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Resistance Thermometer Detector (RTD)

Mineral Insulated Metal Sheath Resistance Thermometers

Tempco manufactures Mineral Insulated Metal Sheathed (MIMS) resistance thermometers are particularly vibration resistant, flexible and have short response times. They are manufactured with or without connector and are available in different designs.

As supply mineral insulated cables are used. The lead wires are embedded in a compact isolation of MgO and with a metal jacket of stainless steel: surrounded (material 1.4541). The compact insulation fixed the wires completely, so that there can be neither shock nor by strong bending stress damage. Short circuits between conductors or between conductor and sheath are excluded.

The minimum bend radius is dependent on the diameter of the sheathed cable. As a guideline of 5 ... 7 times shell diameter.
If in special cases, such as at very great lengths to increase the internal conductor resistance with an acceptable level addition, the resistance on the nameplate is noted.
The temperature-sensitive length is typically 35 mm. They can be designed on request longer or shorter.

Special advantages

              • Particularly shockproof
              • Fast response time
              • Very good bending
              • Mechanically insensitive
              • Three-and four-wire circuit from sensing resistor available
              • Cheap Pack extent even over long lengths


              Type WA - MIMS Resistance Thermometer

              Base version of the MIMS resistance thermometer. The standard length of the bare connecting wire ends is 20 mm. The metal sheath is hermetically sealed against moisture. Tmax during potting is 150 °C. The metal sheath diameter of the standard version is constant. Upon request tapered or reinforced versions can be suppliend. Please specify details in case of order


              Type WL - With hard-wired cable

              Type WL - With hard-wired cable

              Form WL has a hard-wired stranded copper cable. The transition sleeve has a diameter of 6 or 8 mm, depending on the type of cable. The standard length is 50 mm.

              Max. temperature at the sleeve: 150 °C, cable type A. The cable type (i.e. conductor cross-section, insulation material, screening) can be chosen from a wide range.

              As a standard wire and cable are TEFLON-insulated with a cross section of 0.38 mm2 . The bare wire ends are tin-coated.

              When ordering please specify the required type.


              Type WLS - With hard-wired cable and jack

              Type WLS - With hard-wired cable and jack

              Form WLS is an extended version of form WL with an additional connector system.

              The standard version is fitted with a jack type LEMO -RLK, size 1, with plated brass precision contacts. The outer body is made of matt chromium-plated brass. Max. temperature at the sleeve: 150 °C, cable type A.

              On joining, plug and jack are automatically interlocked and thus offer an optimum security of contact.

              Other connector systems are available on request as well as the appropriate plugs.

              When ordering please specify the required type.  


              Type WS - With hard-wired jack

              Type WS - With hard-wired jack

              Form WS is an extension of the form WA with an additional connector system. The standard version is fitted with a jack type LEMO - RLK, size 1 (up to 4.8 mm sheath diameter, above that size 2).

              Max. temperature at the sleeve: 150 °C.

              Other connector systems are available on request as well as the appropriate plugs.

              When ordering please specify the required type.


              Type WB ( B - WMM ) - MIMS Thermometer with connection head form B

              This form consists of a measuring insert with connector socket and cable clip, built into a connecting head form B according to German standard DIN 43 729. A special pipe bracket screwing made of stainless steel fixes the measuring insert. The nominal length starts at the bottom edge of the pipe bracket screwing.

              Standard designs

              Metal sheath diameters: see form WMM Connection head form B according to German standard DIN 43 729

              Other heads are available upon request.

              When ordering please indicate the form needed.


              Type W* - RT - MIMS Thermometer with weld-on plate

              This form is used for temperature measurement at pipe surfaces.

              The weld-on plate consists of stainless steel for MIMS RTD´s and is manufactured in accordance with the sheath diameter. The mounting at the pipe surface may be done by welding, soldering, gluing or clamping.

              Max. temperature at the sleeve: 150 °C, cable type A.

              All connection forms on pages 2 and 3 can be supplied with weld-on plate. Other designs for special applications can be supplied upon request. When ordering please specify the required type.


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