MGS-450 Leak Detection System

Safety Gas Detection for Refrigerants, Toxic and Combustible Gases

Bacharach’s MGS-450 Gas Detector makes compliance with refrigeration safety codes (ASHRAE 15EN 378CSA-B52) simple and effective, saving time and money on equipment and installation.

  • Optional IP41 or IP66-rated enclosures protect from dust and water ingress
  • Plug-and-play pre-calibrated sensor modules allow for quick, simple sensor replacement
  • Temperature-compensated measurements mitigate false alarms and optimize accuracy in refrigeration applications (suitable for use in cold rooms and freezers down to -40°C)
  • Configurable analog output (4-20mA, 0-5V, 0-10V, 1-5V or 2-10V) and Modbus communications for integration with Bacharach’s MGS-408 controller or 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 for refrigeration safety compliance – no additional hardware required
  • MGS-400 mobile app (available for Android and iOS) allows users to interface via Bluetooth® with gas detector for easy commissioning and maintenance without specialty tools or training

Product Information

Product Specifications
Sensor Channels:1
Measuring Range:Sensor Dependent (See Datasheet)
Sensitivity / Minimum Detection Limit:Sensor Dependent (See Datasheet)
Accuracy:SC – < -10%/+15% of Full-Scale; IR, Cat, EC – < ±5% of Full-Scale
Resolution:Sensor & Gas Concentration Dependent (See Datasheet)
Enclosure Rating:IP41, IP66
User Interface:MGS 400 Series App
Power:19.5 to 28.5 VDC or 24 VAC ±20%; 4W
Analog Communications:4 to 20 mA, 0 to 5 V, 0 to 10 V, 1 to 5 V, 2 to 10 V
Digital Communications:Modbus RTU via RS 485
Operating Voltage:24 VDC
Relay Rating:2 Alarm relays, 1 Fault relay SPDT
Wiring:1 A @ 30 VDC
Alarm:Integrated Audible / Visual Alarm
Ambient Temperature:-40 to 122°F (-40 to +50°C)
Humidity:5 to 90% RH, non-condensing
Altitude:0 to 6,560 ft (2,000 m)
Status Indicator:Tri-color LED (green, red, orange)
Buzzer Volume:80 dB @ 10 cm
Product Dimensions (L×W×H):IP41: 6.5” × 6.5” × 3.0” (165 × 165 × 77 mm) IP66: 6.5” × 6.5” × 3.4” (165 × 165 × 87 mm)
Product Weight:1lb, 1oz (480 g)
Sensor Type:Sensor Dependent (See Datasheet)
Approvals:CE, UL / CSA / IEC EN 61010-1
Warranty:1 Year
Country of Origin:United States
Accessories and Parts

MGS-402 Gas Detection 2-Channel Controller

MGS-408 Gas Detection 8-Channel Controller

Calibration Adapter

Magnetic Wand

External Beacon / Sounder (Red Lens)

External Beacon / Sounder (Green Lens)

External Beacon / Sounder (Blue Lens)

External Beacon / Sounder (Yellow Lens)


Supported Gases

Contact Us

To speak to a member of our friendly customer service team about any of our products or services, please do not hesitate to contact us on the details below:

Telephone: (+44) 1527 522 299