OI-675 2-Wire Electrochemical Toxic Gas Detector


The Otis Instruments, Inc. OI-675 Series Toxic Gas Detector is a versatile assembly that uses an electrochemical sensor to detect a variety of gases. 2-Wire Loop-Powered to withstand extreme climatic conditions and harsh environments. Magnetic switches allow for non-intrusive calibration while in the field as well as full system settings and diagnostics.

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Power Input: 12-24 VDC


  • “4” Series

  • Electrochemical

Operating Temperature Range: -40 to +50 C (for standard gases)

Enclosure: Moore Explosion Proof


  • CSA Certified

  • Class I, Div. I

  • Groups C & D

Amp/Transmitter: 4-20mA output

Accuracy: +/- 5% full-scale


  • Device- One year (limited)

  • Sensor- Two years (varies with sensor type)

Gas Type: H2S, CO, O2, SO2

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