resistance temperature detectors

        Sheath platinum RTD is a novel temperature sensor. It has the advantages such as slender form,quick heat response, vibration resistance, high voltage with standing, long use life etc. Itforms a complete est with the display instrument. It may test or automatically adjust the temperatures ranging from -200-+600?. It is widely applied in the industrial departments and sci-tech fields such as petroleum, chemical, metallurgy, machinery, electric force, light textile, food, atomic energy, space flight etc. It is esp, fit for mounting in the narrow, bending pipelines or the special occasions with quick reaction or minimization.
        WZ?K serial sheath platinum RTD manufactured by this company absorbs and utilizes the advanced American production techniquess and full set of the testing facilities. As a result, this product conforms with the international Electrician's Committee (IEC) No. 751 publication «Industrial Platinum Thermal Resistance»standard and our new domestic national industry criterion ZBY301-85«The Technical Conditions and Graduation Table of the Industrial Platinum Thermal Resistance»standard. It not only has the characteristics of the common industrial purpose thermal resistance, but also has the merits such as unique & novel structure, somplete variety & specification, high skill, performance and indexes, stable and reliable quality etc. WZ?K Serial sheath platinum RTD may replace for the imported products. They are well received by vast customers. With the same as the ordinary industrial platinum RTD, it forms a complete set with the display instrument etc .It automatically tests or regulates the gas, liquid media or solid surface temperatures within certain use scopes.
              The composition structure of the sheath platinum RTD
        The outer appearances of the sheath platinum RTD are quite different according to their different use requirements. But their basic structures are approximately the same. It is usually composed of the main components such as sheath platinum RTD thermosensitive elements, mounted fixing devices,connection boxes and so on.
          1?Sheath platinum RTD thermosensitive elements:it is a solid substance combined by metal sleeve, unground (commonly the magnesia powder), lead wire, platinum RTD components.
              2?For installing the setting device, its structural form may be divided into non-fixing device, fixed cutting sleeve thread, movable cutting sleeve screw, fixed cutting sleeve flange, fixed compressed flange, flecible compressed flange etc.
              3?Connecting method:its structure may be diveided intonon-connection block type, eay terminal block type, antisplash junction block type, water-proof wire connecting block type, explosion isolating terminal block type, socket type and so on. Principle of action The functional principle of the RTD is to measure the temperature as per the characteristic of the resistance changing in accordance with the substance temperature change. The heated parts of the RTD (thermosensitive elements)is evenly winded by the thin metal wires onto the skeleton which is made of ungroung materials.When the temperature gradient exists in the measured media, the measured temperature is the average temperature amid the dielectrical layer within the thermosensitive element range.
              WZ?K serial sheathed platinum RTD standard ecternal diam.,size, and the sleeve material