Title: Testing instrumet for vortex street flow meter
Application Number: 92109993 Application Date: 1992.10.27
Publication Number: 1086312 Publication Date: 1994.05.04
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01F25/00
Applicant(s) Name: Yu Kuantao Address: 110101
Inventor(s) Name:
Attorney & Agent: ZHANG RUN
Abstract:
     The invention is an eddy flowmeter tester. A waveform testing system consists of an attenuator, an amplifier, a trigger oscillation amplifier, a high pressure generator, a waveform display and a waveform testing input terminal. The attenuator is connected to the input terminal, the amplifier and the functional combiner. The amplifier is jointed with the trigger oscillation amplifier and the waveform display which is connected to a high pressure generator. A function waveform generator is connected to the functional combiner and the function waveform signal output terminal respectively. A frequency counter is connected to the functional combiner and digital code displaay, and the adjustable voltage-stabilized supply to D.C. supply output terminal. With overall technical properties, the tester can meet the needs for testing and maintenance of the eddy flowmeter and can be developed into universal multifunctional testers.
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