Digital Thermo-Hygrometer: Dwyer 485B

The Dwyer Model 485B Digital Thermo-Hygrometer is a compact, handheld instrument engineered for accurate measurement of relative humidity and temperature in °F or °C. It also calculates dew point and wet bulb temperature, providing comprehensive environmental data in a single device. Designed for field reliability, the 485B features a clear LCD display, data hold function, and onboard memory for trend tracking. Its durable probe and portable design make it ideal for HVAC diagnostics, industrial environments, and indoor air quality assessments.

Key Features
Measures RH, temperature, dew point, wet bulb
4.5-digit LCD display
Data hold function
Stores up to 99 readings
Compatible with AP1 & VP1 probes

Technical Specifications
RH Range: 0–100%
Temp Range: -20 to 140°F
RH Accuracy: ±2% FS
Temp Accuracy: ±0.3°C
Resolution: 0.1% / 0.1°
Power: 9V battery

Applications
HVAC testing, building commissioning, IAQ checks, pulp & paper, laboratories

Availability
Available from Lystus Technical, authorized dealer, distributor, and supplier.

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