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Yueheng Instrument & Apparatus

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Metal tube float flowmeter

○ Metal tube float flowmeter

○ Micro metal tube float flowmeter

○ All stainless steel metal tube float flowmeter

○ Magnetic filter

Glass rotameter

○ Imported series glass rotameter

○ Domestic series glass rotameter

Turbine flowmeter

Vortex Flowmeter

Constant current purging device

Plastic rotameter

○ Plastic rotameter

○ Panel flowmeter

○ Pipeline flowmeter

Vortex Flowmeter

Summary
Vortex flowmeter is a new type of flowmeter with international advanced level, which is developed based on the principle of Karman Vortex Street. It is suitable for measuring superheated steam, saturated steam, general gas and liquid.
Product features
◆ Simple structure, no moving wear parts.
◆ High measurement accuracy and reliability, without on-site commissioning.
◆ It can transmit flow signals at a long distance, and can be connected with computers to realize centralized management.
◆ The amplification board adopts a unique design, which is universal for gas and liquid.
Technical indicators
◆ Accuracy class: 1.0 1.5
◆ Nominal pressure: 1.6MPa, 2.5MPa, 4.0MPa and above
◆ Temperature of measured medium: - 40 ℃~350 ℃
◆ Pressure loss: resistance coefficient cd ≤ 2.4
◆ Power supply: 12~24VDC
◆ Explosion-proof grade: la Ⅱ CT6 (intrinsically safe explosion-proof)
◆ Output signal: voltage pulse low level ≤ 1V high level ≥ 6V, standard current signal 4~20mA
◆ Accuracy class: 1.0 1.5
◆ Nominal pressure: 1.6MPa, 2.5MPa, 4.0MPa and above
◆ Temperature of measured medium: - 40 ℃~350 ℃
◆ Pressure loss: resistance coefficient cd ≤ 2.4
◆ Power supply: 12~24VDC
◆ Explosion-proof grade: la Ⅱ CT6 (intrinsically safe explosion-proof)
◆ Output signal: voltage pulse low level ≤ 1V high level ≥ 6V, standard current signal 4~20mA
Flow range

Sensor diameter (mm)	Liquid (calibration medium: normal temperature water)		Gas (calibration medium: air at 20 ℃ 101325Pa)
Sensor diameter (mm)	Standard	Extensibility	Gas (calibration medium: air at 20 ℃ 101325Pa)
15	0.8~6	0.5~8	6~40	5~50
20	1~8	0.6~12	8~50	6~60
25	1.5~12	0.8~16	10~80	8~120
40	2.5~30	2~40	250~200	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	60~120
100	12~200	8~250	120~1200	100~2000
125	20~300	12~400	160~1600	150~3000
150	30~400	18~160	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

Overall dimension

Caliber	L1	L2	D1	D2	H	D3	N
20	65	95	125	100	460	13	4
25	65	95	125	100	460	13	4
40	75	109	145	110	470	13	4
50	75	109	160	125	481	17	4
65	75	117	180	145	497	17	6
80	80	122	195	160	510	17	6
100	90	132	230	190	544	17	8
125	100	146	245	210	564	17	8
150	120	170	280	240	594	21	8
200	150	200	335	295	646	21	12
250	160	214	405	355	708	21	12
300	170	224	460	410	760	21	12

Instrument installation

The sensor shall be installed on the horizontal, vertical, inclined (liquid flow from bottom to top) pipeline with the same diameter. The upstream and downstream of the sensor shall be equipped with a certain length of straight pipe section, which shall meet the requirements of 15~20D for the front straight pipe section and 5~10D for the rear straight pipe section. The pipeline near the liquid sensor shall be filled with the measured liquid. The sensor shall not be installed on the pipeline with strong mechanical vibration. The inner diameter of the straight pipe section shall be consistent with the diameter of the sensor as much as possible. If it cannot be consistent, the pipe slightly larger than the diameter of the sensor shall be used, and the error shall be ≤ 3%, not more than 5mm. If the measured medium contains many impurities, a filter shall be installed beyond the length required by the straight pipe section upstream of the sensor. The sensor shall not be installed in places with strong electromagnetic interference, small space and inconvenient maintenance.

Summary

On-site display vortex flowmeter has the characteristics of miniaturization, micro-power consumption, intelligence, etc., realizing the measurement, display and integration of flow parameters. The field display instrument is used in an environment where the power supply is not convenient: the instrument is designed with an ultra-low power consumption chip, which is convenient to operate, and is at the leading level among similar domestic products.

Model LUGB-X liquid crystal type
Double-row LCD, 8-digit digital display
User can set small signal cutoff
4~20mA two-wire current output (equipped according to user's order requirements)
Online temperature compensation, manual fixed value density compensation
12V~24V or 3.6V lithium battery power supply

Flow range of plug-in vortex flowmeter

The plug-in vortex flow sensor is applicable to the measurement of superheated steam, saturated steam, general gas and liquid above DN200 pipe; It can be displayed on site or output remotely; Its installation is convenient and the price is cheap; Accuracy: ± 1.5%, ± 2.5%.

Drift diameter DNmm	200	250	300	350	400	450	500
liquid m³/h	55~570	88~885	125~1275	170~1735	225~2265	286~2670	350~3540
Gas m³/h	560~4530	880~7070	1270~10180	1730~13860	2260~18100	2860~22905	3530~28275
Drift diameter DNmm	600	700	800	900	1000	1100	1200
liquid m³/h	505~5090	690~6930	900~9050	1145~11450	1410~14140	1710~17110	2035~20360
Gas m³/h	5080~40715	6925~55420	9045~72380	11450~91605	14135~113095	17100~136840	20235~162850
Drift diameter DNmm	1300	1400	1500	1600	1800	2000
liquid m³/h	2385~23895	2770~27710	3170~31800	3610~36200	4580~45850	5650~56550
Gas m³/h	23890~191125	27705~221160	31700~254455	36105~289510	45750~366410	56545~452365

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