RKI Replacement H2S Sensor ESR-A13i-H2S
Description
The RKI Replacement H2S Sensor ESR-A13i-H2S is a factory-replacement electrochemical hydrogen sulfide sensor for compatible RKI portable gas monitors,
including the GX-3R and GX-3R pro. H2S sensors are among the most frequently replaced sensor types in field gas-detection programs: H2S is a highly reactive gas that can exhaust or poison an electrochemical cell faster than CO or O2 sensors, particularly in oil and gas, wastewater, and confined-space environments where H2S concentrations can spike rapidly.
OSHA's ceiling limit for H2S is 20 ppm — meaning no worker exposure should exceed this value at any point during a shift (29 CFR 1910.1000, Table Z-2). A sensor that has drifted or stopped responding to H2S can fail to alarm during a life-threatening exposure event. Regular bump testing and prompt sensor replacement are essential elements of any H2S gas-detection program.
Part number: ESR-A13i-H2S — 3-year manufacturer warranty included.
After replacing the sensor, perform a full calibration using RKI-approved H2S calibration gas before returning the instrument to service. Contact PK Safety for RKI-authorized service support at
800-829-9580 Monday–Friday.
Frequently Asked Questions
Which RKI monitors is the ESR-A13i-H2S hydrogen sulfide sensor compatible with?
The ESR-A13i-H2S is a replacement H2S sensor for select RKI portable gas monitors. Verify compatibility with your specific instrument model in the RKI sensor-compatibility guide or contact PK Safety at
800-829-9580 before ordering.
How often should I replace an H2S sensor in a high-exposure environment?
In environments with frequent or elevated H2S exposure — such as oil and gas production, wastewater lift stations, or confined-space work in sewers — sensor exhaustion can occur faster than the rated lifespan. Bump test before every shift: if the sensor does not respond within specification, replace it immediately rather than waiting for a calendar interval.
What is the OSHA limit for hydrogen sulfide exposure?
OSHA's ceiling concentration for H2S is 20 ppm — this is a ceiling value, not a time-weighted average, meaning worker exposure should not exceed 20 ppm at any moment (29 CFR 1910.1000, Table Z-2). NIOSH's IDLH (immediately dangerous to life or health) value is 50 ppm. Your H2S sensor must be functioning and calibrated to detect concentrations within OSHA's ceiling limit.
Do I need to calibrate after replacing the H2S sensor?
Yes. A full calibration using RKI-approved H2S calibration gas is required after sensor replacement before the instrument can return to service. Follow RKI's recommended calibration procedure in your monitor's user manual, or contact PK Safety for RKI-authorized service.
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Description
The RKI Replacement H2S Sensor ESR-A13i-H2S is a factory-replacement electrochemical hydrogen sulfide sensor for compatible RKI portable gas monitors, including the GX-3R and GX-3R pro. H2S sensors are among the most frequently replaced sensor types in field gas-detection programs: H2S is a highly reactive gas that can exhaust or poison an electrochemical cell faster than CO or O2 sensors, particularly in oil and gas, wastewater, and confined-space environments where H2S concentrations can spike rapidly.
OSHA's ceiling limit for H2S is 20 ppm — meaning no worker exposure should exceed this value at any point during a shift (29 CFR 1910.1000, Table Z-2). A sensor that has drifted or stopped responding to H2S can fail to alarm during a life-threatening exposure event. Regular bump testing and prompt sensor replacement are essential elements of any H2S gas-detection program.
Part number: ESR-A13i-H2S — 3-year manufacturer warranty included.
After replacing the sensor, perform a full calibration using RKI-approved H2S calibration gas before returning the instrument to service. Contact PK Safety for RKI-authorized service support at 800-829-9580 Monday–Friday.
Frequently Asked Questions
Which RKI monitors is the ESR-A13i-H2S hydrogen sulfide sensor compatible with?
The ESR-A13i-H2S is a replacement H2S sensor for select RKI portable gas monitors. Verify compatibility with your specific instrument model in the RKI sensor-compatibility guide or contact PK Safety at 800-829-9580 before ordering.
How often should I replace an H2S sensor in a high-exposure environment?
In environments with frequent or elevated H2S exposure — such as oil and gas production, wastewater lift stations, or confined-space work in sewers — sensor exhaustion can occur faster than the rated lifespan. Bump test before every shift: if the sensor does not respond within specification, replace it immediately rather than waiting for a calendar interval.
What is the OSHA limit for hydrogen sulfide exposure?
OSHA's ceiling concentration for H2S is 20 ppm — this is a ceiling value, not a time-weighted average, meaning worker exposure should not exceed 20 ppm at any moment (29 CFR 1910.1000, Table Z-2). NIOSH's IDLH (immediately dangerous to life or health) value is 50 ppm. Your H2S sensor must be functioning and calibrated to detect concentrations within OSHA's ceiling limit.
Do I need to calibrate after replacing the H2S sensor?
Yes. A full calibration using RKI-approved H2S calibration gas is required after sensor replacement before the instrument can return to service. Follow RKI's recommended calibration procedure in your monitor's user manual, or contact PK Safety for RKI-authorized service.
The RKI Replacement H2S Sensor ESR-A13i-H2S is a factory-replacement electrochemical hydrogen sulfide sensor for compatible RKI portable gas monitors, including the GX-3R and GX-3R pro. H2S sensors are among the most frequently replaced sensor types in field gas-detection programs: H2S is a highly reactive gas that can exhaust or poison an electrochemical cell faster than CO or O2 sensors, particularly in oil and gas, wastewater, and confined-space environments where H2S concentrations can spike rapidly.
OSHA's ceiling limit for H2S is 20 ppm — meaning no worker exposure should exceed this value at any point during a shift (29 CFR 1910.1000, Table Z-2). A sensor that has drifted or stopped responding to H2S can fail to alarm during a life-threatening exposure event. Regular bump testing and prompt sensor replacement are essential elements of any H2S gas-detection program.
Part number: ESR-A13i-H2S — 3-year manufacturer warranty included.
After replacing the sensor, perform a full calibration using RKI-approved H2S calibration gas before returning the instrument to service. Contact PK Safety for RKI-authorized service support at 800-829-9580 Monday–Friday.
Frequently Asked Questions
Which RKI monitors is the ESR-A13i-H2S hydrogen sulfide sensor compatible with?
The ESR-A13i-H2S is a replacement H2S sensor for select RKI portable gas monitors. Verify compatibility with your specific instrument model in the RKI sensor-compatibility guide or contact PK Safety at 800-829-9580 before ordering.
How often should I replace an H2S sensor in a high-exposure environment?
In environments with frequent or elevated H2S exposure — such as oil and gas production, wastewater lift stations, or confined-space work in sewers — sensor exhaustion can occur faster than the rated lifespan. Bump test before every shift: if the sensor does not respond within specification, replace it immediately rather than waiting for a calendar interval.
What is the OSHA limit for hydrogen sulfide exposure?
OSHA's ceiling concentration for H2S is 20 ppm — this is a ceiling value, not a time-weighted average, meaning worker exposure should not exceed 20 ppm at any moment (29 CFR 1910.1000, Table Z-2). NIOSH's IDLH (immediately dangerous to life or health) value is 50 ppm. Your H2S sensor must be functioning and calibrated to detect concentrations within OSHA's ceiling limit.
Do I need to calibrate after replacing the H2S sensor?
Yes. A full calibration using RKI-approved H2S calibration gas is required after sensor replacement before the instrument can return to service. Follow RKI's recommended calibration procedure in your monitor's user manual, or contact PK Safety for RKI-authorized service.
Specifications
Specifications
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