Firmware History; Maintenance - Endress+Hauser OTR31 Operating Instructions Manual

Maintenance

Code Description
W270 Short-circuit and overload at output 1
W280 Short-circuit and overload at output 2
7.2

Firmware history

7.2.1 Release
The release number on the nameplate and in the Operating Instructions indicates the device
release: XX.YY.ZZ (example 01.02.01).
XX • Change to main version
• No longer compatible
• The device and Operating Instructions change
YY • Change to functionality and operation
• Compatible
• No changes to the Operating Instructions
ZZ • Fixes and internal changes
• No changes to the Operating Instructions
7.2.2 Software history
Date Software version
09.2018 01.02
04.2014 01.02
02.2006 01.02
8 Maintenance
Buildup on the sensor negatively affects measurement accuracy
‣
Check the sensor for buildup at regular intervals.
CAUTION
L
Damage to the device.
‣
Ensure that the process is unpressurized before you remove the device.
‣
Do not twist the device out of the process connection thread at the housing.
‣
Always use a suitable open-ended wrench to remove the device→  38.
26
Remedial action
Check output wiring
Increase the load resistance at switch output 1
Check output wiring
Increase the load resistance at switch output 2
Software Documentation
modifications
- BA00229O/09/EN/
14.18
- BA00229O/09/EN/
13.14
- BA229O/09/EN/
06.09
Temperature switch OTR31, OTR35
Material number
71415688
71252257
71098141