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The HNLG series orifice flowmeter is a differential pressure generating device for measuring flow. It can measure the flow of various fluids in the pipeline with various differential pressure gauges or differential pressure transmitters. The orifice flow meter throttling device includes a ring chamber orifice plate, a nozzle, and the like. The orifice flowmeter throttling device is used with the differential pressure transmitter to measure the flow of liquid, steam and gas, and is widely used in petroleum, chemical, metallurgy, electric power, light industry and other departments.
The fluid filled with pipes, when they flow through the throttling device in the pipe, the flow will form a local contraction at the throttle of the throttling device, thereby increasing the flow rate and the static pressure is low, so that the throttle 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 flow meter can measure the flow rate by measuring the pressure difference. This measurement method is based on the law of energy conservation and the law of flow continuity.
The intelligent throttle device (orifice flowmeter) is a new generation flowmeter that integrates flow, temperature and pressure detection functions and can automatically compensate for temperature and pressure. The orifice flowmeter adopts advanced microcomputer technology and micro power consumption. New technology, powerful function, compact structure, simple operation and easy to use.
Second, the characteristics:
â–²The structure of the throttling device is easy to copy, simple and firm, stable and reliable in performance, long in service life and low in price.
â–² Orifice calculation adopts international standard and processing â–² Wide application range, all single-phase flow can be measured, and some mixed phase flow can also be applied.
â–²The standard type throttle device can be used without real-flow calibration.
â–²Easy to install, no need to press the tube, can be directly connected to the differential pressure transmitter and pressure transmitter.

Intelligent orifice flowmeter features:
â–²Imported monocrystalline silicon intelligent differential pressure sensor â–²High precision, perfect self-diagnosis function â–²Intelligent orifice flowmeter intelligent orifice flowmeter can be self-programmed and adjusted.
â–²Intelligent orifice flowmeter can display cumulative flow, instantaneous flow, pressure and temperature at the same time.
â–²With the online and dynamic full compensation function, the intelligent orifice flowmeter also has self-diagnosis and self-setting range.
â–²With a variety of communication interfaces â–² high stability â–² wide range, greater than 10:1

Intelligent orifice flowmeter technical indicators:
▲High precision: ±0.075%
â–² high stability: better than 0.1% FS / year â–² high static pressure: 40MPa
â–²No need to adjust for 5 years of continuous operation â–²Ignore temperature, static pressure â–²Anti-high overpressure

Third, the selection

model

Description

Two basic classifications according to their structural characteristics

Orifice plate

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)

10~1600mm

Code

Subdivided by its structure

H

Standard orifice plate

Y

Standard orifice plate (flange)

K

Standard orifice plate (drilled hole)

I

ISA 1932 nozzle

L

Long diameter nozzle

W

Venturi nozzle

G

Classic venturi

S

Double orifice

Q

Round hole plate

Z

Tapered inlet orifice

R

1/4 round hole plate

P

Eccentric plate

N

Whole (built-in) orifice plate

X

Wedge plate

T

Special throttling device not listed above

Code

medium

1

liquid

2

gas

3

steam

4

High temperature liquid

Code

Compensation form

N

Without pressure, temperature compensation

P

Pressure compensated output

T

With temperature compensated output

Q

With pressure, temperature compensated output

Code

Transmitter differential range

0

Differential pressure range

1

Low differential pressure range

2

Medium differential pressure range

3

High differential pressure range

Code

Whether with live display

W

Throttle sensor

X

Intelligent throttle device (flow meter)

Related products: round hole plate, annular plate flowmeter