ATLU Precession Vortex Flowmeter from China Manufacturer - Aister Instrument (Shanghai) Co., Ltd

Introduction Features Specifications Model Selection Application Installation

Introduction

Intelligent precession vortex flowmeter is a new type of gas flow meter developed by our company. The flowmeter integrates the function of flow, temperature and pressure detection, and can automatically compensate the temperature, pressure and compression factor. It is an ideal instrument for gas measurement in petroleum, chemical industry, electric power, metallurgy and other industries.

Intelligent precession vortex flowmeter working principle:
The flow profile of the flow sensor is similar to the profile of a venturi tube. A set of helical vane is arranged on the inlet side. When the fluid enters the flow sensor, the vane forces the fluid to produce a violent vortex flow. When the fluid enters the diffusion section, the vortex flow begins to rotate twice under the action of backflow, forming a gyroscopic vortex precession phenomenon. The precession frequency is proportional to the flow rate and is not affected by the physical properties and density of the fluid, and the detection element can measure the secondary rotational precession frequency of the fluid to obtain good linearity in a wide flow range. The signal is amplified, filtered, and transformed into a pulse signal proportional to the flow rate by the preamplifier, and then sent to the microprocessor for integration processing together with the temperature, pressure and other detection signals, and the measurement results are displayed on the LCD screen (instantaneous flow, cumulative flow and temperature and pressure data).

The smart precession vortex flowmeter consists of the following seven basic components:
1. Vortex generator,2. Shell,3. Intelligent flowmeter integrator, 4. Temperature sensor,5. Pressure sensor,6. Piezoelectric crystal sensor,7.Disrotator

Features

No mechanical moving parts, not easy to corrode, stable and reliable, long life, long-term operation without special maintenance;

16-bit computer chip, high integration, small size, good performance, strong machine function;

Intelligent flowmeter set flow probe, microprocessor, pressure, temperature sensor in one, take built-in combination, make the structure more compact, can directly measure the flow of fluid, pressure and temperature, and automatically real-time tracking compensation and compression factor correction;

The dual detection technology can effectively improve the detection signal strength and suppress the interference caused by pipeline vibration.

The flow measurement range is wide (qmax/qmin=15 ~ 20), and it can work effectively in some small flow areas that the orifice plate and vortex flowmeter cannot get involved in.

Intelligent seismic technology is adopted to effectively suppress the interference signal caused by vibration and pressure fluctuation;

Chinese character dot matrix display, display number, intuitive and convenient reading, can directly display the volume flow under the working state, the volume flow under the standard state, the total amount, as well as the medium pressure, temperature and other parameters;

Using EEPROM technology, easy parameter setting, can be saved, and can save up to one year of historical data;

The converter can output frequency pulse, 4 ~ 20mA analog signal, and has RS485 interface, can directly network with the microcomputer, transmission distance up to 1.2km;

010

The meter head can be rotated 360 degrees, easy to install and use; The whole machine has low power consumption and can be powered by internal battery or external power supply.

Specifications

Performance	Technical parameter
Diameter(mm)	20	25	32	50	80	100	150	200
Flow range(M³/h)	1.5~15	3~30	6~60	10~150	28~400	80~900	150~1800	360~3600
Accuracy	1.0~1.5%
Repeatability	Less than 1/3 of the basic error limit
Working pressure(Mpa)	1.6Mpa,2.5Mpa,4.0Mpa,6.3Mpa；Special pressure can consult customer service
Use environment	Ambient temperature：-30℃~+65℃
	Relative humidity：5%~95%
	Medium temperature：-20℃~+80℃
	Atmospheric pressure：86Kpa~106Kpa
Operating voltage	24VDC+3.6V battery powered, removable battery
Output signal	4-20mA，pulse output，RS485，alarm output
Applicable medium	All gases (except those with corrosion and moisture)
Explosion-proof mark	ExiaIIT6Ga

Model Selection

01 Measure the medium, temperature, whether there is corrosion

02 Flow range and inside diameter of user pipe

03 Pressure rating

04 Whether to show on site

05 Working power supply

06 Signal output, communication

07 Whether to explosion-proof

08 Installation mode

09 Accuracy

Application

Precession vortex flowmeters are suitable for industrial processes

Precession vortex flowmeters are suitable for energy metering

Precession vortex flowmeter is suitable for environmental protection projects

Precession vortex flowmeters are suitable for transportation

Precession vortex flowmeters are suitable for biotechnology

Precession vortex flowmeters are suitable for scientific experiments

Precession vortex flowmeter is suitable for Marine meteorology

Precession vortex flowmeter is suitable for rivers and lakes

Installation

1.When the flow meter is installed, it is strictly prohibited to weld directly at the inlet and outlet flanges to avoid burning the internal parts of the flow meter.

2.The newly installed or repaired pipeline must be cleaned, and the flow meter can be installed after removing the debris in the pipeline.

3.The flowmeter should be installed in a place that is easy to maintain, free from strong electromagnetic field interference, strong mechanical vibration and thermal radiation.

4.Flowmeters should not be used in the case of frequent flow interruption and strong pulsating flow or pressure pulsation.

5.When the flowmeter is installed outdoors, the upper part should be covered to prevent rain immersion and sun exposure from affecting the service life of the flowmeter.

6.The flow meter can be installed at any Angle, and the flow direction of the fluid should be consistent with the flow direction marked on the flow meter.

7.In pipeline construction, it should be considered to install expansion pipes or bellows to avoid serious stretching or breaking of the flow meter.

8.The flow meter should be installed coaxial with the pipe and prevent the seal and butter from entering the pipe cavity.

9.When the external power supply is used, the flow meter must be reliably grounded, and the ground wire must not be shared with the strong current system. When the pipeline is installed or repaired, the ground wire of the welding system must not be bonded with the flow meter.

10.In order not to affect the normal transmission of fluid and facilitate maintenance, bypass pipelines are required to be installed, and straight pipe sections ≥3DN in front and ≥1DN in back are guaranteed.

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