HVAC Differential Pressure Sensor, HVAC Differential Pressure Transmitter - Accurate Air Pressure Monitoring
What is a Differential Pressure Sensor for Air?
A differential pressure sensor is a precision device used to measure the pressure difference between two points in an air system or duct network.

In HVAC (Heating, Ventilation, and Air Conditioning) applications, an HVAC differential pressure sensor plays a key role in airflow control, filter monitoring, and maintaining stable pressure differentials between critical spaces such as cleanrooms, hospitals, and laboratories.

What is an HVAC Differential Pressure Sensor?
An HVAC differential pressure sensor is specifically engineered to measure pressure differences in ventilation, air-conditioning, and filtration systems.

By providing real-time data on airflow and pressure, it helps facility managers monitor filter conditions, optimize fan performance, and maintain air quality standards in sensitive environments.

How Does an HVAC Differential Pressure Sensor Work?
Each unit has two connection ports:

P1 – High Pressure Port

P2 – Low Pressure Port

The sensor measures ΔP = P1 – P2 and converts this reading into an electrical signal (4–20 mA, 0–10 V, or RS485/Modbus) for integration with a BMS (Building Management System) or industrial controller.

Applications of HVAC Differential Pressure Sensors
Filter Monitoring – Detects clogging and alerts maintenance teams.

Cleanroom Pressure Control – Maintains positive or negative pressure to prevent contamination.

Industrial Ventilation – Monitors airflow rates and fan output.

Commercial & Healthcare Buildings – Ensures stable and comfortable indoor environments.

Key Advantages
High accuracy from a few Pascals up to several kPa.

Reliable, stable output with excellent noise immunity.

Optional alarm functions for over-limit detection.

Long operational life and simple maintenance.

How to Select the Right HVAC Differential Pressure Sensor
Pressure range: Pa, kPa, or bar.

Signal output type: Analog (4–20 mA, 0–10 V) or Digital (Modbus/RS485).

Measurement accuracy: ±0.5% FS or better.

Ingress protection rating: IP54, IP65, or higher.

Recommended brands: ECOSENSE, PRODUAL, HK INSTRUMENTS, BECK.

Sensors Vietnam supplies HVAC differential pressure sensors from trusted global manufacturers, with competitive pricing and full technical support. Contact us today for expert advice and solutions tailored to your project needs.