Chematest 30
Maintenance
A-96.730.101 / 151118
19
7.
Maintenance
7.1. Verification
The verification kit contains two reference cuvettes (labeled “Low”
and “High”) with certified reference absorptions, which simulate ap
-
proximately 1 ppm and 4.5 ppm of free chlorine, and an additional
cuvette for zero point determination. The exact values are specified
in the enclosed calibration certificate.
Reference
values
Prior to performing the first verification and after each recertifica
-
tion, the reference values for the cuvettes “Low” and “High” need to
be set in menu <Settings>\<Sensors>\<Photometer>. The refer
-
ence values are specified in the enclosed calibration certificate.
Verification
procedure
Before each use, check the expiration date on the calibration certif
-
icate. If the expiration date has passed, send the verification kit to
Swan for recertification.
To start a verification, navigate to <Menu>/<Maintenance>/
<Verification>/<Photometer>. Select cuvette “Low” and follow the
instructions on the screen. Repeat the same procedure with the cu
-
vette “High”.
Verification
history
Can be reviewed in <Menu>/<Data Storage>/<Ver. History>.
Up to 32 verifications are memorized. Then the oldest verification is
deleted to save the newest one (circular buffer).
A
B
C
Zero
Low absorption
High absorption
B
A
C
