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RKI Gas Detector Heads & Sensors

We sell a range of replacement RKI fixed gas detector parts and sensors at PK Safety. RKI Instruments use electrochemical sensors to detect the presence of hazardous gases, including Oxygen (O2), Carbon Monoxide (CO), Hydrogen Sulfide (H2S), Methane (CH4), and combustibles. These sensors typically need to be replaced once every two to three years. You can extend the life of your gas detector by replacing the sensor on your device. 

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RKI Non-Explosion Proof HCN Direct Connect Sensor - CT-7

RKI Non-Explosion Proof HCN Direct Connect Sensor - CT-7


$595.00

 RKI S2 MPS type LEL Sensor/Transmitter with XP J-Box 65-2380

RKI S2 MPS type LEL Sensor/Transmitter with XP J-Box 65-2380


$995.00

How Does a Gas Detector Sensor Work?

The RKI gas detector sensors are designed to calculate the volume of a target gas in the atmosphere. While technical aspects of sensor design may differ, the idea is to generate an electrical signal proportional to the gas concentration observed. The sensor then passes this charge along to the receiver. The energy created is then converted into PPM or percentage for each target gas. The display shows the readings on the LCD screen. 

How Do I Bump Test My Gas Detector?

You will need to expose the gas detector to a cylinder of the target gas. Flow the test gas across the detector—seal gaps between the two to prevent outside air from reaching the sensor. The cylinder should contain a high enough concentration of the target gas to trigger the alarm on the monitor. If the alarm goes off, the gas detector is working correctly. The nature or concentration of gas inside the cylinder will change over time. Make sure the test gas has not expired before completing the test. Bump testing ensures your gas detection device is working. To test your device’s accuracy, you will need to calibrate it. If the device fails the bump test, you will need to calibrate. We recommend calibrating your gas monitors at least every 6 months.

How Do You Clean a Gas Detector?

You can remove everyday dirt and grime from your gas detector by wiping it down with soap and water. To remove bacteria and germs from the device, use bleach and water. Use between 8 to 10 parts water to one part dish soap. The CDC recommends using 50 parts water to one part bleach. Use a clean rag to dry off the detector once the dirt and bacteria have been removed.

Browse our selection of RKI gas monitors and replacement heads to continue using your device. Contact PK Safety for all of your gas detection equipment needs and to find appropriate replacement sensors and parts for your make and model.

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