Oakton, WD-37250-00, Oakton Three-Speed, Battery-Operated Hygrothermograph
WD-37250-00 Includes Only:
- Two felt-tipped pens (one blue and one red),
- One 7-day sheet of chart paper,
- Two C batteries.
Feature a human hair bundle humidity sensor and an aged bimetallic strip temperature sensor. Response time is 15 minutes for 45% of reading.
Three-Speed, Battery-Operated Hygrothermograph.
A flashing LED indicates that the unit is operational. Uses two C batteries (included) for up to 6 months of continuous operation. Test battery condition with the press of a button. The quartz-controlled drive mechanism consistently rotates chart drum even when batteries are weak.