The Optidew series of Michell instruments has completed a technical upgrade for humidity measurement of 401/501 models

On November 13, 2025, Beijing, Michell Instruments, a provider of humidity measurement solutions, officially announced today that its classic cold mirror dew point meter Optidew Vision model has completed its product lifecycle upgrade, and its iterative upgrade products Optidew 401 desktop dew point meter and Optidew 501 portable dew point meter have been launched simultaneously. This upgrade retains the high-precision measurement genes of the original series and focuses on operational experience, data management, and application scenariosOptimization will bring a more efficient humidity measurement experience to fields such as industrial manufacturing, laboratory calibration, and environmental monitoring.

As a field of humidity measurementThe Optidew series, with its inherent advantage of cold mirror measurement technology, has always been trusted by global users for its "traceability level accuracy". With the acceleration of the Industry 4.0 process and the refined development of laboratory calibration requirements, users have put forward higher requirements for the convenience of instrument operation, data traceability, and environmental adaptability. After two years of technical research and development, the R&D team of Michell Instruments has not only inherited the core principle of cold mirror measurement, but also completed a deep innovation from hardware configuration to software system.

According to Zhang Gong, the Product Director of Micier Instruments China, the two upgraded models launched this time have their own focuses and accurately match the needs of different scenarios. The Optidew 401 desktop dew point meter is equipped with a 7-inch high-definition capacitive touch screen, and the operation interface adopts a modular design, which allows novice users to quickly get started; The instrument has a built-in 16GB storage space and supports USB 3.0 and SD card dual interface data export. It can automatically record 100000 measurement data, meeting the data traceability requirements under the ISO 9001 quality system. It is particularly suitable for establishing transmission standards for metrology and testing institutions, third-party calibration laboratories, and humidity calibration work in the electronic and semiconductor industries.

The Optidew 501 portable dew point meter features "high maneuverability+strong environmental adaptability" as its core highlight, with a body weight of only 1.8kg, equipped with a large capacity lithium battery, and can work continuously for more than 12 hours on a single charge. This model has added temperature and humidity compensation function, which can maintain a dew point measurement accuracy of ± 0.1 ℃ in a wide temperature range of -40 ℃ to+60 ℃, making it an ideal choice for mobile measurement scenarios such as petrochemicals, natural gas transportation, and outdoor environmental monitoring. In response to the complex working conditions in industrial sites, we have also equipped the 501 model with anti vibration enclosures and waterproof interfaces to ensure measurement stability in harsh environments.

Mark Hodgson, Global CEO of Michell Instruments, stated that the accuracy of humidity measurement is directly related to product quality and process safety. The upgrade of the Optidew series is another practice of Michell's' technology innovation drives industry progress' philosophy. In the future, we will continue to focus on the technical pain points in the field of industrial measurement, launch more customized solutions that meet the needs of the Chinese market, and help China's manufacturing industry move towards high-quality development. ”