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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3 Intended use
The unit continuously monitors the level of liquids in tanks without contact. Bulk materials are detected
depending on their properties (conical heaps, grain size, dielectric constant, etc.).
3.1 Application area
Non-contacting radar technology is ideally suited for food and beverage applications as it is
maintenance-free, has a top-down installation that reduces the risk of leakages, and is unaffected by
process conditions such as density, viscosity, temperature, pressure and pH.
The unit combines the innovative 80 GHz technology with the FMCW method and smart algorithms to
maximise measurement accuracy and reliability, even in small tanks and challenging fast-filling/ fast-
emptying vessels.
3.1.1 Application examples
Storage tank:
Provides insight into the tank and ensures production runs smoothly
without interruption.
Mixing tank:
Ensures correct filling and storage levels in tanks with agitators.
Batch filling:
Optimises the batch filling process.