Handheld Ultrasonic Flow Meter from China Manufacturer

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Ultrasonic flow meter

Liquid flow meter

Water Flow Meter

Introduction

Application

Technical data

Installation

Introduction

Q&T handheld ultrasonic flow meter realizes non-contact measurement of liquid flow. Install the sensor on the outer wall of the pipeline to complete the flow measurement. It has the characteristics of small size. Convenient carrying and accurate measurement.
Handheld Ultrasonic Flow meter Principle Working: Time-transit measurement principle is adopted, the signal transmitted by one flow meter transducer passes through the pipe wall, the medium, and the other side pipe wall, and is received by another flow meter transducer. At the same time, the second transducer also transmits the signal received by the first transducer. The influence of the medium flow rate, there is a time difference, and then the flow value Q can be obtained.

Application

Handheld Ultrasonic Flow Meter Applications
This flow meter is widely used in tap water, heating, water conservancy, metallurgy chemical,machinery, energy and other industries. It can be used for production monitoring, flow verification, temporary detection, flow inspection, water meter balance debugging,heating network balance debugging,energy-saving monitoring, and it is a necessary tool and meter for timely flow detection.

Water treatment

Food Industry

Pharmaceutical Industry

Petrochemical

Paper industry

Chemical monitoring

Metallurgical industry

Public drainage

Coal industry

Technical data

Table 1: Handheld Ultrasonic Flow meter Technology Parameter

Linearity	0.5%
Repeatability	0.2%
Accuracy	±1% of reading at rates>0.2 mps
Response Time	0-999 seconds, user-configurable
Velocity	±32 m/s
Pipe Size	DN15mm-6000mm
Rate Units	Meter, Feet, Cubic Meter, Liter, Cubic Feet, USA Gallon, Imperial Gallon, Oil Barrel, USA Liquid Barrel, Imperial Liquid Barrel, Million USA Gallons. Users configurable
Totalizer	7-digit totals for net, positive and negative flow respectively
Liquid Types	Virtually all liquids
Security	Setup values Modification Lockout. Access code needs unlocking
Display	4x8 Chinese characters or 4x16 English letters
Communication Interface	RS-232C, baud-rate: from 75 to 57600. Protocol made by the manufacturer and compatible with that of the FUJI ultrasonic flow meter. User protocols can be made on enquiry.
Transducers	Model M1 for standard, other 3 models for optional
Transducer Cord Length	Standard 2x5 meters, optional 2x 10 meters
Power Supply	3 AAA Ni-H built-in batteries. When fully recharged it will last over 10 hours of operation.100V-240VAC for the charger
Data Logger	Built-in data logger can store over 2000 lines of data
Manual Totalizer	7-digit press-key-to-go totalizer for calibration
Housing Material	ABS
Case Size	100x66x20mm
Handset Weight	514g (1.2 lbs) with batteries

Table 2: Handheld Ultrasonic Flow Meter Transducer Selection

Type	Picture	Specification	Measuring range	Temperature range
Clamp on type		Small-size	DN20mm~DN100mm	-30℃~90℃
		Middle- size	DN50mm~DN700mm	-30℃~90℃
		Large -size	DN300mm~DN6000mm	-30℃~90℃
High temperature clamp on type		Small-size	DN20mm~DN100mm	-30℃~160℃
		Middle- size	DN50mm~DN700mm	-30℃~160℃
		Large -size	DN300mm~DN6000mm	-30℃~160℃
Mounting bracket clamp on		Small-size	DN20mm~DN100mm	-30℃~90℃
		Middle- size	DN50mm~DN300mm	-30℃~90℃
		King-size	DN300mm~DN700mm	-30℃~90℃

Installation

Handheld ultrasonic flow meter installation requirements
The state of the pipeline for measuring the flow will greatly affect the measurement accuracy, the detector installation location should be selected in a place that meets the following conditions:
1. It must be ensured that the straight pipe section where the probe is installed is: 10D on the upstream side(D is the pipe diameter), 5D or more on the downstream side, and there must be no factors that disturb the fluid(such as pumps,valves, throttles, etc.) in the 30D on the upstream side. And try to avoid the unevenness and welding position of the pipeline under test.
2. The pipeline is always full of liquid, and the fluid should not contain bubbles or other foreign objects. For horizontal pipelines, install the detector within ±45°of the horizontal centerline. Try to choose the horizontal centerline position.
3. When install the ultrasonic flow meter, need to input these parameters: pipe material,pipe wall thickness and pipe diameter. Fulid type, whether it contains impurities,bubbles, and whether the tube is full.

Transducers installation

1. V-method Installation
V-method installation is the most widely used mode for daily measurement with pipe inner diameters ranging from DN15mm ~ DN200mm. It is also called reflective mode or method.

2. Z-method Installation
Z-method is commonly used when the pipe diameter is above DN300mm.