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vortex flowmeter

vortex flowmeter
vortex flowmeter
Product Code : 24
Product Description

Relying on our state-of-the-art manufacturing unit, we are able to manufacture and supply vortex flowmeter that is broadly used in various industrial applications to measure the flow of gases, water and chemicals. It is manufactured with the aid of advanced technology using optimum grade raw material under the supervision of our skilled professionals. To ensure its high performance at clients end, this product is tested by our quality inspectors on various parameters. This product is available in different specifications to meet the exact needs of our esteemed clients. Offered vortex flowmeter can be availed at reasonable rates.

Features:

  • Clear display

  • Long functional life

  • Robust design

  • Accurate measurement

The principle of operation of vortex flowmeter

Vortex Flowmeter is based on 'Karman' principle. Flow transmitter is composed of a body with the same nominal diameter and a column with triangular transect. When a column object placed in flowing fluids ( including gas and liquid ) in pipe, a series of vortexes will be generated alternately on each side of the object as shown below ( figure 1 ).

Figure 1 The principle of operation of vortex flowmeter. The frequency of the vortex shedding is proportional to the velocity, and inverse proportional to the width of column.
f=StxV/d (1) Where: f-frequency of Karman Vortex shedding V - flow rate velocity St - Strouhal number D - width of column object From the expressions (1), by measuring frequency of Karman Vortex shedding can get velocity and instantaneousness. By testing, get the Strouhal number St. From frequency f of Karman Vortex shedding, know the velocity, and then get volume flow-rate. Output pulse number in period of time separate volume of fluid (corresponding shift pulses of fluid in unit volume), we call the coefficient of instrument K, which expression is:

K=N/Q (2) Where: K-Coefficient of instrument (Pulse number/ m3) N-Pulse number Q-Volume of fluid (m3) HQ series vortex flowmeter utilize piezo-crystal to measure frequency of Karman Vortex shedding. As the vortex separation on both sides of column, produce pressure pulse, and installed in the cylinder behind in the wake of the probe piezo-crystal in probe feel alternating charge. Convert the alternating charge from piezoelectric unit into voltage. Alternating charge signal output by voltage frequency signal (sensor) after disposed by detection amplifier, or convert 4-20mA standard signal output proportionally with flow.


FLOW RANGES

Chart 1 air flow range (kg/h)
DN (MM) MIN (KG/HR) USVAL (KG/HR) MAX (KG/HR)
25 0 - 1.14 0-78 0-204
40 0-2.90 0-194 0-204
50 0-4.57 0-310 0-822
80 0-11.7 0-775 0-2106
100 0-18.3 0-1292 0-3291
150 0-41.1 0-2584 0-7404
200 0-73.1 0-5168 0-13161
250 0-114 0-7752 0-20564
300 0-165 0-11162 0-29613


Chart 2: Flow measuring max limit of some gas (Nm3 /h)* *Standard: T=0, P=1.01325x105Pa Remarks: the unit of flow rate(kg/h,t/h,Nm3/h,Nkm3/h)


DN (MM) CO2 N2 O2 H2
25 60 60 60 28
40 150 150 150 70
50 240 240 240 112
80 600 600 600 282
100 1,00 1,00 1,00 470
150 2,000 2,000 2,000 940
200 4,000 4,000 4,000 1,880
250 6,000 6,000 6,000 2,820
300 8,640 8,640 8,640 4,060
400 15,360 15,360 15,360 15,360
500 24,000 24,000 24,000 11,280
600 34,560 34,560 34,560 16,243
700 47,040 47,040 47,040 22,108
800 61,440 61,440 61,440 28,876
900 77,760 77,760 77,760 77,807
1000 96,000 96,000 96,000 45,120
1200 138,240 138,240 138,240 64,972
1500 216,000 216,000 216,000 101,520



MODEL SELECTION AND CODING OF VORTEX FLOWMETER



AV 96 O1 - O2 - O3 - O4 - O5 - O6 - O7 - O8 - O9 - O10 - O11 - O12

  • Installation form: 1. In-line type  3. Insertion type
  • Outer diameter/Wall thickness:
  • Ex-proof: 1.Normal i. intrinsic safety
  • Protect class: 1. IP65 (Integral type) , IP68 (Separable type), IP68 (Submerged separable type) .
  • Anticorrosion: 1.Stainless steel  2.316L  3. Others
  • Temperature: 1.120, 2.120
  • Pressure: 1. 0-2.5MPa  2. 2.5-6.0MPa 3. Others
  • Power: 1.Battery (no signal output)  2. 24VDC
  • Output: 1.Three-wire system frequency output
  • 4~20mA output 4~20mA output + HART 4. No output signal
  • Medium: L: Liquid  G: Gas  S: Steam
  • Display: 1. Scene shows (intelligent)  2. No scene shows
  • MAX. flow rate:
    Sample 1: AV961-219/8.5-i121112S2-20T/h Indication: in-line type, outer diameter is 219mm, intrinsic safety type, integral type, stainless steel, medium temperature>120 pressure 2.5Mpa, 24VDC power supply, 4-20mA output, steam medium, no field display, MAX flow 20T/h. Sample 2: AV963-273/11-1111114L1-1200m/h Indication: insertion type, outer diameter is 273mm, Normal, integral, stainless steel, medium temperature <120, pressure 2.5Mpa, Battery supply, no signal output, liquid medium, field display, MAX flow 1200m3/h.
HE MEASUREMENT RANGE OF FLOWMETER UNDER STANDARD CONDITION (TABLE 1)

Vortex flowmeter (VSF) is a kind of the vibration meters. It simple configuration, and install conveniently. It can measure and control various liquid (e.g.: water, oil, petroleum, acid, alkali and different chemical fluids) gas (e.g.: air, oxygen, N2, natural gas, coal gas), and steam (e.g.: saturation steam, overheated water vapor).

DN FLOW - RATE m3/h
L G S
25 0.8-12 7.6-60 8-120
40 2-30 18-150 20-300
50 3-50 30-240 30-450
80 10-130 70-600 100-1300
100 20-200 120-1000 200-2000
150 45-450 240-2000 450-4500
200 90-900 480-4000 900-9000
250 125-1250 750-6000 1000-13600
300 180-1800 1080-8640 1080-16200
400 192-3200 1920-15360 1920-28800
500 300-5000 3000-24000 3000-45000
600 432-7200 4320-34560 4320-64800
700 588-9800 5880-47040 5880-88200
800 68-12800 7680-61440 7680-115200
900 972-16200 9720-77760 9720-145800
1000 1200- 20000 12000-96000 12000-180000
1200 1728-28800 17280-138240 17280-259200
1500 2700-45000 27000-216000 27000-405000
2000 4800-80000 48000-3284000 48000-720000


Standard condition:

  • Gas: normal temperature and pressure (t=20, Pn=0.1MPa, 0=1.292Kg/m3)
  • Liquid: normal temperature(t=200=1000Kg/m3)
  • Steam: saturation steam (t=143, Pn=0.4MPa,0=2.124Kg/m3)

Normal AD MEASUIE RANGE Nm 3/h
0MPaG 0.1MPaG 0.2MPaG 0.4MPaG 0.6MPaG 0.8MPaG 1MPaG 1.5MPaG 2MPaG
25 7.2-60 10.2-120 12.5-180 16.1-300 16.1-300 21.6-540 23.9-660 28.8-960 33.0-1260
40 18-150 25.5-300 31.2-450 40.2-750 45.3-1050 54-1350 59.7-1650 72-2400 82.5-3150
50 30-240 42.4-480 52.0-720 67.1-1200 79.4-1680 90-2160 99.5-2640 120-3840 137-5040
80 70-600 99.0-1200 121-1800 157-3000 185-4200 210-5400 232-6600 280-9600 321-12600
100 120-1000 170-2000 208-3000 268-5000 317-7000 360-9000 398-11000 480-16000 550-21000
150 240-2000 339-4000 415-6000 537-10000 635-14000 720-18000 796-22000 960-32000 1100-42000
200 480-4000 679-8000 831-12000 1073-20000 1270-28000 1440-36000 1592-44000 1920-64000 2200-84000
200 480-3840 679-7680 831-11520 1073-19200 1270-16880 1440-34560 1592-42240 1920-61440 2200-80640
250 750-6000 1061-12000 1299-18000 1677-30000 1984-42000 2250-54000 2487-66000 3000-96000 3437-126000
300 1080-8640 1527-17280 1871-25920 2415-43200 2857-60480 3240-77760 35821-95040 4320-138240 4949-181440
400 1920-15360 2715-30720 3326-46080 4293-76800 5080-107520 5760-138240 6368-168960 7680-245760 8799-322560
500 3000-24000 4243-48000 5196-72000 6708-120000 7937-168000 9000-21600 9950-264000 12000-384000 13748-504000
600 4320-34560 6109-69120 7482-103680 9660-172800 11430-241920 12960-311040 14328-380160 17280-552960 19797-725760
700 5880-47040 8316-94080 10184-141120 13148-235200 15557-329280 1764-423360 19502-517740 23520-752640 26946-987840
800 7680-61440 10861-122880 13302-184320 17173-307200 20319-430080 23040-552960 25472-675840 30720-983040 35194-1290240
900 9720-77760 13746-155520 16836-233280 21735-380000 25717-544320 29160-699840 32238-855360 38880-1244160 44543-1632960
1000 12000-96000 16971-192000 20785-288000 2683-480000 31749-672000 36000-864000 39799-1056000 48000-1536000 54991-2016000
1200 17280-138240 24438-276480 29930-414720 38639-691200 45719-967680 51840-1244160 57311-1520640 69120-2211840 79187-2903040
1500 27000-216000 38184-432000 46765-648000 6037-1080000 71435-1512000 81000-194400 89549-2376000 108000-3456000 123730-4536000
2000 48000-384000 67882-768000 83138-115200 107331-1920000 126996-2688000 140000-3456000 159198-4224000 192000-6144000 192000-6144000