Manufacturing / Industrial • Inspections

AMI HYDROGEN SULFIDE SENSOR REPLACEMENT

This procedure is for the replacement of the AMI Hydrogen Sulfide sensor to ensure precise and dependable monitoring of hydrogen sulfide levels.

TULS Dairy

02/28/2024

AMI HYDROGEN SULFIDE SENSOR REPLACEMENT

This procedure is for the replacement of the AMI Hydrogen Sulfide sensor to ensure precise and dependable monitoring of hydrogen sulfide levels.

Remove the expired sensor.

Turn the 3-WAY SELECTOR Valve to the OFF position

Open the bag containing the new hydrogen sulfide sensor.

Remove the CELL CAP by turning it counterclockwise.

Orientate the new hydrogen sulfide sensor and place into the sensor pocket as shown in the image above. Note: The Analyzer is shipped with an H2S sensor already installed. Cell Cap (The H2S sensor is located behind the Cell Cap) SENSOR REPLACEMENT

Place the CELL CAP back on and secure it by turning clockwise. If having trouble sealing, see note below for sealing techniques.

Follow the calibration steps

Turn the 3-WAY SELECTOR VALVE back to the SAMPLE position.

Place the CELL CAP back on and secure it by turning clockwise.

To seal the sensor, hand tight is normally all that is required. If more torque is needed, first purge, then remove the sensor, clean the mating surfaces in the pocket and the o-ring on the sensor with Isopropyl alcohol and a clean lint-free cloth. Add new lubrication, DuPont Molykote 55 O-Ring Grease or equivalent, to the sealing surface of the o-ring and reinstall. Once installed, wait for the reading from the sensor to fully stabilize in span gas – which can take 10-45 minutes, depending on flow rates a

Source: TULS Dairy (Community Member)