Teledyne Detcon Model TP-700 H2S Hydrogen Sulfide Gas Sensor

The Teledyne Detcon Model TP-700 is a robust, explosion-proof hydrogen sulfide (H2S) gas sensor designed for continuous monitoring in hazardous industrial environments. Utilizing solid-state Metal Oxide Semiconductor (MOS) technology, it provides reliable detection of H2S concentrations from 0-100 ppm with high resistance to poisoning and long sensor life exceeding 10 years under normal conditions. Key features include a built-in LED display for real-time readings, non-intrusive interface for calibration and maintenance without declassifying hazardous areas, and compatibility with 4-20 mA output for integration with control systems. Ideal applications include oil and gas production, wastewater treatment, petrochemical plants, and mining operations where H2S exposure poses safety risks. Advantages over electrochemical sensors include superior longevity, reduced maintenance, and better performance in extreme temperatures (-40°C to +75°C). However, it may have slightly slower response times in very low concentrations compared to some optical sensors. This unit appears unused (open box) with a recent calibration tag, making it suitable for immediate deployment. Overall, it enhances workplace safety by enabling early detection and alarm triggering, potentially reducing downtime and compliance costs.