Water Monitoring System
User Manual
Page
54
of 82
Ver. 1.1 – Revision March 2022
7.4.3 Before Validation/Calibration
PAH Sensor Check
1. Set the operation sliders to “Local” and “Stopped”. Close the “Outlet”
and “Inlet” valves.
2. Open the “Drain” valve.
3. Find a clean cloth, water for flushing and calibration chamber, syringe,
needle, and relevant PAH standards from the calibration kit.
4. Remove the locking plate and remove the PAH Sensor from its
measuring chamber.
5. Ensure the optical windows are clean. This is vital, so please use a cloth
free from oil when cleaning the optical windows.
NOTICE
It is vital to wipe the sensor dry prior to and between any validation &
calibration attempt. Take care to wipe dry all crevasses and bolts while
taking care not to touch and distribute the silicon grease on the O-rings.
Validation/calibration liquid selection
Calibration liquid µg/l
Validation
liquid µg/l
Low range
calibration
High range
calibration
Low range
High
range
Module type
Low
calibration
High
calibration
Low
calibration
Middle
calibration
High
calibration
G6111
Low
Range
0
100
-
-
-
50
-
G6111
High
Range
-
-
0
400
800
-
400
G6111
Dual
Range
0
100
-
400
800
50
200
Table 7.1: Validation/calibration liquid selection
