Data sheet


The Detcon Model DM-600IS-H2S Detector is designed to detect and monitor H2S in air in the 0 to 100 ppm range.

The sensor assembly consists of an electrochemical fuel cell mounted in a stainless steel and ABS plastic housing incorporating a splash guard with integrated heat port, a signal conditioning control transmitter circuit, a base board and a explosion-proof junction box.

The intrinsically safe sensor housing design allows direct contact of the target gas with the electrochemical sensor, maximizing response time, detectability and repeatability.

And because the intrinsically safe case design does not use stainless steel flame arresters, it eliminates inaccurate readings due to target gas absorption.

  • CSA and UL Listed: Class 1, Div. 1, Groups B, C and D

  • Outputs: 4-20 mA, RS-485 Modbus ™, 3 relays (2 alarms, 1 fault)

  • Sensor status and parameters accessible via RS-485 Modbus ™

  • Simple Menu Driven Calibration - takes less than 3 minutes

  • Backlit LCD display and LEDs for fault and Cal status

  • Universal transmitter

  • Intrinsically safe sensor housing

  • Replaceable transmitter plug-in

  • Electrochemical pluggable sensor

Sensor type

Electrochemical fuel cell

Measuring range

0-100 ppm hydrogen sulfide

Other ranges available


±2% FS

Response / compensation time

T90 ≤30 seconds

Span Drift

<2% loss of signal per month

Operating temperature range

-40 ° C to + 50 ° C; -40 ° F to + 122 ° F

Operating humidity range

15-90% RH without condensation


Linear 4-20 mA DC

RS-485 Modbus ™

3 relays (alarm 1, 2, fault, 5 amp contacts)