The RKI low cost CO/H2S transmitter is a highly reliable and very cost effective basic 4-20 mA transmitter for the detection of carbon monoxide and hydrogen sulfide. The electronics are protected inside a plastic enclosure to avoid damage from mechanical abuse, water, dust or corrosion. Sensors for H2S and CO are long life and typically last 2 - 3 years.
The transmitter operates from 24 VDC (11VDC to 30 VDC), and provides a 4-20 mA signal which can be connected to a wide variety of controllers. The low cost CO/H2S can be used either indoors or in semi-enclosed areas.
The only tools required to calibrate the low cost CO/H2S transmitter are a voltmeter, screwdriver, and calibration gas. The zero and calibration functions are performed by adjusting potentiometers on the amplifier board. The amplifier board has test jacks for the connection of a voltmeter for calibration purposes, and the sensor response is viewed on the voltmeter as a 100mV to 500mV signal. Field calibration can be performed easily and quickly by one person.
(2 wire system)
|Signal Output||4 mA at 0 ppm H2S
20 mA at 100 ppm H2S
|4 mA at 0 ppm CO
20 mA at 300 ppm CO
|20 seconds to 90%
|45 seconds to 90% of concentration|
|Temperature||0 to 120° F|
2.5" W x 4.0" H x 1.5" D
|Life Expectancy||2 years normal service when intermittently exposed to H2S||2 to 3 years normal service|
|Zero||Sets transmitter output to 4 mA with zero output from H2S sensor||Sets transmitter output to 4 mA with zero output from CO sensor|
|Span||Sets transmitter output to 20 mA with 100 ppm output from H2S sensor||Sets transmitter output to 20 mA with 300 ppm output from CO|
* Specifications subject to change without notice.
Made in the USA