When measuring pure and ultra-pure water, the cell constants of the sensors are crucial for getting the best measurement results. When measuring ultra-pure water of optimum quality (below 1 μS/cm), it is essential to use a measuring cell with the cell constant K = 0.01. Cells with K = 0.1 are used in the range 10 μS/cm to a maximum of approximately 500 μS/cm.
The expansion of the JUMO tecLine Lf-VA series (as per Data Sheet 202924) has resulted in the development of two new measuring cells (K = 0.1 and K = 0.01). Shortening the active measurement electrodes allows them to be installed for smaller pipe diameters and lower sample volumes.
The sensor is designed to the hygienic design standards of EHEDG for shape and materials and to ASTM International and Pharmacopoeia Europaea rules as well, which makes it suitable for use in ultra-pure water systems in the pharmaceutical, food and biotechnology industries. It can be used in pure and ultra-pure water systems for technical washing processes (RO systems, ion exchangers).
The wetted parts are made from electro-polished quality stainless steel 1.4435 (316L). Compliance certificates with EN 10204 3.1 and roughness certificates (better than 0.8μm as per Ph. Eur. and ASTM International) are also provided. The seals and plastics used to meet the requirements of the FDA are physiologically safe. For pharmaceutical water systems, the cell constants can be measured and confirmed by an ASTM test certificate. Electrical connection is made via M12 connectors. A Pt1000, Class A, is integrated for temperature acquisition.
The sensor has been fitted with EHEDG-approved JUMO PEKA process connection system. Thanks to modular design, the sensor can be quickly fitted with any process connection the customer requires. A suitable adapter (e.g. clamp, VARIVENT, milk cone, welded adapter) is screwed onto the sensor as a module. For further details, please email Tahsin.Sayman@jumo.net