Testo 625 Humidity Meter Hygrometer 0-100% RH 0563 1625

The Testo 625 is a professional humidity and temperature meter designed for precise measurement of relative humidity, air temperature, dew point, and wet bulb temperature. With a robust capacitive humidity sensor and NTC temperature sensor, it delivers reliable readings in HVAC, indoor air quality, and building diagnostics applications.

Advantages

High accuracy of ±2.5% RH and ±0.5°C, large LCD with backlight for easy reading, hold function and min/max value storage, automatic dew point and wet bulb calculation, long battery life of up to 70 hours, and auto-off function to save power.

Suitable for

• HVAC system monitoring and balancing
• Indoor air quality assessment
• Building moisture and mold prevention
• Warehouse and storage environment control
• Laboratory and cleanroom humidity checks

Key specifications

• Measurement range humidity: 0 to 100 %RH
• Accuracy humidity: ±2.5 %RH (at +5 to +95 %RH)
• Resolution humidity: 0.1 %RH
• Measurement range temperature: -10 to +60 °C
• Accuracy temperature: ±0.5 °C
• Resolution temperature: 0.1 °C
• Display: LCD with backlight
• Battery: 9V block battery, 70 h life
• Auto-off: after 10 min
• Housing: ABS, IP30
• Dimensions: 190 x 57 x 42 mm
• Weight: 200 g

Recommendations

For best results, calibrate the probe annually. Use the protective cap when not in use. Compatible with optional Testo humidity probes for extended measurement tasks.