Hello,
I've currently implemented a liquid level sensor that should be located on a pipe. The level is read by FDC1004 IC following SNOA92 document. dimensions of the sensor are:
- Plastic Tape width: 25mm
- GND and LEVEL strips witdh: 3mm. Signals are connected respectivelly to ground and Ch1 (CIN1).
- RL and RE pads width: 3mm. Signals are connected respectivelly to Ch2 (CIN2) and Ch3 (CIN3).
- SHIELD strips width: 6mm. Signal is connected to SHLD1.
Channel Ch4 (CIN4) is left floating. Sensor length is 10 meters. signals are located on a face of the tape, whereas SHIELDS are located on the opposite face covering the signals.
Issue:
When I get the MEAS values (MEAS1 = Ch1-Ch4, MEAS2 = Ch2-Ch4, MEAS3 = Ch3-Ch4) I always obtain 0xFFFFFF00.
Questions:
- What are the best dimensions and clearance I should respect in order to deploy the pastic tape (i. e.: the base of my Sensor). In other hands are the chosen dimension suitable for the application?
- Is possible to use a sensor length of 10 meters?
- If NO, how can I get the maximum operating lenght?
- There are some improvements I should take into account in the software (gain, offset, and so on)?
- if YES, how can I proceed?
Many Thanks for your collaboration.
