Process Sensing Technologies (PST) provides a comprehensive suite of instruments and analyzers for precision measurements in industrial process control, environmental monitoring and food/pharmaceutical processing.

Using our products, customers save millions of dollars each year through increased energy efficiency in their processes and reduced fuel consumption. The quality of food, medicines, semi-conductors and thousands of manufactured goods depends on reliable measurements of critical parameters such as humidity, oxygen, pressure or CO2 during production, storage and transport. Many of our products are GAMP and FDA compliant.

The growing product range includes precision hygrometers and dew-point transmitters to provide trace moisture measurements in both gases and liquids; CO2, pressure and airflow transmitters with digital and analog outputs for easy integration into customers’ control systems; and rugged relative humidity probes and transmitters which enable environmental control in demanding industrial conditions. With its continuous monitoring system, PST offers a flexible cloud based IoT platform to control diverse measuring data from anywhere, at any time.

In the oil and gas sector leading companies rely on our moisture and hydrocarbon dew-point analyzers to ensure the quality of natural gas and refinery products. PST is also a leading provider of oxygen and binary gas analyzers, using zirconia, paramagnetic and electrochemical technologies for applications where process safety, product quality or combustion efficiency are important.

The PST Group has a global presence with multiple locations in Europe, Asia and the Americas and looks for more opportunities to continue its growth through investment into new markets.


Michell Instruments is an international leader in high-precision sensing with 40 years’ experience in the field, specializing in instrumentation for dew point, relative humidity and oxygen analysis. The company serves industries as diverse as petrochemical and pharmaceutical to power generation and food processing.

The product range includes:

  • High-precision chilled-mirror hygrometers and humidity calibration equipment
  • Trace moisture and relative humidity transmitters and sensors for process control
  • Oxygen and binary gas analyzers
  • Process moisture analyzers for the natural gas and petrochemical industries
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Analytical Industries Inc., headquartered in Pomona, California, designs and manufactures innovative solutions for gas analysis, including advanced oxygen sensors and oxygen analyzer platforms.

Their product range includes:

  • Oxygen sensors – for PPM and %O2
  • Oxygen analyzers – for PPB, PPM and %O2
  • Gas analyzers – for H2S, CO, Heliox and Trimix

They supply customers in the industrial control, natural gas, medical and professional sports diving industries.

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Rotronic is an international development and manufacturing company that offers a wide range of products and solutions in the B2B segment. Founded in 1965, the company is headquartered in Switzerland and now has 8 subsidiaries and 42 distributors. Rotronic develops and manufactures solutions for measuring and monitoring relative humidity, temperature, CO2, differential pressure, pressure, flow, dew point, and water activity. Rotronic began the digital transformation 17 years ago and has invested in automated data transfer (machine-to-machine). With the development and launch of its RMS monitoring software, Rotronic further strengthened its position as a key supplier of measurement solutions.

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LDetek designs and manufactures gas chromatography solutions, including highly sensitive detectors; high-performance, patented, stand-alone gas chromatographic systems; compact online analyzers; and accessories for applications in industrial gas, semiconductor, environmental, energy, and food and beverage end markets. LDetek was founded in 2009 and operates from its headquarters in Thetford Mines, Quebec, Canada.

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LDetek, Manufacturer of Gas Analysis Solutions, Joins Battery Ventures’ Process Sensing Technologies Group

Canadian Firm to Operate Alongside Existing Process Sensing Technologies Companies Michell Instruments, Analytical Industries and Rotronic

BOSTON, SAN FRANCSICO AND HERZLIYA, Israel--(June 6, 2018) - Battery Ventures, a global technology investment firm, has reached an agreement for its platform in the process-measurement market, Process Sensing Technologies (PST), to acquire LDetek, a global manufacturer of gas chromatography instruments and online analyzers.

June 6 2018

Battery Ventures’ Process Sensing Technologies Acquires Humidity- and Temperature-Measurement Business Rotronic AG

Swiss Firm to Operate Alongside Existing Process Sensing Technologies Companies Michell Instruments and Analytical Industries

BOSTON, MA--(July 10, 2017) - Battery Ventures, a global technology investment firm, has reached an agreement for its platform in the process-measurement market, Process Sensing Technologies (PST), to acquire Rotronic AG, a global developer and manufacturer of humidity- and temperature-measurement solutions. Rotronic, a family-owned firm based in Switzerland, will join Battery’s existing portfolio of process-measurement and analysis companies.

July 10 2017

Battery Ventures’ Process Sensing Technologies Acquires Analytical Industries Inc., Manufacturer of Oxygen-Analysis Solutions

Company Joins Michell Instruments as Part of Battery’s Process Measurement Platform

Battery Ventures, a global investment firm, has reached an agreement for its platform in the process measurement market, Process Sensing Technologies (PST), to acquire Analytical Industries Inc. (AII), a manufacturer of electrochemical oxygen sensors and gas-analysis products. AII, based in Pomona, CA, will join Battery’s portfolio of process-measurement and analysis companies, including Michell Instruments, which Battery acquired in October 2016.

21 March 2017

Battery Ventures Acquires Michell Instruments Group, A Global Leader in Industrial-Production-Process Measurement & Analysis Technologies

U.K.-Based Group Will Continue to Focus on Growth

17 March 2017