Oakton 3-Speed, Battery-Operated Hygrothermograph.
Humidity RH Range: 5 to 90% RH
Accuracy: ±3% from 10 to 90% RH, ±5% from 5 to 10% RH
RH Sensor: one human hair bundle
Temperature Range: 14 to 122°F, ±1.8°F
-10 to 50°C, ±1°C
Temperature Sensor: aged bimetallic strip
1 day (26hr), 7 day (172 hr), or 32 day (810 hr) chart rotation. 6.63"H x 11.5"L chart sizes.
This Hygrothermograph operates at 1, 7, or 32 day speeds with the flip of a switch. The quartz-controlled drive mechanism consistently rotates chart drum even when batteries are weak.
Includes: red felt-tipped pen, blue felt-tipped pen, roll of 7-day paper, C battery (2). |
