Endress+Hauser Cerabar S Series - Changing the Sensor Module and Electronics

8.3 Changing the sensor module and electronics
Warning!
The sensor module and electronics should only be replaced by E+H Service when using
the instrument in EEx d and EEx ia areas.
The Cerabar S must be sent back to E+H Service as a complete unit.
Caution!
The electronic module is an electronic component. Electrostatic discharge can affect the
operation of the instrument or cause damage to its electronic components. Contact
should be made with a grounded object before handling the electronic module. Switch
off power supply.
Changing the electronics
Removal
•
Open the cover to the display compartment
•
Remove the display
•
Undo the two screws on the holding ring and remove
•
Remove the plug from the electronic module
•
Remove the electronic module
Mounting
•
Insert the electronic module
•
Mount the holding ring
•
Insert the plug, noting size and coding
•
Attach display of cover and screw down the cover to the display compartment
Changing the sensor
module
Removal
•
Remove the complete electronics and electronic box from the housing (see above).
•
Position the bracket and smooth face on the sensor module parallel to each other.
Remove the stud, undo the screw and lift out the bracket. When unscrewing the
sensor module, carefully rotate the cable with it.
Mounting
•
Insert the cable with plug into the display compartment.
•
Screw in the sensor module right to the stop, taking care to turn the cable with it.
•
To ensure that the Cerabar S can be fully turned when mounted, turn the unit in the
other direction by one complete turn.
•
Position the bracket and smooth face parallel to the sensor module.
•
Secure the bracket with the stud and screw.
•
Mount the electronics and electronic box and insert the plug, noting size and coding.
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0-10BARABS
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Switch off
power supply
Holding ring
Electronic module
Caution!
Electronic component
Sensor module
Electronics box
BA211Y55
Bracket
Stud
Captive screw
connected with
stud and nut
Caution!
Cerabar S 8 Maintenance and Repair
Endress+Hauser 51