AT201 Ultrasonic Flow Meter from China Manufacturer - Aister Instrument (Shanghai) Co., Ltd

Introduction Features Specifications Model Selection Application Installation

Introduction

Handheld (portable) ultrasonic flowmeter with external clip-on sensing to measure liquid flow. The installation process is extremely simple, and the all-Chinese man-machine interface makes it easier to operate. The measurement process does not need to destroy the pipeline, do not need to stop production, the sensor does not contact with the measured medium, no pressure loss, and at the same time has the characteristics of battery power, small size, light weight, easy to carry. It can be said that the real sense of mobile measurement flow, online detection.

Ultrasonic time difference measurement method refers to the measurement method of fluid flow along the flow direction of the fluid average velocity by using the time difference of two ultrasonic signals propagating in the same stroke of the flowing fluid.

On the basis of the original flow meter, temperature sensor and temperature integrated module are installed. The matched temperature sensor is installed in the inlet and outlet positions of the cold (hot) quantity exchange loop respectively, which is used to collect the temperature signal of the inlet and outlet. The temperature difference is calculated by the integrated calculation module to obtain the value of the cold (heat) energy released or absorbed by the heat carrying or cooling medium from the inlet to the outlet.

Ultrasonic heat and cold meters are mostly used to measure the heat released or absorbed by the heat exchange system with water as the medium, which can be used for heating supply and can also be used in air conditioning refrigeration systems.

Features

1. It is equipped with a magnetic mounting guide rail, which can be adsorbed on the outside of the pipe wall. Easy to install, saving installation time and cost.

2. Large measuring range, the use of a set of sensors can achieve all measuring range of pipe diameter measurement.

3. New energy meter/cold (heat) meter function, can be expanded to portable energy meter/cold (heat) meter.

4. Ultrasonic flowmeter is widely used in water treatment, thermal power plant, petrochemical, building air conditioning system and other fields.

Specifications

Performance	Technical parameter
Measuring range	±0.03 ft/s ~ ±40 ft/s (±0.01 m/s~ ±12 m/s)
Accuracy	±1%
Diameter range	1"~48"(25mm~1200mm)
Measuring medium	Single conducting liquid medium
Measurable pipe	Carbon steel, stainless steel, PVC pipe or other dense sound conductive pipe
Output	Analog output: 4~20mA, maximum load 750Ω, Modbus: RS485
SD card storage	16G
Set the storage interval	1 ~ 99999 s
Keyboard	Digital film keying
Display screen	240*128 LCD display (with backlight)
Power source	Rechargeable lithium battery with 3000mAh battery capacity. Under normal use, a full charge can be used for 16 hours.
Operating temperature	Transmitter: -40℃~ 60 ℃, sensor: -40℃~80℃, standard type; The range from -40 ° C to 130 ° C is optional
Measure the ambient relative humidity	0-99%
Protection class	Transmitter IP65, sensor IP68
Cable	Twisted pair shielded cable, standard length of 5 meters

Model Selection

01 Measure the medium, temperature, whether there is corrosion

02 Measuring range and pipe diameter range

03 Pressure rating

04 Working power supply

05 Signal output, communication

06 Whether to explosion-proof

07 Installation mode

08 Precision class

Application

Industrial process

Energy measurement

Environmental protection engineering

Transportation

Biotechnology

Scientific experiment

Marine meteorology

Rivers and lakes

Installation

Before installing the ultrasonic flowmeter, you first need to select a suitable installation location. The proper installation position should meet the following requirements:
1. The measuring section should be selected in the straight pipe section to avoid interference with fluid flow caused by elbow and pump outlet;
2. The upstream and downstream of the measurement section should maintain a certain length of the straight pipe section to ensure the stability of the fluid;
3. Select a vibration-free, noise-free and corrosion-free environment to ensure the normal operation of the ultrasonic sensor.

Install sensors and converters

1. The ultrasonic sensor is installed on the selected measurement section, generally installed on the side wall of the pipeline;
2. Use a suitable fixing device to fix the sensor on the pipeline to ensure the tightness of the sensor and the pipeline;
3. Connect the cable between the sensor and the converter, and keep the cable intact and waterproof.

Connect the power and signal cables

1. Connect the power cord and ground wire of the converter, and ensure the stability of the power supply;
2. Connect the output signal line of the converter to the corresponding display instrument or recorder.

Commissioning and calibration
1. After installation, it is necessary to debug and calibrate the ultrasonic flowmeter to ensure the accuracy of the measurement results;
2. According to the operation instruction of ultrasonic flowmeter, set relevant parameters and carry out zero calibration and range calibration;
3. Flow calibration can be performed using standard equipment with known flow rates, or using other flow meters for comparison measurements.

Matters needing attention

1. During the installation process, attention should be paid to avoid collision and damage of the ultrasonic sensor;
2. Regularly check the cleaning status of the ultrasonic sensor and remove dirt and oxides attached to the surface of the sensor in time;
3. Pay attention to the tightness between the sensor and the pipeline to prevent leakage;
4. Avoid external interference of ultrasonic sensors, such as electromagnetic interference and vibration interference.

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