Cole‑Parmer Two‑Speed, Spring‑Wound Hygrothermograph

Cole‑Parmer Two‑Speed, Spring‑Wound Hygrothermograph

This spring‑wound hygrothermograph provides dependable, battery‑free chart‑recorded monitoring of temperature and humidity for indoor or sheltered outdoor environments. The lightweight acrylic base, tinted cover, and integrated carrying handle make it ideal for portable or fixed‑location environmental tracking. The spring‑driven mechanism maintains a steady chart speed even as the motor winds down.

Key Features

• Spring‑wound design—no batteries required; runs for 8 days per winding.
• Maintains constant chart speed even as the motor slows.
• Includes two easy‑change gears for 1‑day (26‑hour) or 7‑day (172‑hour) rotation.
• Durable acrylic housing with tinted cover and carrying handle.
• 1‑year warranty.

More About This Item

Designed for indoor or sheltered outdoor use, this hygrothermograph operates entirely without external power. The spring‑wound drive keeps the chart drum rotating for up to 8 days, and the included gears allow quick switching between 1‑day and 7‑day recording periods. The sturdy acrylic construction resists corrosion and provides long‑term durability.

Model 37250‑10 is shown with optional axial fan 37250‑50 (sold separately).

Specifications

• Chart Type: Drum
• Chart Speed: 24‑hour; 7‑day (user selectable)
• Chart Width: 6.625 in
• Chart Length: 11.5 in
• Temperature Range: 14 to 122°F (‑10 to 50°C)
• Temperature Accuracy: ±1.8°F (±1.0°C)
• Humidity Range: 5 to 95% RH
• Humidity Accuracy: ±3% from 10–90% RH; ±5% from 5–9% RH
• Width: 13‑1/4 in (33.7 cm)
• Height: 11‑1/2 in (29.2 cm)
• Depth: 5‑37/64 in (14.2 cm)
• Description: Two‑Speed, Spring‑Wound Hygrothermograph
• Warranty: 1 year