Principle sharing of high-temperature physical property tester
Release time:
2022-08-19
High-Temperature Material Property Tester It is a temperature measuring instrument. Depending on the actual temperature measurement technology, materials, and temperature range, there are kerosene, alcohol, gas, resistance, thermocouple, radiation electronic, optical, bimetallic, etc., suitable for the determination of high-temperature and normal-temperature comprehensive performance of inorganic metal materials, and also suitable for mold mixture high-temperature performance tests simulating the actual situation of liquid metal pouring into molds.
The principle of the high-temperature material property tester is to utilize the technical characteristics of the resistance of different conductors or semiconductors changing with the environment. The main advantages of thermistors are: high accuracy, good reproducibility; wide range, especially at low temperatures; easy for automatic and remote measurement.
These raw materials are mainly used because the ratio to resistance is linear within the normal regulations. This article mainly introduces platinum thermometers. Platinum is a precious metal. Its physicists have relatively stable chemical and technical properties, especially strong antioxidant capacity. Easy to purify, good processability. It can be made into very fine platinum. Compared with copper and nickel, it has good reproducibility and is an ideal heat-resistant material. Its disadvantages are small resistance coefficient, fragile in reducing medium during operation, and high price.
The thermistors used in the field are generally armored thermistors, which consist of a thermistor, insulating structural materials, and a protective tube. The thermistor and the protective tube are welded together, and the insulation material is filled in the middle, so that the thermistor is well protected and has the properties of impact resistance, shock resistance, and corrosion resistance.
I. Technical Parameters of High-Temperature Material Property Tester
1. Temperature measurement principle: Thermistor method (10Kω25℃), range -6～+46. Resolution 0.1. Accuracy ±0.3±1min.
2. Dissolved oxygen (% air saturation): Working principle and steady-state polarographic method (PE film); research regulation value 0~200%; resolution 0.1% air saturation; accuracy has a reading of ±2% or ±2% air relative saturation, taking the larger numerical data as the standard.
Dissolved oxygen (mg/L): Steady-state polarographic method (PE coating), range 0～20ppm (mg/L); resolution 0.01PPM (mg/l); accuracy reading ±2% or ±0.2mg/l, taking the larger value.
II. Characteristics of High-Temperature Material Property Tester
1. The waterproof shell adopts IP65 waterproof technology level system design.
2. Stainless steel probe, plus plastic protective cover, sturdy, economical, durable, and easier to sink into the water.
3. The cable interface is equipped with a stress reliever to reduce fatigue at the network wiring point and effectively extend the cable life.
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