Technical Support
Wide Range: 0–100Pa to 10kPa low pressure HVAC Differential Pressure Sensor
4-20mA Output: Standard 2-wire industrial signal
High Accuracy: ±1%FS stable performance
Flexible Use Differential / positive / negative pressure
Overview of the HVAC Differential Pressure Sensor
The differential pressure transmitter DR3422 is a high-precision air pressure sensor designed for HVAC systems, cleanrooms, and industrial airflow monitoring. With a sensitive measurement range from Pa to kPa levels, this 4-20mA differential pressure sensor delivers stable and accurate performance for low pressure applications such as filter monitoring, duct pressure control, and room pressure balancing.
Built with a durable aluminum alloy housing and advanced sensing technology, it ensures 1%FS accuracy, fast response, and long-term reliability in demanding environments.
Key Features of the HVAC Differential Pressure Sensor
High Sensitivity for Low Pressure Measurement
Designed for micro differential pressure measurement from 0–100Pa to 10kPa, ideal for airflow and ventilation systems.
Industrial 4-20mA Output (2-Wire)
Standard 4-20mA output signal ensures seamless integration with PLC, BMS, and industrial control systems.
Multi-Mode Pressure Measurement
Supports differential pressure / positive pressure / negative pressure measurement via H & L ports.
High Accuracy & Stability
Delivers ±1%FS accuracy with excellent temperature compensation and long-term stability.
Durable Aluminum Housing
All-aluminum alloy structure provides high strength, corrosion resistance, and industrial reliability.
Easy Installation with Hose Connectors
Equipped with pagoda hose interface (8mm standard) for quick and secure installation.
Technical Specifications of the HVAC Differential Pressure Sensor
| Parameter | Specification |
|---|---|
| Model | DR3422 |
| Type | HVAC Differential Pressure Transmitter |
| Measurement Range | 0–100Pa to 10kPa (multiple options available) |
| Optional Ranges | ±100Pa, ±200Pa, ±1kPa, -5~0kPa etc. |
| Accuracy | ±1% FS |
| Output Signal | 4-20mA (2-wire) |
| Supply Voltage | 12–36VDC (24V typical) |
| Overload Pressure | 300% FS |
| Medium | Air, non-corrosive gas |
| Operating Temperature | -20°C ~ 85°C |
| Compensation Temperature | 0°C ~ 60°C |
| Temperature Drift | ±0.03%FS/°C |
| Pressure Port | Hose barb (8mm standard, optional 6mm/4mm) |
| Housing Material | Aluminum alloy |
Industrial Applications of the HVAC Differential Pressure Sensor
The differential pressure transmitter is widely used in:
HVAC system pressure control
Cleanroom differential pressure monitoring
Air filter clogging detection
Ventilation duct pressure measurement
Fan and airflow control systems
Laboratory and pharmaceutical environments
Building automation systems (BMS)
Industrial air pressure monitoring
Learn more about HVAC pressure monitoring standards from ASHRAE and Differential Pressure.
Reviews
There are no reviews yet.