For detection of Methane (CH 4 ), Propane (C 3 H 8 ), Butane (C 4 H 10 ), Hydrogen (H 2 ) and other Combustible Gases Features • igh-accuracy Catalytic Bead H (Pellistor) explosion proof sensor. • Explosion Proof enclosure • -20mA analog output or 4 optional 0-1V DC, 0-5V DC or 0- 10V DC analog outputs. • emote sensor-transmitter R on a RS-485 comunication network compatible with Acme’s popular CEL-Series centralized multipoint/multigas detection and control systems. • nergy savings through the E intermittent operation of ventilation equipment in enclosed areas. • ommercial or industrial locations C where a sudden build-up of combustible gases may occur. • nderground parking, boiler rooms, U landfills, storage rooms, etc. • tand-alone with standard analog S outputs for direct connection to the existing Building Management System (BMS) or DDCS. he Acme Combustible gas sensor-transmitter measures the concentration of the target gas in an enclosed area and produces a proportional analog output signal. The Acme 40-ST Combustible Gas sensor is explosin proof. The enclosure of the sensor-transmitter is a explosion proof enclosure. The 40-ST series employs a diffusiontype catalytic bead (pellistor) sensor capable of detecting a broad range of combustible gases. It provides instantaneous detection of these coumponds and has long term reliability and trouble free operation. With the increased use of gas detection in maintenance and industrial facilities, the 40-ST allows installers and users to meet code requirements in an economical fashion using commercial-grade gas detection equipment. Designed to act as fixed in-situ safety monitors, the 40-ST sensor-transmitter automatically operates the mechanical ventilation system of a facility upon detection of combustible gases, thereby protecting occupants, personnel and gas-sensitive goods and products. The 40-ST contains all the wellknown standard features of ACME’s gas detection line; a robust enclosure, the latest sensor technology and state-of-the-art electronics. For more versatile gas detection options, consult the ACME b

Ordering Information Standard unit specifications Gases detected: Methane, Propane, Hydrogen, etc. MODEL NUMBER Sensor Technology: Catalytic Bead (Pellistor) type. Sensing Method: Diffusion. P ower Requirements: 24V AC 50/60Hz. Outputs Available: Operating Temp.: -4ºF to 120ºF (-20ºC to +50ºC)* Humidity Range: 10-95% RH Accuracy: +/- 5% of calibrated value Repeatability: 2% of signal Response Time (T90%): < 30 seconds Expected Lifetime: 3 years Enclosure: Explosion Proof - Class 1 Output Signal and other Options *X OUTPUT SIGNAL * Extended temperature range available. Explosion Proof mounting...