52-WOS

This series has no extra protection tube and are often used when a fast response time of the sensor is desired. Diameters from 2 mm up to 10 mm are mineral insulated possible. These mineral insulated thermometers allow the use of a compression fitting.

Depending on the connection type (2-wire, 3-wire or 4-wire – in turn depending on the required measurement precision and connector length), resistance thermometers consist of 2, 4 or 6 copper feed lines (inner conductors), surrounded by a thin metallic protective mantle, 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.

As a result of their structure, mineral insulated resistance thermometers have the following advantages:

• Small physical dimensions with maximum flexibility for temperature measurement at sites with difficult accessibility (diameter 1,5 – 6,0 mm)
• Short response time for exact measurements of temperature variations
• Optimal protection for the sensor system against corrosion, oxidation, phyiscal damage and chemical contamination as a result of the enclosed structure
• The enclosed structure also facilitates application of these sensors without additional protective fitting