How to put a rain sensor< Volver
What should we do so that the irrigation controller automatically stops water every time it rains?

HOW TO PUT A rain sensor.

What should we do so that the irrigation controller automatically stops water every time it rains?
Although it seems that it does not rain much in Catalonia, there are approximately more than 30 days of rain than the needs of a common lawn. This means that irrigation is unnecessary in this case. Even taking into account that part of the day will not be as straight-saving, saving in a garden of 1000m2 is of the order of 70m3 per year. Happened to the new rates (2013) implies an annual reduction of about € 420.00. Savings far greater than the cost of the installation.
Here we show you how to install this same sensor. First of all, we warn that the installation of these sensors is easy and cheap.



Here you can see an image of a typical two-wire sensor. If you find one of three look good because there are only two that work. Will find those marked as NC (Normally closed). There are also cup, but the installation is exactly the same.
The sensor acts as a switch. When dry, the sensor allows the passage of electricity. When wet or dock, it opens the circuit allowing the passage of electricity.
First of all need to know what kind of programmer have. Nor, depending on the sensor type two. Those who are ready to take sensor. See Figure 1. Are marked with a yellow arrow will put the two terminals on the terminals of the sensor.



So in this case, is as simple as joining the two sensor wires with terminals RAIN SENSOR. In many cases labeled as S (sensor). You can see that when there are two sensor terminals should be pontejats.
For programmers who do not have these terminals, the installation is also simple. Will act directly on the common thread, marked with blue.



In this case will make the cable (usually black) that are attached to the terminal C (common) and join it to either the sensor wires (does not matter, eg black). Then the sensor cable will join the remainder (in this case red) to terminal C (common). You can see the picture of before and after. That is, the sensor was placed as a common switch. Thus, none of the jump solenoid when the sensor is wet.

We hope you have been helpful.
And good water saving ... and money!

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