Expert Guidance Monday-Friday, 6:30am-4pm PST. Call Now! Request a Quote Click Here!

SKU: RKI01-ESR-A13P-CO

RKI Replacement CO Sensor ESR-A13P-CO

$171.43

Ships in 5 - 7 days

Description

The RKI Replacement CO Sensor ESR-A13P-CO is a factory-replacement electrochemical carbon monoxide sensor for compatible RKI portable gas monitors, including the GX-3R and GX-3R pro. CO sensors degrade over time through chemical exhaustion and exposure to high-concentration events, and must be replaced when bump-test response or calibration results no longer meet specifications.

Carbon monoxide is a colorless, odorless gas produced by combustion equipment, vehicle exhaust, and industrial processes. OSHA's permissible exposure limit (PEL) for CO is 50 ppm as an 8-hour TWA (29 CFR 1910.1000). A CO sensor that under-reads a high-concentration event can allow dangerous or lethal exposures before an alarm triggers.

Part number: ESR-A13P-CO — 3-year manufacturer warranty included.

After installing a replacement sensor, perform a full calibration using RKI-approved CO calibration gas before returning the instrument to service. Refer to your monitor's user manual for sensor-access procedures, or contact PK Safety for RKI-authorized service support at 800-829-9580 Monday–Friday.


Frequently Asked Questions

Which RKI monitors is the ESR-A13P-CO carbon monoxide sensor compatible with?

The ESR-A13P-CO is designed as a replacement CO sensor for select RKI portable multi-gas monitors. Check your instrument's user manual or the RKI sensor-compatibility guide for your specific model, or contact PK Safety at 800-829-9580 before ordering.

How long does an RKI CO sensor last?

Electrochemical CO sensors typically last 2–3 years under normal operating conditions. Exposure to very high CO concentrations, extreme humidity, or temperature extremes can shorten sensor life. The ESR-A13P-CO carries a 3-year manufacturer warranty, but bump-test performance is the true indicator of remaining sensor life.

What is the OSHA permissible exposure limit for carbon monoxide?

OSHA's PEL for CO is 50 ppm as an 8-hour time-weighted average (29 CFR 1910.1000). NIOSH's recommended exposure limit (REL) is 35 ppm TWA with a 200 ppm ceiling. Most RKI monitors are configured with alarm thresholds within OSHA's PEL guidance — verify your monitor's alarm set points and consult your site safety program.

Do I need to calibrate my monitor after replacing the CO sensor?

Yes. Full calibration is required after any sensor replacement before the instrument can be returned to service. Use RKI-approved CO calibration gas at the correct concentration. Bump-test the new sensor after calibration to confirm alarm response before the next shift.

Read more

The RKI Replacement CO Sensor ESR-A13P-CO is a factory-replacement electrochemical carbon monoxide sensor for compatible RKI portable gas monitors, including the GX-3R and GX-3R pro. CO sensors degrade over time through chemical exhaustion and exposure to high-concentration events, and must be replaced when bump-test response or calibration results no longer meet specifications.

Carbon monoxide is a colorless, odorless gas produced by combustion equipment, vehicle exhaust, and industrial processes. OSHA's permissible exposure limit (PEL) for CO is 50 ppm as an 8-hour TWA (29 CFR 1910.1000). A CO sensor that under-reads a high-concentration event can allow dangerous or lethal exposures before an alarm triggers.

Part number: ESR-A13P-CO — 3-year manufacturer warranty included.

After installing a replacement sensor, perform a full calibration using RKI-approved CO calibration gas before returning the instrument to service. Refer to your monitor's user manual for sensor-access procedures, or contact PK Safety for RKI-authorized service support at 800-829-9580 Monday–Friday.


Frequently Asked Questions

Which RKI monitors is the ESR-A13P-CO carbon monoxide sensor compatible with?

The ESR-A13P-CO is designed as a replacement CO sensor for select RKI portable multi-gas monitors. Check your instrument's user manual or the RKI sensor-compatibility guide for your specific model, or contact PK Safety at 800-829-9580 before ordering.

How long does an RKI CO sensor last?

Electrochemical CO sensors typically last 2–3 years under normal operating conditions. Exposure to very high CO concentrations, extreme humidity, or temperature extremes can shorten sensor life. The ESR-A13P-CO carries a 3-year manufacturer warranty, but bump-test performance is the true indicator of remaining sensor life.

What is the OSHA permissible exposure limit for carbon monoxide?

OSHA's PEL for CO is 50 ppm as an 8-hour time-weighted average (29 CFR 1910.1000). NIOSH's recommended exposure limit (REL) is 35 ppm TWA with a 200 ppm ceiling. Most RKI monitors are configured with alarm thresholds within OSHA's PEL guidance — verify your monitor's alarm set points and consult your site safety program.

Do I need to calibrate my monitor after replacing the CO sensor?

Yes. Full calibration is required after any sensor replacement before the instrument can be returned to service. Use RKI-approved CO calibration gas at the correct concentration. Bump-test the new sensor after calibration to confirm alarm response before the next shift.

Specifications

  • Product Weight (lbs.)
    2
  • Height (in.)
    1
  • Length (in.)
    10
  • Width (in.)
    6
  • Country of Origin
    JP

Reviews

Keep your team protected & compliant!

  • Expert guidance tailored to your specific needs
  • Access responsive customer support when you need it
  • Enjoy fast shipping directly to your location
  • Benefit from extensive industry knowledge—75+ years of experience
  • In-house gas detection calibration & repair services available
Close-up of the RKI Replacement CO Sensor ESR-A13P-CO by RKI Instruments, a small round component with "ESR-A13P 9940400531" printed on its red-marked top. It has a circular arrow and dashed line to indicate installation orientation, commonly used in gas monitors.
RKI Instruments

RKI Replacement CO Sensor ESR-A13P-CO

$171.43

The RKI Replacement CO Sensor ESR-A13P-CO is a factory-replacement electrochemical carbon monoxide sensor for compatible RKI portable gas monitors, including the GX-3R and GX-3R pro. CO sensors degrade over time through chemical exhaustion and exposure to high-concentration events, and must be replaced when bump-test response or calibration results no longer meet specifications.

Carbon monoxide is a colorless, odorless gas produced by combustion equipment, vehicle exhaust, and industrial processes. OSHA's permissible exposure limit (PEL) for CO is 50 ppm as an 8-hour TWA (29 CFR 1910.1000). A CO sensor that under-reads a high-concentration event can allow dangerous or lethal exposures before an alarm triggers.

Part number: ESR-A13P-CO — 3-year manufacturer warranty included.

After installing a replacement sensor, perform a full calibration using RKI-approved CO calibration gas before returning the instrument to service. Refer to your monitor's user manual for sensor-access procedures, or contact PK Safety for RKI-authorized service support at 800-829-9580 Monday–Friday.


Frequently Asked Questions

Which RKI monitors is the ESR-A13P-CO carbon monoxide sensor compatible with?

The ESR-A13P-CO is designed as a replacement CO sensor for select RKI portable multi-gas monitors. Check your instrument's user manual or the RKI sensor-compatibility guide for your specific model, or contact PK Safety at 800-829-9580 before ordering.

How long does an RKI CO sensor last?

Electrochemical CO sensors typically last 2–3 years under normal operating conditions. Exposure to very high CO concentrations, extreme humidity, or temperature extremes can shorten sensor life. The ESR-A13P-CO carries a 3-year manufacturer warranty, but bump-test performance is the true indicator of remaining sensor life.

What is the OSHA permissible exposure limit for carbon monoxide?

OSHA's PEL for CO is 50 ppm as an 8-hour time-weighted average (29 CFR 1910.1000). NIOSH's recommended exposure limit (REL) is 35 ppm TWA with a 200 ppm ceiling. Most RKI monitors are configured with alarm thresholds within OSHA's PEL guidance — verify your monitor's alarm set points and consult your site safety program.

Do I need to calibrate my monitor after replacing the CO sensor?

Yes. Full calibration is required after any sensor replacement before the instrument can be returned to service. Use RKI-approved CO calibration gas at the correct concentration. Bump-test the new sensor after calibration to confirm alarm response before the next shift.

View product