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Thread: Water level sensor connections

  1. #1

    Default Water level sensor connections

    I got this water level sensor here in Spain for a well, and you would need a microscope to read the diagrams etc. So I was hoping that someone might be able to help. I have attached photos of the sensor. First of all: is it neccessary to have 3 depth sensors hanging in the water , or would max and minimum be sufficient. Also how do I make the connections? In my case it is 220 volts. In the photo (sensor_2) 220 volts connects to pole nš 10, but where do I connect the second 220 volt cable? I can see the earth connects in pole nš 7. I'd really appreciate any help. Thank you.
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  2. #2
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    The third probe is a ground. I'm thinking they want it in the water as well as the other two. The actual connection is made between the hi/lo probes and the ground probe.

    I don't read Spanish and sure don't know where they hid the other line in unless it is the 380 screw. That would be my best guess.

    bob...

  3. #3

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    due to the hopelessly inadequate instructions I have no idea how to make the connections - I know that *one* of the mains 220 v wires connects to pole 10. I wonder if the other goes to 4, which switches to 3 for on or off of the pump. But where the pump should be connected ...no idea. Maybe one pump wire to 10 and the other to 4?? Am I right to assume that the 3 probes are actually neccessary?

  4. #4

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    BTW the instructions in Spanish are not an issue for me, just the lack of clarity. About the second 220 Volt connection: I think it's probably supposed to be connected directly to the pump? And the other 220 Volt cable connects to pole 10 (as in the photo sensor_2.jpg). With the earth from the pump - if there is one - connecting to pole 7?
    That would seem to explain how the pump turns on and off, as in a normal on/off: one mains cable directly to the apparatus, and the other via a switch (in this case pole 10), but I'm still left with the problem of what poles the second pump cable is connected to - Pole 1? because it seems to have an on_off connectri ng to 3 and 4. Thanks

  5. #5
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    I'm sorry, there is just not enough info to make a wild guess.

    bob...

  6. #6
    Aspiring Old Fart, EE, computer & networking geek Mikey's Avatar
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    I think you need to call a plomero. The connection diagram looks normal. Apparently you can run the thing on either 220 or 380 (!?) VAC (pin 2/10 or 2/11), and a signal voltage is used (pins 5,6,7 to determine water level. The level determines when the power relay (pins 1,4,3) is closed. I haven't a clue what the dials and knobs might be for -- maybe a sensitivity adjustment? Is there a complete manual?
    Last edited by Mikey; 08-22-2006 at 06:24 AM.

  7. #7
    Rancher
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    Give them a call, I'm guessing the knob is a delay, and the pot is a sensitivity adjustment.

    Tel. 977 64 15 16 - Fax. 977 64 15 17 - Email : german@nivelgar.com

    Rancher

  8. #8

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    a complete manual? All I got was a small folded piece of paper with print and diagrams, compressed to a tiny size and impossible to make out. I did email the company but no reply yet. I am assuming that the connections should be as follows:
    1: One mains cable to pin 10, the other direct to pump
    2: the other pump cable to pin 1
    3: The 3 probes to pins, 5,6 and 7 as in the photo
    4 I assume pin 7 is also used for the pump earth wire, but I have no idea what pin 2 is for.

  9. #9
    Aspiring Old Fart, EE, computer & networking geek Mikey's Avatar
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    Here are my guesses:

    -220VAC Mains to pins 2 and 10 (this powers the device itself and the internal relay)

    -the 3 probes as you've guessed

    -One side of the 220VAC mains to pin 1, then either pin 3 or 4 (depending on how the device switches -- I'd first try 3) to one side of the pump motor, then the other side of the motor back to the other side of the 220VAC mains

    -Pin 7 and the motor ground to ground

    Caution: I'm guessing in English.
    Last edited by Mikey; 08-22-2006 at 11:13 AM.

  10. #10

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    so you would connect mains to pins 2 and 10 AND also one side of mains to pin 1? hmm... seems strange to connect the mains twice. But...?
    I may end up calling the manufacturer. There are bigger diagrams of different models (also confusing...to me...) on their website www.nivelgar.com but my particular model (CIN MV) is "page not found" .
    Thanks.

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