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Fluke Hygrometers

Fluke Hygrometers

Fluke Hygrometers Lead the Market in Accuracy


Hygrometers are used to measure humidity, which is simply the moisture content of the surrounding air. The Fluke Corporation’s solution for accurate and reliably humidity measurement is the DewK Thermo-Hygrometer line, a vital Fluke test tool. These precision-engineered devices are the most accurate temperature and humidity graphical data loggers on the market, featuring large, easy-to-read displays, optional wireless capabilities, and seamless integration with LogWare III and MET/CAL software.


Which Fluke Hygrometer is Best?


Fluke’s DewK Thermo-Hygrometer is available in a variety of models that differ in accuracy and accessories, so you’re sure to find one that suits your application. All DewK Thermo-Hygrometer model numbers begin with the number 16, but it’s the remaining digits that tell you which model is best for your particular needs. Here’s how to decode them:


  • The S models provide standard accuracy measurements of ± 0.25°C between 15°C and 35°C, with relative humidity measurements of ± 2% RH from 20-70% RH. The H models provide high accuracy measurements of ±0.125°C between 16°C and 24°C, with relative humidity measurements of ± 1.5%RH between 20% and 70% RH.


The two digits that follow the 16 will be either 20, 21, or 22:


  • The 1620 models include a single sensor, a wall mount bracket, and the necessary RS-232 cable.
  • The 1621 models add the 2627-S spare sensor kit and a single license for Fluke’s LogWare III software.
  • The 1622 models add even more, giving you wireless capabilities along with a USB modem for easy documentation in the field.


So if you’re looking for high accuracy, wireless capabilities, you’re looking for the Fluke 1622-H. If you want a more economical, standard-accuracy digital hygrometer, the Fluke 1620-S is your best value.


  • If portability is your most important criteria, the Fluke 971 is a basic, general-purpose handheld alternative that measures temperatures between -20°C and 60°C with ± 0.5°C accuracy, and relative humidity measurements between 5% RH and 95% RH with ± 2.5% RH accuracy.


Transcat Has Your Temperature and Humidity Measurement Solution


  • Our Fluke hygrometer selection can’t be beat, and neither can our prices. Our expert team is always here to help you find the right instrument for your application, and over 3,000 of our products are available for same-day shipping.
  • Our calibration labs hold one of the largest scopes of accreditation in the business. Give us a call to see how we can consolidate your calibration needs, and let us calibrate your new Fluke hygrometer before it ships so you can expect optimal performance from day one.



Order Your New Fluke Hygrometer Today!


For more information on selecting the right Fluke hygrometer, please use our Live Chat system, which is located on the right side of the page, fill out our Request a Quote form, or call Transcat directly at 800-828-1470 . 

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  1. Fluke Calibration 1620A-S-156

    DewK Thermo-Hygrometer Standard-Accuracy with RS-232

    Order #: 1620A-S-156

    Mfg #: 1620A-S-156

    Ships in 2-3 weeks

    $2,490.00 USD
  2. Fluke 971

    Temperature Humidity Meter

    Order #: 98237TE

    Mfg #: FLUKE-971

    In stock

    $349.99 USD

    $314.99 USD

  3. Fluke Calibration 1621A-H-156

    DewK Thermo-Hygrometer Kit, High Accuracy

    Order #: HART1621-H

    Mfg #: 1621A-H-156

    Ships in 2-3 weeks

    $4,185.00 USD
  4. Fluke 1621 KIT

    Earth Ground Tester Kit

    Order #: 1621 KIT

    Mfg #: FLUKE-1621 KIT

    Ships in 2-3 weeks

    $1,799.99 USD
  5. Fluke Calibration 2626-H

    Spare Thermo-Hygrometer Probe Size (L x Dia): 79 mm x 19 mm

    Order #: 2626-H

    Mfg #: 2626-H

    Ships in 3-4 weeks

    $1,125.00 USD
  6. Fluke C1620

    Professional Earth Ground Carrying Case

    Order #: C1620

    Mfg #: C1620

    Ships in 2-3 weeks

    $299.99 USD

    $269.99 USD

  7. Fluke Calibration 1620A-H-156

    DewK Thermo-Hygrometer High-Accuracy with RS-232 cable

    Order #: 1620A-H

    Mfg #: 1620A-H-156

    Ships in 2-3 weeks

    $2,840.00 USD
  8. Fluke Calibration 1622A-H-156

    DewK USB Wireless Kit High-Accuracy with RS-232 cable

    Order #: 1622A-H

    Mfg #: 1622A-H-156

    Ships in 2-3 weeks

    $4,825.00 USD
  9. Fluke Calibration 1622A-S-156

    DewK Thermo-Hygrometer Standard USB Wireless Kit

    Order #: 1622A-S

    Mfg #: 1622A-S-156

    Ships in 2-3 weeks

    $4,140.00 USD
  10. Fluke Calibration 2626-S

    Spare Thermo-Hygrometer Probe Size (L x Dia): 79 mm x 19 mm

    Order #: 2626-S

    Mfg #: 2626-S

    Ships in 2-3 weeks

    $645.00 USD

    $580.50 USD

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