Product Specification
Digital Alarm System
Mixed Function Alarms
Elements
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Monitors medical gas and vacuum service and
can include eight-signal modules for external
switch monitoring
Individual LCD display indicates pressure/
vacuum at all times (transducers sold
separately)
Local or remote pressure sensing
Alarm module calculates high and low alarm
settings automatically
Primary power design accepts 115 or 230 VAC
(50/60 Hz)
Description
Chemetron® mixed alarm panels are designed to meet the
requirements of NFPA and CSA standards. Alarms shall
be UL and CSA listed as an assembly and shall include all
necessary gauges, factory wiring, transformers and
circuitry requiring only 115 volt AC or 230 volt AC
primary power. Internal voltage shall be stepped down to
5 volt DC and 20 volt DC control circuit power. Wiring
to external switches shall also be at 5 volts. Voltage to
external pressure or vacuum transducers (sold separately)
will be 20 volt DC.
Master alarm panels shall be modular in design and have
one LED (Light Emitting Diode) to indicate each normalabnormal condition. Each gas monitored shall have an
LCD (Liquid Crystal Display) to continuously indicate
actual pressure.
The master alarms shall include one or more 8-signal
annunciator modules for wiring to remote switches.
External switches may be either normally open (NO) or
normally closed (NC) type, or, if more than one 8-signal
annunciator module is used, both types can be used. The
selection of NO or NC is selected at set-up and is set per
module. Factory setup shall be for normally closed
circuitry wiring, per NFPA 99.
Each signal shall be labeled for its function using selfadhesive labels provided with the unit. Adjacent to each
signal label will be a red LED indicator light to signify
condition of the external switch. Activation of any switch
will illuminate its LED and actuate the audio alarm.
The 8-signal annunciator module shall contain an
independent normal/abnormal LED (green for normal
and red for abnormal).
The Control Module will have a test switch and an alarm
silence switch. The test switch shall test all modules one at
a time. There will also be an LED on the Control Module
to indicate status of the micro-controller (green is normal,
red is for a malfunction).
The back box shall contain factory installed copper tube
extensions, 6" long with a 3/8" OD to accept installer
furnished lines from the medical gas system. Each inlet
tube shall have a 1/8" NPT connection to accept pressure/
vacuum transducers (sold separately).
The signal distribution and power supply board shall have
dual transformers and a selector switch to field select
either 115 VAC or 230 VAC primary service.
The alarm audio tone shall be continuous. Its sound
intensity shall be 90 dBa at 2 meters. The audio signal
shall be canceled only by the alarm silence button or fault
correction. For faults identified by the Line Pressure
Modules, the audio alarm condition shall reactivate every
30 minutes until the fault has been corrected. For faults
identified by the Annunciator Module, the audio alarm
shall reactivate every eight hours until the fault has been
corrected. Regardless of the audio alarm condition, the
LED shall indicate abnormal as long as a fault condition
exists. The alarm shall automatically reset with the
correction of the fault condition.
The panel will be equipped with dry contacts for each
remote signal. This will enable the alarm to interface with
another alarm or central computer system.
Digital Alarm System – Mixed Function Alarms
Dimensional Data - Inches (cm)
Face Plate Dimensions
3 Gas
14" (35.6) x 8-7/8" (22.6)
6 Gas
23" (58.4) x 8-7/8" (22.6)
Product Specification
Digital Alarm System – Mixed Function Alarms
Ordering Information
Alarm Panels with Dry Contacts for Remote Connection
Catalog Number
Quantity
Description
74-14-1015
2 Modules, 8 Remote Signals
74-14-1020
1 Module, 8 Remote Signals, 1 Future
74-14-1025
3 Modules, 8 Remote Signals, 2 Future
74-14-1030
4 Modules, 8 Remote Signals, 1 Future
74-14-1040
5 Modules, 8 Remote Signals
Transducers with Gas-Specific Fittings (sold separately)
Catalog Number
Quantity
Description
74-14-9051
Oxygen
74-14-9052
Vacuum
74-14-9053
Nitrous Oxide
74-14-9054
Air
74-14-9055
Carbon Dioxide
74-14-9056
Nitrogen
74-14-9057
WAGD
Product Specification
Digital Alarm System – Mixed Function Alarms
All specifications are nominal and subject to change
without notice.
Warranty:
See Allied Statement of Warranties for details.
Customer Service:
USA: (800) 444-3940
FAX: (800) 477-7701
Canada/Mexico: (800) 446-0552
FAX: (800) 246-6201
International: (314) 268-1683
1720 Sublette Avenue
St. Louis, MO 63110 USA
(314) 771-2400
www.alliedhpi.com
© 2003 Allied Healthcare Products, Inc. Printed in
Product Specification
Form 74-00-3006 June