Functional Safety Manual
for the Memosens transmitter Liquiline M CM42 SIL
Version:
Page:
2.0
61
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7
Repair
In general Liquiline M CM42 SIL devices can be repaired like non SIL devices. But
there are two things to take into account:
1. If only one of the Liquiline M CM42 modules is replaced, the complete system is
NOT in an "almost new" state. Therefore you have to do a proof test of all not changed
components and compute the current PFD
avg
value for your specific system. To avoid
this effort, a service
kit containing both hardware modules
(FMIH1, SIL and
FSDG1, SIL) is offered,
order code 71123799
. These modules are not available
separately.
Regarding PFD
avg
, the exchange of both modules is comparable with a new device.
2. In case the
voter detected an
du
error
(error displayed by PCS, but Liquiline M
CM42 status seems to be ok)
please send the device back to E+H
. It is the
responsibility of all of us to do everything possible to find out the reason which lead to
this safety relevant
du
error.
Please fill in the form “Declaration of de-contamination” on
www.endress.com/service
- support - returned material or copy the last but one side of this manual and send it
together with the clean device back to your local E+H service.
Are you interested in a training esecially regarding the SIL Memosens pH analytical
measuring chain? Please send your request to
.
The following scheme gives an overview of what to do in case the SIL measurement is
interrupted:
