Available to buy the Testo 440 is a practical kit for the measurement of temperature and humidity in a wide range of applications such as indoor air quality studies and in HVAC ductwork systems. The 440 handset is a multifunction measuring instrument which can be used with a number of different optional indoor air quality probes, and the wireless Bluetooth probe can be used to accurately measure temperature & humidity over the range of - 20 to + 70 °C / 5 to 90 % rh, as well as the calculation of dew point, wet bulb temperature and absolute humidity.
Features
- A compact hand-held measuring instrument with intuitive measurement menus and a wide selection of air velocity and IAQ probes (optional accessories)
- Clearly structured measurement menus.
- Easy storage and evaluation of measurement data. Measurement data memory for up to 7500 measurement protocols, which can be read via a USB port and further processed as a CSV file on the computer (e.g. with Excel)
- Practical magnets for easy attachment of the measuring instrument to metal surfaces (e.g. ducts)
- Automatic detection of probes, e.g. humidity probe
- Large, backlit colour display
Scope of standard supply
Testo 440 air velocity and IAQ measuring instrument, 3 x AA batteries, USB cable and manufacturers calibration protocol
Testo Bluetooth temperature and humidity probe, 4 x AA batteries and calibration protocol (0636 9731). Basic case for testo 440 and 1 humidity probe
Technical
Probe part No. 0636 9731
Humidity sensor type Capacitive
Humidity measuring range 0 to 100 % rh
Humidity accuracy ± 2 % rh (5 to 90 % rh)
Humidity resolution 0.1 % rh
Temperature sensor type NTC
Temperature measuring range - 20 to + 70 °C
Temperature accuracy ± 0.5 °C
Temperature resolution 0.1 °C