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Flow meter
Orifice flowmeter

I. Overview
是测量流量的差压发生装置,配合各种差压计或差压变送器可测量管道中各种流体的流量。 DXLG series orifice flowmeter is a differential pressure generating device for measuring flow rate. It can be used with various differential pressure gauges or differential pressure transmitters to measure the flow rate of various fluids in pipelines. 节流装置包括环室孔板,喷嘴等。 The orifice plate flow meter throttling device includes an annular chamber orifice plate, a nozzle and the like. 节流装置与差压变送器配套使用,可测量液体、蒸汽、气体的流量,孔板流量计广泛应用于石油、化工、冶金、电力、轻工等部门。 Orifice flowmeter throttling device is used together with differential pressure transmitter to measure the flow of liquid, steam and gas. Orifice flowmeter is widely used in petroleum, chemical, metallurgy, power, light industry and other departments.
The fluid filled with the pipeline, when they flow through the throttle device in the pipeline, the flow beam will form a local contraction at the throttle of the throttle device, thereby increasing the flow velocity and low static pressure, so it is generated before and after the throttle. The pressure drop, that is, the pressure difference, the greater the flow rate of the medium flow, the greater the pressure difference generated before and after the throttle, so the orifice flowmeter can measure the flow rate of the fluid by measuring the pressure difference. This measurement method is based on the laws of energy conservation and flow continuity.
Intelligent throttling device (orifice flowmeter) is a new generation flowmeter that integrates flow, temperature and pressure detection functions and can automatically compensate for temperature and pressure. New technology, strong function, compact structure, simple operation and easy to use.
Features
节流装置结构易于复制,简单、牢固,性能稳定可靠,使用期限长,价格低廉。 ▲ The orifice plate flow meter throttling device structure is easy to replicate, simple, sturdy, stable and reliable performance, long service life, and low price.
孔板计算采用国际标准与加工 Orifice plate calculation adopts international standards and processing
应用范围广,全部单相流皆可测量,部分混相流亦可应用。 ▲ Orifice flowmeters have a wide range of applications. All single-phase flows can be measured, and some mixed-phase flows can also be applied.
标准型节流装置无须实流校准,即可投用。 ▲ The standard throttling device can be put into use without actual flow calibration.
一体型孔板流量计安装更简单,无须引压管,可直接接差压变送器和压力变送器。 Integrated orifice flowmeter is simpler to install, without the need for a pressure pipe, and can be directly connected to a differential pressure transmitter and a pressure transmitter.
特点 Smart Orifice Flowmeter Features
采用进口单晶硅智能差压传感器 Using imported single crystal silicon intelligent differential pressure sensor
高精度,完善的自诊断功能 High precision and perfect self-diagnostic function
智能孔板流量计智能孔板流量计其量程可自编程调整。 Smart orifice plate flowmeter The range of the smart orifice plate flowmeter can be adjusted by self programming.
智能孔板流量计可同时显示累计流量、瞬时流量、压力、温度。 ▲ The intelligent orifice plate flowmeter can simultaneously display the accumulated flow, instantaneous flow, pressure, and temperature.
具有在线、动态全补偿功能外,智能孔板流量计还具有自诊断、自行设定量程。 ▲ In addition to the online and dynamic full compensation function, the smart orifice plate flow meter also has self-diagnosis and self-setting range.
配有多种通讯接口 Equipped with multiple communication interfaces
稳定性高 High stability
量程范围宽、大于10:1 Wide range, greater than 10: 1
技术指标 Technical Specifications of Intelligent Orifice Flowmeter
高精度:±0.075% High accuracy: ± 0.075%
高稳定性:优于0.1%FS/年 High stability: better than 0.1% FS / year
高静压:40MPa High static pressure: 40MPa
连续工作5年不需调校 No adjustment required for 5 consecutive years of work
可忽略温度、静压影响 Negligible effects of temperature and static pressure
抗高过压 Resistant to high overpressure
Selection

model

Description

DXLG ) Throttling device ( orifice flowmeter )
Code

Two basic classifications according to their structural characteristics

K

Orifice plate

P

Nozzle, etc.

Code

Nominal pressure (105Pa)

2.5

2.5

10

10

16

16

25

25

64

64

100

100

200

200

Code

Caliber (mm)

10 ~ 1600

10 ~ 1600mm

Code

Subdivided by its structural form

H

Standard orifice plate (ring chamber)

Y

Standard orifice plate (flange)

K

Standard orifice plate (drilled)

I

ISA 1932 nozzle

L

Long diameter nozzle

W

Venturi nozzle

G

Classic venturi

S

Double well plate

Q

Round hole plate

Z

Conical inlet orifice

R

1/4 round hole plate

P

Eccentric orifice plate

N

Whole (built-in) orifice plate

X

Wedge orifice

T

Special throttling devices not listed above

Code

medium

1

liquid

2

gas

3

steam

4

Hot liquid

Code

Form of compensation

N

Without pressure and temperature compensation

P

With pressure compensation output

T

With temperature compensated output

Q

With pressure and temperature compensation output

Code

Transmitter differential pressure range

0

Micro differential pressure range

1

Low differential pressure range

2

Medium differential pressure range

3

High differential pressure range

Code

Whether to bring on-site display

W

Throttle sensor

X

Intelligent throttle device (flow meter)