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Water Injection Level Sensor

Old 03-26-04, 01:17 PM
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Water Injection Level Sensor

i want to install a level sensor in the water tank. i would like an LED to light when the levels falls below 1/4 or so.

what is the least expensive, reliable way to to this?

justin
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Old 03-29-04, 05:58 PM
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If you found a car that had a windshield washer level detector in it stock you might be able to go to a junk yard and pull it from the same model. Just an idea if you are looking for something cheap.
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Old 03-29-04, 08:06 PM
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use the stock FD water level sensor, it grounds out when water is present
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Old 03-31-04, 02:14 PM
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Originally posted by 93BlackFD
use the stock FD water level sensor, it grounds out when water is present
Only if the water container is metal.
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Old 04-07-04, 10:34 AM
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damn, really?
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Old 04-07-04, 02:22 PM
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Yeah, the sensor works in the FD because the thermostat housing is metal and grounded. Since it's a single-wire sensor it needs the housing (and water) to act as a second electrode to complete the circuit.

You can still use the FD sensor with a non-metallic container if you add another electrode (or a second water sensor) to the container, but this is probably more trouble than it's worth, since there are off-the-shelf sensors that are made for this type of thing.

Last edited by patriick; 04-07-04 at 02:25 PM.
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