50
A-96.250.631 / 280219
AMI Codes-II TC
Maintenance
6.4.
Verification
The “Verification kit for AMI Photometer” is available as
an accessory. An optical window with a precisely deter-
mined absorbance value is placed into the light beam
of the photometer. The actual measured absorbance
will be compared to the reference value labeled on
each kit.
Set reference
value:
Prior to performing the verification the DPD reference value, e.g.
0.255, needs to be set in menu 5.1.4
<Installation>\<Sensors>\<Ref. Verification>.
Verification
procedure:
Basically follow the dialog in menu 3.2.1
<Maintenance>\<Service>\<Verification>.
NOTICE:
Start any time, if a measuring cycle is in progress wait
for next prompt.
1
Stop sample flow by closing regulating valve. Wait for next
prompt: Constant head will be drained and an automatic zero
will be defined.
2
Open cuvette of the photometer and insert the verification filter.
<Enter> to continue.
3
Align the triangle shape either to the front or backside and ad-
just for minimal absorbance (see AMI Display).
4
Press <Enter> to save the verification measurement. The verifi-
cation is successful if the difference is within the limits. <Enter>
to continue.
5
Remove filter, close cuvette and open regulating valve. <Enter>
to finish and <Exit> to the main display.
Verification
history:
Can be reviewed in menu 2.2.1.5
<Diagnostics>\<Sensors>\<Photometer>\<Ver. History>
