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AMI Powercon
Maintenance
6.8.2 Pre-test
Reference instrument: AMI INSPECTOR Conductivity:
– Check certificate; reference instrument certificate not older
then one year.
– Check battery; Battery of the AMI INSPECTOR
Conductivity should be completely charged. Remaining
operating time on display minimum 20 hours.
– Make sure, that both instruments are set to the same
temperature compensation.
– Sensor is in working condition
– the cell constant [ZK] and the temperature correction [DT]
written on the sensor is set in menu 5.1.2.1
On-line instrument: Monitor AMI Powercon:
– Good order and condition; Flow cell free of particles,
Sensor surface free of deposits.
– Check message list; Review the message list in menu 1.3
and check for frequently alarms (as for example flow
alarms). If alarms occur frequently remove cause before
starting the procedure.
6.8.3 Connecting sample lines
See corresponding chapter in the manual of the process monitor
which shall be checked with a reference instrument.
The choice of sampling depends strongly on local conditions on
site. Possible sampling:
via sample point,
via T-fitting or
via piggyback/downstream
Note:
• avoid ingress of air, use screwed fitting,
• sample as near as possible to the process monitor,
• wait approx. 10 minutes, whilst measurement is running, until
measurement value and temperature are stabilized.
Example As an example following picture shows the connection of the refer-
ence instrument via T-fitting to the process monitor.
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