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    DM-700-O2 oxygen sensor cell

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    The DM-700-O2 is a replacement galvanic oxygen sensor cell for Detcon’s DM-700 gas detection system in hazardous areas.

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    The DM-700-O2 is an intelligent plug-in oxygen deficiency sensor cell designed for the Detcon Model DM-700 gas detection system. It features a galvanic cell technology with dual electrodes functioning as a direct current generator proportional to oxygen absorption. The sensor provides accurate measurements across ranges from 0-100ppm up to 0-25% by volume, with temperature compensation for -20°C to +50°C operation. It includes automatic gas type recognition, LED display output, 4-20mA analog output, and RS-485 Modbus interface. The sensor offers field-replaceable design with gold-plated connections, expected service life of 2.5 years in ambient air, and is factory calibrated with a 2-year warranty. Suitable for Class I Division 1 and ATEX Zone 1 hazardous area applications.

    Description

    DM-700-O2 oxygen sensor cell

    The DM-700-O2 is an intelligent plug-in oxygen deficiency sensor cell designed for the Detcon Model DM-700 gas detection system. It features a galvanic cell technology with dual electrodes functioning as a direct current generator proportional to oxygen absorption. The sensor provides accurate measurements across ranges from 0-100ppm up to 0-25% by volume, with temperature compensation for -20°C to +50°C operation. It includes automatic gas type recognition, LED display output, 4-20mA analog output, and RS-485 Modbus interface. The sensor offers field-replaceable design with gold-plated connections, expected service life of 2.5 years in ambient air, and is factory calibrated with a 2-year warranty. Suitable for Class I Division 1 and ATEX Zone 1 hazardous area applications.

    Features

    • Automatic calibration with LED display menu guidance

    • Non-intrusive operator interface via magnetic programming switches

    • Intelligent plug-in sensor with automatic gas type and range recognition

    • Microprocessor-supervised electronics with intrinsically safe barrier circuit

    • No flame arrestors required for Class 1, Division 1 compliance

    • Temperature compensated performance

    • Field replaceable intelligent plug-in sensor

    • 4-20mA analog output with Modbus RS-485 serial interface

    • LED display for current reading and fault/calibration status

    • AutoZero and AutoSpan calibration functions

    • Modular mechanical design

    • Magnetic programming tool for calibration without area de-classification

    Specifications

    Model
    DM-700
    Sensor Type
    Galvanic cell (two electrode metal air battery)
    Detection Ranges
    0-100ppm up to 0-25% by volume
    Operating Temperature
    -20°C to +50°C (-4°F to +122°F)
    Output
    4-20mA DC and Modbus RS-485
    Supply Voltage
    11.5-30VDC (24VDC typical)
    Service Life
    Up to 2.5 years in ambient air at 20.9% oxygen
    Warranty
    Two years
    Electrical Classification
    Class I, Division 1, Groups B, C & D; Class I, Zone 1, Group IIC; II 2G Ex d ib IIC Gb
    Housing Material
    Electro polished 316 Stainless Steel
    Connector
    Male 3/4″ NPT threads
    Stabilization Time
    1 to 2 minutes after power-up
    Display
    Four character alpha/numeric LED

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