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Differential Pressure Transmitter
Polwax DPT20
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
A high-performance differential pressure transmitter, the Polwax DPT20 is intended to provide precise, dependable, and effective pressure measurement in a variety of industrial applications. The DPT20 is designed to be precise and long-lasting, and it has strong features and state-of-the-art technology to satisfy demanding needs.
The DPT20 is a dependable way to monitor and regulate differential pressure, guaranteeing improved system dependability and operating efficiency. Polwax keeps coming up with new ideas and delivering goods that are suited to the demands of the market, all while providing top-notch customer service. Dependable Simplicity For consumers who require simple and precise differential pressure monitoring, the DPT20 is a reliable option.
Product Overview
he Polwax DPT20 Differential Pressure Transmitter is a high-performance, reliable solution for accurate differential pressure measurement across industrial, commercial, and HVAC applications. Designed for precision, durability, and user-friendly operation, the DPT20 ensures dependable monitoring and control of pressure differences to enhance system efficiency and safety.
Key Highlights
- Accurate & Stable Measurement: Provides precise differential pressure readings with high accuracy (±0.5% for most ranges), ensuring dependable performance under varying conditions.
- Easy Configuration & Installation: Features a digital push-button interface for intuitive setup and supports panel mounting for versatile installation.
- Flexible Output Options: Standard 4–20 mA output with optional 0–10 V, enabling seamless integration with control systems.
- Durable Design: Housed in an IP65-rated ABS enclosure for protection against dust and moisture, suitable for industrial environments.
- Versatile Operating Range: Supports multiple measurement ranges (up to 0–700 mmWC) and works reliably over a wide temperature range with built-in temperature compensation.
- Enhanced Safety: Equipped with an inbuilt alarm buzzer for real-time alerts on critical pressure changes.
The DPT20 is ideal for HVAC systems, cleanrooms, industrial process control, building automation, and environments requiring precise differential pressure monitoring to maintain performance, safety, and regulatory compliance.
From HVAC systems to industrial processes, the Polwax DPT20 Differential Pressure Transmitter is designed to offer high-accuracy pressure monitoring. The DPT20, which combines accuracy and user-friendliness, is an affordable solution for differential pressure measurement requirements and is well-known for its dependability and simplicity of integration. Dependable Simplicity For consumers who require simple and precise differential pressure monitoring, the DPT20 is a reliable option. It is a flexible option for the majority of HVAC and building automation activities due to its small size, ease of setup, and compatibility with previous systems.
The Polwax DPT20 is a high-performance differential pressure transmitter engineered for precise and reliable pressure measurement in industrial environments. It delivers stable, accurate monitoring of differential pressure for HVAC systems, process control, and building automation.
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 |
DPT20 / DPT20 |
| Part Code |
0395 3100 / 0395 3101 |
| Alarm / Output |
Inbuilt Buzzer / 4–20 mA |
| Measuring Range |
0–2500 Pa 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 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 / 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 |
| Dimensions |
Front View: 86 mm Side View: 35 mm Back View: 80 mm |
| Cutout Size | Round (80 mm) |
| Scope of Supply | Transmitter, Calibration Certificate, Manual |
Differential Pressure Transmitter – DPT20
The Polwax DPT20 Differential Pressure Transmitter is engineered for precise monitoring of low differential pressure in HVAC, clean rooms, pharmaceutical facilities, industrial processes, and building automation systems. With configurable pressure ranges, high accuracy, and robust construction, the DPT20 ensures reliable performance in critical pressure-controlled environments.
Model Variant
DPT20 with inbuilt buzzer and 4–20 mA output for reliable pressure monitoring.
Wide Pressure Range
Supports 8 configurable ranges from 0–25 Pa up to 0–2500 Pa for versatile applications.
High Accuracy
Delivers precise differential pressure measurement with accuracy up to ±0.5% of F.S.
Digital Configuration
Equipped with digital push buttons for easy range selection and setup.
Industrial Output Options
Standard 4–20 mA output with optional 0–10 V for seamless system integration.
Built-in Alarm
Integrated buzzer alerts users to critical pressure deviations in real time.
Rugged Enclosure
IP54-rated ABS enclosure ensures durability in industrial and commercial environments.
Panel Mount Design
Compact panel-mount construction with push-on pressure connections for easy installation.
