Extension lead wire thermocouple and resistance temperature detector_R300 series_R311, R312, R321, R322, R331, R332

Type: R300


Service intended

This type of detector does not use terminal head, rather it directly connects to an indicator or a transmitter. It is very useful where the distance between measuring parts and the location of its head is too far. The measuring parts and its head can be connected by using an extension wire. Extension wire can be selected according to its installation site condition, its protection shape of armored tube, and its wire covering material.


Standard features




Thermocouple : K, E, J, T, N, R, S, B
RTD : Pt 100 Ω at 0℃ (Ceramic and Mica type)


Tolerances on temperature reading


■ Thermocouple
Class 1, Class 2 (DIN/IEC584-2, BS/EN60584-2, JIS C1602)
Special, Standard (ASTM E230 E988 ISA-MC96.1)
■  R.T.D.
Class A : ± (0.15 + 0.002 l t l)
Class B : ± (0.3 + 0.005 l t l)

Sheath outer diameter


■ Thermocouple
1.0, 1.6, 2.3, 3.2, 4.8, 6.4, 8.0, 9.5 and 12.7 mm
* Double element is not available for 1.0 and 1.6 mm sheath outer diameter
■ R.T.D.
3.2, 4.8, 6.4 and 8.0 mm


Sensing element structure


Protection tube or sheathed


Protecting tube outer diameter


6.4, 8.0, 10.0, 12.0 and 15.0 mm


Degree of protection





Download:  CATALOG 

Cảm biến nhiệt (loại K, Pt100) dạng dây R311, R312, R321, R322, R331, R332