Refrigerant Leak Monitor

  • Proprietary infrared (NDIR) sensing technology
  • Detect and measure all CFC, HFC, HCFC, ammonia and carbon dioxide leaks
  • Low detection capability (as low as 1 ppm)
  • Long sampling distance (up to 500 ft/152 m)
  • Simple out-of-the-box installation


Bacharach’s Single-Zone gas leak monitors offer superior performance, flexibility and functionality for low level continuous monitoring of refrigerants, carbon dioxide or ammonia. The 10 inch (250 mm) infrared sensor together with the built-in library of 50 gases enables the Single-Zone to accurately detect and measure levels as low as 1 ppm. The backlit graphic LCD display and status LEDs provide an at-a-glance system overview. Auto-calibration feature minimizes maintenance needs.

The Single-Zone is a robust leak detector offering effective refrigerant management. The earlier a small leak is detected, the sooner countermeasures can be initiated to mitigate costly refrigerant loss. On-board relays enable activation of alarms or ventilation systems when a programmable detection threshold is exceeded. Using the analog output, the Single-Zone can be integrated into any BMS/BAS system.


Type Single point sampling system using proprietary IR sensor
Gases Refrigerants:                 CFCs, HFCs, HCFCs, HFOs
Natural Refrigerants:      Ammonia, Carbon Dioxide
Measuring Range Refrigerants 0 to 10,000 ppm
Ammonia 25 to 10,000 ppm
Carbon Dioxide 300 to 8,000 ppm
Sensitivity Refrigerants 1 ppm
Ammonia 25 ppm
Carbon Dioxide 10 ppm
Sampling Distance 0 to 500 ft (0 to 150 m)
Display Backlit graphic LCD, three status LEDs
Output 4 to 20 mA
Power Supply 100 to 240 VAC, 50 / 60 Hz
Relays 3 alarm relays, 1 fault relay, SPDT
Rating 3 A @ 250 VAC, resistive load
Ambient Conditions Temperature                32 to +122 °F (0 to +50 °C)
Humidity                     5 to 90 %RH, non condensing
Altitude                       0 to 6,560 ft (2,000 m)
Enclosure Powder-coated aluminum housing
Size (w x h x d) Approx. 13.7” x 7.7” x 3.6” (350 x 195 x 95 mm)
Weight Approx. 7 lbs. (3.2 kg)  
Approvals CE, UL, CSA, EN 61010-1, EN 14624


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