Product Description

 Topright Industrial Technology Culture:
Since ***1,Topright have been engaged in the development, design, production and sales in one of the sales of industrial technology company, according to the customer needs, provide tailored solution of design, committed to the electric heating and temperature measurement in the field of development. Topright's products have been exported to Europe, America, Asia,Mid East etc. more than *0 countries.  We supply different heating element for example silicone rubber heater, kapton heater, band heater, cartridge heater, tubular heater, thermocouple and ect. 
 

As for the thermocouple, we split the word: Pt and **0. Pt is the chemical symbol for Platinum, **0 is the resistance in Ohm of the Pt**0 at 0 °C. The resistance changes (fearly linear) with temperature are: 0.**5 Ohm/°C for European and 0.**2 Ohm/°C for American elements. So, by measuring the resistance we can calculate the temperature. Never use a European Pt**0 with an American instrument unless you know that it is set for the right conversion factor (usually called 'alpha'). In english a Pt**0 is also called a RTD element, meaning Resistance Temperature Detector.

An RTD or Pt**0 sensor is connected with two, three or four wires to the measuring device. we learned that we are in fact measuring resistance to determine the temperature. Now when measuring the resistance of the sensing element, we also measure the resistance of the leads and cables used. This gives an error! To compensate for this, the three wire type (bridge) is used, giving enough accuracy in most industrial applications. Even better accuracy is possible with a four wire Pt**0 (laboratory applications). Our Pt**0 panel mounted indicators have an offset compensation when using two wire sensors.

If you want high accuracy, for example better then 0.5°C between 0 and **0°C, go for the Pt**0.