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Differential Pressure Transmitter
Polwax DPT30
Part Code. 0395
- High Accuracy Measurement
- Easy to Install and suitable for Panel Mounting
- Easy to configured via keys
- Compact and Durable Design
- User-Friendly Configuration
- Ruggedized Enclosure
Superior Performance With its unmatched accuracy, durability, and connection, the DPT30 elevates monitoring to a new level. It is designed for sectors that require dependable performance in demanding settings and real-time data integration.
Because of its precision and versatility, the Polwax DPT30 Differential Pressure Transmitter is perfect for monitoring and controlling differential pressure in a variety of applications. This transmitter improves system safety and operational efficiency with an integrated display and ALARM capability. Its panel-mounted design makes installation easy, and its adjustable ranges and selected units provide flexibility. The DPT30 improves operating efficiency in areas like filter monitoring and is designed for applications that require optimal pressure monitoring.
Product Overview
The Polwax DPT30 is an advanced differential pressure transmitter engineered for precise, reliable, and real-time pressure monitoring in a wide range of industrial, commercial, and building automation applications. Designed with modern sensor technology and robust construction, it ensures consistent performance even in demanding environments.
Built for versatility, the DPT30 supports a wide measurement range (up to 0–700 mmWC) with excellent accuracy and integrated temperature compensation for stable readings under fluctuating conditions. Its compact, IP65-rated enclosure offers durability against dust and moisture, making it suitable for HVAC systems, cleanrooms, industrial processes, and smart ventilation installations.
The transmitter features multiple output options (standard 4–20 mA, optional 0–10 V, RS485 Modbus RTU, and relay), enabling seamless integration with automation and building management systems. A user-friendly digital push-button interface simplifies configuration, while an integrated buzzer/alarm enhances operational safety by alerting users to critical pressure conditions.
With its combination of accuracy, durability, and connectivity, the Polwax DPT30 is ideal for precision differential pressure management across HVAC, industrial, pharmaceutical, and environmental control applications.
In demanding industrial and environmental applications, the Polwax DPT30 Differential Pressure Transmitter is designed for accuracy and performance. It is perfect for maintaining proper pressure in HVAC systems, cleanrooms, industrial processes, and other crucial locations because of its sophisticated features and sturdy build.
In vital applications including HVAC systems, cleanrooms, industrial processes, and building automation, the Polwax DPT30 Differential Pressure Transmitter is a high-performance gadget that offers accuracy, dependability, and simplicity of integration. With its sophisticated RS485 Modbus RTU connectivity, it may be easily integrated with contemporary automation systems. The DPT30’s remarkable full-scale accuracy of ±0.5% and broad measuring range of up to 0-700 mmWC guarantee dependable and consistent monitoring.
Applications
HVAC
Ensures accurate monitoring of air and filter differential pressure in HVAC systems, helping maintain optimal airflow, energy efficiency, and system performance.
Clean Rooms
Maintains critical pressure differentials between clean zones to prevent contamination and ensure compliance with cleanroom standards.
Industrial Processes
Provides reliable differential pressure measurement for process monitoring, ensuring stable operation, safety, and improved process control.
Building Automation
Integrates seamlessly with BMS to monitor pressure variations, enabling automated control, improved comfort, and efficient facility management.
Pharmaceutical
Supports controlled environments by accurately monitoring room pressure to meet regulatory requirements and ensure product safety and quality.
Pump Stations
Monitors pressure differences across pumps and filters to optimize performance, detect blockages, and prevent system failures.
Technical Data
| Media Compatibility | Air, non-combustible, non-corrosive gases |
| Model No |
DPT30/ DPT30/ DPT30/ DPT30 |
| Part Code |
0395 3200/ 0395 3211/ 0395 3221/ 0395 3231 |
| Alarm / Output |
Alarm, 4–20 mA/ Alarm, RS485 Modbus RTU/ Alarm, 4–20 mA & RS485 Modbus RTU/ Alarm, 4–20 mA, RS485 Modbus RTU, 24 V DC Relay |
| Measuring Range | 0–7000 Pa |
| Accuracy (from applied pressure) |
Ranges ≤ 0–10 mmWC: ±1.0% of F.S/ Ranges ≥ 0–25 mmWC: ±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 mmWC: 9 PSI 100 to 1000 mmWC: 19 PSI |
| 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 |
| Dimensions |
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 |
Differential Pressure Transmitter – DPT30
The Polwax DPT30 Differential Pressure Transmitter is a high-performance solution designed for accurate and reliable measurement of differential pressure in HVAC systems, clean rooms, pharmaceutical manufacturing, industrial processes, and building automation. With advanced sensing technology, wide configurable ranges, and multiple output options, the DPT30 ensures precise control in critical pressure-sensitive environments.
Multiple Model Variants
Available with 4–20 mA, RS485 Modbus RTU, relay output, and integrated alarm options.
Wide Pressure Range
Supports 10 configurable ranges from 0–25 Pa up to 0–7000 Pa for diverse applications.
High Measurement Accuracy
Provides precise differential pressure readings with accuracy up to ±0.5% of F.S.
Digital Configuration
Digital push-button interface allows quick configuration and range selection.
Advanced Communication
Supports RS485 Modbus RTU for seamless integration with BMS and automation systems.
Integrated Alarm
Built-in alarm alerts users instantly when pressure exceeds set limits.
Rugged Industrial Design
IP54-rated ABS enclosure ensures durability in demanding industrial environments.
Easy Panel Mounting
Compact panel-mount design with push-on tubing connections for quick installation.
