Potable water tank Transmitter

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4 days 23 hours ago - 4 days 23 hours ago #1470 by dynamics
Is there any way to test installed water tank quantity transmitter Reed switches and diods and relevant wiring by multimeter?
Last edit: 4 days 23 hours ago by dynamics.

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4 days 10 hours ago #1471 by Mark
Replied by Mark on topic Potable water tank Transmitter
Can you post a print?

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4 days 5 hours ago #1472 by dynamics
I just have sent an email enclosed with the connected diagram.

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3 days 22 hours ago - 3 days 16 hours ago #1473 by Mark
Replied by Mark on topic Potable water tank Transmitter
  
 

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There are several switches for each level. One for full. Three for 3/4. Three for 1/2. Three for 1/4.

The bulbs have power on one side. They're looking for a ground through the transmitter to turn on. The end path for that ground is provided by the "Push" switch at the indicator.

It looks as if the "Empty" light will come on no matter the quantity of the tank.

If your tank is full, you can use the "Diode" function of a VOM (properly biased) to check your switches.

Pin "1' for the red lead. Pins 4, 3, 5, and 2 for the black lead. Of the lights with three switches.... each one cannot be checked individually, but you'll know of at least one that is working if your meter shows a voltage drop (usually .5 VDC).
  
 
Last edit: 3 days 16 hours ago by Mark.
The following user(s) said Thank You: dynamics

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