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Thread: Data logger

  1. #1
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    Data logger



    Hi everybody!
    I am looking for a data logger. I am going to use
    5 different temp./humidity sensors,
    3 current sensors,
    1 CO2 sensor,
    2 differential pressure sensors and
    I am going to control status of some equipment (6 Digital inputs).
    It should be like a local storage for outdoor usage.

    I am going to use the following sensors (or equivalent):
    Analog inputs:
    Vaisala HMW110 – 2 items 4…20 mA-output/20…28 VDC – operating (temperature/humidity)
    VERIS H921 – 3 items 4…20mA-output/12…30VDC (current)
    SIEMENS QFM21 – 3 items 0…10VDC or 4…20mA-output/13.5…35VDC or 24VAC (temperature/humidity)
    Johnson Controls CD-PR0-00-0 – 1 item 0…10VDC or 4…20mA-output/20…35VAC or 18…30VDC (CO2)
    SIEMENS QBM3100 – 2 items 4…20mA /8…30VDC (pressure difference)
    Johnson Controls TE-6300 Series – 3 items 4…20mA (temperature)

    Also I need to control the status of the following equipment:
    Digital inputs
    Air dumpers – 3 items
    2-way valve – 3 items

    I have some concerns
    1. A lot of the sensors will require a larger power supply (18-30 VDC).
    2. There are 13 sensors + 6 status controller which should be logged.
    3. Can we just transfer some data from an existing PLC (e.g. temperature, humidity, pressure, CO2, status) to the data logger. In this case we will need to use only the current sensors (VERIS H921) with the data logger directly, isn’t it? Does it mean that we will require only one data logger with minimum number of inputs?

    Thank you!
    Sorry for my English, it's foreign language for me.



  2. #2
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    Re: Data logger

    It might be worth your while talking to https://www.picotech.com/
    Mostly found in the southern part of this green and pleasant land.

  3. #3
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    Re: Data logger

    Thank you!

  4. #4
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    Re: Data logger

    -Cheers-

    Tycho

  5. #5
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    Re: Data logger

    Quote Originally Posted by Tycho View Post
    Thank you!

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