Testo Handheld Hygrometers, Psychrometers & WBGTs
Discover the top Testo handheld hygrometers for precise humidity readings. Ensure accurate measurements for your projects—read the full guide now!
Find out more about Testo Handheld Hygrometers, Psychrometers & WBGTs below.

- Bendable probe head
- Bluetooth range: up to 100m
- Designed for use with a smartphone/tablet with the Testo Smart Probe App installed

- Long sensor probe for duct work
- Measures ambient air temperature and humidity
- Also calculates dew point

- Measures both relative humidity and temperature
- Temperature range of -50 to 50°C
- Dewpoint/wet bulb calculation

- Identify areas that are susceptible to mould
- Data logging Smart Probes send measurements wirelessly via Bluetooth to the Testo Smart Probe App
- Measure ambient temperature, relative humidity and surface temperature
About Testo Handheld Hygrometers, Psychrometers & WBGTs
Testo offers a range of handheld instruments that measure various environmental parameters, including hygrometers, psychrometers, and Wet Bulb Globe Temperature (WBGT) meters. These devices are essential for monitoring and accurately measuring humidity, temperature, and thermal comfort in various settings.
Hygrometers and Psychrometers
Testo's handheld hygrometers and psychrometers measure relative humidity and air temperature, providing insights into indoor climate conditions. For example, the Testo 610 is a compact, high-precision instrument that measures both temperature and humidity with an accuracy of ±2.5% RH. Additionally, it calculates dew point and wet bulb temperature, making it ideal for quick assessments in offices, production areas, and storage facilities.
WBGT Meters
The Wet Bulb Globe Temperature (WBGT) is an index used to assess heat stress in various environments. It accounts for factors such as temperature, humidity, wind speed, and radiant heat sources. Testo's WBGT kit, compatible with the Testo 400 Universal IAQ instrument, is ideal for determining WBGT. This kit is particularly useful in industries like steel and construction, sports events, and workplaces with high heat exposure.
Applications
- Indoor Air Quality Monitoring: Ensuring comfortable and healthy environments in offices, schools, and public buildings by monitoring humidity and temperature levels.
- HVAC System Maintenance: Assisting technicians in evaluating system performance and ensuring optimal operation by providing accurate humidity and temperature readings.
- Occupational Health and Safety: Assessing heat stress in workplaces, especially in industries with high-temperature operations, to prevent heat-related illnesses among workers.
- Sports and occupational health: For assessing heat stress risk in athletic and work environments.
Generally used by HVAC technicians, environmental engineers, and safety officers to maintain optimal environmental conditions.