M Series Low Cost Transmitter
Contact Our
Sales
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.
- Water/dust resistant housing
- Available for H2S and CO
- Long life sensors (2 + years typical)
- Competitively priced
- Compact design
- Water & wastewater treatment plants
- Pulp & paper mills
- Gas, telephone & electric utilities
- Parking garages
- Manufacturing facilities
- Loading docks
| 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) | |
| 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 | Indoors or semi-enclosed areas | |
| Temperature | 0 to 120° F | |
| Humidity | 0 – 99% RH, non condensing | |
| Housing | Plastic, water / dust resistant enclosure 2.5″ W x 4.0″ H x 1.5″ D | |
| Sensor | ||
| Type | Electrochemical | |
| 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 | Screwdriver and voltmeter used to make adjustments | |
* Specifications subject to change without notice.
Made in the USA