SOL-96.110.051 / 260422
TOPAZ Total Hardness
Maintenance
41
6.6.2
Standard Calibration
Note:
• On multi-channel instruments, only calibrate sample stream 1.
Procedure
The procedure is similar to the manual measurement procedure
.
Begin calibration by entering the reference value of the standard
used. Pay attention to the correct concentration unit (ppm by de
-
fault). Then follow the instructions on the screen.
Results
screen
At the end of the standard calibration, a window displays the previ
-
ous (actual) and the new (calculated) calibration coefficient and the
concentration measurement readings before and after calibration.
Confirm by pressing the button.
6.7. Longer Stop of Operation
If the instrument is going to be switched off for a few days or longer,
proceed as follows:
1
Prime the reagent system with deionized water as described in
Stop of Operation for Maintenance, p. 32
2
Clean the photometer thoroughly with diluted hydrochloric acid.
Note:
Do not use a bottle brush, as this could scratch the optics.
3
Remove algae and particles present in sample tubes.
4
Fill the sample tubes and the photometer with deionized water.
CALIBRATION RESULTS
Actual coefficient
Coef. Calculated
Measure before calib
Measure after calib
1.040
1.047
20.15
20.00