Advanced Differential Pressure Monitoring
The POLWAX DPT30 is a high-performance Differential Pressure Transmitter designed for precise and reliable pressure monitoring in HVAC systems, cleanrooms, industrial processes and building automation. With up to 10 configurable pressure ranges, ALARM functionality, 4–20mA, RS485 MODBUS RTU and relay output configurations, the DPT30 provides flexible integration for demanding monitoring applications.
Advanced Differential Pressure Measurement
The POLWAX DPT30 Differential Pressure Transmitter is engineered for precise and dependable differential pressure monitoring across HVAC, cleanroom, industrial process and building automation applications.
The DPT30 supports measurement up to 0–7000 Pa with ten configurable pressure ranges, providing flexibility for both low-pressure and higher-pressure monitoring requirements.
Multiple output and communication configurations are available, including ALARM with 4–20mA, ALARM with RS485 MODBUS RTU, ALARM with 4–20mA and RS485 MODBUS RTU, and a configuration combining 4–20mA, RS485 MODBUS RTU and 24V DC relay.
The compact ABS enclosure, digital push-button interface, screw-terminal connection and panel-mount design provide convenient installation and operation in compatible pressure monitoring systems.
DPT30
DPT30 configuration with ALARM and 4–20mA output for pressure monitoring and industrial analog integration.
Measuring Range: 0–7000 Pa
Supply: 12–24 VDC
DPT30
DPT30 configuration with ALARM and RS485 MODBUS RTU communication for digital system integration.
Measuring Range: 0–7000 Pa
Supply: 12–24 VDC
DPT30
DPT30 configuration combining ALARM, 4–20mA and RS485 MODBUS RTU for flexible analog and digital integration.
Measuring Range: 0–7000 Pa
Supply: 12–24 VDC
DPT30
DPT30 configuration with ALARM, 4–20mA, RS485 MODBUS RTU and 24V DC relay for expanded control and monitoring.
Measuring Range: 0–7000 Pa
Supply: 12–24 VDC
DPT30 Technical Specifications
Complete technical specifications for the POLWAX DPT30 Differential Pressure Transmitter and its four available configurations.
| Specification |
DPT30 0395 3200 |
DPT30 0395 3211 |
DPT30 0395 3221 |
DPT30 0395 3231 |
|---|---|---|---|---|
| Media Compatibility | Air, non combustible, non corrosive gases | |||
| Alarm / Output |
ALARM, 4–20mA |
ALARM, RS485 MODBUS RTU |
ALARM, 4–20mA & RS485 MODBUS RTU |
ALARM, 4–20mA, RS485 MODBUS RTU, 24V DC Relay |
| Measuring Range | 0–7000 Pa | |||
| Configurable Ranges |
10 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, 0–5000 Pa, 0–7000 Pa |
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|
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 |
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| Switch | Digital push button | |||
| Enclosure / Color | ABS / Black | |||
| 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) | |||
| Language | English | |||
| Certification | CE, RoHS, EN12830 | |||
| Scope of Supply | Transmitter, Calibration Certificate, Manual | |||
Precision Differential Pressure Measurement
The DPT30 combines flexible pressure ranges, reliable accuracy, fast response, alarm functionality and multiple communication options for demanding differential pressure monitoring applications.
Differential Pressure
Designed for differential pressure monitoring in air and compatible non-combustible, non-corrosive gases across HVAC, cleanroom and industrial applications.
Wide Measurement Range
The DPT30 supports measurement up to 0–7000 Pa with ten configurable ranges for application-specific pressure 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 is available in Pa and mmWC to support different monitoring, engineering and HVAC requirements.
500 ms Response Time
The 500 ms response time supports responsive differential pressure monitoring and timely pressure-change detection.
Digital Configuration
The integrated digital push-button interface provides convenient setup and pressure-range configuration.
Engineered for Advanced Pressure Monitoring
The POLWAX DPT30 provides a practical combination of accuracy, configurable pressure ranges, alarm functionality, communication flexibility and compact panel-mounted construction.
High Measurement Accuracy
Provides ±1.0% or ±0.5% full-scale accuracy according to the selected pressure range.
Ten Configurable Ranges
Select from ten pressure ranges from 0–25 Pa through 0–7000 Pa according to application requirements.
4–20mA Output
The 4–20mA configuration provides a standard industrial analog signal for compatible monitoring and control systems.
RS485 MODBUS RTU
RS485 MODBUS RTU communication supports digital integration with compatible automation and monitoring systems.
ALARM Functionality
ALARM functionality provides an additional pressure-monitoring and indication option for suitable system configurations.
24V DC Relay Option
The 0395 3231 configuration adds a 24V DC relay alongside 4–20mA and RS485 MODBUS RTU.
Compact ABS Enclosure
The black ABS enclosure provides a compact and practical housing for panel-mounted differential pressure monitoring.
Fast Response
The 500 ms response time supports responsive monitoring of changing differential pressure conditions.
Panel Mount Design
Panel mounting with an 80 mm round cutout supports clean and convenient installation.
Flexible Setup. Advanced Integration.
The POLWAX DPT30 is designed for straightforward installation and flexible configuration in differential pressure monitoring systems. Its digital push-button interface provides convenient pressure-range selection and setup.
Multiple output configurations allow the DPT30 to integrate with analog controllers, digital automation networks and selected relay-based control systems.
- 0–7000 Pa Maximum Measuring Range
- 10 Configurable Pressure Ranges
- 4–20mA Output
- RS485 MODBUS RTU Communication
- Optional 0–10V Output
- ALARM Functionality
- 24V DC Relay in Selected Configuration
- 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
Advanced Connectivity. Reliable Measurement.
The DPT30 combines accurate differential pressure measurement with configurable ranges, ALARM functionality and multiple communication/output options for modern HVAC, cleanroom, industrial and building automation systems.
Designed for air and compatible non-combustible, non-corrosive gases with flexible pressure ranges and convenient digital push-button configuration.
Differential Pressure Monitoring Across Industries
The DPT30 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 using compatible outputs.
Pharmaceutical
Support differential pressure monitoring in pharmaceutical production areas, controlled environments and cleanroom facilities.
Filter Monitoring
Measure pressure drop 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.
Smart Buildings
Use differential pressure data within building automation and smart ventilation systems for improved monitoring and control.
Product Resources
Access the DPT30 technical documentation or contact POLWAX for quotation and technical assistance.
Reliable Differential Pressure Monitoring
The POLWAX DPT30 combines high-accuracy differential pressure measurement, ten configurable pressure ranges, ALARM functionality, 4–20mA output, RS485 MODBUS RTU, optional 0–10V output and selected relay functionality for HVAC, cleanroom, industrial and building automation applications.