| Customization: | Available |
|---|---|
| After-sales Service: | Remote Guidance |
| Warranty: | 3 Months |
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Pirani vacuum gauge, also known as resistive vacuum gauge, is Mr. Pirani made in 1906. Its working principle is: different degree of vacuum, air molecules per unit volume is different; for being heat resistance wire, to remove heat capacity (heat capacity) is different, temperature resistance wire is different. Because the resistance wire resistivity is a function of temperature, so that different degree of vacuum caused a different resistivity. Different resistance, current voltage drop across the resistor wire is different. According to a change in voltage can be converted from the air pressure, which is measured vacuum. The actual pirani gauge generally made of four-arm bridge, and a resistance wire used for temperature compensation of its series.
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