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| Low Cost Transmitter | M-Series |
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Features
Applications
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| 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. |
| Part # | H2S 65-2424RK |
CO 65-2434RK |
|---|---|---|
| Min Operating Voltage |
11 VDC | |
| Max Operating Voltage |
30 VDC | |
| Max Current Draw |
25 mA (2 wire system) |
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| 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 |
| Response Time |
20 seconds to 90% of concentration |
45 seconds to 90% of concentration |
| Operating Environment | ||
| Location |
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| Temperature | 0 to 120° F | |
| Humidity |
non condensing |
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| Housing |
2.5" W x 4.0" H x 1.5" D |
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| Sensor | ||
| Type |
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| Life Expectancy | 2 years normal service when intermittently exposed to H2S | 2 to 3 years normal service |
| Controls | ||
| 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 |
| Tools Needed |
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* Specifications subject to change without notice
Made in the USA
