I have a solenoid valve just like this http://www.globalspec.com/ImageRepository/ProductAreaImages/2007/4/903/large.jpg and its rated 120 VAC/26VA (3 prongs, one for ground) . I also have a horizontal level switch for liquid like this http://germes-online.com/direct/dbimage/50279527/Level_Switch.jpg with rating 120 VAC/0.28 A (the switch will connect when the water level reach the target) normally open.
How can I wire them so that when the level reached the valve will close and water will not flow into the tank? The switch is inside the tank and the valve connecting the pipe for feed water. Thanks
2007-06-26 10:08:10 · 4 answers · asked by coza b 2 in Science & Mathematics ➔ Engineering
If the valve opens when power is applied, the connection is easy. Connect one wire from the switch to the black (hot) wire of a 120 VAC power cord. Connect the other switch wire to one non-ground prong of the solenoid. Connect the white (neutral) power cord wire to the other non-ground prong of the solenoid. Connect the green (ground) wire of the power cord to the ground prong of the solenoid.
If the valve closes when power is applied, get a float switch that disconnects when the water level reaches the target.
If you can't change the switch, you need a 120 VAC relay. Wire the relay as described in paragraph 1. The relay needs to have a contact that opens when power is applied. Wire that contact to the solenoid in the manner described in paragraph 1.
2007-06-26 10:41:31 · answer #1 · answered by EE68PE 6 · 5⤊ 0⤋
There are ultrasounds sensors who're terrific suited for this form of pastime. you need to apply then a digital swap to relay to regulate the valve. No microprocessor mandatory. If certainly you activity is to apply this form of administration then i recommend you get a extra cost-effective answer. Use a type of touch like those from a mouse and connect it to a skinny rod with some thing which will flow on the conclusion. so as that once the water reaches a undeniable point the the rod will circulate in this variety of vogue that it presses the touch. All you're able to do then is connect that touch to between the pins from the micro controller for enter. From yet another pin for output set a connection to a valve. this technique for the micro controller could be extremely undemanding. wish it facilitates.
2016-10-19 00:05:47 · answer #2 · answered by ja 4 · 0⤊ 0⤋
Since your valve and switch is inside the tank, why don't you just use a float-activated valve and get rid of the electrical end entirely? Why do you think they use float-valves in toilets? Because they do not consume any electricity and they are simple devices. Since you're not controlling a pump, why not just keep it simple?
2007-06-29 20:46:41 · answer #3 · answered by Kevin S 7 · 0⤊ 0⤋
When selecting your solenoid valve and level switch you should consider "normally-open" or "normally closed".
2007-06-27 15:07:02 · answer #4 · answered by redscott77092 4 · 0⤊ 0⤋