Agriculture/Plant cultivation
ConfiguratorGeneral
Rain sensor
In principle, all rain sensors work according to the same principle: a container collects the water and when a certain amount is reached, a switch is triggered.
But not the RAIN-CLIK sensor from Hunter, where the impulse is triggered as soon as it starts to rain. This means OpenSprinker reacts much faster. Any ongoing watering will then be stopped immediately.
Connect rain sensor: Most rain sensors have two wires, easy to connect when rain is detected. Without rain, these are simply “open”, but some work the other way around and are “closed” without rain and open with the rain.
You simply have to connect these to GND and SN1 on the OpenSprinkler and the whole thing works. In the settings you should then have the rain sensor activated under “Weather and Sensors”.
P.S. From firmware version 2.1.9, the second sensor input is also activated and a rain sensor can then be connected there too.
Just bought a RAIN CLIK. Based upon the post I expected to require “Normally Open”. Mine is closed with no rain and open with rain. It’s as simple as removing the checkmark from “Normally Open” in OpenSprinkler to match the rain sensor’s operation.
Well, it's quite simple: it doesn't have to be at this moment! When the irrigation program starts again the next day, the rainfall from the previous day is taken into account. If it was enough, then there is no (or only little) irrigation.
But the moment the rain starts, you should turn off the irrigation.
Just to clarify: The rain sensor only has one function: it interrupts the running program. In the “rain delay” mode, it postpones all planned irrigations; in the “Zimmerman” and “evapotranspiration” mode, the previous day's value is used.
Hello,
I saw that Hunter has the Rain-Clik and the Mini-Clik. Do you have a recommendation as to which one is better for Germany?
Thank you very much!
Hello,
yes, of course you can also use the Mini-Clik. Due to its design, it reacts later to rain than the Rain-Clik.
It's probably cheaper to use the fixed rain click and adjust the inertia in the software? How then does the system know that it has rained “enough”?