MGS-400 Gas Detection Series

Gas Detection Solution for Safety Compliance

• Mobile app interface for easy commissioning and maintenance without specialty tools
• Plug-and-play pre-calibrated sensor modules for quick, simple sensor replacement
• Temperature-compensated measurements mitigate false alarms and optimize accuracy in refrigeration
  applications
• Digital and analog communications for integration with BMS / BAS control systems
• Onboard A/V alarms for ASHRAE 15 and EN 378 compliance with no additional hardware

Bacharach's MGS-400 Series Gas Detectors make compliance with refrigeration safety codes (e.g., ASHRAE 15 and 
EN 378) simple and easy, saving time and money on equipment and installation. Using the MGS-400 App 
(compatible with Android and iOS), users can intuitively use, commission and maintain their gas detection system 
without the need for specialty training or tools. Pre-calibrated sensor modules simplify maintenance, take minutes 
to exchange, and do not require the use of calibration gas.

MGS-400 Series Gas Detectors allow installers to daisy-chain power (24V DC) and Modbus communication cables 
across the system, and can be easily integrated into a BMS / BAS, or with Bacharach's optional MGS-408 Gas 
Detection Controller.

Gases and Ranges

Refrigerants					               1,000 ppm

CO2						               5,000 / 10,000 / 20,000 / 30,000 / 40,000 / 50,000 ppm

NH3						               100 / 1,000 / 5,000 ppm / 100% LEL

O2						              30 Vol%

CO						              500 / 1,000 ppm

Combustible Gases - Semiconductor 		             5,000 ppm
(R-290, R-600, CH4, R-600a, HC-12a, R-717)

Combustible Gases - Catalytics 			             100% LEL
(R-600, CH4, R-290, NH3)

NO2						                     20 ppm


Ambient Conditions

Temperature Semiconductor			             -40 to 122 °F / -40 to 50 °C

Temperature Electrochemical			             NH3 100 / 1,000 ppm: -40 to 40 °C
						                     NH3 5,000 ppm: -20 to 40 °C
						                     CO 500 ppm: -40 to 50 °C
						                     NO2 20 ppm: -20 to 40 °C
						                     O2 30% Volume: -20 to 50 °C

Humidity					                     5 to 90% RH, non-condensing

Pressure					                     23.6 to 32.5 inch Hg / 800 to 1,100 mbar


Technical Specifications

Status Indicator				                     Tri-color LED (green, red, orange)

Buzzer						             72dB @ 10 cm

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