1
$\begingroup$

I need to buy a level switch for a quench tower water drainage system. I intend to use its output directly to open a solenoid valve to drain the tank when the switch detects water and close it afterward when the water recedes. I have identified make and model of a level switch I think is good. But the manufacturer provides multiple types of electrical outputs. It would be great if someone could advise on which of the following type is best for a simple level switch - solenoid valve circuit.

  1. Relay
  2. NAMUR
  3. Transistor
  4. 2-wire

P.S: I am a newbie regarding electrical stuff. I'll consult a friend who will help me to design the circuit, but I just need to place the order for the level switch.

$\endgroup$
3
  • 1
    $\begingroup$ Welcome to Engineering.SE . Could you add a link to the family of the sensors that you like? Could you tell us what you're going to connect the sensor to? $\endgroup$ Feb 20 '19 at 5:43
  • $\begingroup$ Can you share the make and model of the Level Switch? Can you share the specification of the Solenoid Valve? $\endgroup$ Feb 21 '19 at 1:55
  • $\begingroup$ What are the current and voltage requirements to "directly to open a solenoid valve"? If these matched those of the "relay" option you might be able to not use a relay itself, but chances are pretty high that you will just have to use a relay or transistor in the middle and go with the appropriate output option. $\endgroup$
    – Abel
    Apr 5 at 2:06
0
$\begingroup$

How about using a latching solenoid valve like the following?

enter image description here

1/2" Magnetically Latching Solenoid Valve DC 6 V

Use a h-bridge driver to switch on and off the valve. Below is one that I have used most recently.

DRV8833 Dual Motor Driver Carrier \ enter image description here

HTH

$\endgroup$
1
  • 1
    $\begingroup$ The only reason to add the additional complexity would be to conserve energy but this does not seem to be an issue for the OP. $\endgroup$
    – Transistor
    Aug 13 '19 at 20:53

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.