• Usually ships in 2-3 weeks



  • Flexible one or two-sensor capability, local and/or remote
  • One user-interface platform for all sensor types
  • Two analog outputs and Modbus RTU interface
  • Repeatability: ±5% of applied gas concentration
  • Three fully configurable, user-assignable relays
  • Magnetic wand enables easy, non-intrusive configuration/calibration
  • General purpose ABS IP66 enclosure with four M20 x 1.5 cable glands
  • 5-digit, 7-segment LED display with status LEDs
  • Output:
    • Analog: 4 to 20 mA, 0 to 5 V, 0 to 10 V, 1 to 5 V, 2 to 10 V
    • Digital: Modbus RTU via RS 485
  • Power Supply: 19.5 to 28.5 VDC or 24 VAC ± 20%; 3- or 4-wire
  • Approvals CE, UL / CSA / IEC EN 61010-1


The Bacharach MGS-550 gas detector is a flexible-platform instrument which is easily customized for a wide variety of challenging applications. The MGS-550 is user-configurable and capable of utilizing electrochemical, semiconductor, catalytic bead and infrared sensors to detect an extensive range of refrigerants, combustible and toxic gases, as well as VOCs in industrial, commercial and institutional environments.

The MGS-550 can be connected to any central BMS control system (via Modbus connection) or, with its three onboard user-assignable relays, can easily function as a stand-alone unit without the need to wire alarm devices back to a central system. Providing the ultimate in flexibility, the instrument can be upgraded at any time from a one-sensor unit to a two-sensor system by simply installing another sensor. Both analog interfaces can be assigned as either redundant or specific for each of the sensors. The simple, single level menu interface throughout the MGS-550 platform significantly reduces the amount of training required for maintenance and installation.