Humidity

The testo 608-H1 digital thermohygrometer is ideal for continuous measurement of the indoor climate. You can therefore use the temperature and humidity measuring instrument in locations such as offices, warehouses, laboratories, garden centres or living areas to determine temperature, humidity and dew point. The hanging and standing brackets enable you to either hang the thermohygrometer on the wall or to place on a table or a shelf.

Be sure to keep an eye on the indoor climate – with the testo 608-H1 digital thermohygrometer
We recommend you use the testo 608-H1 digital thermohygrometer if you only want to view the real time temperature and humidity measurement values and are not interested in measurement data documentation and management. The digital thermohygrometer with a large and clear display provides you legibility even from a distance and shows the temperature, humidity and dew point.
In addition, you can display max. and min. values.

The digital thermohygrometer has an NTC temperature probe which performs very precise temperature measurements and a capacitive humidity sensor which is characterized by its long-term stability. This makes the testo 608-H1 digital thermohygrometer a reliable and durable partner for recording the indoor climate.

The thermohygrometer's battery life is approx. one year. As soon as the battery is coming towards the end of its life, you are notified about this in good time on the display.

Garden centers, offices, storerooms, laboratories, living quarters: the testo 608-H2 thermo hygrometer’s compact, unobtrusive design allows it to provide constant, up-to-the-minute readings of the indoor temperature and humidity without worrying how to place it, thanks to its wall and table mount for providing greater control and more flexibility.  

The testo 608-H2: the practical thermo hygrometer from Testo
The testo 608-H2 thermo hygrometer is the premium choice for all those who do not wish to document and archive measuring data, but who wish to be able to measure and see the temperature and humidity and calculate and display the dewpoint whenever it is needed. The meter comes with a large, easy-to-read display that also allows you to see the readings from a distance.

In addition, the testo 608-H2 can display both minimum and maximum values and has an LED visual alarm that is activated when a threshold has been exceeded. Both the upper and the lower threshold can be individually configured.

The high-precision, long-term stable humidity sensor ensures that your easy-to-use, easy-to-clean measuring device provides you with reliable readings for years to come.

The testo 608-H2 thermo hygrometer has a battery life of approximately one year and a battery status indicator that shows you when the battery is running low.

The testo 622 digital hygrometer and barometer is ideal for monitoring the ambient air. The meter measures the air temperature, relative humidity and the air pressure at a rate of once every ten seconds and displays the values – including the time and date – on the large easy-to-read display. A visual LED alarm alerts the room’s occupants when the threshold is exceeded.

The testo 622 digital hygrometer - complete with practical details
The testo 622 comes with both a wall and a table mount so that you can decide where best to put it. The digital hygrometer and barometer provides you with all the information you need on the ambient air temperature and pressure and the relative humidity.

The compact design, the large, easy-to-read display, the rate at which the meter carries out measurements and a battery life of up to 12 months ensure that your testo 622 is well-equipped to monitor the ambient air and provide you with accurate and reliable results. The batteries are easy to replace.

The compact and elegant hygrometer designed to grace any desk, table or wall and provides you with constantly reliable temperature and humidity readings in offices, living spaces or commercial premises.

The testo 623 hygrometer – technical features
The testo 623 hygrometer is designed to monitor the indoor temperature and relative humidity accurately and reliably. User-defined settings allow you to determine the length of the intervals between measurements – from 5 minutes to 24 hours. The readings are saved automatically over a period of 90 days and an alarm alerts the room’s occupants when a threshold has been reached.
The large, easy-to-read display shows a variety of information including the last reading, the time and date and a 90-day statistic. This statistic allows you to carry out a long-term analysis of the indoor temperature or humidity of the room without first having to access your computer.
The long-term stable sensor guarantees long-term, high-quality readings aids you relying on your hygrometer for reliable readings for years to come

Kit for carrying out measurements in storage, refrigeration and work rooms, in ventilation ducts and also on refrigeration systems and heat pumps. Keep the testo 440 air velocity and IAQ measuring instrument and the humidity/temperature probe with Bluetooth® safely stowed away in the case. So you can get down to work straight away!

Use the testo 440 air velocity and IAQ measuring instrument in combination with high-quality probes to measure and store all air velocity and IAQ parameters (please order probes separately). Up to 3 probes can be connected simultaneously: a Bluetooth probe, a wired probe and a temperature probe with type K thermocouple connector. Automatic probe detection and clearly structured measurement menus guarantee simple operation and will make your day-to-day work easier.

Humidity/temperature probe with Bluetooth – features

The readings of the humidity/temperature probe are transmitted to your measuring instrument via Bluetooth, up to a distance of 20 m.

Particularly useful: store individual readings directly in the measuring instrument by pressing the button on the humidity/temperature probe. The clearly structured measurement menu for long-term measurement enables the measuring instrument to be operated intuitively. Reading trends are reliably recorded thanks to the convenient input of measurement time and measuring cycle. These trends enable you to evaluate changes in the data.

Proven quality from Testo: you can depend on reliable measurement results, because the humidity/temperature probe is equipped with our long-term stable humidity sensor. This is traceable to international humidity standards, such as ILAC, PTB and NIST. 

Wireless and space-saving: more applications, less equipment

Endlessly versatile: a universal handle can be connected to all probe heads – so you can master more applications using less equipment and save space. The Bluetooth handle makes it more convenient to carry out your measurement and guarantees less cable clutter in the case.

Or order the cable handle to connect testo probe heads. This is an advantage if Bluetooth signals are not permitted. If the humidity sensor needs to be replaced in the distant future, you can change the probe head. 

Intelligent calibration concept

You will get exceptionally accurate measurement results with the digital probe, because the measuring instrument makes measurement uncertainty a thing of the past. You only need to send the probe head in for calibration – so the measuring instrument remains in continuous use. 

Areas of application for the humidity/temperature probe

Storage and refrigerated rooms: Thanks to a large measuring range of 0 to 100% RH and -20 to +70 °C, you can measure relative humidity and air temperature in storage and refrigerated rooms with reliability.

Work rooms: If the air is too dry or too humid, this affects our well-being and the comfort level. Use the humidity/temperature probe to monitor relative humidity, air temperature, dew point and wet bulb temperature in work rooms. For long-term measurements, measurement data trends can be recorded in the compatible measuring instrument.

Ventilation ducts: With a probe head diameter of 12 mm, the probe is ideal for humidity and air temperature measurements in ventilation ducts. Dew point, wet bulb temperature and absolute humidity are automatically calculated in the compatible measuring instrument.

Refrigeration systems and heat pumps: Heating and cooling output are important parameters for adjusting refrigeration systems and heat pumps. Use the humidity/temperature probe to measure the relative humidity and air temperature (for this measurement please order two humidity/temperature probes). The heating and cooling output are automatically calculated in the compatible measuring instrument.
 

The testo 625 compact thermohygrometer has a connectable humidity sensor which measures the air temperature and relative humidity. In addition, it also calculates the dew point and wet bulb temperature.The meter is equipped with a large, easy-to-read, backlit display, a hold function which allows you to freeze the last reading and min and max readings that can be displayed at the touch of a key. In addition, the testo 625 has a battery-friendly power off mode and a long life moisture sensor which ensures best possible results for years to come.

Wide range of accessories for even more features

The testo 625 thermohygrometer is equipped with all the basic functions. You may, however, also individualize your thermohygrometer with one of the following accessories:

1. Hand grip with sensor guide: simply remove the humidity sensor and connect the hand grip with sensor guide (optional) to get to hard-to-reach or otherwise inaccessible places
2. Wireless hand grip: connect the humidity sensor to the wireless hand grip (optional) and equip your thermohygrometer with the wireless module (optional) to carry out wireless measurements. The measurements can be transmitted wireless from the sensor to the meter over a distance of up to 20 meters (in the open).
3. Protection against dirt and shock: a carry case (optional) ensures that your meter and the sensors are safely stored away when not in use. The durable TopSafe protective case protects your meter effectively against dirt ingress and impact.

The testo 610 thermo-hygrometer enables fast and precise measurement of temperature and humidity in indoor areas, for example in offices, warehouses, production facilities or server rooms. Furthermore, the user-friendly measuring instrument can calculate both dew point and wet bulb temperature for you. Both values serves as important factors in terms of assessing the indoor climate as they enable you to conclude the relationship between temperature and humidity.

Reliable technology, ease of use: testo 610 thermo-hygrometer
With its built-in NTC temperature sensor, the testo 610 thermo-hygrometer offers great accuracy when it comes to temperature measurement. The thermo-hygrometer measures humidity using its capacitive humidity sensor which is characterized by its long-term stability. The two sensors make the testo 610 a reliable and durable thermo-hygrometer.

The thermo-hygrometer is easy to use: the current temperature and humidity values are easily legible on the illuminated display. In addition, you can display the calculated dew point and wet bulb temperature, as well as min./max. values. With its clip-on protective cap, wrist strap and belt pouch, the handy thermo-hygrometer can be safely stored and easily taken along to any measuring location.

If you are looking for a compact, user-friendly thermal hygrometer, the testo 605-H1 is the ideal choice. It measures relative humidity and air temperature and in addition, also calculates the dew point in the -20 to +50 °Ctd range. The built-in Testo humidity sensor ensures reliable measurement results with long-term stability.

The thermal hygrometer is suitable for check measurements in production, storage, office and server areas. The testo 605-H1 is particularly practical for measurements in ventilation ducts, thanks to the permanently mounted probe shaft (length: 125 mm). The bracket provided with the instrument enables you to position and fix the probe shaft in the desired location in the ventilation duct. This means you can carry out your measurements without holding the instrument constantly.

The design of the testo 605-H1 temperature and humidity measuring instrument has been well thought through, right down to the details: the display can be pivoted into different positions, enabling the measuring values to be read off easily. The rotating protective cap at the end of the probe shaft protects the sensor from mechanical stress when the instrument is not in use.

The testo 635-1 for temperature and humidity measurement is ideally equipped for checking the air humidity, temperature and dew point in living areas, in production, storage and server areas and in museums and cold stores. It also aids the measurements of the ambient absolute pressure and dew point in compressed air can be quickly and efficiently.

Attachable optional probes are available for recording the following values:

1. Air humidity
2. Material moisture
3. Pressure dew point in compressed air
4. Air temperature
5. Surface temperature
6. Core temperature
7. U-value
8. Absolute pressure

The testo 635-1 for temperature and humidity measurement has two probe inputs for plug-in probes with cables. In addition, upto three further temperature or humidity probes can be displayed with the testo 635-1 via radio-controlled data transmission i.e. wireless.

Robust, practical and easy to handle
In addition to readings, the testo 635-1 temperature and humidity measurement instrument also displays min., max. and mean values.
While the pressure dew point probe measures the pressure dew point in compressed air, the humidity probe helps in measuring the dew point and water content of indoor air along with the psychrometric temperature, in addition to air humidity and air temperature.
The measuring instrument also calculates the dew point distance between indoor air and wall surface. The “Applications” tab in testo 635-1, indicates whether a mould in the home has been caused by incorrect use of ventilation or by moisture ingress.
The user-friendly menu guidance, illumination function for reading legibility even in poor visibility and impact resistance due to its solid housing makes testo 635-1 very reliable and easy to use.

Documentation of measurement data with testo 635-1 temperature and humidity measuring instrument
The optional testo fast printer enables you to print out measurement data such as air humidity or temperature easily at any time.
The practical cyclical printing function on the testo 635-1 not only enables the printout of individual readings, but also of whole series of measurements on the testo fast printer at freely adjustable intervals (for example once a minute).

Humidity/temperature probe. Part No : 0636 9735 , Measuring range : 0 to +100 %RH, -20 to +70 °C, Accuracy : ±2 %RH (+2 to +98 %RH), ±0.3 °C

The testo 635-2 temperature and humidity measuring instrument is excellently equipped for carrying out a variety of measurements in the field of air conditioning. A wide selection of optionally available sensors and probes can be connected to the meter to provide you the following measuring data:

1. Relative humidity
2. Material moisture
3. Material compensation moisture
4. Pressure dew point in compressed air systems
5. HTC value
6. Air temperature
7. Surface temperature
8. Core temperature
9. Absolute pressure

Testo 635-2 is available with two sensor ports for pluggable sensors and up to 3 further temperature or moisture sensors which can be connected to the instrument via wireless along with an easy-to-read display.

Rugged, practical, easy to use
In addition to all the other measurements, the testo 635-2 temperature and humidity measuring meter also equips you to analyze levels of moisture at ceilings and walls by and calculate the dew point difference between the indoor air and the surface of the wall along with displaying min, max and mean values. Individually configured characteristic curves ensure that the material moisture content is displayed reliably
Both the meter and the menu guide are simple and comfortable to use with a backlit display which allows you to read the measurements even in poor lighting conditions. In addition, a strong protective case protects the meter effectively against any accidental knocks and bumps.

Saving, transferring and printing out data
as easy as pie with the testo 635-2 temperature and moisture meter
It also allows you to save measuring sites and allocate the measuring data to the relevant site. Create individual user profiles to perform parallel long-term and material moisture measurements. Save up to 10 000 readings – individual measurements and measurement series – to your meter. The USB cable in the scope of supply can be used to connect your moisture meter to your PC or laptop and the software allows you to log and archive your measuring data comfortably and easily. The optionally available testo fast printer also allows you to print out the measuring data on the spot.

The testo 606-1 moisture meter packed with a variety of quality features: easy to use; precise and absolutely reliable measurements; suitable for measuring moisture content for a wide range of different types of wood and building materials.

The two sensing electrodes are pushed firmly into the wood or building material where they measure the moisture content as a percentage based on the dry mass (dry weight).

The hold function freezes the last measurement while the backlit display ensures that the meter can be used in all lighting conditions. A slip-on protective cap and belt holder ensures the safe storage of the moisture meter and a hand strap helps prevent the meter from accidentally being dropped.

Practical –the characteristic curves in the testo 606-1 moisture meter

The testo 606-1 comes with a wide range of characteristic curves for wood and building materials. This allows the measured moisture content to be shown directly as a weight percentage.

Characteristic curves for precise wood moisture measurements:

1. Beech
2. Spruce
3. Larch
4. Oak
5. Pine
6. Maple

Characteristic curves for precise building material measurements:

1. Cement scree
2. Concrete
3. Plaster
4. Anhydrite screed
5. Cement mortar
6. Lime mortar
7. Bricks

The testo 606-2 moister meter equips you for moisture measurement in different types of wood and building materials. Apart from measuring moisture in the same way as the testo 606-1 moisture meter, the testo 606-2 also measures the relative humidity and air temperature and calculate the dew point and wet bulb temperature.
This means that you can now also measure the relative humidity in the surrounding storage area in addition to the moisture content of the wood you have stored. Armed with such valuable information, you can now easily determine whether the storage conditions are ideal or need to be adjusted.

Characteristic curves for precise moisture measurements in wood and building materials
The moisture meter testo 606-2 measures the moisture content of wood and building materials via the two sensing electrodes which are pushed firmly into the material. The characteristic curves of the different materials allow the moisture content to be displayed directly as a weight percentage based on the dry mass (dry weight). The following characteristic curves are stored in the testo 606-2 moisture meter:
- For precise moisture measurements in beech, spruce, larch, oak, pine, maple
- For detecting moisture and wet places in building materials like cement screed, concrete, plaster, anhydrite screed, cement mortar, lime mortar and bricks

The testo 606-2 moisture meter – compact, practical, professional, easy to use
A variety of practical functions and features including a hold function which freezes the last reading; a backlit display for use in all lighting conditions; a slip-on protective cap, a belt holder which ensures safe  storage and a hand strap that helps prevent your meter from being accidentally dropped, makes moisture meter testo 606-2 an efficient instrument for carrying out professional and reliable measurements

Testo 616, the compact sized instrument for moisture measurement aids in precise and non-destructive measurement of moisture content of wood and building materials and of monitoring the drying process after water damage. Inspect the moisture content as a weight percentage compared to the dry weight by simply selecting the characteristic curve and placing the meter’s measuring claw against the surface of the material. You can also save the reading to your meter by just pressing the relevant key.

Although the measuring claw only comes into contact with the surface, wall or flooring that is being measured, it is able to determine the moisture content of the wood or other material down to a depth of 5 cm.

Ideal areas of use for the testo 616 moisture meter

The testo 616 moisture meter is a professional measuring device that can be used in areas as diverse as water damage restoration or carpentry or joinery.

1. Moisture damage detection: the non-destructive method for finding moisture in walls and floors
2. Monitoring drying processes: from carrying out moisture inspections to meeting building schedules to controlled drying after water damage – the non-destructive method for determining the moisture content in wood and building materials
3. Moisture in wood: for checking the moisture content of wood that has been stored prior to processing

testo 616 moisture meter with 10 characteristic curves

1. Soft wood
2. Hard wood
3. Pressboard
4. Anhydrite screed
5. Cementscreed
6. Limesandbrick
7. Gas concrete
8. Concrete
9. High insulationbricks
10. Brickwork

Testo 645 high-precision humidity and temperature measuring instrument offers two probe inputs for attaching a comprehensive range of probes:

1. Channel 1: temperature probe, type K/J/S, NTC
2. Channel 2: humidity/temperature probe or Pt 100 temperature probe

At the touch of a button, the thermohygrometer automatically indicates the measurement parameters of temperature, relative humidity, dew point, pressure dew point, absolute humidity, degree of humidity and enthalpy, along with min., max. and mean values, as well as the last measured value. Convenient evaluation of the measurement data is possible using the optional PC software. Measurement data can also be printed out directly at the measuring location via the optional testo fast printer.

Areas of application of the testo 645 humidity/temperature measuring instrument

1. Monitoring of temperature and humidity values in production, storage and server rooms, museums, archives, cold stores, containers and display cases
2. Location of mould formation in residential or other buildings