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Resistance Thermometers

Resistance Thermometers
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Resistance Thermometers

Product catalog summary
Introduction
EPHY-MESS GmbH is a prominent manufacturer of custom sensors, particularly resistance thermometers, with a strong market presence in Germany and exports to over 40 countries. Their products are renowned for precision, innovative engineering, and high-quality standards.
Contact Information
Located in Wiesbaden, Germany, EPHY-MESS can be contacted via phone, fax, or email for inquiries and support.
Quality Assurance and Testing
EPHY-MESS prioritizes continuous improvement and rigorous testing, including temperature, high voltage acceptance, and insulation resistance tests, to ensure compliance with legal and technical standards.
Market and Business Sectors
The company serves sectors such as railway technology, renewable energies, and industrial applications, providing sensors for high-speed trains, wind power plants, and industrial drive technology.
Products and Installation Points
EPHY-MESS offers slot, screw-in, and cable resistance thermometers for applications like brakes, wheel-sets, and control cabinets.
Industrial Temperature Measurement
Platinum resistance thermometers are used for their stability and accuracy, adhering to DIN EN 60751 specifications.
Platinum Measuring Resistors
Available in nominal values of 100 Ω, 200 Ω, 500 Ω, and 1000 Ω, divided into tolerance classes AA, A, B, and C.
Versions of Platinum Measuring Resistors
Includes wire-wound and thin-film technology sensors used in resistance thermometers.
Technical Specifications
Details on construction, measuring range, response time, and critical parameters for various models of resistance thermometers.
Measuring Resistors
  • M-KK: Platinum wire wound around a spindle, measuring range -200°C to +600°C or +800°C, response time ~12 seconds.
  • M-GL: Platinum wire on a glass spindle, measuring range -200°C to +400°C, response time ~23 seconds.
Slot Resistance Thermometers (NWT)
  • Designed for electric motors and generators, available in rigid, flexible, and highly flexible designs.
  • Resistant to mechanical loads and high voltages, available in 3- or 4-wire circuits.
Bifilar Wound Slot Resistance Thermometers
  • Measure temperature over the winding length, customizable for various slot designs, typically designed as Pt100.
General Technical Data
  • Measuring range: -60°C to +200°C.
  • Connection modes: 2-, 3-, or 4-wire circuits.
  • Tolerance classes: A, B (DIN EN 60751).
  • Insulation materials: phlogopit mica, PTFE, FEP, silicone.
  • Dielectric strength: 0.5 kV to 5 kV.
Key Features
  • Flexible designs, patented strain relief, resistance to vacuum impregnation, available in single or double Pt100 versions.
Slot Resistance Thermometers (NWT-FLEX)
Highly flexible, measuring range -60°C to +180°C, available in 2-, 3-, or 4-wire circuits.
Foil Resistance Thermometers
Platinum wire on a polyimide carrier, measuring range -200°C to +200°C, known for flexibility and short response time.
Chip Slot Resistance Thermometers
Platinum thin-film resistor for point measurement, fast response times, available in flexible and rigid versions.
Screw-In Resistance Thermometers
Various housing types, used in industrial applications, available with exchangeable inserts or mineral-insulated protection tubes.
General Features
High flexibility, resistance to mechanical loads, suitable for various industrial applications.
Specifications
  • Temperature Range: -60°C to +600°C.
  • Connection Types: 2-, 3-, or 4-wire circuits.
  • Tolerance Classes: AA, A, B (DIN EN 60751).
  • Protection Tubes: Stainless steel, various diameters and lengths.
  • Dielectric Strength: 0.5 kV to 2.5 kV.
Connection Heads
  • Type B: One or two platinum measuring circuits, replaceable inserts.
  • Type MA: Smaller heads, fixed or replaceable resistors.
  • Type EM: Compact heads, suitable for electric motors and generators.
Features
  • Robust construction, resistance to oils and hydraulic fluids, optional head transmitters.
Applications
Used for temperature control in electric machines, laboratories, hazardous areas, and wind turbines.
Additional Information
Custom solutions available, compliance with standards like DIN EN 60751, DIN EN 61800-5-1, and DIN EN 50178.
Procedures and Guidelines
Installation guidelines emphasize avoiding tension and compression, with special requirements for certified versions.
Research and Development
Focus on developing sensors for harsh environments, aligning with RoHS and REACH standards.
Company Information
EPHY-MESS GmbH collaborates with universities and research institutes to foster innovation.
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Catalog excerpts

Resistance Thermometers-1

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

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Resistance Thermometers-2

░░░░░░░░░░░░░ ➜ 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 more...

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Resistance Thermometers-3

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. Cable...

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Resistance Thermometers-4

░░░░░░░░░░░░░ 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, automated...

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Resistance Thermometers-5

░░░░░░░░░░░░░ 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 from...

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Resistance Thermometers-6

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. Your...

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Resistance Thermometers-7

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“

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Resistance Thermometers-8

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 sensors...

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Resistance Thermometers-9

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 EN...

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Resistance Thermometers-10

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 Lieferprogramm...

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Resistance Thermometers-11

➜ ░░░░░░░░░░░░░░░░░░░░░ 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 response...

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