Pvc Material Thermal Resistance

Introduction

Pvc Material Thermal Resistance is one of the most commonly used temperature detectors in medium and low-temperature regions. Thermal resistance thermometry is based on the characteristic that the resistance value of metal conductors increases with temperature. Its main features are high measurement accuracy and stable performance. Among them, platinum thermal resistance has the highest measurement accuracy. It is not only widely used in industrial temperature measurement, but also made into a standard benchmark.

Thermal resistors are mostly made of pure metal materials, and platinum and copper are the most widely used. In addition, nickel, manganese, and rhodium have begun to be used to manufacture thermal resistors. There are many types of temperature-sensing materials commonly used in metal thermal resistors, and platinum wire is the most commonly used. In addition to platinum wire, metal thermal resistance materials for industrial measurement include copper, nickel, iron, iron-nickel, etc.

Working principle

The principle of temperature measurement of Pvc Material Thermal Resistance is to measure temperature and temperature-related parameters based on the characteristic that the resistance value of the conductor or semiconductor changes with temperature. The thermal resistance usually needs to transmit the resistance signal to the computer control device or other secondary instruments through the lead wire.

Features

1. Pressure spring type temperature sensing element with good anti-vibration performance;

2. High-temperature measurement accuracy;

3. High mechanical strength, high temperature, and pressure resistance;

4. Imported thin film resistance elements, reliable and stable performance.

Compared with thermocouples, thermal resistance has the following characteristics:

1. The output signal is larger at the same temperature, which is easy to measure.

2. The resistance must be measured with the help of an external power supply.

3. The size of the temperature sensing part of the thermal resistance is large, and the working end of the thermocouple is a small solder joint, so the response speed of the thermal resistance temperature measurement is slower than that of the thermocouple;

4. The thermal resistance made of the same material is not as high as the upper limit of the temperature measurement of the thermocouple.

Installation requirements

For the installation of Pvc Material Thermal Resistance, it should be noted that it is conducive to accurate temperature measurement, safety and reliability, and convenient maintenance, and does not affect equipment operation and production operations. To meet the above requirements, pay attention to the following points when selecting the installation location and insertion depth of the thermal resistance:

1. In order to have sufficient heat exchange between the measuring end of the thermal resistance and the measured medium, the location of the measuring point should be selected reasonably, and the thermal resistance should be avoided as far as possible near the dead ends of valves, elbows, pipes, and equipment.

2. The thermal resistance with a protective sleeve has heat transfer and heat dissipation losses. In order to reduce the measurement error, the thermocouple and thermal resistance should have sufficient insertion depth.

Certificate

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Delivery

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