SH2615 Thermistor-2025

SH2615 thermistorSystem Composition

(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 division marks of the thermistor and display instrument must be*

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 2mm. 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.

SH2615 thermistorMain technical parameters

Electrical outlet: M20 × 1.5, NPT1/2

Wear resistant head hardness: HRC60-65

Protection level: IP65

Insulation resistance>100M Ω (at room temperature)

Test voltage: 500VDC

Connection size: M27 × 2 NPT3/4

Accuracy level: Level I

Principle of Temperature Measurement

The temperature measurement principle of wear-resistant thermistor is based on the characteristic that the resistance value of a conductor or semiconductor changes with temperature. It also has many advantages, such as remote transmission of electrical signals, high sensitivity, strong stability, good interchangeability and accuracy. However, it requires power excitation and cannot measure temperature changes instantaneously. Different conductors have different electron densities, which result in certain electron diffusion. When they reach a certain equilibrium, the potential formed depends on the material properties of the two different conductors and the temperature at their contact point.

SH2615 Thermistor Types and Performance