Three-Speed Hygrothermograph
Three-Speed Hygrothermograph

: $929.00
: $790.00
You save $139.00!

Availability:: Usually Ships in 2 to 3 Days
Product Code: WD-37250-00


Get maximum versatility from three rotation speeds

  • Quartz controlled drive gives consistant drum rotation speed even as batteries weaken
  • Record temperature and humidity on 1, 7 or 32 day rotation
  • Lightweight and corrosion resistant construction for indoor or sheltered outdoor use

Maintain temperature and humidity records for buildings or controlled environment chambers. Use one-day rotation for detailed views of troubled areas, longer rotation times for routine records.

A flashing LED indicates drum is rotating. Two size C batteries provide up to six months of continuous operation. Features a battery test button.

Includes red and blue pens, batteries and one seven-day rotation chart.


HumidityRange5 to 90% RH
HumidityAccuracy3% from 10 to 90% RH;
5% from 5 to 10% RH
HumidityChart range0 to 100% RH
HumidityChart graduations1% RH
Temperature Range-10 to 50C / 14 to 122F
Temperature Accuracy1C / 1.8F
TemperatureChart graduations1C or 2 F
Chart size6.6"H x 11.5"L (16.8 cm H x 29.2 cm L)
Chart rotation1 day (26 hr), 7 day (172 hr), or 32 day (810 hr)
Power2 "C" batteries

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