Clamp on vortex flowmeter

NegotiableUpdate on 07/01

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

1、 Product Overview: The LUGB-80 series clamp type vortex flowmeter is mainly used for flow measurement of industrial pipeline media fluids, such as gases, liquids, vapors, and other media. Its characteristics are small pressure loss, large range, high accuracy, and almost no measurement of volumetric flow rate under working conditions

Product Details

1、 Product Overview

The LUGB-80 series clamp type vortex flowmeter is mainly used for flow measurement of industrial pipeline media fluids, such as gases, liquids, vapors, and other media. Its characteristics are small pressure loss, large range, high accuracy, and almost unaffected by parameters such as fluid density, pressure, temperature, viscosity, etc. when measuring volumetric flow rate under working conditions. No movable mechanical parts, therefore high reliability and low maintenance. The instrument parameters can remain stable for a long time. The plug-in vortex flowmeter adopts a piezoelectric stress sensor, which has high reliability and can operate within the working temperature range of -50 ℃ to+250 ℃. It has both analog standard signals and digital pulse signal outputs, making it easy to use in conjunction with digital systems such as computers. It is a relatively advanced and ideal flow meter.

2、 Technical parameters

1. Measurement medium: gas, liquid, vapor;

2. The caliber specification for flange card mounted calibers is 25, 32, 50, 80, and 100;

3. The selection of flange connection caliber is 100, 150, 200;

4. The normal measurement range for flow rate is Reynolds number 1.5 × 104 to 4 × 106; Gas velocity of 5-50m/s; Liquid 0.5-7m/s;

5. Measurement accuracy of 1.0 level and 1.5 level;

6. Temperature of the tested medium: normal temperature -25 ℃ -100 ℃; 7. High temperature -25 ℃~150 ℃ -25 ℃~250 ℃;

7. Output signal pulse voltage output signal high level 8-10V low level 0.7-1.3V;

8. Pulse duty cycle of about 50%, transmission distance of 100m;

9. Pulse current remote transmission signal 4-20 mA, transmission distance of 1000m;

10. Instrument operating environment temperature: -25 ℃~+55 ℃ humidity: 5-90% RH50 ℃;

11. Material: stainless steel, aluminum alloy;

12. Power supply DC24V or lithium battery 3.6V;

3、 Flow Range Table

Table 1: Liquids and Gases (Unit: m)3/h)

orifice （DN）	Liquid flow range （m3/h）	Output frequency range （Hz）	Gas flow range （m3/h）	Output frequency range （Hz）
15	1.2～6.2	90~900	5~25	265~2640
20	1.5～10	40~396	8~50	218~1982
25	1.6～16	32~325	10~70	172~1420
32	2~20	20~250	15~150	130~1350
40	2.5～25	13~130	22~220	115~1147
50	3.5～35	9~93	36~320	96~854
65	6~60	8~82	50~480	61~583
80	10~100	6~65	70~640	45~417
100	15~150	5~50	130~1100	43~367
125	25~250	5~47	200~1700	33~290
150	40~400	4~40	280~2240	27~221
200	80~800	3~33	580~4960	24~207
250	140~1400	3~26	970~8000	20~171
300	200~2000	2~22	1380~11000	17~136

4、 Product Selection Table

model	orifice
RL-LUGB	DN15-900
	code	Installation method
	A1	centralizers
	A2	Flange style
	A3	plug-in
		code	measured media
		B1	Liquid
		B2	gas
		B3	steam
			code	Material of flow probe
			C1	304
			C2	316
				code	Sensor material
				K1	304
				K2	316
				code	accuracy class
				E1	Level 1.0
				E2	Level 1.5
				code	signal output
				F1	4-20Ma (two-wire system)
				F2	4-20Ma (three wire system)
				F3	rs485 communication
				F4	RS485 Modbus
				F5	HART
				F6	Frequency output
				F7	local display
				F8	4-20mA+frequency+RS485
				code	temperature and pressure compensation
				N	No temperature and pressure compensation
				Y	Temperature and pressure compensation
				code	temperature
				T1	Normal temperature type
				T2	Medium temperature type
				T3	High temperature type
				code	pressure rating
				P3	1.6MPa
				P4	2.5MPa
				P5	4.0MPa
				P6	6.3MPa
				code	power supply
				D1	Powered by a 3.6V battery
				D2	DC24V power supply
				code	protection grade
				U1	IP65 non explosion proof
				U3	IP65 explosion-proof

Note: Recommended for caliber DN300 and aboveinsertIn type vortex flowmeter, customizable.

5Installation precautions

1. Vortex flow meters should not be installed in places with mechanical vibrations, such as the inlet and outlet of pumps or compressors. Although many vortex street manufacturers have taken many measures to reduce the impact of vibration on vortex street flowmeters, such as using mass balance sensing systems and adaptive digital signal processing technology (ADSP) for imported vortex street flowmeters, which provide excellent anti vibration performance. However, these measures can only alleviate the impact of vibration and cannot fundamentally eliminate it.

2. The generation of vortex street must be in a stable flow field, so vortex street flowmeters, like throttling differential pressure flowmeters, have certain requirements for straight pipe sections. The length of the straight pipe section directly affects the rated accuracy of the vortex flowmeter. Taking the DN80 clamp type vortex flowmeter as an example, the length of the upstream straight pipe section should be at least 10 times the pipe diameter, and the length of the downstream straight pipe section should be at least 5 times the pipe diameter. After meeting the minimum straight pipe section requirement, the flow rate can be corrected by a correction factor. This correction factor can be set through device management software or handheld devices.

3. In general, vortex flowmeters installed in horizontal, vertical, or inclined pipelines can meet the accuracy requirements. The best practice for installing on a horizontal pipeline is to keep the vortex generator in a horizontal plane, which can prevent sediment from interfering with the frequency of the vortex generator when measuring liquids. When measuring gases or vapors, it is possible to prevent liquid interference with the frequency of vortex generators.

4. To ensure measurement accuracy, vortex flowmeters need to be calibrated regularly. The calibration work of vortex street is generally completed in factories or laboratories, but it should be noted that the calibration environment of the factory is different from the actual usage environment. For example, the factory calibration of the DN80 clamp type vortex flowmeter is performed by default on the DN80 pipeline. However, in actual engineering installation applications, it is definitely not possible to calibrate the pipe wall thickness for DN80, so there is a certain difference in inner diameter. In practical applications, correction factors should also be considered to correct it.

5. The vortex flowmeter should be installed after pipeline flushing and blowing to avoid impurities entangling the vortex and affecting the generation and frequency of vortices.

Physical picture display of clamp type vortex flowmeter（wafer typePulse without displaywafer typeWith display outputwafer typeEquipped with temperature and pressure compensation

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