ROTRONIC Humidity Measurement Instruments

ROTRONIC humidity instruments

ROTRONIC offers a comprehensive range of transmitters, data loggers, indicators, probes, sensors, and generators for the measurement and calibration of industrial measurement solutions for relative humidity, temperature, dew point, pressure, differential pressure, flow, CO2², and water activity.

Precise and accurate humidity measurement instruments

ROTRONIC’s major focus is industrial humidity measurement. The company offers precise and accurate measurement results through one of the most stable humidity sensors in the industry, which is combined with ROTRONIC’s unique HygroClip® digital technology.

The device’s instruments and probes measure both humidity and temperature, as temperature is critical to the proper measurement and interpretation of humidity.

High-accuracy humidity probes

The HygroClip2 is a high-accuracy humidity probe, with a strong performance. ROTRONIC’s new AirChip3000 technology provides the HygroClip2 with a unique calibration and adjustment process alongside many other superb innovations.

With new levels of dependability and performance, the HygroClip2 offers high-reproducibility and a superb system accuracy of <±0.8% relative humidity (rh) and ±0.1K.

Industrial measurement and monitoring devices

The ROTRONIC product range includes transmitters for heating, ventilation, and air conditioning (HVAC), as well as building management systems (BMS), manufacturing, and process control applications. Handheld indicators, data loggers, generators for metrology laboratories, and meteorological probes are also available.

Further applications include water activity indicators for quality control of foods, pharmaceuticals, and cosmetics. For special applications, Rotronic offers a line of intrinsically safe humidity probes and transmitters.

Transmitters for precise measurements

ROTRONIC’s transmitters are ideal for all applications where exact measurements are of decisive importance, such as the food, pharmaceutical, printing, paper, meteorology, agricultural, archaeology, and climatology industries.

There is hardly a field today in which these parameters may be ignored. It is ultimately the measuring task on hand that defines the instrument that best covers your needs.

Data loggers for long-term recording of humidity and temperature

ROTRONIC’s data loggers provide long-term recording of humidity and temperature conditions areas such as storage, shipping, production processes, and test facilities.

Once logged, data can be evaluated statistically, providing valuable information on conditions that can have an influence on people, materials, and objects.

The ROTRONIC data loggers fulfill requirements of the US Food and Drug Administration (FDA) 21 CFR Part 11 and good automated manufacturing practice (GAMP) 5. The loggers have a high-degree of functionality, while being highly accurate and easy-to-use.

Data can be shown in a graph or table. A large range of interchangeable probes means simple maintenance and flexibility in different applications and loggers are available in a range of configurations to suit a wide variety of applications.

Practical handheld instruments with interchangeable probes

ROTRONIC’s handheld instruments are extremely precise and feature many practical functions, while being easy-to-use. They are adjusted and configured during production and are ready for immediate use.

In addition, they can be configured for specific applications with user-friendly HW4 or SW21 software or directly on the keypad. A wide range of compatible probes can be easily switched for simple maintenance and calibration.

Humidity and temperature generators

Many customers already use ROTRONIC’s HygroGen humidity generators to calibrate their humidity measuring instruments themselves. The minimisation of instrument downtime and reduction in administrative work for the customer are significant advantages.

Benefits of the HygroGen humidity and temperature generator include:

Generates stable humidity and temperature conditions
Transportable calibration instrument
Humidity equilibrium typically reached in 3 minutes or less
Suitable for the calibration of most relative humidity instruments
Integrated touch-screen PC and USB hub
Ability to connect and calibrate up to five probes simultaneously
Standard external heated sample loop connection
Integrated dryer cell condition monitoring
Digital water level indication
Easy-to-use graphical user interface
Direct certificate printing


ROTRONIC was founded in 1965. The company employs around 360 people and markets its products in more than 40 countries worldwide. With branches and agencies in the US, Germany, the UK, France, Canada, Italy, Singapore, and China, ROTRONIC’s emphasis is on the development and production of industrial measurement devices at the company’s headquarters in Bassersdorf, Switzerland.

Make an enquiry

Press Release

Rotronic to be Acquired by Process Sensing Technologies

Rotronic has announced that it will be acquired by Process Sensing Technologies (PST), a platform owned by global technology-investment firm Battery Ventures.

White Papers

Humidity and Temperature Transmitters

The new HygroFlex5-EX series, which meets international standards, is the latest development in two-channel transmitters for the exact measurement of humidity and temperature in explosive atmospheres.


Grindelstrasse 6

CH-8303 Bassersdorf


+41 44 838 11 11 +41 44 838 14 83


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Press Release

26 August 2017

The new ROTRONIC monitoring system (RMS) checks, documents, and visualises all required measurements and makes them available to the user in the desired form.

Read more
8 August 2017

ROTRONIC has enhanced its temperature measurement device portfolio with its latest handheld TP31 series.

Read more
25 July 2017

ROTRONIC's BF2 series of measurement transmitters, BF220 process pressure transmitter, and the BF227 are available with RS-485 communication.

Read more
16 July 2017

Rotronic has announced that it will be acquired by Process Sensing Technologies (PST), a platform owned by global technology-investment firm Battery Ventures.

Read more
11 July 2017

ROTRIONIC's latest reference generator model in the HygroGen2 has a chamber volume ten times larger than the HygroGen2-S model.

Read more
27 June 2017

Rotronic's cleanroom panel CRP5 is fitted with a diaphragm sensor and validated according to good manufacturing practice (GMP) directives.

Read more
13 June 2017

Due to the value and sensitivity of pharmaceuticals, there are various directives prescribing specific cold-chain conditions that need to be met when they are transported.

Read more
30 May 2017

Rotronic's CRP1 cleanroom panel is a compact and simple-handling device, which is compatible with HygroClip2. The device registers humidity to a high degree of accuracy.

Read more
17 May 2017

ROTRONIC's AwTherm is a high-end and professional laboratory measurement unit for temperature-stabilised water activity in the food, cosmetics, pharmaceutical, and other industries.

Read more
2 December 2016

Rotronic has announced the development of a new Rotronic Monitoring System (RMS), which checks documents and visualises all required measurements and makes them available to the user in a desired form.

Read more
21 November 2016

Rotronic's new CRP5 cleanroom panel is fitted with a diaphragm sensor and validated according to good manufacturing practices (GMP) directives.

Read more
4 November 2016

Rotronic Introduces the CRP1 clean-room panel for the measurement of humidity and temperature in the clean-room

Read more
21 October 2016

For measuring temperature-stabilised water in the pharmaceutical, food, and cosmetics industries, ROTRONIC's AwTherm has a wide control range.

Read more
24 November 2015

The CF1 series is the latest development in CO2 measurement transducers with integrated humidity and temperature measurement.

Read more
17 November 2015

The CRP5 cleanroom panel is an ideal choice when a high degree of cleanliness is vital, in addition to precise measurement of differential pressure, humidity, and temperature.

Read more
20 May 2012

Water activity in perishable foods and pharmaceutical products has a significant influence on their shelf life and storability. Water activity also has a determining influence on the quality of a product, its stability, taste and aroma. Rotronic offers a complete range of water activity products.

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26 February 2012

Rotronic, one of the world's leading manufacturers of measuring equipment for temperature and humidity, is expanding its range of products with CO2 transmitters. This solution is the answer to many requests from customers, who can now choose from completely new measuring parameters.

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21 February 2012

Parameters such as humidity, temperature, air pressure, light and acceleration are of central importance in order to obtain meaningful measurement results for industrial and scientific applications. The new all-in-one LOG-HC2 enables users to measure and save all these parameters simultaneously.

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9 January 2011

The current HygroFlex7 series, based on the new AirChip3000 technology, distinguishes itself not only because of its precise measurement technology but also - thanks to its solid metal housing - defies the most adverse conditions. This measuring instrument is perfectly suited for use in harsh ind

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15 September 2010

Rotronic presents the new issue of its customer magazine 'Humidity News'. The 16-page brochure offers an interesting mix of international application reports and information on the latest products for measuring temperature and humidity. Among other articles, the reader will find a us

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2 September 2010

The measurement of water activity plays a decisive part in the quality inspection of humidity-sensitive products. The free water in a product influences its microbiological, chemical and enzymatic stability, and has a significant influence on the shelf life of the product. Rotronic offers a cased

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The HygroPalm22 is regarded as the perfect hand-held measuring unit for checking climatic parameters. Its usable ranges are 0%rh-100%rh / -10°C-60°C, and all psychrometric calculations are possible. The probe can be changed in seconds, and a mini-USB interface allows connection

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The new humidity and temperature HygroLog HL-20/21 data logger from ROTRONIC expands on the already impressive HygroLog family of products. With the new logger ROTRONIC has launched an economical and compact device on to the market that utilises our latest AirChip 3000 technology and superior Hyg

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The new HF8 humidity and temperature transmitters from Rotronic are ideal for fixed-installation applications requiring high-precision measurements. Based on the new advanced AirChip3000 technology, the HygroFlex8 communicates with all HygroClip2 probe types, which utilise Rotronic's time-tested

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28 February 2010

The new HygroLog HL-NT data logger with HygroClip2 sensors and the AirChip3000 is a powerful system for recording many different physical parameters. The logger also meets all requirements for FDA, CFR Part 11 and GAMP compliance. A wide range of applications The HygroLog

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15 February 2010

The HygroGen is a self-contained transportable humidity and temperature calibrator that enables users and calibration engineers to accurately and rapidly calibrate any type of humidity instrument. The launch of the second generation Airchip3000 based calibrator takes transportable humidity calibr

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Regional Offices

ROTRONIC Instruments (UK) Ltd

Crompton Fields

Crompton Way

West Sussex


RH10 9EE

West Sussex

United Kingdom

+44 1293 571000 +44 1293 571008
ROTRONIC Shanghai Rep. Office

2B, Zao Fong Universe Building

No. 1800 Zhong Shan West Road




Rontronic Instruments Pte Ltd

Inno Centre, 1003 Bukit Merah Central






+65 637 621 07 +65 637 644 39
ROTRONIC Instrument Corp.

Suite 150

135 Engineers Road


NY 11788

New York

United States of America

+1 631 427 3898 +1 631 427 3902
Bureau Suisse Romande


Rue Arrière 4a

2504 Bienne



+41 32 341 80 05 +41 32 341 80 06
Sede Ticino


A Visacc 15

6866 Meride



+41 91 646 28 09 +41 91 646 18 72

Grindelstrasse 6

CH-8303 Bassersdorf


+41 44 838 11 11 +41 44 838 14 83
Rotronic Sarl France

56, Bld. de Courcerin

Croissy Beaubourg




+33 160 95 07 10 +33 160 17 12 56
Rotronic Sarl France

56, Bld. de Courcerin

Croissy Beaubourg




+33 160 95 07 10 +33 160 17 12 56
ROTRONIC Messgeräte GmbH

Einsteinstrasse 17-23





+49 7243 383 250 +49 7243 383 260
ROTRONIC Messgeräte GmbH

Einsteinstrasse 17-23





+49 7243 383 250 +49 7243 383 260
Rontronic Canada Inc

236 Pritchard Rd

Unit 204


L8W 3P7



+1 905 383 5593 +1 905 383 5593
Rotronic Italia SRL

Via Repubblica di San Marino, 1





+39 02 39 00 71 90 +39 02 33 27 62 99

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