Temperature sensor PT100 thermal resistance RTD with diamter 1.5mm
 
composition 
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 fixed 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 poweder),lead wire,platinum RTD components.
2. For installing the setting device, its structural form may be divided into non-fixing device, fixed cutting sleeve flange, fixed compressed flange, flexible compressed flange etc.
3. Connecting method: its structure may be divided into non-connection block type,easy terminal block type, anti-splash junction block type , water-proof wire connecting block type, explosion isolating terminal block type, socket type and so on.

Working Principle:
Thermocouple is composed of temperature sensor and signal converter, signal converter is installed in the junction box of temperature sensor, temperature sensor produce resistance or potential effects made by the temperature affect, via transformation to create a differential voltage signal. The signal via the amplifier amplification, then through voltage and current transformation, output 4-20 mA current signal corresponding to the range.
 
Measuring Range and Accuracy: