Detcon Model DM-100-AsH3 is a gas detection sensor designed to detect and monitor Arsine in air over the range of 0-1 ppm using electrochemical sensor technology.
Method of detection is by diffusion adsorption. Air and gas molecules diffuse through a porous membrane contacting an electrolyte solution which creates a change in electrical conductance between a reference and measure electrode.
This change in conductance is conditioned by internal electronic circuitry to provide a linear 4-20 milliamp signal proportional to the gas concentration.
Model DM-100 Series sensors feature intelligent electronics, non-intrusive operator interface and comprehensive fault diagnostics. The sensor is packaged in an electro-polished 316 stainless steel housing fitted with a ¾ inch NPT thread.
The plug-in, field replaceable sensor cell features large surface area gold-plated pins that reduce the effects of corrosion in harsh industrial environments.
Signal conditioning electronics are completely encapsulated in the sensor housing adding a high level of durability to the design. The packaging is XP-intrinsically safe.
This innovative design marks a return to a simple, more affordable, and durable gas detection sensor without compromising quality.
Model DM-100 sensors provide a 2-wire loop powered 4-20 mA current signal equivalent to the sensor range of detection. Upper enclosure options are aluminum and stainless steel (includes a transient protection terminal board).
Additional accessories include wireless communications, a loop powered digital display, Remote Alarm Module (RAM), HART, and a current to RS-485 converter.
The standard serial converter is Modbus RTU. Each sensor is shipped with a splash guard with integral calibration port. Detcon’s toxic gas sensors have a long shelf life and are supported by an industry-leading warranty
XP-intrinsically Safe
NEMA 4X Weatherproof & NEMA 7 Explosion Proof
Class I, Div. 1, Groups A, B, C, & D
2 Wire Loop-powered
Field Replaceable Electrochemical Sensor
Non-intrusive Magnetic Interface
Built-in Diagnostics
Fully Encapsulated Electronics
Electropolished 316SS Construction
Quick Thread Release (for sensor replacement)
Integral Calibration Port
Sensor Type |
Continuous diffusion/adsorption 3-electrode electrochemical cell Plug-in field replaceable Type |
Measurement Range |
0-1 ppm, Other ranges available |
Accuracy/Repeatability |
±2% FS |
Response/Clearing Time |
T90 <60 seconds |
Span Drift |
<5% signal loss per month |
Outputs |
Linear 4-20 mA DC |