Custom-made sensor technology. Worldwide. Customer portal Companies Products & Solutions Product overview According to the installation location By branch IECEx & ATEX sensors Technical information Quality & Environment Services Career Press & News Contact Downloads Show product finder Products & Solutions Product overview slot resistance thermometers Bifilar slot resistance thermometers NWTs with a bifilar Pt100 measuring winding enable the temperature to be determined over the entire active length of the measuring winding. By adapting to the respective design of the winding slot of electric motors or generators, an optimal measurement result is guaranteed. advantages low heat capacity to ensure thermal coupling without delay Excellent electrical insulation with good thermal conductivity, taking into account the voltage stress in long-term operation bifilar wire winding prevents induction voltages that lead to measurement errors Characteristic curve of the resistance values Pt100 according to DIN EN 60751 resistant to stresses such as shock, pressure and vibration resistant to common impregnating agents, hardening and drying processes on request with IECEx or ATEX approval for use in potentially explosive areas use The different versions of the bifilar NWTs take into account the requirements of high-voltage machines in particular. The wide range over which the outer dimensions of the NWT can be varied enables it to be adapted to almost any motor size. To compensate for induction voltages caused by external electromagnetic fields, the measuring winding has a bifilar design. Structure / functional principle In the case of bifilar slot resistance thermometers, an insulated measuring wire is wound around a support body to form a bifilar measuring winding. Usually a platinum resistance wire with a nominal value of 100Ω (Pt100) is used for this. Alternatively, copper or nickel can also be used as the measuring wire. Available designs NWT-ST Rigid slot resistance thermometers with mica insulation more NWT-ST / ZS Glasfaser stabilisierte Nutenwiderstandsthermometer mehr NWT-A Abgeschirmte Nutenwiderstandsthermometer mehr NWT-DSH / A Abgeschirmtes Nutenwiderstandsthermometer mit Abschirmgeflecht mehr NWT-SH Flexible Nutenwiderstandsthermometer mehr NWT-FLEX Hochflexible Nutenwiderstandsthermometer mehr NWT-F Folien-Nutenwiderstandsthermometer mehr © 2021 EPHY-MESS GmbH Impressum | AGB | Datenschutz | Sitemap In order to optimize our website for you and to be able to continuously improve it, we use cookies. By continuing to use the website, you consent to the use of cookies. Further information on cookies can be found in our data protection declaration. OK