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Precession Vortex Flowmeter
Precession Vortex Flowmeter
Precession Vortex Flowmeter
Precession Vortex Flowmeter

Precession Vortex Flowmeter

Accuracy: 1.0~1.5%
Repeatability: Less than 1/3 of basic error absolute value
Working Power: 24VDC+3.6V battery power, can remove the battery
Output Signal: 4-20mA, pulse, RS485, alarm
Applicable Medium: All gases (except steam)
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
Natural Gas
Petroleum
Petroleum
Chemical Monitoring
Chemical Monitoring
Electric Power
Electric Power
Metallurgical Industry
Metallurgical Industry
Coal 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

             
 H  Dφ  Kφ  N  L  dφ  H  Kφ  N L  H N L
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.
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