED blinks red, the LED backlight blinks,
and the fault type is displayed on the LCD screen.
A.
Wall Sensor, With Display
1.
Basis-of-Design Product: Subject to compliance with requirements, provide Building
Automation Products, Inc.; BAPI model BAPI Box CO or comparable product by one of
the following:
a.
2.
3.
4.
5.
6.
7.
<Insert manufacturer's name>.
Electro-chemical sensing element with 1 ppm resolution. Field replaceable with factory
calibrated sensor assembly. Self-tested daily for proper operation.
Field-Selectable Carbon Monoxide Measurement Range: Zero to [100 ppm] [or] [200
ppm] [or] [300 ppm] [or] [500 ppm] linear to field selectable analog output range.
Field-Selectable Analog Output Range: [4 to 20 mA] [or] [0 to 5 VDC] [or] [1 to 5
VDC] [or] [0 to 10 VDC] [or] [2 to 10 VDC] linear to field selectable carbon monoxide
measurement range.
Two independent alarm relays with dry SPDT (Form C) contacts that actuate at field
selectable setpoints. Multiple units may be wired in parallel (Wired OR) to cover larger
areas.
Field-Selectable, Alarm Relay Setpoints for Alarm Relay 1: [25 ppm] [or] [30 ppm] [or]
[100 ppm] [or] [200 ppm]. Relay activates when the carbon monoxide measurement
equals the setpoint value. Relay deactivates when the carbon monoxide value falls to 80
percent of setpoint.
Field-Selectable, Alarm Relay Setpoints for Alarm Relay 2: [25 ppm] [or] [30 ppm] [or]
[100 ppm] [or] [200 ppm]. Relay activates when the carbon monoxide measurement
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8.
9.
10.
11.
B.
equals the setpoint value. Relay deactivates when the carbon monoxide value falls to 80
percent of setpoint.
Field-Selectable, Alarm Relay Hold Timers for Alarm Relay 1: [0 minutes] [or] [1
minute] [or] [5 minutes] [or] [10 minutes]. Time that the alarm relay contacts are
activated after the carbon monoxide measurement has fallen to 80 percent of the alarm
setpoint.
Field-Selectable, Alarm Relay Hold Timers for Alarm Relay 2: [0 minutes] [or] [1
minute] [or] [5 minutes] [or] [10 minutes]. Time that the alarm relay contacts are
activated after the carbon monoxide measurement has fallen to 80 percent of the alarm
setpoint.
Two line, 16 Character alpha-numeric display indicates carbon monoxide measurement, 0
to 500 ppm, independent of output range, analog output value, alarm values when relays
are active, all parameter values when each parameter's button is touched, and error
messages.
Multi-colored LED displays green, for normal operation; yellow, for sensor self-test or
sensor end life; red, for alarm relays active; and flashing red, for output circuit error.
Output Signal:
Retain one of the two subparagraphs below.
1.
2.
C.
[Zero to 5] [or] [1 to 5] [or] [zero to 10] [or] [2 to 10] VDC with minimum load
resistance of 5000 Ohms.
4 to 20 mA with maximum loop of 850 Ohms.
Performance:
1.
Carbon Monoxide Measurement Accuracy:
a.
b.
2.
Alarm Relays:
a.
b.
3.
18 to 28 VAC, 7.2 VA Max.
18 tp 40 VDC, 180 mA Max.
Wiring Terminals: Pluggable Screw Terminals, 14 to 24 Gauge.
Environmental Operation Range:
a.
b.
6.
2 Amps at 24 VAC/DC Resistive.
140 VA inrush, 48 VA holding a 24 VAC, Pilot Duty.
Power:
a.
b.
4.
5.
Less than 200 ppm, plus or minus 3 percent FS, 32 to 122 deg F (zero to 50 deg
C).
201 to 500 ppm, plus or minus 5 percent 50 to 122 deg F (10 to 50 deg C).
14 to 122 deg F (-10 to 50 dg C).
5 to 95 percent RH, Noncondensing.
90 percent response time, less than 118 seconds.
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D.
Enclosure:
1.
2.
3.
4.
UV resistant, polycarbonate.
Dimensions: 4.11 inches by 5.00 inches by 2.50 inches (104 mm by 136.6 mm by 63.5
mm).
8-capacitive touch buttons.
Tamper resistant cover.
PART 3 - EXECUTION
3.1
EXAMINATION
A.
Examine substrates and conditions, with Installer present, for compliance with requirements for
installation tolerances and other conditions affecting performance of the Work.
B.
Examine roughing-in for instruments installed in piping to verify actual locations of connections
before installation.
C.
Examine roughing-in for instruments installed in duct systems to verify actual locations of
connections before installation.
D.
Prepare written report, endorsed by Installer, listing conditions detrimental to performance.
E.
Proceed with installation only after unsatisfactory conditions have been corrected.
3.2
INSTALLATION, GENERAL
A.
Furnish and install products required to satisfy more stringent of all requirements indicated.
B.
Install products level, plumb, parallel, and perpendicular with building construction.
C.
Properly support instruments, tubing, piping, wiring, and conduit to comply with requirements
indicated. Brace all products to prevent lateral movement and sway or a break in attachment
when subjected to seismic loads.
D.
Fastening Hardware:
1.
2.
3.
Stillson wrenches, pliers, and other tools that cause injury to or mar surfaces of rods,
nuts, and other parts are prohibited for work of assembling and tightening nuts.
Tighten bolts and nuts firmly and uniformly. Do not overstress threads by using excessive
force or oversized wrenches.
Lubricate threads of bolts, nuts, and screws with graphite and oil before assembly.
E.
Install products in locations that are accessible and that permit calibration and maintenance
from floor, equipment platforms, or catwalks. Where ladders are required for Owner's access,
confirm unrestricted ladder placement is possible under occupied condition.
F.
Corrosive Environments:
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1.
2.
Use products that are suitable for environment to which they are subjected.
If possible, avoid or limit use of materials in corrosive environments, including but not
limited to, the following:
a.
b.
c.
3.
4.
Laboratory exhaust airstreams.
Process exhaust airstreams.
<Insert requirements>.
When conduit is in contact with a corrosive environment, use Type 316 stainless-steel
conduit and fittings or conduit and fittings that are coated with a corrosive-resistant
coating that is suitable for environment.
Where instruments are located in a corrosive environment and are not corrosive resistant
from manufacturer, field install products in a NEMA 250, Type 4X enclosure constructed
of Type 316L stainless steel.
The wall temperature, the temperature of the air within the wall cavity, the temperature in the plenum or
the quality of the air in those spaces can cause erroneous readings. The mixing of room air and air from
within the wall cavity or conduit can lead to condensation, erroneous readings and sensor failure. To
prevent these conditions, BAPI recommends sealing the conduit leading to the junction box, filling the
junction box with fiberglass insulation, or sealing the wall cavity. Do not use caulk, caulks outgas VOC's
and use humidity to cure causing erroneous readings. Retain or delete the paragraph below as desired.
G.
3.3
Plug conduit openings or fill junction boxes with fiberglass insulation.
ELECTRICAL POWER
A.
Furnish and install electrical power to products requiring electrical connections.
B.
Furnish and install circuit breakers. Comply with requirements in Section 262816 "Enclosed
Switches and Circuit Breakers."
C.
Furnish and install power wiring. Comply with requirements in Section 260519 "Low-Voltage
Electrical Power Conductors and Cables."
D.
Furnish and install raceways. Comply with requirements in Section 260533 "Raceways and
Boxes for Electrical Systems."
3.4
INSTRUMENTS, GENERAL INSTALLATION REQUIREMENTS
A.
Mounting Location:
1.
2.
Install transmitters for gas associated with individual air-handling units and associated
connected ductwork and piping near air-handlings units co-located in air-handling unit
system control panel, to provide service personnel a single and convenient location for
inspection and service.
Install gas switches and transmitters for indoor applications in mechanical equipment
rooms. Do not locate in user-occupied space unless indicated specifically on Drawings.
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3.
4.
B.
Mount switches and transmitters not required to be mounted within system control panels
on walls, floor-supported freestanding pipe stands, or floor-supported structural support
frames. Use manufacturer's mounting brackets to accommodate field mounting. Securely
support and brace products to prevent vibration and movement.
Install instruments in dry gas and non-condensable vapor piped services above their
process connection point. Slope process connection lines up to instrument with a
minimum slope of [2] [3] <Insert number> percent.
Mounting Height:
1.
2.
Mount instruments in user-occupied space to match mounting height of light switches
unless otherwise indicated on Drawings. Mounting height shall comply with codes and
accessibility requirements.
Mount switches and transmitters located in mechanical equipment rooms and other
similar space not subject to code, state, and federal accessibility requirements within a
range of 42 to 72 inches ((1.1 to 1.6 m))above the adjacent floor, grade, or service
catwalk or platform.
a.
C.
3.5
Make every effort to mount at 60 inches ((1.5 m)).
Seal penetrations to ductwork, plenums, and air-moving equipment to comply with duct staticpressure class and leakage and seal classes indicated, using neoprene gaskets or grommets.
CARBON-MONOXIDE MONITORING SYSTEM
Indicate area to be monitored on Drawings.
3.6
A.
Install sample points in monitored area to provide accurate measurement of gas concentration.
B.
Install exposed sampling points with a finished appearance consistent with other materials in
space. Submit proposed products to be installed for review and approval.
C.
Individually install each sample point to the carbon-monoxide monitoring system.
D.
Install tubing in a minimum size of NPS 3/8 (DN 10).
E.
Use compression fittings at connections to equipment.
F.
If not indicated on Drawings, locate carbon-monoxide monitoring system in a secured and
serviceable location accessible to authorized personnel.
G.
Support carbon-monoxide monitoring system from floor or wall. Support floor-mounted
systems using a structural channel frame. Provide mounting brackets.
OXYGEN MONITORING SYSTEM
Indicate area to be monitored on Drawings.
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A.
Install monitor in space to provide an accurate measurement of gas concentration.
B.
Support oxygen monitoring system from wall.
3.7
IDENTIFICATION
A.
Identify system components, wiring, cabling, and terminals. Each piece of wire, cable, and
tubing shall have the same designation at each end for operators to determine continuity at
points of connection. Comply with requirements for identification specified in Section 260553
"Identification for Electrical Systems."
B.
Install engraved phenolic nameplate with instrument identification on face.
3.8
CHECKOUT PROCEDURES
A.
Check out installed products before continuity tests, leak tests, and calibration.
B.
Check instruments for proper location and accessibility.
C.
Check instruments for proper installation on direction of flow, elevation, orientation, insertion
depth, or other applicable considerations that impact performance.
D.
Check instrument tubing for proper isolation, fittings, slope, dirt legs, drains, material, and
support.
3.9
ADJUSTMENT, CALIBRATION, AND TESTING
A.
Description:
1.
2.
3.
4.
5.
6.
7.
8.
Calibrate each instrument installed that is not factory calibrated and provided with
calibration documentation.
Provide a written description of proposed field procedures and equipment for calibrating
each type of instrument. Submit procedures before calibration and adjustment.
For each analog instrument, perform a three-point calibration test for both linearity and
accuracy.
Equipment and procedures used for calibration shall comply with instrument
manufacturer's written recommendations.
Provide diagnostic and test equipment for calibration and adjustment.
Field instruments and equipment used to test and calibrate installed instruments shall
have an accuracy of at least twice the instrument accuracy being calibrated. For example,
an installed instrument with an accuracy of 1 percent shall be checked by an instrument
with an accuracy of 0.5 percent.
Calibrate each instrument according to instrument instruction manual supplied by
manufacturer.
If, after calibration, indicated performance cannot be achieved, replace out-of-tolerance
instruments.
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9.
B.
Analog Signals:
1.
2.
3.
C.
Comply with field-testing requirements and procedures in ASHRAE Guideline 11, "Field
Testing of HVAC Control Components," in the absence of specific requirements, and to
supplement requirements indicated.
Check analog voltage signals using a precision voltage meter at zero, 50, and 100
percent.
Check analog current signals using a precision current meter at zero, 50, and 100 percent.
Check resistance signals for temperature sensors at zero, 50, and 100 percent of operating
span using a precision-resistant source.
Digital Signals:
1.
2.
Check digital signals using a jumper wire.
Check digital signals using an ohmmeter to test for contact.
D.
Meters: Check sensors at zero, 50, and 100 percent of Project design values.
E.
Sensors: Check sensors at zero, 50, and 100 percent of Project design values.
F.
Switches: Calibrate switches to make or break contact at set points indicated.
G.
Transmitters:
1.
2.
3.10
Check and calibrate transmitters at zero, 50, and 100 percent of Project design values.
Calibrate resistance temperature transmitters at zero, 50, and 100 percent of span using a
precision-resistance source.
MAINTENANCE SERVICE
Verify, with Owner, that maintenance service is required for Project.
A.
3.11
Maintenance Service: Beginning at Substantial Completion, maintenance service shall include
[three] [six] [nine] [12] months' full maintenance by [skilled employees of gas system and
equipment Installer] [manufacturer's authorized service representative]. Include
[monthly] [quarterly] [semiannual] [annual] preventive maintenance, repair or replacement
of worn or defective components, cleaning, and adjusting as required for proper operation. Parts
and supplies shall be manufacturer's authorized replacement parts and supplies.
DEMONSTRATION
A.
[Engage a factory-authorized service representative to train] [Train] Owner's maintenance
personnel to adjust, operate, and maintain instrumentation and control devices.
B.
Coordinate gas instrument demonstration video with operation and maintenance manuals and
classroom instruction for use by Owner in operating, maintaining, and troubleshooting.
GAS INSTRUMENTS
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PRODUCT MASTERSPEC LICENSED BY ARCOM TO BAPI; BUILDING AUTOMATION
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C.
Record videos on DVD disks.
D.
Owner shall have right to make additional copies of video for internal use without paying
royalties.
END OF SECTION 230923.16
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