• +6012-710 5847, +603-5549 3208
  • enquiry@isokimia.com.my

Iso Kimia (M) Sdn Bhd
5, Jalan Pelabur 23/1,
40300 Shah Alam,
Selangor, Malaysia.
+6012-710 5847
+603-5549 3208

MGS-250 Gas Detector

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MGS-250 Gas Detector Refrigerant Monitoring System Bacharach (USA) Fixed Gas Detector MGS-250 Gas Detector Refrigerant Monitoring System Bacharach (USA) Fixed Gas Detector

Infrared Refrigerant Gas Detector
  • Long-life, proprietary infrared (NDIR) sensor
  • Detects CFCs, HFCs, HCFCs and new HFO refrigerants
  • No cross interference to other gases, humidity or temperature
  • Modbus RTU interface, analog output, BAS/BMS system connectivity
  • Set all parameters and outputs without opening the unit


Bacharach's MGS-250 Infrared Refrigerant Gas Detector is the leader in performance and flexibility. It can be configured as either a broadband sensor used for gross leak detection, or as a gas-specific version that’s pre-calibrated and characterized for precision response to individual refrigerants. The MGS-250 is the economical solution for detecting refrigerants without the limitations posed by solid-state sensor technologies.

Advanced infrared sensing technology makes the MGS-250 immune to cross sensitivities from combustible and toxic gases, as well as changes in temperature and humidity. The infrared sensor provides low-level leak detection and delivers up to 5 to 7 years of virtually maintenance-free operation. The MGS-250 has an alpha-numeric LED display, status indicator, on-board relay, and alarm to alert personnel when levels have exceeded the preset limit.


Leak detector using IR sensors


Refrigerants – CFCs, HCFCs, HFCs, HFOs

Measuring Range

0 to 3,500 ppm


4-digit, 7-segment red LED and green status LED



4 to 20 mA, 0 to 5 V, 0 to 10 V, 1 to 5 V, 2 to 10 V


Modbus RTU via RS 485

Power Supply

24 VDC or 24 VAC; 3- or 4-wire



1 alarm relay, SPDT

Rating 1 A @ 24 VDC, 0.25 A @ 240 VAC, resistive load

Alarm delay 0 to 15 minutes; user-programmable

Ambient Conditions


- 22 to +104 °F (- 30 to +40 °C)


5 to 90 %RH, non condensing


0 to 10,000 ft (3,050 m)


ABS; snap-in cable gland for 0.115 to 0.25” cable

Size (w x h x d)

Approx. 4.0” x 5.5” x 1.5” (100 x 140 x 40 mm)


Approx. 6.3 oz (180 g)


CE, UL, CSA, IEC, EN 61010-1

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