Cole-Parmer Two-Speed, Spring-Wound Hygrothermograph

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$1,269.90 $1,494.00
2 – 9$1,232.55
10 +$1,195.20
SKU: WD-37250-10
Item Number: WD-37250-10
Model Number: 37250-10
Manufacturer: Oakton Instruments
Brand: Cole-Parmer
MPN: 37250-10
Condition: New


Cole-Parmer 2-Speed, Spring-Wound Hygrothermograph (each)

Use this hygrothermograph for indoor or sheltered outdoor use. The sturdy base, tinted cover, and carrying handle are constructed of lightweight, corrosion-resistant acrylic.
Hygrothermometer needs no external power or batteries; spring winding keeps the chart running for 8 days. Unit maintains a steady chart speed even when the motor begins to run down. Two easy-to-change gears are included; one for 1-day (26-hour) rotation and another for 7-day (172-hour) rotation.

Feature a human hair bundle humidity sensor and an aged bimetallic strip temperature sensor. Response time is 15 minutes for 45% of reading.

Exposure to RH levels above 90% can cause a decrease of about 7-10% RH in readings over the entire range due to temporary elongation of the hair bundle. When exposed to humidity levels below 80%, hair bundle will return to normal in about three weeks.

Product Type: Hygrothermograph
Brand: Cole-Parmer
Class: Drum
Temperature Range: 14 to 122°F (–10 to 50°C)
Temperature Accuracy: ±1.8°F (±1.0°C)
Humidity Range: 5 to 90% RH
Humidity Resolution: 1% RH
Humidity Accuracy: ±3% from 10 to 90%; ±5% from 5 to 10%
Speed: 24 hour; 7 day (user selectable)
Power Supply: Spring wound
Includes: gear for 1 day rotation, gear for 7 day rotation, red felt-tipped pen, blue felt-tipped pen, roll of 7-day paper, C battery (1)

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