Two-Speed Hygrothermograph from Oakton Instruments

Two-Speed Hygrothermograph spring wound - no batteries required!


Two,Speed,Hygrothermograph,Oakton,Instruments Record temperature and humidity on 1 or 7 day rotation

Made of corrosion-resistant acrylic for indoor or sheltered outdoor use. Spring winding keeps chart running for eight days. Even when the motor begins to run down, a steady chart speed is maintained. Includes one 1-day gear and one 7-day gear, two felt-tipped pens (red and blue), and one 7-day rotation chart.


Click below to download Acrobat (.pdf) file of:
Two-Speed Hygrothermograph product bulletin
Two-Speed Hygrothermograph manual

Humidity Range 5 to 90% RH
Humidity Accuracy ±3% from 10 to 90% RH;
±5% from 5 to 10% RH
Humidity Chart range 0 to 100% RH
Humidity Chart graduations 1% RH
Temperature Range -10 to 50°C / 14 to 122°F
Temperature Accuracy ±1°C / ±1.8°F
Temperature Chart graduations 1°C or 2 °F
Chart size 6.6"H x 11.5"L (16.8 cm H x 29.2 cm L)
Chart rotation 1 day (26 hr) or 7 day (172 hr)
Power spring wound
Dimensions 13.3" x 11.5" x 5.1" (33.8 x 29.2 x 13 cm)
Shipping weight 9 lbs (4 kg)

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