This differential pressure transmitter measures low air-pressure differences in HVAC and ventilation systems. It can be used to monitor duct pressure, airflow conditions, filter blockage and pressure differences between indoor areas.
The transmitter uses a MEMS differential-pressure sensing element and supports common building-control outputs, including 4–20 mA, 0–10 V and RS485. Pressure range, output signal, wiring and installation configuration can be selected according to the HVAC system.
key Features
Low Differential Pressure Measurement
Designed to measure small air-pressure differences in ventilation ducts, filters and controlled indoor environments.
Multiple Output Options
Available with 4–20 mA, 0–10 V or RS485 output for connection to controllers, PLCs and building management systems.
Fast Pressure Response
Response time of up to 1 second supports timely monitoring of changing airflow and duct-pressure conditions.
Compact HVAC Installation
The round enclosure and pressure ports support installation in air-handling units, ventilation equipment and duct systems.
Custom Configuration
Pressure range, output, power supply, wiring method, housing and connection options can be matched to the application.
Product Specifications
| Parameter | Available Specification |
|---|
| Sensing Component | MEMS differential-pressure sensing element |
| Measured Medium | Air and compatible non-corrosive gases |
| Pressure Range | Selectable according to application |
| Accuracy | ±1.0% FS typical |
| Response Time | ≤1 second |
| Output | 4–20 mA / 0–10 V / RS485 |
| Power Supply | 12–24 V DC |
| Working Temperature | −10°C to +50°C |
| Wiring | 2-wire / 3-wire / 4-wire, depending on output |
| Long-Term Drift | ≤±0.5% FS/year |
| Pressure Connection | Dual air-pressure ports |
| Housing Dimensions | Available on request |
| Installation | Equipment or wall mounting |
| Customization | Pressure range, output and wiring |
Typical Applications
HVAC Airflow Monitoring
Measures pressure differences related to airflow in ventilation and air-conditioning systems.
Air Filter Monitoring
Detects pressure changes across filters to help identify loading or blockage.
Air Handling Units
Provides differential-pressure feedback for AHU operation and airflow control.
Fresh-Air Systems
Supports air-pressure monitoring in residential and commercial fresh-air equipment.
Duct Pressure Control
Measures duct pressure for fan control and ventilation-system adjustment.
Clean Rooms
Monitors pressure differences between rooms or controlled areas.
Building Automation
Connects to BMS controllers through analog or RS485 output for centralized monitoring.
