Haloguard Low Cost 24-hour Leak Notification for Refrigeration Systems Refrigerant Leakhguard Detection and Monitoring Systems

HALOGUARD ® is the cost effective, reliable way to reduce costly refrigerant leakage. With a HALOGUARD ® leak monitor installed, you quickly know where the leak is located and how much refrigerant you are losing. This exclusive early warning system detects leaks in a designated area and flashes a bright red LED when parts-per million (PPM) reaches the alarm level you preset. With a dialer or other remote signal hookup, maintenance personnel will know immediately when and where a leak occurs. Repairs can be made quickly, before you lose costly refrigerant or perishable products. An optional analog output is available to interface with EMS/BMS systems.


  • Simple installation, easy field calibration
  • Remote sensor with 6 ft. instrument cable and DIN plug, extendable to 300 ft.
  • Audible alarm
  • LCD shows PPM Concentration, Alarm, Test, Reset Sensor Fault and Low Battery
  • 2 user alarms adjustable between 10 -100% of scale
  • Off-scale alarm
  • Three flashing alarm LEDs
  • Sensor Fault LED
  • Power On/Off LED
  • Four alarm relays for ventilation, dialer or remote notification
  • Alarm Test and Reset push buttons
  • Rugged NEMA 4/12 plastic enclosure
  • Dependable, solid-state electronics

optionsOptions & Accessories

  • Strobe light alarm
  • Analog output for BAS/EMS interface or data logging
  • Gas test kit
  • Battery back-up
  • Automatic calibration


Technology CMOS
Electrical Supply 115-230v, 50-60 Hz
Output Signal Std: 4x3A, dry contact
Opt: 0-10VDC or 4-20mA analog
Accuracy 10% Full-scale
Response Time <1 minute
Recovery Time <3 minutes
Sensor Life +5 years
Measuring Range 0-1000 ppm CFC, HFC, HCFC (except R123),
0-300 ppm R123
Operating Temperature:
Sensor -20°F to +110°F non-condensing
Controller 0°F to +120°F non-condensing
Enclosure: NEMA 4/12 design
Sensor PVC and porous PP filter
Weight 6 lbs. (add 4 lbs. for optional battery back-up)

Warranty (click for details)

Haloguard is unconditionally guaranteed for one year from the date of shipment. Any device found defective in that period will be replaced free of charge.

Documents Available for Download (click for complete listing)

Thermal Gas Systems, Inc.

11285 Elkins Rd.
Bldg. H-1
Roswell GA 30076
Tel: 770 667-3865
Fax: 770 667-3857
Toll Free: 800 896-2996
Email: info@thermalgas.com

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Confused? Have questions?
Give us a call 800-896-2996 to discuss your specific application requirements.

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