Description
WRE-320 WRE-321 WRE-322 WRE-323 WRE-243 assembly thermocouple
Product introduction:
WRE-320 WRE-321 WRE-322 WRE-323 WRE-243 assembly thermocouple, metal bodies have a certain resistance, and the resistance value varies depending on the type of metal. The same material, the thinner or thinner the greater the resistance value. When external force is applied, if the metal becomes thinner and longer, the resistance value increases; if it becomes thicker and shorter, the resistance value decreases. If a metal resistor is installed on a strained object, when the object expands and contracts, the metal body also expands and contracts according to a certain ratio, so the resistance value changes accordingly.
Metal bodies have a certain resistance, and the resistance value varies depending on the type of metal. The same material, the thinner or thinner the greater the resistance value. When external force is applied, if the metal becomes thinner and longer, the resistance value increases; if it becomes thicker and shorter, the resistance value decreases. If a metal resistor is installed on a strained object, when the object expands and contracts, the metal body also expands and contracts according to a certain ratio, so the resistance value changes accordingly.
Benefits:
1. Simple structure, small size, light weight, low price and stable performance;
2. It is less affected by environmental factors (such as temperature, humidity, electromagnetic field interference, etc.);
3. A variety of functional relationships between output and input can be realized;
4. The output signal is large, and generally does not need to be amplified.
Disadvantages:
1. There is friction between the brush and the coil or resistance film, which requires a large input energy;
2. Abrasion affects service life and reduces reliability, and will reduce measurement accuracy and lower resolution;
3. Poor dynamic response, suitable for measuring slower changes.
