Haloguard III Refrigerant Leak Detection Monitoring System

Cost-effective Photoacoustic Infrared Monitoring for Wide Area Applications.

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Haloguard III Photoacoustic Infrared, Multichannel, Multi-gas Detection and Notification Refrigerant Leak Detection and Monitoring Systems
The HALOGUARD ® III combines advanced microprocessor based digital signal processing and a wideband photoacoustic infrared cell to provide the newest most advanced system for continuous monitoring of all refrigerant gases.
The HALOGUARD ® III monitors single or multiple, local and remote locations and provides notification when gas concentration reaches preset alarm levels. Up to 24 different gases may be monitored simultaneously by adding optional channel scanners and remote IR modules.
Alarm relays and analogue outputs are designed to activate remote devices or to interface with an energy management (EMS)or building automation (BAS)system.
  • Simple installation
  • Easy field calibration
  • Up to 500 ft. sample draw
  • Three user alarms adjustable between 50 ppm &100% of scale
  • LCD shows PPM Concentration, Alarm, Test, Reset and Fault Diagnostics
  • Three flashing alarm LEDs
  • Fault, Ready &Power ON/OFF LEDs
  • Analogue output for BAS/EMS interface or data logging
  • Four alarm relays for ventilation, damper or remote notification
  • Alarm Test &Reset / Silence push buttons
  • High-intensity audible alarm
  • Rugged enclosure
Photoacoustic Infrared
Electrical Supply 115-230v, 50-60 Hz, 65W
Fuse 3A/240V, fast acting
Output Signal
Std: 4x5A, dry contact relay SPDT 
Opt: 7x5A, dry contact relay SPDT 
Opt: 0-5VDC, 4-20mA analogue
Sensitivity 20 ppm
Resolution 1 ppm
Measuring Range 0-1000 ppm all refrigerants
Response Time <1 minute per channel
Clearing Time <3 minutes per channel
Maximum Sample Point Tubing Length 150' with standard performance
500' optional where slower response is acceptable 
Operating Conditions 30°F to +120°F non-condensing
Std: NEMA 250, 20 lbs.
Opt: NEMA 4/12, 25 lbs.
Sample Rate 1.0 lpm

Listed to UL 3111-1 and CAN/CSA-C22.2 No. 1010.1-92

  • Refrigeration Equipment
  • Machinery Rooms
  • Cold Storage Areas
  • Process Cooling