Orifice Plate Flow Meter for High-Precision Pipe Flow Measurement

• Customization: Available
• After-sales Service: Free Technical Guidance
• Warranty: 1 Year
• Model NO.: LG
• Accuracy: ±0.6-1%
• Main Application: Water
• Size: DN15~1200
• Sensor: Tube/Flange
• Application: Industrial Production
• Type: Orifice Plate Flow Meter
• Measuring Media: Liquid
• Measuring Principle: Mechanics
• Measurement Object: Closed Pipeline
• Certification: CE, ISO
• Transport Package: Carton Packaging
• Specification: 50.00cm * 50.00cm * 100cm
• Trademark: Vacorda
• Origin: China
• HS Code: 9026100000
• Production Capacity: 400 Pieces Per Week
• Package Size: 50.00cm * 50.00cm * 100.00cm
• Package Gross Weight: 5.000kg

Product Description

Working Principle

LG throttling device is a primary device in a differential pressure flow measurement system, which consists of a throttle, a pressure-receiving device and a straight pipe section. Throttling device is divided into standard throttling device and non-standard throttling device, the one is coincident with IS05167 and GB/T2624 standard is the standard throttling device, the others are non-standard throttling device.

When the pipe filled fluid flows through the throttling device in the pipe, according to the law of conservation of energy and the equation of flow continuity, the stream will form a local contraction at the throttle, thereby increasing the flow rate, static pressure reduction, static pressure difference ΔP(or named differential pressure) before and after the throttle. The greater the flow rate of the fluid, the greater the differential pressure generated before and after the throttle, and the amount of fluid flow is measured by measuring the differential pressure before and after the throttle.
Standard throttling devices should normally be used whenever possible, and non-standard throttling devices can be used only when the fluid Reynolds number is small or contains impurities.

Flow calculation formula:

In formula:Qm--Mass flow of fluid  D--Pipe inner diameter
C--Outflow coefficient   ∈--Swellability coefficient
β--Diameter ratio(β=d/D) ΔP--Static pressure difference generated before and after the throttle
D--Throttle diameter  p--Fluid density



Technical Parameters
 

Nominal diameter:	DN15~1200(More than 1200 negotiated orders)
Nominal pressure:	≤42MPa
Inaccuracy:	±0.5%~±1.5%
Installation method:	Flange connection, Welded connection(or customized)
Pressure method:	Corner connection pressure (ring chamber/ separate drilling), Flange/ radial pressure or else
Straight pipe:	Upstream5~10D,downstream2~5D

Throttling device classification
 

Type	Pressure method	Reference model	Nominal diameter (mm)	Nominal pressure(MPa)	Diameter ratio
Standard Orifice Plate	Corner pressure	LGBH-1.0~10	50-400	1.0~10	0.23~0.80 0.23~0.45 0.45~0.77 0.77~0.80
		LGBH-20	50-250	20
		LGBH-32	15-150	32
		LGBZ-0.25	450-1600	0.25
		LGBZ-0.6	450-1000	0.6
		LGBZ-1.0~1.6	450-600	1.0~1.6
		LGBZ-2.5	450-500	2.5
	Flange pressure	LGBF-1.0~2.5	50-750	1.0~2.5	0.25~0.75
		LGBZ-1.0~10	50-400	1.0~10
	Radial pressure	LGBJ-1.0~6.4	50-400	1.0~6.4

Length of the straight pipe for reference
 

Nominal diameter(mm)	L1(mm)	L2(mm)
50	10*50=500	5*50=250
80	10*80=800	5*80=400
100	10*100=1000	5*100=500
125	1000	260
150	1000	310
200	1200	410
300	1700	710
400	2000	810

Structure for standard orifice plate






Selection guide
LG-12345/678
CODE

1	Threshold type code
	X-small orifice plate	B-standard orifice plate	T- Lens plate	V- Conical inlet	S- Double orifice	H-1/4 round orifice plate
	Q- Round hole plate	M-small nozzle	P-standard nozzle	C-long neck nozzle	L- Venturi nozzle	W- Standard venturi
2	Flange material code
	C- Carbon steel	P1-SS 304	P2-SS 316L	P3-SS 321	F-PTFE	T- User request
3	Throttle material code
	P1-SS 304	P2-SS 316L	P3-SS 321	F-PTFE	T- User request
4	Pressure mode code
	H-Corner ring chamber pressure		Z-Corner drilling		F-Flange pressure
	J-Span pressure		T-Special pressure		Fc-Built-in flange pressure
5	Nominal pressure code(Unit:MPa)
	Write pressure value directly. E.g 2.5MPa, write as "25", 32MPa, write as "320"
6	Nominal diameter(mm)
	Write the nominal diameter directly. E.g DN50, write as "50", DN300, write as "300"
7	Working temperature code
	B--195ºC	C--150ºC	D--70ºC	E--40ºC	H-80ºC	I-150ºC
	J-250ºC	K-350ºC	T-450ºC	V-500ºC	W-600ºC	X-User request
8	Structure code
	1- Throttle	2-Throttle,Ring room	3- Throttle,Ring room,Flange		4- Throttle,Ring room,Flange, Short tube
	5- Throttle,Ring room,Flange, Measuring tube			6- Throttle,Ring room,Flange, Measuring tube, Front and rear mating flange