OEM SENSORS

smartMODUL Sensors for Refrigerant Applications

Infrared Gas Sensors For Monitoring Room Air In Cold Storage Houses And Leak Gas Detection In Cooling Systems. 

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The continuous monitoring of the cooling process is vital in the food industry whereby refrigerating plants and cold warehouses always have to function reliably, so the availability of the plants remain in top condition. This is also the case during the manufacturing of food stuff as well as during the transportation and storage of perishable goods.

Air-Met Scientific have a range of reliable NDIR refrigerant gas sensors specifically for use in refrigerant detectors to ensure that you detect any gas leaks early on and avoid expensive losses. 

The sensors have the ability to measure the following gases:

Gases Measurement Range Model Type
R22 chlorodifluoromethane 0-1000 ppm
0-2000 ppm
  B1-700105-03000
B1-700205-03000
R123 dichlorotrifluoroethane 0-1000 ppm
0-2000 ppm
  B1-730105-03000
B1-730205-03000
R125 pentafluoroethane 0-1000 ppm 
0-2000 ppm
  B1-720105-03000
B1-720205-03000
R134a tetrafluoroethane 0-1000 ppm 
0-2000 ppm
  B1-710105-03000
B1-710205-03000
R290 propane 0-1.7 Vol.-% (0-100% LEL) B1-050176-03000
R404a refrigerant 0-1000 ppm 
0-2000 ppm 
  B1-740105-03000
B1-740205-03000
R407a refrigerant 0-1000 ppm 
0-2000 ppm 
  B1-750105-03000
B1-750205-03000
R407c refrigerant 0-1000 ppm 
0-2000 ppm 
  B1-800105-03000
B1-800205-03000
R410a refrigerant 0-1000 ppm 
0-2000 ppm 
  B1-760105-03000
B1-760205-03000
R507 refrigerant 0-1000 ppm 
0-2000 ppm 
  B1-770105-03000
B1-770205-03000
R600 n-butane 0-1.4 Vol.-% (0-100% LEL) B1-020146-03000
R744 carbon dioxide 0-50 Vol.-%   B1-212506-03000
R1234yf refrigerant 0-1000 ppm 
0-2000 ppm 
  B1-780105-03000
B1-780205-03000

For more information about integrated systems, contact Air-Met Scientific today. 

  • Infrared measuring principle (NDIR)
  • Dual beam technology
  • Modbus ASCII via UART
  • Pre calibrated
  • Gas entry by diffusion
  • High selectivity

For full product specifications, please refer to the product brochure.

General Features R22, R123, R125, R134a, R404a, R407a, R407a, R407c, r507, R744, R1234yf R290, R410a, R600
Measurement principle: Non Dispersive Infra-Red (NDIR), dual wavelength
Measurement range:  Dependant on model. See brochure
Gas supply:  by diffusion (atmospheric pressure)
Dimensions:  62 mm x 37 mm x 30 mm (L x W x H)
Warm Up Time:
< 2 minutes (start up time)
< 30 minutes (full specification)
Measuring Response1 R22, R123, R125, R134a, R404a, R407a, R407a, R407c, r507, R744, R1234yf R290, R410a, R600
Response time (t90): Approx 30 seconds
Digital resolution (@ zero):  1 ppm / 0.1 % LEL / 0.01 Vol.-%2
Detection Limit:  ≤ 1 % Full Scale (typically) ≤ 2 % Full Scale (typically)
Repeatability ≤ ± 1 % Full Scale ≤ ± 2 % Full Scale
Linearity Error3 ≤ ± 2 % Full Scale ≤ ± 4 % Full Scale
Long term stability (zero)4 ≤ ± 2 % Full Scale over 12 month period ≤ ± 4 % Full Scale over 12 month period
Long term stability (span)4 ≤ ± 2 % Full Scale over 12 month period ≤ ± 4 % Full Scale over 12 month period

1Relating to atmospheric pressure 1013 hPa absolute and 25 °C ambient temperature (type Diffusion) or sample gas pressure 1013 hPa absolute, 0.5 l/min gas flow and 25°C ambient and gas temperature (type Flow)

2Dependent on the gas and the measurement range. 

3Stated linearity error excludes calibration gas tolerance of ± 2 %, ( ± 5 % with blends)

4For dry and clean test gas at 25°C and 1013hPa absolute - depending on the operating and ambient conditions values may differ

≤ ± 4 % Full Scale over 12 month period

 

  • Monitoring room air in cold storage
  • Refrigerant leak detection