Precession Vortex Flowmeter from China Manufacturer

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Natural gas flow meter

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High temperature flow meter

Introduction

Application

Technical data

Installation

Introduction

Precession Vortex flow meter adopt advanced technology, it is able to measure gas flow at low pressure, multi signal output and hyposensitivity flow disturbance. This flow meter combine the functions of gathering flow, temperature and pressure testing, and could carry out the temperature, pressure and compression factor compensation automatically, Which is widely applied in the measurement of natural gas, coal gasification, liquid gas, light hydrocarbon gas etc., With the new micro processor, it has high reliability and operational precision, This has lead to a superior performance of flow monitoring in an inline gas pipe measurement.

Advantages

Precession Vortex Flowmeter Advantages
♦ Intelligent flowmeter integrates flow probe, microprocessor, pressure and temperature sensor.
♦ 16-bit computer chip, high integration, small volume, good performance, strong machine function.
♦ Adopt new signal processing amplifier and unique filtration technology.
♦ Dual-detection technology, improve detection signal strength, suppress vibration by pipelines.
♦ LCD display of temperature, pressure, instantaneous flow and accumulative flow.

Application

Precession Vortex Flowmeter Application
♦ Gas flow, oil field and urban gas distribution
♦ Petroleum, chemical, electric power, metallurgy industry
♦ Natural gas for many applications
♦ Compressed air, nitrogen gas
♦ Blast furnace gas, the cold wind, combustion-supporting air, mixed gas, flue gas, recycle gas etc

Natural Gas

Petroleum

Chemical Monitoring

Electric Power

Metallurgical Industry

Coal Industry

Technical data

Table 1: Precession Vortex Flow Meter Main Technical Parameters

Caliber (mm)	20	25	32	50	80	100	150	200
Flow Range (m3/h)	1.2~15	2.5~30	4.5~60	10~150	28~400	50~800	150~2250	360~3600
Accuracy	1.0~1.5%
Repeatability	Less than 1/3 of basic error absolute value
Working Pressure (MPa)	1.6Mpa, 2.5Mpa, 4.0Mpa, 6.3Mpa Special pressure please double check
Application Condition	Environment temperature: -30℃~+65℃ Relative humidity: 5%~95% Medium temperature: -20℃~+80℃ Atmospheric pressure: 86KPa~106KPa
Working Power	24VDC+3.6V battery power, can remove the battery
Output Signal	4-20mA, pulse, RS485, alarm
Applicable Medium	All gases (except steam)
Explosion-proof Mark	Ex ia II C T6 Ga

Table 2: Precession Vortex Flow Meter Size

Caliber (mm)	Length (mm)	PN1.6~4.0MPa
Caliber (mm)	Length (mm)	H	Dφ	Kφ	N	L	dφ	H	Dφ	Kφ	N	L	dφ	H	Dφ	Kφ	N	L	dφ
25	200	305	115	85	4	14	65
32	200	320	140	100	4	18	76
50	230	330	165	125	4	18	99
80	330	360	200	160	8	18	132
		PN1.6MPa						※PN2.5~4.0MPa
100	410	376	220	180	8	18	156	390	235	190	8	22	156
150	570	430	285	240	8	22	211	450	300	250	8	26	211
		PN1.6MPa						PN2.5MPa						※PN4.0MPa
200	700	470	340	295	12	22	266	490	360	310	12	26	274	510	375	320	12	30	284

Table 3: Precession Vortex Flow Meter Flow Range

DN(mm)	Type	Flow Range (m³/h)	Working Pressure (MPa)	Accuracy Level	Repeatability
20		1.2～15	1.6 2.5 4.0 6.3	1.0 1.5	Less than 1/3 of basic error absolute value
25		2.5～30
32		4.5～60
50	B	10～150
80	B	28～400
100	B	50～800
150	B	150～2250
200		360～3600

Table 4: Precession Vortex Flow Meter Model Selection

LUGB		XXX	X	X	X	X	X	X	X	X	X


Caliber (mm)	DN25-DN200 Reference Code, please check caliber code table 1
Function	With temperature & pressure compensation	Y
	Without temperature & pressure compensation	N
Nominal Pressure	1.6Mpa		1
	2.5Mpa		2
	4.0Mpa		3
	6.3Mpa		4
	Others		5
Connection	Flange			1
	Thread			2
	WAFER			3
	Others			4
Output Signal	4-20mA,pulse (two-wire system)				1
	4-20mA,pulse (three-wire system)				2
	RS485 communication				3
	4-20mA, pulse,HART				4
	Others				5
Alarm	Low and high limit Alarm				6
	Without				7
Accuracy Level	1.0					1
	1.5					2
Cable Entry	M20X1.5					M
	1/2'' NPT					N
Structure Type	Compact/Integral						1
	Remote						2
Power Supply	3.6V Lithium Battery,DC24V							A
	DC24V							D
	3.6V Lithium Battery							E
Ex-proof	With Ex-proof								0
	Without Ex-proof								1
Shell Material	Stainless Steel									S
	Aluminium Alloy									L
Process Connection	DIN PN16										1
	DIN PN25										2
	DIN PN40										3
	ANSI 150#										4
	ANSI 300#										A
	ANSI 600#										B
	JIS 10K										C
	JIS 20K										D
	JIS 40K										E
	Others										F

Installation

1. Precession vortex flow meter installation requirements
1) The precession vortex flowmeter should be installed according to the flow direction mark.
2) The precession vortex flowmeter can be installed horizontally, vertically or inclined at any angle.
3) The requirements for upstream and downstream straight pipe sections are shown in Figure 1
4) Except for the larger particles or longer fibrous impurities in the tested medium, there is generally no need to install a filter.
5) There should be no strong external magnetic field interference and strong mechanical vibration around the installation of the precession vortex flowmeter.
6) The installation of the precession vortex flowmeter must be reliably grounded

2. Precession vortex flow meter maintenance
(1) On-site installation and maintenance must comply with the warning "Do not open the cover when there is explosive gas", and turn off the external power supply before opening the cover.
(2) When the pipeline is installed and tested for tightness, pay attention to the very high pressure that the pressure sensor of the vortex flowmeter can withstand, so as not to damage the pressure sensor.
(3) When it is put into operation, the upstream and downstream valves of the flow meter should be opened slowly to avoid the instantaneous air flow damaging the meter and pipeline.
(4) When the flowmeter needs to have remote signal transmission, it should be connected to the external power supply 24VDC strictly according to the requirements of 3 and 4 "Electrical Performance Index", and it is strictly forbidden to directly connect the 220VAC or 380VAC power supply to the signal input port.
(5) The user is not allowed to change the wiring method of the explosion-proof system and arbitrarily twist each output lead connector;
(6) When the flowmeter is running, it is not allowed to open the front cover to change the instrument parameters, otherwise it will affect the normal operation of the precession vortex flowmeter
(7) Do not loosen the fixed part of the flowmeter at will.
(8) When the product is used outdoors, it is recommended to add a waterproof cover.