Vortex Flowmeter from China Manufacturer - （Q&T Instrument Co., Ltd

Products list

Electromagnetic Flow Meter

Vortex Flow Meter

Ultrasonic Flow Meter

Turbine Flow Meter

Thermal Mass Flow Meter

Coriolis Mass Flow Meter

Metal Tube Rotameter

Precession Vortex Flowmeter

Ultrasonic Level Meter

Radar Level Meter

Radar-Flowmeter

Oval Gear Flow Meter

Water Quality Analyzer

Throttling Device

Tag Cloud

Natural gas flow meter

LPG gas flow meter

High temperature flow meter

Introduction

Application

Technical Data

Installation

Introduction

Flange vortex flow meter is used in numerous branches of industry to measure the volume flow of liquids, gases and steam. Applications in the chemicals and petrochemicals industries, for example, in power generation and heat-supply systems involve widely differing fluids: saturated steam, superheated steam, compressed air, nitrogen, liquefied gases, flue gases, carbon dioxide, fully demineralized water, solvents, heat-transfer oils, boiler feedwater, condensate, etc.

Advantages

Vortex flow meter advantages and disadvantages
Vortex flow meter body is robust and universally applicable for liquids, gases and steam,optimized for steam applications.
For gases measurement, if the gas temperature and pressure change a lot, pressure and temperature compensation will be a must, vortex flow meter could add temperature and pressure compensation.
Q & T Vortex flow meter adopt Japan OVAL technology and design.
To protect the sensor, Q&T vortex flow meter choose embedded sensor, with 4 piezo-electric crystal encapsulated inside the sensor, which is our own patent.
There is no moving parts, no abrasion, non-wearing parts inside the vortex flow meter sensor, fully welded SS304 body (SS316 selectable).
With patented sensor and flow sensor body, Q&T vortex flow meter could eliminate drift & vibration influence from great aspect in the working site while compare with other flow meters.
Apart from electromagnetic flow meter and ultrasonic flow meter could work as flow meter and BTU meter, add the temperature sensor and totalizer, vortex flow meter could also work as BTU meter and measure steam or hot water energy.
Requires very few power consumption: 24 VDC, 15 Watts maximum;
In gas measurement, vortex flow meter could achieve high accuracy ±0.75%~±1.0% of reading ( gas ±1.0%, liquid ±0.75%); which could use in custody transfer , while the metal tube rotameter or orifice plate usually use for process control.
With a variety of signals outputs and selection, such as 4-20mA, pulse with HART or pulse with RS485 are selectable.
In the electronic device of measuring flow, vortex flow meter is the only one could resist wide temperature range up to highest temperature 350℃, digital flow meter highest process temperature.

Application

Vortex flow meter application
Vortex flow meter is professional in measuring non-conductive liquids, gases, saturated and superheated steam, especially for steam measurement trade settlement.
Except work as flow meter, vortex flow meter can also work as heat meter to measure the Gross/net heat of steam and hot water.
Vortex flow meter usually monitor the compressor output and evaluation of Free Air Delivery (FAD)
There has lots of Industrial gases, such as natural gas, nitrogen gas, liquefied gases, flue gases, carbon dioxide etc, all could use vortex flow meter.
In many factories, compressed air monitoring is very important, vortex flow meter also could use for process control.
Besides the different gases measurement, vortex flow meter could also used for light oil or any purified water，such as thermal oils, Desalinated water, demineralized water, RO water, boiler feed water, condensate water etc.
In the Chemicals and petrochemicals industries, there also has lots of gases or liquid could use vortex flow meter for monitoring.

Water Treatment

Food Industry

Pharmaceutical Industry

Petrochemical

Paper Industry

Chemical Monitoring

Metallurgical Industry

Public Drainage

Coal Industry

Technical Data

Table 1: Vortex Flow Meter Technical Data

Measured Medium	Liquid, Gas, Steam
Medium Temp	-40℃~+200℃; -40℃~+280℃; 40℃~+350℃
Nominal Pressure	1.6MPa;2.5MPa;4.0MPa(Other pressure can be custom,need consult supplier)
Accuracy	1.0%(Flange), 1.5%(Insertion)
Measuring range ratio	1:10(Standard air condition as reference) 1:15(Liquid)
Flow Range	Liquid:0.4-7.0m/s; Gas:4.0-60.0m/s; Steam:5.0-70.0m/s
Specifications	DN15-DN300(Flange), DN80-DN2000(Insertion), DN15-DN100(Thread), DN15-DN300(Wafer), DN15-DN100(Sanitary)
Communication	RS485 Modbus, HART
Material	SS304(Standard), SS316(Optional)
Pressure Loss Coefficient	Cd≤2.6
Vibration Acceleration Allowed	≤0.2g
IEP ATEX	II 1G Ex ia IIC T5 Ga
Ambient Condition	Ambient Temp:-40℃-65℃(Non-explosion-proof site); -20℃-55℃(Explosion-proof site) Relative Humidity:≤85% Pressure:86kPa-106kPa
Power Supply	12-24V/DC or 3.6V battery powered
Signal Output	Pulse frequency signal 2-3000Hz, Low level≤1V, high level≥6V
Signal Output	Two-wire system 4-20 signal(isolated output), Load≤500

Table 2: Vortex Flow Meter Structure Drawing

Temperature & Pressure Compensation Vortex Flow Meter ( Flange Connection: DIN2502 PN16) Structure Drawing

Caliber(mm)	Inner Diameter D1(mm)	Length L (mm)	Flange Outer Diameter D3(mm)	Central Dia of Bolts Hole B(mm)	Flange Thickness C(mm)	Bolt Hole Diameter D(mm)	Screw Quantity N
25	25	170	115	85	16	14	4
32	32	170	140	100	16	18	4
40	40	190	150	110	16	18	4
50	50	190	165	125	18	18	4
65	65	220	185	145	18	18	4
80	80	220	200	160	20	18	8
100	100	240	220	180	20	18	8
125	125	260	250	210	22	18	8
150	150	280	285	240	22	22	8
200	200	300	340	295	24	22	12
250	250	360	405	355	26	26	12
300	300	400	460	410	28	26	12

Table 3: Vortex Flow Meter Flow Range

Size(mm)	Liquid(Reference medium:normal temperature water, m³/h)		Gas(Reference medium:20℃, 101325pa condition air, m³/h)
Size(mm)	Standard	Extended	Standard	Extended
15	0.8~6	0.5~8	6~40	5~50
20	1~8	0.5~12	8~50	6~60
25	1.5~12	0.8~16	10~80	8~120
40	2.5~30	2~40	25~200	20~300
50	3~50	2.5~60	30~300	25~500
65	5~80	4~100	50~500	40~800
80	8~120	6~160	80~800	60~1200
100	12~200	8~250	120~1200	100~2000
125	20~300	12~400	160~1600	150~3000
150	30~400	18~600	250~2500	200~4000
200	50~800	30~1200	400~4000	350~8000
250	80~1200	40~1600	600~6000	500~12000
300	100~1600	60~2500	1000~10000	600~16000
400	200~3000	120~5000	1600~16000	1000~25000
500	300~5000	200~8000	2500~25000	1600~40000
600	500~8000	300~10000	4000~40000	2500~60000

Table 4: Superheated Steam Density Value (relative pressure & temperature) Unit: Kg/m3

Absolute Pressure (Mpa)	Temperature(℃)
Absolute Pressure (Mpa)	150	200	250	300	350	400
0.1	0.52	0.46	0.42	0.38
0.15	0.78	0.70	0.62	0.57	0.52	0.49
0.2	1.04	0.93	0.83	0.76	0.69	0.65
0.25	1.31	1.16	1.04	0.95	0.87	0.81
0.33	1.58	1.39	1.25	1.14	1.05	0.97
0.35	1.85	1.63	1.46	1.33	1.22	1.13
0.4	2.12	1.87	1.68	1.52	1.40	1.29
0.5		2.35	2.11	1.91	1.75	1.62
0.6		2.84	2.54	2.30	2.11	1.95
0.7		3.33	2.97	2.69	2.46	2.27
0.8		3.83	3.41	3.08	2.82	2.60
1.0		4.86	4.30	3.88	3.54	3.26
1.2		5.91	5.20	4.67	4.26	3.92
1.5		7.55	6.58	5.89	5.36	4.93
2.0			8.968	7.97	7.21	6.62
2.5			11.5	10.1	9.11	8.33
3.0			14.2	12.3	11.1	10.1
3.5			17.0	14.6	13.0	11.8
4.0				17.0	15.1	13.6

Table 5: Vortex Flow Meter Model Selection

LUGB-2

Caliber

DN15-300mm/1/2"-12"

Measured Medium

Saturated Steam

Superheated Steam

Common Gas

Liquid

Others

Nominal Pressure

0.6MPa

1.0MPa

1.6MPa

2.5MPa

4.0MPa

Nominal Temperature

-40℃~250℃

-40℃~350℃

Structure

Compact type

Remote type (converter display)

Remote type (flow computer remote display)

Connection

Flange(DN15-300mm)

PN10/PN16/PN25/PN40(DIN)

D**

A15:150#, A30:300# (ANSI)

A**

10K/20K/30K/40K (JIS)

J**

Wafer(DN15-300mm)

Thread(DN15-100mm)

Insertion(DN80-2000mm)

Body Material

SS304 (standard)

SS316

Compensation

Without

With temperature compensation

With pressure compensation

With temperature & pressure compensation

Output

4-20mA,pulse,RS485

4-20mA,pulse,HART (converter display only)

Power Supply

DC24V

3.6V Battery Powered (converter display only)

AC220V (flow computer type only)

Ex-Proof

Without

With (Exia ll CT5 Ga)

Installation

1. The installation of vortex flow meter has higher requirements, to guarantee the better accuracy and working properly. Vortex flow meter installation should keep away from the electric motors, big frequency converter, power cable, transformers, etc.
Do not install in the position where there has bends, valves, fittings, pumps etc, which could cause flow disturbances and influence the measurement.
The front straight pipe line and after straight pipe line should follow below suggestion.

Concentric Reducers Pipeline	Concentric Expansion Pipeline
Single Square Bend	Two Square Bends At Same Plane
Two Square Bends At Different Plane	Regulating Valve、Half-open Gate Valve

2. Vortex Flow Meter Daily Maintenance
Regular cleaning: The probe is an important structure of the vortex flowmeter. If the detection hole of the probe is blocked, or is entangled or wrapped by other objects, it will affect the normal measurement, resulting in inaccurate results;
Moisture-proof treatment: most of the probes have not undergone moisture-proof treatment. If the use environment is relatively humid or is not dried after cleaning, the performance of the vortex flow meter will be affected to a certain extent, resulting in poor operation;
Minimize external interference: strictly check the grounding and shielding conditions of the flow meter to ensure the accuracy of the flow meter measurement;
Avoid vibration: There are some parts inside the vortex flowmeter. If strong vibration occurs, it will cause internal deformation or fracture. At the same time, avoid the inflow of corrosive liquid.