Common temperature instruments include armored thermocouples.

Armored thermocouple: measures high temperatures above 500 ℃, the temperature of the main steam in thermal power plants, the temperature of the superheated pipe wall, and the temperature of high-temperature flue gas. Features: capable of measuring high temperatures, stable performance, accurate and reliable, simple structure, easy maintenance, convenient signal transmission and multi-point switching measurement. Main models: Division number: S or LB-3, with an upper limit of 1300 ℃ (short-term 1600 ℃). B or LL-2 upper limit 1600 ℃ (short-term 1800 ℃) K or EU-2 upper limit 1200 ℃ (short-term 1300 ℃) T or CK upper limit -200~350 ℃ (short-term 400 ℃) E or EA-2 upper limit -200~900 ℃ Thermistor: high measurement accuracy, stable performance, high sensitivity, wide application range, remote inquiry, automatic temperature control and recording. Platinum thermistor, maximum temperature measurement 650 ℃, Pt50,Pt100, Copper resistance: 50-150 ℃ Cu50, Cu100. Attention: Error caused by self heating effect, Pt working current less than 6mA, hysteresis effect, large heat capacity, sufficient heat exchange, accurate measurement. Installation: During installation, form a reverse flow with the measured medium at least 90 degrees

Division number: S or LB-3 upper limit 1300 ℃ (short-term 1600 ℃). B or LL-2 upper limit 1600 ℃ (short-term 1800 ℃) K or EU-2 upper limit 1200 ℃ (short-term 1300 ℃) T or CK upper limit -200~350 ℃ (short-term 400 ℃) E or EA-2 upper limit -200~900 ℃: High measurement accuracy, stable performance, high sensitivity, wide application range, remote inquiry, automatic temperature control and recording. Platinum, maximum temperature measurement 650 ℃, Pt50,Pt100, Copper resistance: