Users Manual Part 2
Table Of Contents
- Contents
- 1 Preliminary note
- 2 Safety instructions
- 3 Intended use
- 4 Items supplied
- 5 Function
- 6 Mounting
- 7 Electrical connection
- 8 Parameter setting
- 9 Operation
- 10 Troubleshooting
- 10.1 Troubleshooting incorrect level readings
- 10.1.1 Level too high / too low
- 10.1.2 Measured value is stuck
- 10.1.3 Measured value drops when level close to antenna
- 10.1.4 Measured value fluctuates
- 10.1.5 Measured value is occasionally unstable
- 10.1.6 Lagging of measured value during rapid level changes
- 10.1.7 Measured value correct at 0% (4 mA) but incorrect at 100% (20 mA)
- 10.1.8 Incorrect measured value when level is above 50%
- 10.1.9 Measured value drops to zero close to tank bottom
- 10.1.10 Level measurement is lost in an empty tank
- 10.1.11 Alert mode when level close to tank bottom
- 10.1 Troubleshooting incorrect level readings
- 11 Maintenance, repair and disposal
- 12 Factory setting
- 13 Appendix
LW2720 Electronic level sensor
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11 Maintenance, repair and disposal
The unit can be unscrewed from the adapter for cleaning.
u Check the unit and the mounting adapter at regular intervals and tighten again, if necessary.
u Only use suitable tools with plastic wrench flats for wetted surfaces.
u Clean the antenna (PTFE capsule) at regular intervals with appropriate agents to avoid
contamination or formation of deposits in the long run.
u Ensure that the connection point between unit and adapter is not soiled or damaged during the
cleaning process. Check sealing ring(s) for damage.
If sealing rings are damaged:
u Replace damaged parts. Available accessories: www.ifm.com
It is not possible to repair the unit.
u In case of return shipment, ensure that the unit is free from soiling, especially from dangerous and
toxic substances.
u For transport only use appropriate packaging to avoid damage of the unit.
u After use dispose of the unit in an environmentally friendly way in accordance with the applicable
national regulations.