Humidity Measuring Instruments

Product Details:

Relative humidity and air temperature are two decisive factors e.g. for the assessment of indoor air quality and comfort. So if you want to ensure that people are comfortable indoors or that optimum conditions prevail in storage rooms , the compact testo 625 thermohygrometer is the ideal choice. To obtain precise results as quickly and easily as possible, the testo 625 not only calculates dewpoint and wet bulb temperature automatically. The time and the point averages are also displayed immediately. And with the testo Smart App, you get the most out of the thermohygrometer:
Configure measuring instrumentDisplay graphical measured value curveSave measurement dataManage customers and measuring sitesDocumentation on siteE-mail dispatch of the report

Additional Information:

• Item Code: Testo-625

Product Details:

The new temperature and humidity Large Display Hygrometer testo 623 shows current and past temperature and humidity values in a large clear display. This makes an analysis of the current and past ambient conditions possible, directly on site and without time consuming analysis on a PC. The instrument displays the current temperature, Humidity, date & time with calibration remainder. In all the instrument has the below advantages.

• Histogram shows current and past temperature or humidity values.
• Hanging and standing bracket allows flexible positioning on a wall or desktop
• Analysis of past temperature and humidity values directly on site without evaluation on a PC
• All important values at a glance: current and past temperature and humidity values as well as date and time

Additional Information:

• Item Code: Testo-623

Product Details:

With the temperature and humidity data loggers testo 184 H1, you can monitor the transport of sensitive goods such as pharmaceuticals, foods or electronics or art, over an unlimited period.

• Unlimited operating time
• Immediate creation of a PDF report directly after connection to a computer
• All in one logger: PDF measurement data, configuration file and instruction manual
• Compliant with GxP, 21 CFR Part 11 and HACCP

Additional Information:

• Item Code: testo184H1

Product Details:

We offer dew point analyzers. The Testo 6740 was especially developed for trace humidity measurement in compressed or dry air (e. G. Granulate dryers). Thanks to a special adjustment, optimum accuracy in the trace humidity range has been achieved. The result of the development of the Testo 6740 is a measuring range of -45 °ctd to +30 °ctd and excellent accuracy.


For the display of the relevant trace humidity parameters, a freely scalable analog output is available, optionally with a switch contact plug for the max monitoring. In addition to this, the Testo 6740 stands out thanks to its compact and user-friendly design, such as the rotatability of the housing by 350° for the optimum positioning of the display.


Areas of application:

• Refrigeration dryers
• Membrane dryers
• Adsorption dryers
• Granulate dryers

Additional Information:

• Item Code: Testo6740

Product Details:

Humidity Transmitter Device Testo 6651 having the Optimum calibration concept with

• adjustment of entire signal chain, including analog adjustment, without dismantling the transmitter
• 1-point adjustment can be performed on-site easily and quickly using t400 or t650
• 2-point adjustment via P2A software or user menu

Parameter zing, adjusting and analyzing software (P2A) for setting up, adjusting and analyzing the transmitter:

• Parameterization of unit and scaling
• Adjustment (see above)
• Reset to factory settings
• Testing of analog outputs/relays
• Requesting of max./min. values
• Parameterization and adjustment history: All activities of the P2A software are registered with an operating time stamp in the internal log.

Additional Information:

• Item Code: Testo-6651

Product Details:

Testo 622 hygrometer with pressure indication, calibration protocol, batteries and attachment material included

• 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

In addition to temperature and humidity, the testo 622 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 felxible 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

Additional Information:

• Item Code: Testo-622

Product Details:

Humidity & Dew Point Meter Testo 635 is a sleek portable instrument and comes in two variants with and without memory. In both the variants different types of probes for measurement of temperature, humidity, material moisture and pressure dew point. The variant with memory comes with an software and can be programmed as a data logger. The data can be read out using a USB port and also can be printed on site using an infrared printer (accessory).

Up to two probes temperature or humidity can be connected and data displayed in the testo 635 meter. 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. Pressure Dew point down upto 60 tpd can be measured using this instrument in compressed air or gases like SF6. In all the instrument has the below advantages.

• 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
• U value probe connection option
• The instrument testo 635-1 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.
• Similarly testo 635-2 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

Additional Information:

• Item Code: Testo-635

Product Details:

The Testo 6621 Humidity Transmitter is a high-performance transmitter for a low price. It meets the increasing requirements in automated building services in terms of accuracy, reliability and safety and thereby saves energy costs.


A broad variety of the Testo 6621 transmitter is available. Depending on the application in a room or in a duct, the corresponding designs can be selected. A display and an external probe are available as options. You can choose between the housing colours grey and white. The Testo 6621 is persuasive in technical terms thanks to the patented humidity sensors that guarantee the highest accuracy. The sensors and the analog outputs can be adjusted, analyzed and parameterized via the external interface using the P2A software.


The product is placed in the lower price range and is equipped with the features important for the application range as well as some new, beneficial features:

• An attractive, simple design, ideally suited for use in public view
• The reliable, tested Testo humidity sensor
• Fast and easy on-site adjustment with Testo handheld instruments (types testo 400 and testo 650)
• Easy-to-use P2A software for parameterization or adjustment

Areas of application:

• Industrial and commercial buildings, e.g. production and storage
• Offices and administrational buildings
• Sales areas and exhibition hall
• Museums and libraries
• School buildings, hotels, clinics etc.

“Please contact us for various other models of Humidity Transmitters”

Additional Information:

• Item Code: Testo-6621

Product Details:

Extremely reliable humidity measurement in processes and OEM plants thanks to automatic early warning and status reports (preventive maintenance).The new air conditioning and industrial humidity transmitters testo 6651 and testo 6681 provide you with the following features :

• Highest accuracy up to ±1.0 % RH
• First humidity transmitter with Profibus-DP interface
• Digital probe of the 6610 instruments: can be calibrated and exchanged and is equipped with its own order number

Probes for specific applications:

• testo 6614: Heated probe for long-term high-humidity processes
• testo 6615: Trace humidity measurement with automatic adjustment
• testo 6617: Integrated sensor self-diagnosis
• Further wall, duct and cable versions can be configured upon customer request and are heat resistant up to +180 °C

Additional Information:

• Item Code: Testo-6681

Product Details:

Testo 608-H1

Testo 608-H1 thermohygrometer humidity/dewpoint/temperature incl. battery
With dew point calculation td and max/min display
Humidity sensor is not affected by condensation

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.
 
Features:
 

• With dew point calculation td and max/min display
• Humidity sensor is not affected by condensation
• Battery monitoring

Testo 608-H2

Humidity/dewpoint/temp. meas. instr., incl. LED alarm, battery and calibration protocol
High accuracy ±2 %RH (testo 608-H2)
testo 608-H2, with LED alarm, warns if limits are exceeded

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.
 
Features:
 

• 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

Additional Information:

• Item Code: Testo-608-HI-H2