HNVF-1000H Handheld Ultrasonic Flowmeter
1.1 Introduction
Welcome you choose to use superior performance, more features, uses a patented technology to produce HNVF-1000 series ultrasonic flowmeter.
Eighth Edition English display HNVF-1000H handheld ultrasonic flowmeter in the same series, is still the basis for the company's main line of products on the seventh edition of the ultrasonic flowmeter developed. The new version of the meter to maintain excellent performance and features of the previous version, improved transmission circuit using a battery-powered. Then we will develop more advanced and more reliable new generation of ultrasonic flowmeter, subsequent versions of the meter will also use these advanced circuits.
HNVF-1000 series ultrasonic flowmeter selection of a large number of the world's leading semiconductor manufacturers such as:. Philips, Maxim, Ti, Winbond, and Xilinx hardware design is simple, powerful and user-friendly software. It uses low-voltage multi-pulse emission balance acceptable patented technology, can adapt to harsh industrial environment applications, stable work correctly near the inverter.
Optimized intelligent adaptive signal processing, users do not need any circuit adjustments.
Also its remarkable feature is a built-in rechargeable Ni-H battery, fully charged can work continuously for 12 hours.
Use of advanced circuit design, the latest devices, outstanding Chinese hardware design with user-friendly software designed to make the new version of HNVF-1000 Series Ultrasonic Flowmeter become the most advanced and largest sales of the first brand-name products, and soon We will enter the international market to win more and more recognition.
§1.2 works
HNVF-1000H handheld ultrasonic flowmeter is used to measure the flow rate of liquid closed conduit, it is a non-contact sensor, attached type, thus making installation simple and easy to operate.
Two sensors HNVF-1000H handheld ultrasonic flowmeter having the sending and receiving of dual-use features. User in accordance with a certain distance of the two sensors attached to the outside of the pipe, can be used twice a V sound path method, four acoustic range of W method, or the use of sound waves directly through the pipe measured relative to the mounting method of Z . Users can be measured based on the characteristics of the fluid conduit and to choose what method. Flowmeter sensors in turn controls two receiving and transmitting ultrasonic wave propagation time measuring device therebetween and to calculate the time difference, the time difference and the flow rate of the fluid is obtained by a direct relationship, stated as follows:
[Formula] V = MD / sin2θ × ΔT / Tup · Tdown
among them:
θ is the beam angle between the flow direction of the beam M of the liquid in the number of straight line
D is the diameter of the pipe
Tup acoustic beam propagation time in a positive direction
Tdown acoustic beam propagation time in the reverse direction
ΔT = Tup -Tdown
§1.3 Features
* 0.5% Linearity
* Repeatability 0.2%
* Bilingual windowing operation
* 4-way flow totalizer
* Low-voltage multi-pulse ultrasonic wave transmitting and receiving patent balance
* Built-in data accumulator
* Built-in data logger
* Cumulative period of 0.5 seconds
* Good resistance
* 100 picoseconds time difference measurement resolution
§1.4 Typical uses
HNVF-1000 ultrasonic flowmeter has been successfully applied to the measurement of the work of the industry. Measurement range 20-6000mm (0.5-20 inches), the various fluids: water, water, sewage
Water, chemical fluids, water, fuel and so on. The reason is that the instrument uses a non-contact measurement with no moving mechanical parts, independent of system pressure and harsh environments. Maximum temperature of standard sensors is 110oC, over this temperature please contact the manufacturer or supplier.
1.5 parameter specifications
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