Vortex flowmeter

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Vortex flowmeter

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Key words:

Vortex flowmeter

Details

- Commodity name: Vortex flowmeter
Product Overview
The vortex flowmeter is a new type of intelligent flow instrument developed using the Karman vortex street principle and electromagnetic induction principle, as well as digital signal processing technology. This product features high sensitivity and low power consumption and can be widely used in industries such as petroleum, chemical engineering, metallurgy, brewing, dyeing and finishing, medicine, food, and environmental protection.
Working Principle
The vortex flowmeter is designed based on Karman vortex street and electromagnetic induction principles. When the fluid medium flows past the trapezoidal vortex generator, two rows of regularly arranged vortices will be alternately released from its downstream sides. Within a certain velocity range, the vortex shedding frequency is directly proportional to the mean flow velocity.
Equipment Composition
The vortex flowmeter consists of two parts: a sensor and a converter. It integrates flow measurement and local display and is equipped with a variety of standard external signal output interfaces.
Key Features and Competitive Edges
- Dual power supply design: It can be powered by an internal 3V to 3.6V lithium battery, an external 24V DC power supply, or both simultaneously.
- Intelligent integrated design: It has a powerful on-site display that visually presents the acquired data to the users and allows for convenient parameter setting and modifications.
- Signal output functions: 4 to 20 mA current output, RS-485 communication, and various other standard interfaces.
- It has good anti-vibration and anti-interference capabilities.
- The sensor is made of corrosion-resistant stainless steel. It has no moving parts inside, resulting in a long service life.
- It supports a low minimum flow rate and a wide range ratio and provides high measurement accuracy.
Technical Specifications
- Nominal bore size, mm: DN25 to DN300.
- Nominal pressure, MPa: 1.0, 1.6, 2.5, 4.0, 16, 25, 32, 42.
- Accuracy: Class 1.0, Class 1.5.
- Working voltage, VDC: (Internal) +2.7 to +3.6, (External) +18 to +36.
- Output signal: Standard two-wire 4 to 20 mA current output, pulse output.
- Communication interface: RS-485, RS-232C, MODBUS, REMOTE (HART).
Flow range:
Nominal diameter (mm)
25
32
40
50
65
80
100
150
200
300
Lower flow rate (m³/h)
0.5
0.75
1.0
1.5
3.5
6.0
9.0
20
35
100
Upper limit flow (m³/h)
10
15
20
30
70
120
180
400
700
2000

None

Nominal diameter (mm)	25	32	40	50	65	80	100	150	200	300
Lower flow rate (m³/h)	0.5	0.75	1.0	1.5	3.5	6.0	9.0	20	35	100
Upper limit flow (m³/h)	10	15	20	30	70	120	180	400	700	2000