Water Level Sensors: Strange Behavior?

In summary, the sensor seems to fail after a few days of not being used, and after being left alone the sensor starts working again. The data sheet is not clear where or how the 'switching distance' is measured, 0.5mm from where? Could that be part of the problem?
  • #1
Kaly
8
0
HI All,

Has anyone experienced strange behavior with capacitive level sensor? They fail (not detecting fluid) at certain point and after leaving them alone for couple of days start working?
 
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  • #2
Kaly said:
HI All,

Has anyone experienced strange behavior with capacitive level sensor? They fail (not detecting fluid) at certain point and after leaving them alone for couple of days start working?
Can you provide a lot more details? Part numbers, datasheets, diagrams of the setups, schematics of the associated electronics, etc.? Thanks.
 
  • #3
Yes. please see attached image for specs for the sensor I am talking about.
 

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  • #4
Kaly said:
They fail (not detecting fluid) at certain point and after leaving them alone for couple of days start working?
If "leaving them alone for a few days" means they are left dry, then they are probably leaking. Possibly due to mechanical strain, over-tightening, or manufacturing defect. Or maybe it is surface contamination.

The data sheet is not clear where or how the 'switching distance' is measured, 0.5mm from where? Could that be part of the problem?
 
  • #5
These sensors are being used for water level sensing, yes?
What appears to be an identical sensor found in a Google image search is titled a "Tintensensor" (ink sensor).

Is this clean, potable water? Is the probe end in direct contact with the water? What is the sensing application?
Tom.G said:
The data sheet is not clear where or how the 'switching distance' is measured, 0.5mm from where? Could that be part of the problem?
I'm thinking the question @Tom.G posed will be the key to explaining odd sensor behavior.

While attempting to find additional information on the MKM-M8-001-STD sensor shown in the spec sheet, learned that the www.sensorwelt.de site is no longer active, and the company appears to be in financial trouble. It may be time to begin looking for a replacement from a different manufacturer.
 
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Likes Tom.G

1. What are water level sensors and how do they work?

Water level sensors are devices used to measure the level of water in a tank, reservoir, or other container. They work by using a float or pressure sensor that detects changes in the water level and sends a signal to a display or control system.

2. Why is my water level sensor giving strange readings?

There could be several reasons for strange behavior in water level sensors. It could be due to a faulty sensor, improper installation, or environmental factors such as temperature changes or debris blocking the sensor. Regular maintenance and calibration can help prevent strange readings.

3. How can I fix strange behavior in my water level sensor?

The first step is to check for any obvious issues such as loose connections or debris blocking the sensor. If that does not solve the problem, the sensor may need to be replaced or recalibrated. It is also important to follow the manufacturer's instructions for installation and maintenance.

4. Can water level sensors be used for other liquids besides water?

Yes, water level sensors can be used for a variety of liquids, including oil, chemicals, and wastewater. However, different types of sensors may be needed for different liquids, so it is important to consult with the manufacturer for compatibility.

5. Are there different types of water level sensors available?

Yes, there are several types of water level sensors, including float sensors, ultrasonic sensors, pressure sensors, and optical sensors. Each type has its own advantages and may be more suitable for specific applications. It is important to choose the right type of sensor for your specific needs.

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