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Smart Differential Pressure Transmitter
A differential pressure transmitter is a device that measures the pressure difference between its two ports and outputs a standard signal (such as 4–20 mA).
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Product Overview
HX-3051DP Series Differential Pressure Transmitter
A differential pressure transmitter is a device that measures the pressure difference between two ports and outputs a standard signal (such as 4–20 mA). Unlike conventional pressure transmitters, it features two pressure ports—typically a positive‑pressure port and a negative‑pressure port. Under normal operating conditions, the positive‑pressure side must be at a higher pressure than the negative‑pressure side for accurate measurement. The HX3051DP intelligent differential pressure transmitter is a next‑generation instrument manufactured using advanced foreign technologies and equipment. Its key raw materials, components, and parts are all imported, and the complete unit undergoes rigorous assembly and testing. It boasts an advanced design philosophy, a comprehensive range of models and specifications, and straightforward installation and operation. With a compact, refined appearance that seamlessly integrates the structural advantages of two widely used domestic models—the Rosemount 3051 and the Yokogawa EJA—the HX3051DP offers users a fresh, modern experience. Moreover, it is fully compatible with older series such as the 1151 and CECC, allowing direct replacement in existing installations, thereby providing strong versatility and interchangeability. To meet the growing demands of China’s advancing automation capabilities, the 3051DP not only features a sleek, space‑saving design but also incorporates intelligent functionality based on the HART fieldbus protocol. It delivers exceptional measurement performance, suitable for applications involving pressure, differential pressure, liquid level, and flow measurement.
Structural Features and Advantages
1. Compact and aesthetically pleasing design, lightweight
2. Range shift function, with a range shift ratio of 6:1.
3. Damping: Adjustable from 0 to 32 seconds, in increments of 0.1 second.
4. Zero-point and full-scale compensation correction function
5. Multi-point calibration of output current
6. Displays multiple monitoring variables; pressure units are selectable.
7. Square-root function for output current
8. Equipped with non-volatile memory, it is immune to data loss during power outages and features a function to restore original calibration data.
9. Remote parameter setting and function configuration can be performed via the HART communicator and local pushbuttons.
Main Categories
1. HX3051DR series differential pressure transmitter;
2. HX3051DP series general-purpose differential pressure transmitter;
3. HX3051HP series high-static-pressure differential pressure transmitter.
Working principle
In the HX-3051 capacitive differential pressure transmitter, the two pressures of the measured medium are applied to the high‑pressure and low‑pressure chambers, respectively, acting on the isolation diaphragms on either side of the δ element (the sensing element). These pressures are transmitted through the isolation diaphragms and the filling fluid within the element to both sides of the measuring diaphragm. The MT3351 series differential pressure transmitters each consist of a capacitor formed by the measuring diaphragm and electrodes on the insulating diaphragms on both sides. When the pressures on the two sides differ, the measuring diaphragm displaces; the magnitude of this displacement is proportional to the pressure difference, resulting in unequal capacitance between the two sides. An oscillation and demodulation circuit then converts this into a signal that is proportional to the pressure.
Performance
1. Excellent performance: accuracy can reach 0.2%
2. Differential Pressure: Calibration range from 0.125 kPa to 6,000 kPa
3. Process isolation diaphragm: 316L stainless steel
4. Compact, robust, and lightweight design; easy to install.
5. The aluminum alloy casing is durable and long-lasting.
Application
1. Boiler drum water level measurement;
2. Flow measurement using differential pressure flowmeters;
3. Liquid level measurement in sealed containers;
4. Industrial Process Measurement and Control.
Technical Specifications
- Differential pressure range: -100 kPa to 0 kPa to 2000 kPa
- Temperature compensation range: -20 to 80°C
- Overload capacity: 200% F·S
- Operating temperature range: -40 to 85°C
- Operating static pressure: 6.3 MPa (customizable high‑static‑pressure sensor available)
- Temperature drift: 0.03% F·S/°C
- Operating mode: Differential pressure
- Long-term stability: ≤0.1% F·S/year
- Measuring medium: Media compatible with 316L stainless steel
- Supply current: ≤30mA
- Wiring method: Two-wire system
- Insulation resistance: ≥100 MΩ (100 VDC)
- Operating voltage: 24 V DC
- Material: Stainless steel
- Output signal: 4–20 mA, 1–5 VDC
- Electrical connector: M20×1.5
- Accuracy class: 0.2 / 0.5
- Threaded connection: M20×1.5, G1/4
关键词： Smart Differential Pressure Transmitter
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Contact Us
Address: No. 1, Building 1, Phase 1, Longding Enterprise Center, No. 36, Hongsong Road, High-tech Zone, Zhengzhou City
Phone:+86-0371-67560588
Email:848665210@qq.com
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