Product Details

handheld ultrasonic flow meter

Place of Origin Shaanxi, China
Brand Name Qinwei
Model Number HL-LWS

Product Features

Specifications

1.3AAA Ni-H Battery Powered
2.RS232 Output
3.portable/handheld
4.no invasive.no intrusive.no blockage.no moving part

Handheld ultrasonic flow meter utilizes low-voltage, multi-pulse time difference principle, the use of high-precision and ultra-stable double-balanced differential signal transmitter, differential receiver digital detection technique to measure the downstream and upstream directions sonic transit time flow rate calculated according to the time difference . With good stability, zero drift, high accuracy, wide turndown ratio and strong anti-jamming features.
When the ultrasonic beam propagation in the liquid, the liquid flow will produce small changes in the propagation time, the propagation time is proportional to the fluid flow rate variation, zero flow, the two acoustic sensors required for transmitting and receiving exactly the same time (the only actual measured zero flow technology); medium flow, countercurrent flow of the acoustic transmission time is greater than the direction of acoustic transmission time

 

Item

           Specification  of  handheld ultrasonic flowmeter

Linearity

0.5%

Accuracy

±1%  first to meet the accuracy in domestic

Repeatability

0.2%

Response Time

0-999 seconds, user-configurable

Velocity

0.01±32m/s

Pipe Size

20mm-6000mm

Applicable to  

Applicable for steel, stainless steel, cast steel, PVC, FRP and other uniform dense quality pipe

Liquid types

water, sea water, sewage, alcohol, various oils such as uniform, single, stable liquid

Output Signal

OCT output of positive and negative, the net cumulative pulse signal and frequency signal (1-9999Hz optional)

Data Interface

RS232 interface is used for plastic net testing or export the record data. 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.

Security

Setup values Modification Lockout. Access code needs unlocking

Display

4 lines English characters on-screen display instantaneous flow, velocity,, cumulative flow, signal status working hours and so on .

Straight pipe length

Upstream≥10D,Downstream≥5D, Length from pump exit≥30D

Transducers

Model M1 for standard, other 3 models for optional

Transducer Cord Length

Standard 2x10 meters, optional 2x 500 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

Housing Material

ABS

Size

Small size 220×92×32mm

Weight

Light weight 538g with batteries

 

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