Günther Main type_50WMS

50-WMS

Resistance thermometers with metal protection tube

Sensors of this type are used for general temperature measure- ment, mostly in liquid and gaseous media at temperatures up

to 600°C, on rare occasions up to 800°C.  Typeical applications include refrigeration and air conditioning technology, heating, oven and apparatus construction, as well as chemical industry.

Protective fittings in this product line consist of seam welded

or seamlessly drawn metal tubes.  Depending on the applica- tion, GÜNTHER GmbH has over 40 different, partly high-alloyed materials in a large array of measurements in stock.The tips for the Protection tubes are either closed through hot forming or welded shut with a bottom blank.

Tapered measuring tips may be used in this product line in order to shorten the reaction time. For prolonging the holding time, strengthening the wall thickness and utilization of ceramic inner tubing are possible.

All internationally prevalent precision resistors, detachable process connectors (for example mobile flanges or threaded sleeves) and connection heads are used.

Depending on the connection type (2-wire, 3-wire or 4-wire – in turn depending on the required measurement precision and connec- tor length), resistance thermometers consist of 2, 4 or 6 feed lines (inner conductors), surrounded by a thin metallic protective sheath, usually made of high-grade steel.  The inner conductors are firmly press-fitted and insulated in ceramic powder. The precision resistor inside the sensor tip is connected through the inner conductors. The measuring insert in serial-production is fitted with a Pt-100 temperature sensor according to DIN 60751, however versions with Pt-500 or Pt-1000 sensors are possible. The measuring insert is hermetically sealed.

For specialised applications (precision, long-term stability, etc.) we recommend the application of precision resistors with narrowed tolerance.

The resistance values and tolerances of our resistance thermo- meters are according to DIN EN 60751.

Application examples for Resistance thermometers with metal protection tube:

Plant and machine construction

Automobile industry

Chemical industry

Energy production