Thermo Scientific AquaSensors
™
AnalogPlus
™
Differential pH Sensor User Guide
12
3.2.
Important Points to Remember During Installation
To insure accurate measurements when installing a new pH sensor it is important to remember a few simple
steps to avoid damage and to keep the pH measurement reliable.
Save the protective cap and use it to
keep electrodes moist whenever the
sensor is removed from service.
When taking a sensor out of storage,
soak the sensor in a pH 7 buffer
solution for 30 minutes before
calibration.
DO NOT USE PIPE SEALANT.
Pipe sealants may not provide
adequate sealing or may react with
different plastic materials. Use
Teflon thread tape.
DO NOT OVER TIGHTEN!
Maximum torque: 65 lbs
⋅
in (7 N
⋅
m)
The sensor should be positioned at
least 15
°
up from horizontal. This
will insure that entrained air does not
form a pocket around the sensor
head.
If the sensor does not calibrate, refer
to Section 4 to review maintenance,
refurbishment and troubleshooting
options.
