ACME Gas Post - Model 40-XP Series -Explosion Proof Combustible Gas Sensor-Transmitters

The 40-ST series employs a diffusion-type catalytic bead (pellistor) sensor capable of detecting a broad range of combustible gases. It provides instantaneous detection of these compounds and has long-term reliability and trouble-free operation. 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.

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. The 40-ST contains all the well-known 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 binder or website.

For more information about this product please click the Product Literature, Specifications, and or Application Request Form links provided on this page

• High-accuracy Catalytic Bead (Pcllistor) explosion proof sensor.
• Explosion Proof enclosure
• 4-20mA analog output or optional 0-1V DC, 0-5V DC or 0- 10V DC analog outputs.
• Remote sensor-transmitter on a RS-485 comunication network compatible with Acmes popular CEL-Series centralized multipoint/multigas detection and control systems.

• Energy savings through the intermittent operation of ventilation equipment in enclosed areas.
• Commercial or industrial locations where a sudden build-up of combustible gases may occur.
• Underground parking, boiler rooms, landfills, storage rooms, etc.
• Stand-alone with standard analog outputs for direct connection to the existing Building Management System (BMS) or DDCS.

• Gases Detected: Methane, Propane, Hydrogen, etc.
• Sensor Technology: Catalytic Bead (Pellistor) type.
• Sensing Method: Diffusion.
• Power Requirements: 24V AC 50/60Hz.
• Outputs Available: 4-20mA 0-1V DC 0-5V DC 0-10VDC RS-485
• Operating Temp.: -4°F to 120-F (-20°C to +50°C)
• 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
• Dimensions: 11" (L)x ?4"(D)x 3"(D), (279mm x 101mm x 75mm)