Resistance Thermometers
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Resistance thermometers Gesellschaft fur Elektro-Physikalische MeBgerate mbH Tailor-made sensors. Worldwide.

░░░░░░░░░░░░░ ➜ Place of location TAILOR-MADE SENSORS 01. E P H Y- M E S S S E N S O R S ADD EFFICIENCY AND SAFETY TO YOUR SYSTEM Globality and loyalty to location EPHY-MESS GmbH is a competent solution partner of all manufacturers of electrical machines and drive technology. As a medium-sized family owned company, we consult, develop and produce for our customers individual sensor solutions for safety and control requirements. As a premium manufacturer and distributor of tailor-made industrial measurement and sensor technology, the company has taken a leading position in Germany in its...

Content CERT Page Tailor-made sensors 01. Globality and loyalty to location 03 certificates, trade associations 03. Content 05 Quality and precision 07. Products and points of installation 12 10. Versions of platinum measuring resistors 18 11. Slot resistance thermometers NWT 22 03. CONTENT Page 12. Slot resistance thermometers NWT bifilar 24 13. Slot resistance thermometers NWT chip 34 14. Screw-in resistance thermometers LTH 40 15. Connection heads according to DIN EN 50446 42 17. Industrial plug resistance thermometers 50 18....

░░░░░░░░░░░░░ Test facilities ➜ 04. TEST AND MEASUREMENT Quality Assurance Routine testing Our quality assurance monitors compliance with legal requirements (standards) and technical specifications. At EPHY-MESS each article undergoes tests to control e.g. dimension, tension, pressure, tightness, functionality, insulation and dielectric strength at the final inspection section of the quality department. In addition in the course of its compliance with standards, each sensor has to fulfill an optical inspection as well as in some cases additionally mechanical testing. The system-optimized,...

░░░░░░░░░░░░░ Market sectors ➜ 05. OUR MARKET SECTORS Market sectors EPHY-MESS supplies assembled temperature sensors especially for the focused market segments railway technology, renewable energies and the general industrial segment. Following find an overview of the products we offer for your industry. Each measuring task is carried out under specific operating conditions. Each temperature sensor has a specific mounting situation. EPHY-MESS offers users of any sector and of different industries specific temperature sensors matching the specifications of the application. Customers benefit...

EPHY-MESS keeps fit rolling stock Particularly the sensors in high-speed trains must work with absolute reliability under diverse operating conditions. EPHY-MESS temperature sensors, speed sensors and oil level gauges meet these requirements and have proven themselves in world-renowned international train projects. Forces created by shocks require that the sensor elements possess a special internal structure to ensure the continuous capture of reliable measuring values. Over the years EPHY-MESS has gained valuable experience and a thorough knowledge of this technologically demanding field....

12 | Resistance thermometers EPHY-MESS GmbH Coil head „Schrift“ > „Sonderzeichen einfügen“ > „Marken“ > „Aktuelle Seitenzahl“ Pitch / Azimuth drive Control cabinet EPHY-MESS GmbH Resistance thermometers | 13 „Schrift“ > „Sonderzeichen einfügen“ > „Marken“ > „Aktuelle Seitenzahl“

Since 1871 platinum resistance thermometers have been used for industrial temperature measurement. Due to its chemical resistance and homogeneity, platinum has been established as basic material for industrial temperature measurement besides copper, nickel and silicon. The material guarantees long-term stability, high measuring accuracy and reproducible electrical properties and measured values. Platinum measuring elements According to DIN EN 60751, the nominal value is 100 Ω at a nominal temperature of 0°C. We therefore speak of Pt100 temperature sensors. In addition, there are temperature...

The following values and equations apply The standard DIN EN 60751 defines two temperature ranges for platinum resistors and defines them by means of different polynomials. The first temperature range (-200°C to 0°C) is defined by R(t) = R(0) (1 + A t + B t2 + C (t - 100°C) t3) The second temperature range (0°C to 850°C) by Basicmeasuringresistors R(t) = R(0) (1 + A t + B t2) Permissible limit deviation for class AA in °C = ±(0,10+0,0017 |t|) Connection diagram for platinum resistance thermometers. Color coding of platinum resistance thermometers is standardized according to DIN...

10. V E R S I O N S O F P L AT I N U M M E A S URING RESISTORS Wire-wound platinum temperature sensors as well as platinum chip sensors manufactured in thin-film technology are installed as temperature-sensitive detectors inside the resistance thermometers. In the following five common basic measuring resistors available from EPHY-MESS are being described. These platinum measuring resistors are assembled in various thermometer designs to meet different application requirements. 18 | Resistance thermometers EPHY-MESS GmbH „Schrift“ > „SonderzeichenEPHY-MESS GmbH > „Aktuelle Seitenzahl“ 16...

➜ ░░░░░░░░░░░░░░░░░░░░░ Basic measuring resistors Characteristic curves of resistors and semiconductors 14000 Platinum wire wound around a spindle, insulated with ceramics; cylindrical shape, round sensor tip measuring range contact wires Pt clad Ni-wire, length approx. 10 mm - 20 mm measuring range ø from about 0.8 mm, length depending on diameter contact wires Pt clad Ni-wire, length approx. 10 mm - 15 mm ø from about 1.3 mm, length depending on diameter response time from about 12 s, according to dimensions air stream (v = 2 m/s): t0,9 = 12.0 s from about 23 s, according to dimensions...

In general Depending on the design, a distinction is made between slot resistance thermometers (NWT) with bifilar winding (carrier body with applied platinum wire winding) and chip slot resistance thermometers (with built-in thin-film measuring resistor). Depending on the application, the versions are designed as rigid, flexible or as highly flexible slot resistance thermometers. To ensure safe operation and a long service life, electrical machines must be protected against permanent thermal overload. Protective systems based on thermometers, such as slot resistance thermometers and the...