The Dickson TM325 is a dual-channel temperature and humidity data logger with a remote probe for flexible environmental monitoring across varied locations. Real-time readings display on a 4-digit LCD screen, while user-selectable sample intervals from 1 second to 24 hours enable customized data acquisition strategies. The logger stores 32,000 total samples (16,000 per channel) and triggers audible and visual alarms for high/low excursions. Data downloads via USB, serial connection, or removable flash memory card, integrating with DicksonWare™ software (v8.3 or higher) for analysis and reporting.
## Technical Specifications
**Temperature Measurement**
• External probe range: −40 to +185°F (−40 to +85°C)
• Accuracy: ±0.8°F (±0.5°C)
• Sensor type: Thermistor
• Resolution: 0.1° from 0.0 to 999.9; 1° above 1000
**Humidity Measurement**
• Range: 0 to 95% RH (non-condensing)
• Accuracy: ±2% RH @ 77°F (25°C)
• Sensor type: Monolithic IC humidity sensor
**Data Logging**
• Sample interval: 1 second to 24 hours, selectable in 1 to 10-second increments
• Total capacity: 32,000 samples (16,000 per channel)
• Remote probe: 6 feet (2 m) cable
**Display & Enclosure**
• LCD: 4-digit, 2.0″ × 1.375″ VA, TN positive reflective mode
• Housing: Polycarbonate, 4.0″ × 3.0″ × 1.6″ (10.2 × 7.7 × 3.9 cm)
• Weight: 9 oz (3 lbs with batteries and packaging)
• IP Rating: IP20
• Wall mountable via keyhole slots
## Key Features
• High/low audible alarm with visual notification
• 4 AA alkaline batteries (user replaceable) with 6-month typical life at 1-minute intervals
• Optional 120 VAC/60 Hz AC adapter (9 VDC/1A output)
• Multiple data transfer options: USB, serial, or flash memory card
## Environmental Specifications
• Logger operating: −4 to +158°F (−20 to +70°C); 0 to 95% RH non-condensing
• Probe operating: −40 to +185°F (−40 to +85°C); 0 to 100% RH non-condensing
• Storage: −40 to +176°F (−40 to +80°C); 0 to 100% RH non-condensing
## Compatibility & Integration
DicksonWare™ software (v8.3 or higher) supports data analysis, trending, and reporting. CE approval confirmed.
