Reliable Differential Pressure Monitoring
The POLWAX DPT20 is a compact and reliable Differential Pressure Transmitter designed for accurate pressure monitoring in HVAC systems, cleanrooms, industrial processes, building automation and other air-pressure applications. With configurable pressure ranges, digital push-button setup, 4–20mA output and optional 0–10V output, the DPT20 provides a practical solution for dependable differential pressure measurement.
Compact Differential Pressure Measurement
The POLWAX DPT20 Differential Pressure Transmitter is designed for accurate and reliable monitoring of pressure differences in HVAC, cleanroom, industrial and building automation applications.
The transmitter supports pressure measurement up to 0–2500 Pa with eight configurable ranges, allowing the instrument to be selected according to the pressure conditions of the application.
The DPT20 provides 4–20mA output, optional 0–10V output and an inbuilt buzzer configuration. A digital push-button interface allows convenient configuration and range selection.
Its compact ABS enclosure, screw-terminal electrical connection, panel-mount construction and 80 mm round cutout make it suitable for straightforward installation in compatible monitoring systems.
DPT20
DPT20 configuration with inbuilt buzzer functionality for pressure monitoring and alarm indication.
Measuring Range: 0–2500 Pa
Supply: 12–24 VDC
DPT20
DPT20 configuration with 4–20mA output for integration with compatible controllers and monitoring systems.
Measuring Range: 0–2500 Pa
Supply: 12–24 VDC
DPT20 Technical Specifications
Complete technical specifications for the POLWAX DPT20 Differential Pressure Transmitter.
| Specification | DPT20 | DPT20 |
|---|---|---|
| Media Compatibility | Air, non combustible, non corrosive gases | |
| Part Code | 0395 3100 | 0395 3101 |
| Alarm / Output | Inbuilt Buzzer | 4–20 mA |
| Measuring Range | 0–2500 Pa | |
| Configurable Ranges |
8 Configurable Ranges
0–25 Pa, 0–50 Pa, 0–100 Pa, 0–250 Pa, 0–500 Pa, 0–1000 Pa, 0–2000 Pa, 0–2500 Pa |
|
|
Accuracy
from Applied Pressure |
Ranges ≤ 0–10 mm Wc: ±1.0% of F.S.
Ranges ≥ 0–25 mm Wc: ±0.5% of F.S. |
|
| Measuring Units | Pa & mmWC | |
| Output Optional | 0–10 V Optional | |
| Supply Voltage | 12–24 VDC | |
| Signal Connection | 3 Wire | |
| Load Resistance | 47 to 470 Ω @ 24 VDC | |
| Operating Temperature | 10°C to 60°C | |
| Storage Temperature | 10°C to 70°C | |
| Over Pressure |
Ranges ≤ 50 mm Wc: 9 PSI
100 to 1000 mm Wc: 19 PSI |
|
| Switch | Digital push button | |
| Enclosure / Color | ABS / White | |
| Protection Class | IP54 | |
| Electrical Connections | Screw terminals | |
| Process Connection | Push-on connection for 3/16” ID tubing | |
| Response Time | 500 ms | |
| Mounting | Panel Mounting | |
| Dimension |
Front View: 86 mm
Side View: 35 mm Back View: 80 mm |
|
| Cutout Size | Round (80 mm) | |
| Scope of Supply | Transmitter, Calibration Certificate, Manual | |
Precision Differential Pressure Measurement
The DPT20 combines flexible pressure ranges, reliable accuracy, fast response and simple configuration for demanding differential pressure monitoring applications.
Differential Pressure
Designed to monitor differential pressure in air and compatible non-combustible, non-corrosive gases across HVAC, cleanroom and industrial applications.
Wide Measurement Range
The DPT20 supports measurement up to 0–2500 Pa with eight configurable pressure ranges for application-specific monitoring.
High Accuracy
Accuracy is specified at ±1.0% of full scale for ranges up to 0–10 mmWC and ±0.5% of full scale for ranges from 0–25 mmWC and above.
Pa & mmWC Units
Pressure measurement can be represented in Pa and mmWC to support different monitoring and engineering requirements.
500 ms Response Time
A 500 ms response time supports responsive pressure monitoring in HVAC and industrial applications.
Digital Configuration
The integrated digital push-button interface provides convenient setup and configuration of the transmitter.
Engineered for Reliable Pressure Monitoring
The POLWAX DPT20 provides a practical combination of measurement accuracy, flexible configuration, compact construction and industrial output options.
High Measurement Accuracy
Provides ±1.0% or ±0.5% full-scale accuracy according to the selected pressure range.
Eight Configurable Ranges
Select from eight pressure ranges from 0–25 Pa through 0–2500 Pa according to application requirements.
4–20mA Output
The 4–20mA configuration provides a standard industrial analog signal for compatible monitoring and control systems.
Optional 0–10V
An optional 0–10V output provides additional flexibility for compatible HVAC and automation systems.
Inbuilt Buzzer
The inbuilt buzzer provides local audible indication for suitable alarm and pressure-monitoring configurations.
Digital Push Button
Simple digital push-button controls make configuration and pressure-range selection convenient.
Compact ABS Enclosure
The white ABS enclosure provides a compact and practical housing for panel-mounted pressure monitoring.
Fast Response
The 500 ms response time enables responsive differential pressure monitoring in suitable applications.
Panel Mount Design
Panel mounting with an 80 mm round cutout supports clean and convenient installation.
Simple Setup. Flexible Integration.
The POLWAX DPT20 is designed for straightforward installation and configuration in differential pressure monitoring systems. Its digital push-button interface allows convenient range selection and setup.
The transmitter supports 4–20mA output with optional 0–10V output, allowing integration with compatible HVAC controllers, building automation systems and industrial monitoring equipment.
- 0–2500 Pa Maximum Measuring Range
- 8 Configurable Pressure Ranges
- 4–20mA Standard Output
- Optional 0–10V Output
- 12–24 VDC Supply Voltage
- 3-Wire Signal Connection
- 47 to 470 Ω Load Resistance @ 24 VDC
- Digital Push-Button Configuration
- Screw Terminal Electrical Connections
- Panel Mounting
Compact Design. Reliable Measurement.
The DPT20 provides accurate differential pressure measurement in a compact panel-mounted enclosure, making it suitable for HVAC, cleanroom, industrial process and building automation applications.
Designed for air and compatible non-combustible, non-corrosive gases with flexible pressure ranges and convenient digital configuration.
Differential Pressure Monitoring Across Industries
The DPT20 is suitable for applications where reliable differential pressure monitoring is important for airflow management, contamination control, equipment performance and process monitoring.
HVAC Systems
Monitor pressure differences across filters, air-handling systems and ventilation equipment to support airflow and system performance.
Clean Rooms
Monitor pressure differentials between controlled areas to help maintain required environmental conditions and contamination control.
Industrial Processes
Monitor pressure differences across filters, ducts and compatible industrial process systems for reliable operation.
Building Automation
Integrate differential pressure measurement into building automation and ventilation monitoring systems.
Pharmaceutical
Support differential pressure monitoring in pharmaceutical production areas, controlled environments and cleanroom facilities.
Air Handling Units
Monitor pressure across filters and air-handling components to support efficient airflow management and maintenance.
Filter Monitoring
Measure pressure drops across filters to help identify increasing resistance and maintenance requirements.
Ventilation Systems
Monitor pressure conditions in ventilation systems to support stable airflow and system control.
Pump & Equipment Monitoring
Support monitoring of pressure conditions around compatible equipment, filters and process systems.
Product Resources
Access the DPT20 technical documentation or contact POLWAX for quotation and technical assistance.
Reliable Differential Pressure Monitoring
The POLWAX DPT20 combines accurate differential pressure measurement, eight configurable pressure ranges, 4–20mA output, optional 0–10V output, digital push-button configuration and compact panel mounting for HVAC, cleanroom, industrial and building automation applications.