VEGA VEGASWING 66 - Relay With SIL qualification - Manual (Page 24)

24
6 Setup
VEGASWING 66 • - Relay
44950-EN-130805
This test is valid if you cannot change the vessel filling or cannot
dismount the sensor.
Test without filling or dismounting the sensor
1. Separate the instrument briefly (>2 s) from voltage supply.
After switching on again, the instrument must take on the same
switching status.
If this is not the case, then there is a fault in the measuring sys-
tem.
Make sure the connected downstream devices are activated dur-
ing the function test.
2. Set the mode switch (min./max.)
Check if the switching status changes (signal lamp - switching
status). By doing so, you can check the function of the measuring
system.
If this is not the case, then there is a fault in the measuring sys-
tem.
Make sure the connected downstream devices are activated dur-
ing the function test.
You can find the coverage of the test in the Safety Manual.
You can dismount the sensor for test purposes and check its function
by immersing the vibrating element in the original medium.
Procedure
1. Separate the instrument briefly (>2 s) from voltage supply.
After switching on again, the instrument must take on the same
switching status.
If this is not the case, then there is a fault in the measuring sys-
tem.
Take note that the connected instruments are activated during the
function test.
2. Push the mode adjustment (min./max.)
Check if the switching condition changes (signal lamp - switching
condition). By doing so, you can check the correct function of the
measuring system.
If this is not the case, then there is a fault in the measuring sys-
tem.
Take note that the connected instruments are activated during the
function test.
3. Dismount the instrument and immerse the vibrating element up to
the switching point in the original medium.
Check if the switching condition changes (signal lamp - switching
condition). By doing so, you can check the correct function of the
measuring system.
If this is not the case, then there is a fault in the measuring sys-
tem.
1 Short interruption of the
supply line to the sensor
2 Dismounting of the sen-
sor and immersion in the
original medium