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Showing 85–96 of 144 results
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testo 608-H2 hygrometer with alarm, humidity/dew point/temperature
A reliable and precise humidity sensor is essential for measurements you and your customer can trust. The testo 608 is equipped with the patented Testo® humidity sensor, whose accuracy is validated by seven national standardization laboratories worldwide, allowing you to perform measurements with confidence.
- All advantages of the testo 608-H1
- Optical alarm signal when exceeding upper or lower set points for temperature, humidity, or dew point
- Guaranteed accuracy: ±2 % RH across the entire measurement range
- Includes calibration protocol
- Built-in calibration function using the Testo reference system
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testo 610, air humidity and temperature
<strong>Features:</strong>
* ±2.5 % RH accuracy with calibration protocol
<ul>
<li>Long-term stable Testo humidity sensor</li>
<li>Includes dew point and wet bulb temperature calculation</li>
</ul>
<strong>Application:</strong>
Spot measurements for quick climate control in rooms, e.g., in offices or production facilities.
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testo 622, temperature and humidity measurement device
Accurate measurement of temperature, humidity, and pressure.
Displays all data, including date and time.
Large, easy-to-read display. Configurable calibration reminder function.Sensor accuracies:
Temperature: ±0.4 °C + 1 digit
Humidity: ±2 % RH + 1 digit at 25 °C (10 … 90 %)
Application: Laboratory
Absolute pressure: ±3 hPa + 1 digit
Instant display of key values:
Temperature, humidity, pressure, date, and time
Selectable units:
Temperature: °C, °F
Humidity: % RH, dew point (td), wet bulb (wb)
Pressure: hPa, mbar, kPa, in Hg, in H₂O, psi
Maximum and minimum values with a single button press
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testo 623, temperature and humidity measurement device
The histogram displays temperature and humidity values over past days – an overview is available for up to 12 weeks. For the selected time interval, 12 histogram bars show intermediate values over the last 5 minutes, 10 minutes, 1 hour, 2 hours, or 12 hours.
Sensor Accuracy:
* Temperature: ±0.4 °C + 1 digit
* Humidity: ±2 % RH + 1 digit at 25 °C (10 … 90 %)Instant Display of Key Values
- Temperature, humidity, date, and time
- Selectable measurement units: temperature: °C, °F; humidity: % RH, td, wb
- Maximum and minimum values displayed with a single button press
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testo 625, humidity/temperature measuring instrument
With app connection and audible alarm, including nylon transport bag, batteries, and calibration protocol
Simple, fast, and precise measurement of air temperature and relative humidity.
Calculation of dew point and wet bulb temperature.
Quick setup in the app, graphical history, second screen, and storage of measurement data in the testo Smart App.
Audible alarm when limit values are exceeded.
With the compact testo 625 device, you can easily, quickly, and accurately measure air temperature and relative humidity to assess indoor air quality or ensure optimal conditions in storage facilities.
The testo Smart App provides useful functions such as configuration, display (also as a second screen), as well as storage and documentation of measured values directly in the app. -
testo 6321, differential pressure transmitter with selectable measuring ranges from 100 Pa to 2000 hPa
Selectable analog signal outputs and optional display (depending on configuration)
- Transmitter for measuring differential pressure in the range from 100 Pa to 2 bar
- A **solenoid valve** for **automatic zero point adjustment** guarantees high accuracy independent of temperature and long-term stability
- An **external interface** for adjustment and analysis saves time and reduces costs for commissioning and maintenance
- Optional display
testo 6321 differential pressure transmitter, accuracy **±1.2%** of the measuring range, **automatic “zero point” adjustment**, selectable measuring ranges from **100 Pa to 2000 hPa**, selectable analog signal outputs, external digital interface for adjustment and parameterization, optional display.
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testo 635-1, humidity and temperature measuring instrument
Includes battery and calibration protocol
This instrument measures air humidity, equilibrium moisture of materials, and dew point under pressure in compressed air systems. The display can show data from three humidity or temperature probes; data transmission can be done wirelessly using the radio option 9* (please check if this option is available in your country). Measurement data can also be sent to a Testo printer via the infrared port. During cyclic printing, data can be printed at regular intervals, e.g., once per minute. The instrument instantly shows the dew point difference between air temperature and the surface temperature of walls when analyzing wall and ceiling moisture. Precise probes are used for measuring dew point under pressure in compressed air systems, down to -60 °C. The Testo humidity sensor is globally recognized for outstanding accuracy, long-term stability, temperature resistance, and durability.
- Print measurement data on-site using a Testo printer
- Cyclic data printing on the Testo printer, e.g., once per minute
- Measurement of humidity, material equilibrium moisture, and dew point under pressure
- Radio probes for measuring temperature and humidity
- Protection class IP 54
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testo 635-2 humidity/temperature measuring instrument
with memory, PC software, and USB cable for data transfer, including battery and calibration protocol
The instrument is designed for measuring air humidity, material equilibrium moisture, and pressure dew point in compressed air systems. Humidity characteristics can be stored in the device’s memory, analyzed, and then displayed in graphical or tabular form. The device’s display can show data from up to three radio probes for humidity or temperature, transmitted wirelessly via the radio option (*please check the availability of this option in your country).
Selectable user profiles – for example, assigning specific function keys to particular tasks – and a user-friendly menu make the instrument intuitive to operate. Material humidity can be displayed instantly when a special probe is connected.
Characteristics for different materials can be pre-set in the ComSoft software and transferred to the instrument.When analyzing wall and ceiling humidity, the instrument immediately displays the dew point difference between air temperature and wall surface temperature.
For measuring the pressure dew point in compressed air systems, high-precision probes are available (up to -60 °Ctd).
The Testo humidity sensor is recognized worldwide for its outstanding accuracy, long-term stability, temperature resistance, and robustness.- Internal memory for 10,000 measurement datasets
- PC software for analysis, archiving, and documentation of measurement data
- Measurement of air humidity, material equilibrium humidity, and pressure dew point in compressed air systems
- Wireless radio probes for temperature and humidity
- Protection class IP54
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testo 6381, differential pressure transmitter
Calculates volumetric flow and flow velocity parameters, with optional humidity and temperature measurement, selectable measuring ranges from 10 Pa to 1000 hPa, selectable analog signal outputs, and optional display (depending on configuration).
- Automatic zero point adjustment guarantees high accuracy independent of temperature and long-term stability
- The low measuring range from 10 Pa ensures the highest accuracy for low pressure measurement
- Transmitter for measuring differential pressure, flow velocity, and volumetric flow, as well as, optionally, humidity and temperature
- Signal alarm function configuration: possibility to set signal delay and select the alarm acknowledgment type
testo 6381 differential pressure transmitter with flow velocity calculation function and optionally with temperature/humidity measurement function, accuracy ±0.5% of measuring range, automatic “zero point” adjustment, selectable measuring ranges from 10 Pa to 1000 hPa, selectable analog signal outputs, external digital interface for adjustment and parameterization, optional display, data output in all pressure, flow, and humidity units.
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testo 6383, differential pressure transmitter
testo 6383 for cleanroom applications, with optional humidity and temperature measurement, selectable measuring ranges from 10 Pa to 10 hPa, selectable analog signal outputs, and optional display (depending on configuration)
- The flat housing allows for flush mounting on the cleanroom wall
- The low measuring range from 10 Pa ensures the highest accuracy for low pressure measurement
- Transmitter for measuring differential pressure, as well as, optionally, humidity and temperature
- Automatic zero point adjustment guarantees high accuracy independent of temperature and long-term stability
testo 6383 differential pressure transmitter for cleanroom applications (panel mounting), optionally with temperature/humidity measurement function, accuracy ±0.3% of measuring range, automatic “zero point” adjustment, selectable measuring ranges from 10 Pa to 10 hPa, selectable analog signal outputs, external digital interface for adjustment and parameterization, display, data output in all pressure and humidity units.
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testo 6621, humidity transmitter for air conditioning systems
testo 6621 in wall or duct version, with selectable analog signal outputs, incl. two-line display (option), external interface for adjustment and commissioning, two analog outputs
- Transmitter with two analog outputs (temperature/humidity)
- High-precision Testo humidity sensor with long-term stability
- Adjustment without dismounting the transmitter
- P2A software for parameterization, adjustment, and analysis
testo 6621 temperature/humidity transmitter, accuracy ±2.0 % RH, wall or duct version, selectable analog signal outputs, optional display, external digital interface for adjustment and parameterization, 2 analog outputs
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testo 6651, temperature/humidity transmitter for critical environmental conditions
With the possibility of selecting analog signal outputs, optional display, optional Ethernet module, and optional relay (depending on configuration)
- High-precision external Testo humidity probes with long-term stability (accuracy up to **±1.7 % RH** depending on the probe type)
- The Ethernet module, relay, and analog outputs allow for optimal integration of the transmitter into individual automated systems
- High-quality **digital probes** and the **intelligent calibration concept**
- Self-monitoring and an **early warning function** ensure high system availability
testo 6651 temperature/humidity transmitter for critical environmental conditions, accuracy up to ±1.7 % RH (depends on the probe type), selectable analog signal outputs, optional display, optional Ethernet module, optional relays, external digital interface for adjustment and parameterization, 2 analog outputs.