Chillgard L
Series
Refrigerant
Monitors
®
EVERY LIFE HAS A PURPOSE…
Chillgard L Series
 The refrigerant
monitoring industry
leader
 Home of proven, reliable
Photoacoustic Infrared
Technology
Chillgard L Series
 Photoacoustic sensor is stable and
sensitive
 Improved PIR sensing
 Sample system minimizes moving
parts, no solenoid valves or
mechanical flow switch
 RS-485 & Digital Signal Processing
 New advances in
micro-machined technology
 Water and Corrosion resistant plastic
enclosure
Chillgard L Series
 Features a new optical bench
 Micro-machined optics
 Significant technological
advancement
 Used on all Chillgard LS and LE
Gas Monitors
 Improved reliability
 2-year warranty
 Backwards-compatible with
existing units
Chillgard L Series - Flexibility
 Flexibility to meet:
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Refrigerant Monitoring needs
Remote Signaling and Control
Power Requirements
Budget
Chillgard L Series
 Chillgard LS Refrigerant Monitor
 Economical low level monitoring
of refrigerant gases
 Sensor unit with analog and digital output
 Chillgard LC Control Module
 Controls up to 8 Chillgard LS Sensors
 Multiple outputs and relays
 Chillgard LE Refrigerant Monitor
 Combined features of Chillgard LS and LC
Gas Monitors within one enclosure
 Combined multi-point sensing and
controlling
Chillgard LS Monitor
 Photoacoustic IR sensor
 Standard gases – R123,
R134a, R11, R12, R22
 Minimum detection level 20ppm
 Single-point diffusion or 4point pumped models
Chillgard LS
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Compliant with ANSI/ASHRAE 15
UL approval
Water- and corrosion-resistant plastic enclosure
Easy operation, installation and maintenance
2-year warranty
Chillgard LS
 24 VAC/DC or 110/220 VAC power
 5 LEDs indicate power, fault and 3 levels of
alarm
 4-20 mA and RS-485 outputs (to Chillgard LC
Controller)
Chillgard L Series – Sensor Board
Chillgard LS Optional Gases
 R400 and R500 series of refrigerants
 Blends of multiple refrigerants to obtain good
thermodynamic properties in the chiller, with
reduced corrosion and ozone depletion
potential.
 Includes R404a, R410a, R407c, R507
 Order with custom calibration
 Other refrigerants possible
Chillgard LS Accessories
 Accessories
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Unit-mounted strobe
Calibration box
Remote light towers
Calibration kits
Chillgard LC Controller
Maintenance and Repair
• No moving parts in diffusion-mode
Chillgard LS Monitor
• Optical bench is field-replaceable for convenient
repair and for detection of a different refrigerant
Chillgard LS Optical Bench
pumped bench
diffusion bench
Chillgard LS Summary
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Low cost refrigerant sensor
Improved PIR technology
Easy to install, operate and maintain
Can be stand-alone or used with
Chillgard LC Controller
Chillgard LC Control Module
 Capable of controlling up to 8 Chillgard LS
Sensors
 Easy-to-use digital display with 4-button keypad
 Provides gas reading, alarm status, calibration and
fault diagnostics
 Water- and corrosion-resistant enclosure
Chillgard LC Features
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4-20mA and RS-232 output
0-10 V point identifier output
4 relays - 3 levels of alarm + fault
85 dB horn, 100 dB horn option
Chillgard LC Control Board
Chillgard LS & LC
• Twisted pair RS-485, 18 GA wire up to 1000 ft
• Modbus protocol
• LC can communicate with up to 8 single-point
LS monitors, two 4-point LS monitors, or any
combination
Chillgard LC Wiring
 Home-run communication wiring
 Bus communication wiring
Powering the Chillgard LS
 Power locally via 24 VAC or DC
 Power locally via 110/220 VAC optional supply
 Power via Chillgard LC Control Module
Powering the Chillgard LC
 24 VAC or DC
 110/220 VAC optional supply
 Can be used to power one Chillgard LS
Monitor
Powering the Chillgard LC
 Transformer version
 Powers Chillgard LC Monitor
and up to 5 Chillgard LS
Sensors
Powering Chillgard L Series
24 VAC/DC available
24 VAC/DC
24 VAC/DC
RS 485
Chillgard L Series Power Options
110/220 VAC Available
110/220 V
input
110/220 V
input
RS 485
With internal 110/220 VAC
power supply
With internal 110/220
VAC power supply
Chillgard L Series Power Options
110/220 VAC Available
110/220 V
input
4-conductor cable
24 VDC from LC
With internal 110/220 VAC
power supply
For 1 sensor module, up to 100’ using 18 AWG wire
Chillgard L Series Power Options
110/220 VAC AVAILABLE
LC transformer version
110/220 V
Input
w/internal transformer
Transformer version powers up to 5 diffusion Chillgard LS Monitors
or two 4-point pumped Chillgard LS Monitors
Chillgard LC
 Accessories
 Unit mounted strobe
 Remote light towers
 Calibration kits
Chillgard LC Summary
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Low cost controller
Controls up to 8 Chillgard LS sensors
Multiple outputs
Configurable to meet your needs
Easy to install, operate and maintain
Chillgard LE Features
 Combined features of Chillgard LS and LC
products in one enclosure
 Combined multi-point sensing and controlling
Chillgard LE Features
 Photoacoustic IR sensor
 Standard gases – R123, R134a,
R11, R12, R22
 Minimum detection level 20ppm
 Single-point diffusion, singlepoint pumped or 4-point pumped
models
Chillgard LE Features
 Complies with
ANSI/ASHRAE 15
 UL approval
 Water- and corrosionresistant plastic enclosure
 Easy to operate, install and
maintain
 2-year warranty
Chillgard LE Features
 24 VAC/DC or 110/220 VAC power
 Easy-to-use digital display with 4-button keypad
 Provides gas reading, alarm status,
calibration and fault diagnostics
 Water- and corrosion-resistant enclosure
Chillgard LE Features
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4-20mA and RS-232 output
0-10 V point identifier output
4 relays - 3 levels of alarm + fault
85 dB horn, 100 dB horn option
Chillgard LE Gases
 R400 and R500 series of refrigerants
 Blends of multiple refrigerants to obtain
good thermodynamic properties in the
chiller, with reduced corrosion and
ozone depletion potential.
 Includes R404a, R410a, R407c, R507
 Order with custom calibration
 Other refrigerants possible
Chillgard LE Summary
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Low cost refrigerant sensor
Improved PIR technology
Multiple outputs
Configurable to meet your needs
Easy to install, operate and
maintain
Chillgard L Series Summary
 Effective: Meets ASHRAE standards for
refrigerant monitoring
 Flexible: Configurable to meet application needs
 Advanced: Photoacoustic infrared bench design
 Efficient: Detects low levels of refrigerant gas
with low cost of ownership
Chillgard L Series
Thank you!