(1) A thermistor temperature measurement system generally consists of a thermistor, connecting wires, and a display instrument. The following two points must be noted:

① The scale marks of the thermistor and display instrument must be consistent

② In order to eliminate the influence of changes in the resistance of the connecting wires, a three wire connection method must be adopted. Please refer to Chapter 3 of this article for specific content.

(2) Armored thermal resistance is a solid body composed of temperature sensing elements (resistors), leads, insulation materials, and stainless steel sleeves. Its outer diameter is generally between 1 and 8mm, and can be as small as 8mm. Compared with ordinary thermistors, it has the following advantages:

① Small size, no air gap inside, low measurement lag in terms of thermal inertia;

② Good mechanical performance, vibration resistance, and impact resistance;

③ Can bend, easy to install

④ Long service life.

(3) The end face thermistor temperature sensing element is made of specially processed resistance wire wound tightly against the end face of the thermometer. Compared with general axial resistance thermometers, it can more accurately and quickly reflect the actual temperature of the measured end face, and is suitable for measuring the end face temperature of bearing shells and other components.

(4) The explosion-proof type thermal electric barrier type thermal resistor uses a special structure junction box to remove the explosive mixed gas inside its shell. If the resistor is damaged by sparks or arcs, the length of the resistance wire must be changed, which will affect the resistance value. Therefore, it is better to replace the resistor with a new one. If welding repair is used, it must be verified to be qualified after welding before use.