Detcon Model DM-100-SO2 is a gas detection sensor designed to detect and monitor sulfur dioxide in air over a range of 0 to 20 ppm using electrochemical sensor technology.
The detection method is by diffusion adsorption. The molecules of air and gas diffuse through a porous membrane in contact with an electrolyte solution that creates a variation of the electrical conductance between a reference electrode and a measurement electrode.
This conductance change is conditioned by internal electronic circuits to provide a linear signal of 4 to 20 milliamperes proportional to the gas concentration.
The sensors in the DM-100 series feature intelligent electronics, a non-intrusive operator interface and a comprehensive fault diagnosis.
The sensor is packaged in a housing 316 electropolished stainless steel equipped with a NPT ¾ inch.
The field-replaceable, plug-in sensor cell features large-area gold-plated pins that reduce the effects of corrosion in harsh industrial environments.
The signal conditioning electronics are fully encapsulated in the sensor housing, which adds a high level of durability to the design. The packaging is intrinsically safe.
This innovative design marks the return to a simple, more affordable and durable gas detection sensor without compromising quality.
The DM-100's sensors provide a 4-20 mA current signal powered by a 2-wire loop, equivalent to the sensor's sensing range.
The upper housing options are aluminum and stainless steel (includes a transient protection terminal block).
Additional accessories include wireless communications, a loop-powered digital display, a remote alarm module (RAM), a HART, and an RS-485 power converter.
The standard serial converter is Modbus RTU. Each sensor comes with a splashguard with an integrated calibration port.
Detcon's toxic gas detectors have a long service life and are backed by a first-class warranty.
XP intrinsically safe
NEMA 4X Weather Resistant and NEMA 7 Explosion Proof
Class I, Div. 1, Groups A, B, C and D
2-wire loop
Replaceable electrochemical field sensor
Non-intrusive magnetic interface
Integrated diagnostics
Fully encapsulated electronics
Electropolished 316SS construction
Quick release of the thread (for sensor replacement)
Built-in calibration port
Sensor type |
Continuous diffusion / adsorption Electrochemical cell with 3 electrodes Pluggable Field Type Replaceable |
Measuring range |
0-20 ppm, Other ranges available |
Precision / Repeatability |
±2% FS |
Response / compensation time |
T90 ≤20 seconds |
Span Drift |
<2% loss of signal per month |
Outputs |
Linear 4-20 mA DC |