ATWY Threaded Liquid Turbine Flowmeter from China Manufacturer -Aister Instrument (Shanghai) Co., Ltd

Introduction Features Specifications Model Selection Application Installation

Introduction

Turbine flow sensor structure: When the measured flow body flows through the sensor, under the action of fluid, the impeller is forced to rotate, and its speed is proportional to the average flow velocity of the pipeline. The rotation of the impeller periodically changes the magnetic resistance value of the magnetoelectric converter, and the magnetic flux in the detection coil changes periodically, generating the induced potential with the same rotation frequency, namely, the electrical pulse signal, after amplification by the amplifier. Send DAO display instrument display.

The ATWY threaded liquid turbine flowmeter structure is explosion-proof and can display the total flow rate, instantaneous flow rate and flow full percentage. The battery uses a long-acting lithium battery, the service life of the single-function accumulator battery can reach more than 5 years, and the service life of the multi-function display battery can also reach more than 12 months.

The threaded liquid turbine flowmeter is a kind of precision flow measuring instrument, which can be used to measure the flow and total amount of liquid with the corresponding flow integrating instrument. Widely used in petroleum, chemical industry, metallurgy, scientific research and other fields of measurement, control system. Threaded liquid turbine flowmeter sensors with sanitary fittings can be used in the pharmaceutical industry. It has the characteristics of simple structure, light weight, high precision, good repeatability, sensitive response, easy installation, maintenance and use of the new generation of threaded connected liquid turbine flowmeter.

Features

Accuracy, generally up to ±0.9888%R, ±0.5%R, high-precision up to ±0.2%R

Good repeatability, short-term repeatability can reach 0.049999%~0.1999%, it is because of its good repeatability, such as frequent calibration or online calibration can get a very high degree, is the preferred flowmeter in trade settlement

Output pulse frequency signal, suitable for total measurement and computer connection, no zero drift, strong anti-interference ability

High frequency signal (3-4kHz) can be obtained, and the signal resolution is strong

The range is wide, the large caliber can reach 1:20, and the small caliber is 1:10

Compact and light structure, easy installation and maintenance, large circulation capacity

Suitable for high pressure measurement, no need to open holes on the instrument body, easy to make high pressure instrument.

Specifications

Executive standard	Turbine flow sensor（JB/T9246-1999）
Connection mode	Thread, clamp, flange, clamp type
Accuracy	±1%R、±0.5%R、±0.2%R(to be customized)
Sensor material	304, 316 stainless steel, etc
Use conditions	Medium temperature：-20℃～+120℃ Ambient temperature：-20℃～+60℃
Use conditions	Relative humidity：5%-90% Atmospheric pressure：86Kpa～106Kpa
Signal output function	Pulse signal, 4-20mA signal
Communication output function	RS485 communication, HART protocol, etc
Working power supply	External power supply: 24VDC±15%, ripple ≤±5%, suitable for 4-20mA output, pulse output, RS485, etc
Working power supply	Internal power supply: 1 set of 3.6V10AH lithium battery, the battery voltage can work normally at 2.0-3.0V
Signal line interface	Basic model: Hausmann connector or three-core cable; Explosion-proof type, internal thread M20*1.5
Explosion-proof class	Exia II CT or Exd II BT6
Protection class	IP65 or higher customizable

Model Selection

Measure the medium, temperature, whether there is corrosion

Flow range and inside diameter of user pipe

Pressure rating

Whether to show on site

Working power supply

Signal output, communication

Whether to explosion-proof

Installation mode

Accuracy

Application

Industrial process

Energy measurement

Environmental protection engineering

Transportation

Biotechnology

Scientific experiment

Marine meteorology

Rivers and lakes

Installation

1.The sensor can be installed horizontally or vertically. When the sensor is installed vertically, the fluid direction must be upward. The liquid should fill the pipe without bubbles. When installing, the liquid flow direction should be consistent with the direction of the arrow indicating the flow direction on the sensor housing. The upstream end of the sensor should have at least 20 times the nominal diameter of the straight pipe section, the downstream end should be not less than 5 times the nominal diameter of the straight pipe section, the inner wall should be smooth and clean, no dents, scaling and peeling defects. The pipe axis of the sensor should be aligned with the adjacent pipe axis, and the gasket used for connecting the seal should not penetrate into the inner cavity of the pipe.

2.The sensor should be far away from the external electric and magnetic fields, and effective shielding measures should be taken if necessary to avoid external interference.

3.In order not to affect the normal delivery of liquid during maintenance, it is recommended to install a bypass pipeline at the installation place of the sensor.

4.When the sensor is installed in the open air, please make the amplifier and plug waterproof. The connection between the sensor and the display instrument is shown in Figure 4.

5.When the fluid contains impurities, the filter should be installed, and the filter mesh depends on the flow rate of impurities, generally 20 to 60 mesh. When free gas is mixed in the fluid, an air eliminator should be installed. The entire piping system should be well sealed.

6.The user should fully understand the corrosion of the measured medium and strictly prevent the sensor from being corroded.

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