testo 440 - Humidity Kit Multi-Function Hygrometer
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The Story
The Testo 440 Humidity Kit is a comprehensive solution for measuring humidity and temperature in storage, refrigeration, and work rooms, as well as ventilation ducts. It includes the Testo 440 air velocity and IAQ measuring instrument and a Bluetooth humidity/temperature probe, offering intuitive measurement menus, precise calculations of dew point and absolute humidity, and convenient data storage and export via USB. This kit is ideal for professionals in HVAC, refrigeration, and indoor air quality assessment.
add_circle The Upside
- check High accuracy with long-term stable humidity sensor (±2% RH, ±0.5°C)
- check Convenient wireless operation reduces cable clutter
- check Intelligent calibration concept allows continuous use of the instrument
remove_circle The Downside
- close Probe not suitable for condensing atmospheres or prolonged high humidity
- close Requires AA batteries (3 for instrument, 4 for probe) which may need frequent replacement
- close Limited to one digital probe connection at a time
Specifications & features
Key features
- check_circle Intuitive measurement menu for long-term monitoring and parallel humidity/temperature determination
- check_circle Precise calculation of dew point, wet bulb temperature, and absolute humidity
- check_circle Wireless Bluetooth probe with up to 20 m range and handle button for storing readings
- check_circle Internal data storage for up to 7500 measurement protocols with USB data export
- check_circle Expandable with a wide portfolio of digital probes for air velocity and IAQ
Specifications
Accuracy (Humidity)
±2% RH
Accuracy (Temperature)
±0.5 °C (probe); ±0.3 °C (NTC at -25 to 74.9 °C)
Battery Life
12 h (typical vane measurement)
Battery Type
3x AA (instrument) + 4x AA (probe)
Tags
Other
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