Water Monitoring System
Ver.5.0 – Revision March 2022
Page
37
of
110
6.1
Validation/Calibration of the pH Module
Figure 6-1: pH Validation/Calibration Procedure
Note
Validation procedure uses pH buffer 7.
Calibration procedure use pH buffer 4, 7 & 10.
1.
Place a cup under the calibration fluid drain off to collect the discharge.
2.
VALVE 2
is in
STOP
position. Then set
VALVE 1
to
DRAIN
position.
3.
Loosen the union nut by hand and park the sensor in the clamp.
4.
Clean
the electrode and clean the measuring chamber using a cleaning pad. If a cleaning
pad is not available, use a clean, soft cloth.
5.
Validation procedure:
open a bag with the
pH 7 buffer
.
M
ake sure that the sensor and
the pH buffer liquid have the same temperature, and then place the sensor in the pH
