Humidity sensors/dataloggers?

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    • #133297

      We’re scheduled to have a CAP assessment in a few months and need to log temperature and humidity data. We have some Thermocron iButton temperature loggers, so we’ve got temperature covered, but we need at least one (preferably 3 or 4) humidity sensor and have a fairly tight budget. Any recommendations?

    • #133298
      Rachael Arenstein

      Having your Temp measurements separate from your RH will be less useful to your Assessor than having a unit that correlates both measurements. This past spring I gave a C2C webinar on “Choosing the Datalogger that is Right for You”. You can view the talk and the associated Conserve O Gram in the C2C site at

      If cost is your main factor there are three products that I’d recommend considering:
      1. The Onset U12s are a solid product that has wide use in our field. The software is easy to use.
      2. The LogTag loggers performed well on our accuracy tests, have nice software and is a good product at an extremely cheap price point
      3. The Lascar EasyLog is also a decent logger, very small and cheap.

      None of these will do what some of the higher end loggers (e.g. the PEM2 or ACRs will do) but they will get you data that your Assessor can have faith in.

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