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Thread: Connect analogue and digital sensors to Idratek

  1. #1
    Automated Home Jr Member
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    Default Connect analogue and digital sensors to Idratek

    Hi, Since this is my first post in this forum I like to introduce myself briefly. My name is Glenn and my wife and I are building a hotel on an Island in northern Greece where we are installing the Idratek system. The hotel is fairly small (9 rooms) with a large garden and pool area. So far I have only been doing lights and the ordinary sensors (light, temp, humidity etc), but we have a need for external sensors as well and I am interested to see if any of you have had experience with this and if you can give me advice on external sensors that suit the Idratek system.

    Examples of sensors we are looking for:

    Temperature sensors for watertank and pool
    Water level sensors for watertank
    Water flow sensors for water consumption
    Moisture sensors for irrigation
    Solenoid water valves for irrigation
    Ultrasonic distance meter.

    We have also been looking at collecting weather data, but it seems it would be easier to buy a weather station which can be connected to a computer and make the integration directly through APIs. Is there anyone who has tried this out?


    Kind Regards
    Glenn

  2. #2
    Automated Home Legend chris_j_hunter's Avatar
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    we use these, clipped onto pipes :

    http://www.rapidonline.com/Electroni...-sensors-76422

    these, inserted into pockets & tile-adhesive, or taped to ducts :

    http://www.rapidonline.com/Electroni...th-Lead-122892

    and these, for room comfort sensing :

    http://www.titanproducts.com/categor...AC_RS_BB_109=&

    all wired into QAIs ...

    and these :

    http://www.hunterindustries.com/irri...sors/mini-clik

    http://www.rapidonline.com/Electroni...rtical-61-1315

    http://www.hydralectric.com/hdl/cate...olenoid+Valves

    several of all the above working for a while, without problem ...

    also one of these :

    http://www.titanproducts.com/categor...e_relays_.html

    also noticed these :

    http://www.wisewatersolutions.co.uk/...alve?related=1

    for flow-rate (need to be careful on pulses per litre & temperature) Paul found something better than we, so ... over to him !

    HTH

    Chris
    Last edited by chris_j_hunter; 13th January 2014 at 07:13 PM.

  3. #3
    Moderator toscal's Avatar
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    How humid is it where you are in Greece. The reason is that the mini-clik rain sensor can get fooled into thinking its raining when you have high humidity levels.
    This may be a better alternative..
    Had a few clients complain that their grass is not getting watered when the humidity level high. (we didn't install the systems)
    IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.
    www.casatech.eu Renovation Spain Blog

  4. #4
    Automated Home Legend chris_j_hunter's Avatar
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    that’s an interesting one - seems a bit hit & miss on accuracy, though ...

    http://www.rainsensors.com/tipping_bucket.php

    which might suit it less well for us (our rain varies between mist & stair-rods, between 1mm & 100 mm per day, and we need to keep track of it) ...

    OTOH, a bit of added local calibration (in Cortex) might just fix it, so it’s tempting to give it a go ...

    current plan is / was for a container with a drop-breaking mesh lid & a hand-full of float-switches set at various heights, with a solenoid for emptying from time to time ...

    NB: their fakeTV looks, um ... !

  5. #5
    Automated Home Jr Member
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    It is not that humid, but the Hydreon Optical Rain Sensor nevertheless seems interesting since it seems to have a reliable construction.

  6. #6
    Automated Home Jr Member
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    Thanks for the suggestions everyone,
    I have ordered some of the stuff from Rapid (great site by the way and very convenient for export sales. They had the current transformers I've been looking for to measure power consumption etc.). I have also contacted HDL to see what they might come up with. Regarding the Hydreon Optical Rain Sensor, the shipping costs seems quite high (allmost as much as the product itself). I´ve been looking at a weather station like Oregon WMR300 or something similar, but it might be difficult/time consuming to set up the communication between it and Cortex.


    Regarding rainsensors and grass not getting watered. I did not intend to have the irrigation be controlled by the rain sensors, but rather by the moisture sensors which at least in theory should give a better indication of when water is needed. Is there any reason why I shouldn´t use moisture sensors for this?

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