The Dickson TH8-7F is an 8-inch chart recorder engineered for continuous temperature and humidity monitoring across diverse environments. This self-contained, battery-powered instrument delivers dual-channel recording on 7-day or 24-hour charts with spiral-wound bi-metallic temperature sensing and cellulose acetate-butyrate humidity sensing. Built with durable metal construction and a polycarbonate door, the TH8-7F provides reliable data logging in computer rooms, laboratories, storage facilities, and controlled environments where precision environmental documentation is mandated.
## Technical Specifications
• **Chart Diameter:** 8 inches (20.3 cm)
• **Recording Interval:** 7-day or 24-hour
• **Temperature Range:** −20 to +120°F (−20 to +50°C)
• **Humidity Range:** 15 to 85% RH
• **Temperature Sensor:** Spiral-wound bi-metallic strip transducer
• **Humidity Sensor:** Cellulose acetate-butyrate strips
• **Temperature Accuracy:** ±2% of full scale
• **Humidity Accuracy:** ±3% from 15 to 85% RH
• **Response Time:** 15 minutes to 63% of scale at 5 ft/sec air velocity
• **Dimensions:** 9.5″ × 9.5″ × 4.125″ (24 cm × 24 cm × 10 cm)
• **Weight:** 6 lbs (2.7 kg)
## Key Features
• Single “AA” alkaline battery with up to 1-year runtime
• AC adapter input: 120 to 240 VAC
• Battery backup for operation during power loss
• Replaceable sensors for straightforward calibration and maintenance
• Digital display for real-time readings
• USB compatibility for data transfer and analysis
## Typical Applications
• Computer room climate monitoring
• Laboratory environmental control documentation
• Office HVAC verification
• Storage area condition logging
## Compatibility & Integration
The TH8-7F requires Dickson brand replacement charts. Standard package includes one “AA” alkaline battery, pens, starter pack of charts, and instruction manual.
