HVAC Metering Devices Practice Test 2025 – Complete Exam Prep

Question: 1 / 400

What type of sensor is typically used to measure duct pressure in HVAC applications?

Thermocouples

Resistive pressure sensors

Capacitive pressure sensors

In HVAC applications, capacitive pressure sensors are often chosen for measuring duct pressure due to their sensitivity, wide range, and reliability. These sensors work by using a diaphragm to determine pressure changes based on the capacitance variations caused by the diaphragm's deflection as pressure is applied. This allows them to provide precise measurements of both low and high pressures, which is essential for monitoring and controlling HVAC systems effectively.

Capacitive pressure sensors also have a quick response time, making them ideal for applications where accurate and timely pressure readings are crucial. Their durability and ability to operate in various environmental conditions further enhance their suitability for use in duct systems, where they can be subjected to changes in temperature and humidity.

Overall, the use of capacitive pressure sensors in HVAC applications provides accurate monitoring of duct pressure, ensuring efficient operation and optimal performance of heating, ventilation, and air conditioning systems.

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Magnetostrictive sensors

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