Combustible Explosion Proof Sensor

The 301EM-20 acts as a controller for up to 20 remote sensors and suits a variety of gas detection system solutions for Mechanical Rooms. Particularly configured to meet ASHRAE 15, B-52 and International Mechanical Code requirements, the 301EM-20 is commonly used to optimize gas detection in mechanical and chiller rooms. A full complement of sensors (including toxic, oxygen, combustible gases and a full line of refrigerant sensors), horns, strobes and remote panels provide added flexibility to suit a variety of gas detection system solutions. The 301EM Expansion Module allows the monitoring of toxic and combustible gases and refrigerants. Up to four sensors can be placed 500' away for toxic and combustible gases, and 200' away for refrigerant gas monitoring. The transmitter is equipped with a backlit LCD display and keypad that can be placed in a safe area, remote from the sensors. Alarm relays and Modbus communication are standard. The unit is compatible with the 301C controller.

• Explosion proof sensors for combustible and toxic gases
• Easy to read LCD display
• Auto-diagnostic capabilities
• Cost-effective answer for installation in Mechanical Rooms locations
• Able to operate with up to 20 remote sensors at a time
• Various types of sensors available to simultaneously detect a range of different Refrigerant, Toxic and Combustible gases
• Robust and reliable RS-485 Modbus communication
• Three 24 Vdc alarm outputs and four 4-20 mA outputs
• Three alarm levels with built-in visual indicators and audible alarm
• Convenient stand-alone or network operation

• UL 61010-1
• CSA C22.2 No. 61010-1-04