AMI INSPECTOR Conductivity
Maintenance
A-96.250.611 / 120617
31
6.4.2
Pre-test
Reference instrument: AMI INSPECTOR Conductivity
– Check certificate; reference instrument certificate not older
than one year.
– Check battery; Battery of the AMI INSPECTOR
Conductivity should be completely charged. Remaining
operating time on display minimum 20 hours.
– Disable temperature compensation (set to “none”)
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 occurring alarms (as for example
flow alarms). If alarms occur frequently remove cause
before starting the procedure.
6.4.3
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
NOTICE:
• 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.
