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4 Inspect and service new sensor
module’s o-rings.
Ensure that the two o-rings are not nicked or torn and have
no contaminants or particles on them. If the user detects
damage, carefully replace them with the extras included in
the sensor module kit. en apply a thin coat of Krytox®
lubricant to each o-ring. If a user removes a sensor module
that is in good working order, replace the o-rings before
use.
5 Insert new sensor module.
Align the prongs on the base of the head with the slots in
the sensor body. e sensor module is keyed to insert in
only one orientation. Once the module is aligned, press it
rmly into position until it clicks. Wipe away any excess
grease from the assembled components.
6 Apply new sticker.
Wrap the junction of the sensor module and the body with
the new sticker included in the sensor module kit. is
sticker helps keep the sensor module junction clean and
retains the rubber plug throughout deployment.
7 Re-calibrate the sensor.
Calibrate the pH or pH/ORP sensor following each sensor
module replacement. Aer calibration, the sensor is ready
for eld use.
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