With the flexible Rotronic Monitoring System (RMS) we offer real-time online-monitoring of particles and other critical parameters for cleanroom applications.  All particle counters can easily be integrated to RMS using either the analogue output or the MODBUS TCP protocol.


A cleanroom is a manufacturing or research environment that is purposely designed to have a very low level of environmental pollutants such as dust, airborne microbes, aerosol particles and chemical vapours. ISO class cleanrooms (defined by ISO 14664-1) have a maximum allowable concentration for particles.

Cleanrooms are used extensively by semiconductor manufacturers and by biotechnology, life sciences, health care, aerospace, data centres and research organisations working with materials and substances that are sensitive to environmental contamination.

Air Particle Measurement:

A light scattering airborne particle counter determines the concentration of particles and is capable of counting and sizing single airborne particles and reporting size data in terms of the equivalent optical diameter. The main sizes monitored are 0.5 µm and 5 µm and are reported as particles/m3 or particles/ft3; the ISO 14664-2 standard specifies a flow rate of 1 cfm for counter particles that are equal or larger than 5 µm. Lighthouse, Particle Measuring Systems, Beckman Coulter and Climet are just a few manufacturers of precision measurement particle counters.

ISO 14664-2 states that continuous environmental monitoring provides significant benefits with a detailed overview of cleanroom performance; alerts and alarms must be defined. The Rotronic monitoring system is a continuous environmental monitoring system that integrates all existing particles counters. The implementation of the Rotronic Monitoring System will help to achieve the ISO 14644-1. Continuous monitoring confirms consistent, high quality environmental conditions with any changes detected as soon as they happen.

The Rotronic Monitoring System Solution
The Rotronic continuous environmental monitoring system (RMS) is a GAMP©5 category 4 software combined with category 1 hardware, helping users monitor their GxP compliant applications, looking into the critical quality attributes and monitoring critical process parameters, focusing on patient safety, product quality and data integrity with compliance to EudraLex Annex 11 and FDA 21 CFR Part 11. RMS is a modular system, particle counters from several manufacturers can be integrated easily enabling measurements to be available on demand for authorised users, on any device, with alerts and alarms configured.

You can find further information on our website:

About Rotronic
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 develops and manufactures solutions for measuring and monitoring relative humidity, temperature, CO2, differential pressure, dew point and water activity. Rotronic began the digital transformation already in the year 2000, investing 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.

Rotronic is a member of the PST Group (Process Sensing Technologies). As a result, our customers benefit from a broader product range and sales network.

Rotronic AG

Grindelstrasse 6

8303 Bassersdorf

Tel. +41 44 838 11 44

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