Testo offers a wide range of products for Humidity Measuring Instruments such as Testo 608, Testo 622, Testo 623, Testo 625, Testo 635 and Testo 645.
Item Code: Testo-608
Testo 608 Thermohygrometer
The affordable standard Testo 608-H1 hygrometer measures humidity, temperature and dewpoint non-stop. The efficient Testo 608-H2 alarm hygrometer with LED alarm function for accurate signals when limits are exceeded.
With dew point calculation td and max/min display
Humidity sensor is not affected by condensation
The accurate Testo 608-H2 alarm hygrometer reliably indicates when humidity and temperature limits have been exceeded, for example in garden centres, warehouses, cleanrooms, museums, laboratories etc.
All the benefits of Testo 608-H1
High accuracy ±2 %RH (Testo 608-H2)
Testo 608-H2, with LED alarm, warns if limits are exceeded
Item Code: Testo-622
In addition to temperature and humidity, the Climate Monitoring Instruments also measures pressure. In the large, clear display, it shows the current measurement values as well as the date and time. It thus provides all important values at a glance.
Hanging and standing bracket allows Flexible positioning on a wall or desktop
Large, optimally legible display
Precise measurement of temperature, humidity and pressure
All important values at a glance: current measurement values as well as date and time
Calibration and adjustment of the measuring instrument possible on site with the optional calibration and adjustment software
Adjustable calibration reminder function
Item Code: Testo-623
Testo 623 Hygrometer
Large Display Hygrometer with History Function
Measures & displays %rh, °C, psychometric parameters
Displays date and time
Displays history of measurement for the last 90 days
Visual alarms for both the channels with Max./Min. values
Item Code: Testo-625
The compact instrument with built-in humidity probe head for measuring air moisture and temperature. The large 2 line display shows humidity, wet bulb temperature or dewpoint as well as temperature. When measuring at hard-to-access points, the humidity probe head can be easily removed and attached to the handle via the probe cable (accessory). Alternatively, the readings can be transmitted wirelessly over wide distances from the probe to the measuring instrument. To do this, the humidity probe head is attached to the radio handle (accessory) and the radio module (accessory) is added to Testo 625.
Displays temperature and relative humidity / wet bulb temperature / dewpoint
Hold button to freeze readings
Auto Off function
TopSafe, the indestructible protection case (optional)
Patented humidity sensor
2 year guaranteed long-term stability
TopSafe, instrument protection against dirt and knocks (optional)
Item Code: Testo-635
Testo 635 Professional Humidity Meter
The instrument for measuring air moisture, material equilibrium moisture and pressure dewpoint in compressed air systems. Up to 3 temperature or humidity probes can be displayed; data transmission is radio-controlled, i.e. wireless. Measurement data can be transmitted by infrared to the Testo printer. It is also possible, during cyclical printing, to print measurement data once every minute, for example. Testo 635 immediately displays the dewpoint difference between ambient air and the wall surface when analysing moisture on walls and ceilings. There are precision probes up to -60°C tpd available to inspect pressure dewpoint in compressed air systems. The humidity sensor developed by Testo has proven itself world-wide and has outstanding features in terms of precision, long-term stability, temperature resistance and robustness.
Testo printer for documenting measurement data on site
Cyclical printing of readings once a minute, for example
Measures air moisture, material equilibrium moisture, pressure dewpoint
Radio probes for temperature and humidity
Protection class IP54
The instrument for measuring air moisture, material equilibrium moisture and pressure dewpoint in compressed air systems. Moisture characteristics can be recorded in the instrument memory and analysed and displayed in graphics or tables. Up to 3 temperature or humidity probes can be displayed in the Testo 635-2 meter; data transmission is by radio i.e. wireless. Selectable user profiles, i.e. allocation of specific function buttons and menu-guide to an application enable intuitive operation. Material moisture can be displayed immediately on account of the special probe. Characteristics for different materials can be stored in ComSoft and transmitted to the instrument. Testo 635 immediately displays the dewpoint difference between ambient air and the wall surface in the analysis of moisture on walls and ceilings. Precision probes up to -60°C tpd are available to check pressure dewpoint in compressed air systems. The humidity sensor developed by Testo has proven itself worldwide and has outstanding features in terms of precision, long-term stability, temperature resistance and robustness.
Instrument memory for up to 10,000 readings
PC software for analysis, filing and documentation of measurement data
Measurement of air moisture, material equilibrium moisture, pressure dew point
Radio probe for temperature and humidity
Protection class IP54
Direct display of material moisture due to freely settable characteristics curves (based on equilibrium humidity)
Storage of single measurements or measurement series by measurement location
Fast access to the most important functions via user profiles
U-value probe connection option
Item Code: Testo-645
The Testo 645 humidity measuring instrument automatically displays the parameters relative humidity, absolute humidity, dew point, degree of humidity, enthalpy and temperature. Convenient data analysis on your PC with location name.
Highly accurate humidity meas. to ±1%RH
Internal data memory
Convenient data analysis
Top Safe for tough applications
Channel 1: Temperature probe Type K/J/S, NTC
Channel 2: Combi-probe humidity/temperature or temperature probe Pt100