Standard Orifice Plate Flowmeter
Standard Orifice Plate Flowmeter
The standard orifice plate flowmeter is the most widely used differential pressure throttling device. Paired with a differential pressure transmitter, it measures flow of liquids, gases, and steam. It is highly standardized, can be put into use without real-flow calibration, and features a simple, robust, and reliable structure.
- Standard throttling element, recognized by international standards, can be put into use without real-flow calibration
- Simple and robust structure, stable performance, low cost
- Suitable for liquids, gases, steam, and some multiphase fluids
- Sensing element and differential pressure transmitter can be selected separately, offering flexible combination
- Designed and manufactured in accordance with ISO 5167 / GB/T 2624 standards
Overview
Product Overview
The standard orifice plate flowmeter is the most widely used differential pressure throttling device. The standard throttling element is recognized by international standards organizations and can be put into use without real-flow calibration. It is suitable for all single-phase fluids (liquids, gases, steam) and some multiphase flows, and is widely used in general process measurements in industries such as petroleum, chemical, power, and metallurgy.
Measurement Principle
When fluid flows through the orifice plate, a differential pressure proportional to the square of the flow rate is generated across the throttling element. Combined with a differential pressure transmitter, the flow rate can be calculated. The sensing element and the differential pressure display instrument can be selected separately, offering flexible configuration.
Specifications
| Measurement Principle | Differential pressure throttling (standard orifice plate) |
| Applicable Medium | Liquid, gas, steam |
| Rangeability | 3:1 ~ 4:1 |
| Nominal Diameter | DN50–DN1000 (commonly used) |
| Nominal Pressure | PN1.0–42MPa |
| Pressure Tapping Method | Corner / Flange / Radius tapping |
| Matching Instrument | Differential pressure transmitter |
| Execution Standard | ISO5167 / GB/T2624 |