If necessary, soak the sensor in clean water for at least 30 minutes to make the contamination
softer and easier to remove.
Note: Do not use dishwashing liquid to clean the sensor. Dishwashing liquid and household cleaners with skin
moisturizer can put a film on the sensor.
2. Rinse the sensor with clean water.
3. If the substance cannot be removed, contact technical support.
14.4.2 Replace the electrolytes and PTFE junction
Replace the electrolytes and PTFE junction if the:
• pH readings are unstable or slow.
• A drift is seen in the pH readings.
• pH sensor will not calibrate.
Refer to the documentation supplied with the maintenance kit (014660HY) for the reference sensor.
Clean the sensor before maintenance.
14.5 Replacement parts
W A R N I N G
Personal injury hazard. Use of non-approved parts may cause personal injury, damage to the
instrument or equipment malfunction. The replacement parts in this section are approved by the
manufacturer.
Note: Product and Article numbers may vary for some selling regions. Contact the appropriate distributor or refer to
the company website for contact information.
Replacement parts
Description Item no.
O-ring, reference sensor base 000704
Maintenance kit, reference sensor
Includes the O-ring for PTFE junction (red) and the items that follow
014660HY
pH reference electrolyte, 100 mL 005308HY
Potassium chloride pellets, 20 pellets 005376HY
PTFE junction, standard 000548HY
Section 15 Rhodamine WT sensors (007285, 007204, 9060800)
15.1 Specifications
Specifications are subject to change without notice.
Specification Details
Range 0 to 1000 ppb
Linearity R
2
= 0.999
MDL ppb 0.04
MDL RFU 0.0003
Parameters ppb, volts, RFU
10
10
RFU is also the raw voltage measurement.
36 English
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