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8
Calibration/Validation
8.0 Calibration/Validation
Your Pooltest 25 is delivered with a calibration
certificate validating the performance of the
instrument as it leaves Palintest.
We recommend annual service and calibration
of all photometric instruments in normal use.
The Pooltest 25 also includes an automatic
routine to validate analytical performance using
certified Palintest Check Standards. Accessed via the
Mode menu, the Check Standard Mode provides
a field method of ensuring your instrument is
operating within defined specifications and also a
troubleshooting method for unexpected results.
Every Palintest Check Standards set is
supplied with certified values expressed as %T
(Transmission), derived from traceable reference
materials. Acceptable tolerances are defined on
the certificate and are automatically specified
within the Pooltest 25.
8.1 Check Standard Mode
Access Check Standard Mode from the Mode screen.
Highlight Check Standard Mode and press OK.
Two choices are offered:
Enter Check
Standard Values
Check Standard
Measurement
22
use the up/down keys to
adjust the displayed values
to match the certificate
insert the Check Standards
in the defined order to
generate a validation report
8.2 Enter Check Standard Values
Each standard has two values assigned, for two
individual wavelengths.
Use the up/down keys to adjust the values to match
the certificate, following the order defined on the
display. Press OK when the correct value is shown
and the prompt will forward to the next value.
Upon completion the message Check Standard
Values assigned successfully will be displayed.
Press OK to return to the Check Standard Mode menu.
8.3 Check Standard Measurement
Follow the on-screen prompts to insert the Check
Standards in the defined order. The Pooltest
25 will automatically measure the Transmittance
at the required wavelength.
Upon completion of the sequence the results
are displayed on screen with pass or fail status.
If the Check Standard Mode reports a failure,
see Appendix 2 Troubleshooting for guidance
or contact your local Palintest supplier.
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