
A-96.250.671 / 070222
AMI Silica
Maintenance
52
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.
Relay status during verification:
Signal outputs are on hold
All limits are switched off
Set reference
value
Prior to performing the verification the reference value, e.g. 0.235,
needs to be set in menu <Installation>/<Sensors>/
<Ref. Verification> 5.1.2*) Verification reference value.
Verification
procedure
Basically follow the dialog in menu <Maintenance>/<Service>/
<Verification> 3.2.1*)
Note:
Start any time, if a measuring cycle is in progress wait for
next prompt.
1
Stop sample flow by closing the flow 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
Adjust for minimal absorbance (see AMI display).
4
Press [Enter] to save the verification measurement. The verifica
-
tion 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 Verification History
<Diagnostics>/<Sensors>/<FOME Sensor>/<Ver. History> 2.2.1.5*