How does a moisture sensor work?

Answer

The moisture sensor works when the series of discs in the sensor expands they get wet, and to a certain size, they flip a micro switch, this interrupts the current going from the controller to the valves, whereby the controller will tell the valves to start watering in the middle of a rainstorm, if the valves do not get the memo then they don't turn on. When the discs dries out in the sun and the wind, then the switch flips back, and the valves will water when the controller tells them to start watering.
Q&A Related to "How does a moisture sensor work"
A moisture sensor works by estimating the amount of water in your soil based on the dielectric constant, or the soil's ability to transmit electricity. The dielectric constant increases
http://www.ehow.com/facts_7478971_do-moisture-sens...
1. Cut 1/2-inch rubber tubing slightly longer than 3 1/2 inches, using a utility knife. Make the cut as straight as possible. Cut the tubing lengthwise, to make it easier to remove
http://www.ehow.com/how_8703195_build-soil-moistur...
1. Unplug the GE Profile dryer power cord from the dryer outlet. Open the dryer door, and pull out the lint screen at the bottom of the door opening. 2. Remove the two screws securing
http://www.ehow.com/how_12185713_replace-moisture-...
1. Move the dryer away from the wall,and then unplug the power cord. 2. Remove the screws from the rear of the top panel. Remove the top panel. 3. Depress the tabs on the inside of
http://www.ehow.com/how_12187635_fix-moisture-sens...
Explore this Topic
Moisture sensors are portable, electronic devices, which can read moisture over any size area, and down to any root depth. They are predominantly used to measure ...
There are different types of moisture meters. However, the moisture meter will work in the same manner irrespective of the brand. It works by checking, moisture, ...
A moisture tester or meter is a hand device used to check the amount of moisture in wood. It injects an electric signal which is supplied by a battery into the ...
About -  Privacy -  AskEraser  -   -  Careers -  Ask Blog -  iPhone -  Android -  Help -  Feedback © 2013 Ask.com