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ACME Engineering Explosion Proof Gas Post


The 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 explosion proof. The enclosure of the sensor-transmitter is a explosion proof enclosure.

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.



  • High-accuracy Catalytic Bead (Pellistor) 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 Acme’s popular CEL-Series centralized multipoint/multigas detection and control systems.



Mounting Arrangement: