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Onset HOBO MX2501 Bluetooth pH and Temperature Data Logger



Bluetooth pH and Temperature Data Logger

Part Number: MX2501

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  • Long-Term pH and Temperature Measurements in Estuaries, Lakes, Streams, Rivers and Oceans (Salt and Freshwater Environments)

  • Wireless Transmission of Recorded Readings to Phone or Tablet Using Bluetooth Smart LE Communications

  • 2.0 to 12.0 pH and 2C to 50C Measurement Ranges and +/-0.10pH and +/-0.2C Accuracy

  • User-Replaceable Lithium Battery with 1 Year Typical Life (1 Minute Sampling Rate and Bluetooth Always On)

  • Stores up to 43,300 Measured Readings with Date/Time Stamp if Bluetooth Communications Not Available


Includes pH Electrode and Lithium Battery. HOBOmobile App Available on the Apple Store (iOS) and Google Play (Android)

  • Answer:

    Yes, this like most pH loggers and sensors typically need to have their pH electrode replaced somewhat regularly to ensure accurate readings.  With normal use Onset recommends replacing it every six months.   The electrode is available for purchase as a replacement item separately and shown on the right side of the webpage under "Related Products".   The part number is MX2500-ELECTRODE and it costs $115.  Here is a link to the page for it -

    https://www.microdaq.com/onset-hobo-mx2500-replaceable-ph-electrode.php

     

    It is also recommended that you calibrate the sensor before each use using a pH solution.  These are also listed on the page as accessory items however you are free to use any other pH solution you might already have.

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