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
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Details
| 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
Additional Information
Manufacturer: RKI Instruments