MGS-408 Gas Detection Controller

8-Channel Controller for Refrigerant, Toxic and Combustible Gas Detection

Bacharach’s MGS-408 Controller centralizes the status of eight gas detectors to enable compliance with refrigeration safety codes (ASHRAE 15, EN 378, CSA-B52).

  • Centralized power and communications for up-to eight connected gas sensors, including the MGS-250, MGS-410, MGS-450, MGS-460 and MGS-550
  • Digital display shows real-time concentration readings for all connected gas detectors and makes configuration and self-diagnostics intuitive
  • Tri-color LED indicators provide “at-a-glance” system / alarm status
  • Integrated SD card retains the alarm / status history of the gas detection system
  • Modbus communications (slave) for integration with third-party BMS / BAS control systems
  • Three user-configurable relays (fault, low and high alarm) may be used to activate external beacons / sounders, ventilation or other countermeasures
  • Integrated audible / visual alarms with push button silence for refrigeration safety compliance – no additional hardware
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Bacharach’s MGS-408 Gas Detection Controller centralizes the status of up to 8 gas detection channels in a single location. The digital display provides a real-time view of the gas concentration and status at each gas detection point. It also allows for the controller to be configured in minutes vie the intuitive menu system. A bank of LEDs corresponds to each connected gas detector; showing power, alarm status and fault indicators.

The MGS-408 can provide power for up to 8 gas detectors, which can be daisy-chained along with Modbus communication to each gas detector; simplifying and reducing the cost of installation. Integration is possible with Bacharach’s MGS-400 series, MGS-250 and MGS-550 Gas Detector platforms; allowing for a flexible gas detection system design which can utilize the benefits of multiple gas detector types as required in different locations (machinery rooms, cold storage rooms, walk-in freezers and food preparation areas).

Combining the MGS-408 with Bacharach’s range of gas detectors provides a single system with an easy means of achieving compliance with refrigeration safety standards such as EN 378 and ASHRAE 15.

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Sensors: 8
Enclosure Rating: General Purpose
User Interface: LCD display, user naviation buttons
Power: 100 - 240 VAC, 50 / 60 HZ, 80W (maximum)
Digital Communications: Modbus RTU via RS 485
Operating Voltage: 100 to 240 VAC, 50/60 Hz
Relay Rating: 2 Alarm relays, 1 Fault relay SPDT
Wiring: 2 A @ 250VAC
Alarm: Integrated Audible / Visual Alarm
Ambient Temperature: 32 - 113°F (0 - 45°C)
Humidity: 5 to 90% RH, non-condensing
Altitude: 0 to 6,560 ft (2,000 m)
Status Indicator: LCD display, Tri-color LED (green, red, orange) per channel
Buzzer Volume: 80 dB @ 10 cm
Product Dimensions (L×W×H): 11.0” × 8.5” × 3.9” (280 × 215 × 100 mm)
Product Weight: 2lb, 12.1oz (1250 g)
Approvals: CE, UL / CSA / IEC EN 61010-1
Internal Memory: 16GB microSD Card
Warranty: 1 Year
Country of Origin: United States
Description Part Number
MGS-408 Controller 6702-8000
Description Part Number
External Beacon / Sounder (Red Lens) 1100-2307
External Beacon / Sounder (Green Lens) 1100-2308
External Beacon / Sounder (Blue Lens) 1100-2309
External Beacon / Sounder (Yellow Lens) 1100-2310