Question

Pressure measurement is done by _________________ , by measuring heat loss from a heated wire.

• A. a Pirani gauge
• B. an orifice meter
• C. a manometer
• D. a barometer

Answer 1

Answer:

A. a Pirani gauge

Pressure measurement is done by measuring heat loss from a heated wire, which is done by a Pirani gauge. This gauge measures the vacuum pressure-dependent thermal conductivity from the heated wire to the surrounding gas.