Differential Pressure Flowmeter

Differential Pressure Flowmeter
The XYOM differential pressure flowmeter is a high range ratio differential pressure flow device composed of a standard throttling element and a differential pressure transmitter. It is widely used in process control and measurement in fields such as petroleum, chemical, metallurgy, power, heating, and water supply.Differential pressure flowmeter is widely used for flow measurement of gases, vapors, and liquids.
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Product Description

Overview

The XYOM differential pressure flowmeter is a high range ratio differential pressure flow device composed of a standard throttling element and a differential pressure transmitter. It is widely used in process control and measurement in fields such as petroleum, chemical, metallurgy, power, heating, and water supply.Differential pressure flowmeter is widely used for flow measurement of gases, vapors, and liquids.

Product Features

• The throttling device is simple, sturdy, and has stable performance. Adopting international standards and processing.

• Wide range of applications.

• No need for real flow calibration, it can be put into use.

• The integrated installation is easy.

• Adopting imported monocrystalline silicon intelligent differential pressure sensors.

• Comprehensive self diagnostic function.

• The range of the intelligent differential pressure flowmeter can be self programmed and adjusted.

• The flow integrator can simultaneously display cumulative flow, instantaneous flow, pressure, and temperature.

• In addition to online and dynamic full compensation functions, it also has self diagnosis and self setting range.

• Equipped with multiple communication

Application

1. Nominal diameter: 20mm ≤ DN ≤ 2400mm

2. Nominal pressure: PN ≤ 10MPa

3. Working temperature: -50 ℃ ≤ t ≤ 550 ℃

4. Range ratio: 1:3

5. Accuracy: Level 1.5

Working principle

As shown in the figure, is to place a throttling element in the pipeline. When fluid flows through the throttling element, a pressure difference (differential pressure P) will be generat ed on both sides of the throttling element. The flow rate is pr oportional to the square root of the differential pressure, that is:

Q v = AC/ sqr(1-β4)εd2sqr (ΔP/ρ)

=k*(ΔP)1/2 A - constant;

C - outflow coefficient;

β - diameter ratio (=d/D);

D - aperture of throttle element (mm);

ε - coefficient of expandability;

△ P - Differential pressure before and after the throttle element (Pa);

P - fluid density under working conditions (kg/m3);

K - coefficient.

Outline Structure

Throttling components: standard orifice plate, s tandard nozzle, long diameter nozzle, 1/4 circular o rifice plate, etc;

Pressure collection device: ring chamber, press ure collection flange, clamping ring, etc;

Connecting flanges: flanges according to natio nal standards, various standards, and other design departments; Fasteners, valves, and other accessories.

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Pressure Transmitters for Industrial Pressure Measurement

Xinyi Instrument supplies pressure transmitters for process control, hydraulic systems, petrochemical plants, water treatment, HVAC, power generation and general industrial pressure monitoring. Our pressure transmitter range covers gauge pressure, absolute pressure, differential pressure, high temperature media and digital communication applications.

Choose from compact pressure transmitters, smart 3051 differential pressure transmitters, diaphragm seal models, RS485 digital pressure transmitters and high frequency dynamic pressure sensors. Standard outputs include 4-20 mA, voltage output, HART and RS485 Modbus options, with stainless steel wetted parts and custom process connections available on request.

Pressure Transmitter Parameters

Pressure Types Gauge, absolute, negative pressure, differential pressure
Measuring Range From low differential pressure to high pressure ranges up to 100 MPa, depending on model
Output Signals 4-20 mA, 0-5 V, 1-5 V, 0-10 V, RS485 Modbus, HART options
Accuracy Typical options include 0.1%, 0.2%, 0.25% and 0.5% FS
Process Connection M20 x 1.5, G1/4, G1/2, NPT and customized thread connections
Wetted Materials Stainless steel, 316L diaphragm and corrosion-resistant sealing options
Media Water, oil, gas, air, steam and compatible liquid or gas media
Applications Pipeline pressure, tank level, flow differential pressure, hydraulic pressure and automation systems

Recommended Pressure Transmitter Series

  • Xinyi YW-150 - differential pressure transmitter for stable industrial measurement.
  • Xinyi YW-3051DP - smart differential pressure transmitter for process control.
  • Xinyi YW-130 / YW-140 - compact pressure transmitters for general pressure monitoring.
  • RS485 Digital Pressure Transmitter - Modbus communication for remote monitoring systems.
  • High Temperature Pressure Transmitter - designed for hot media and demanding process conditions.
  • Siemens, Yokogawa and ABB Options - international brand transmitters available for project matching.

Pressure Transmitter FAQ

What is a pressure transmitter used for?

A pressure transmitter converts the pressure of liquid, gas or steam into a standard electrical signal for PLC, DCS, recorder or control instrument input. It is widely used for pipeline pressure, tank level, flow measurement and process safety monitoring.

How do I choose the right pressure transmitter?

Confirm the pressure range, pressure type, medium, temperature, output signal, accuracy, installation thread, electrical connection and environmental requirements. For corrosive media, high temperature or sanitary applications, diaphragm material and sealing structure are especially important.

What is the difference between gauge, absolute and differential pressure transmitters?

Gauge pressure transmitters measure pressure relative to atmospheric pressure. Absolute pressure transmitters measure pressure relative to vacuum. Differential pressure transmitters measure the pressure difference between two points and are commonly used for flow, filter and level measurement.

Can Xinyi Instrument provide customized pressure transmitters?

Yes. Xinyi Instrument can support customized pressure ranges, process connections, output signals, cable length, display options and model selection for different industrial applications.