Title: Rod drop time measuring instrument
Application Number: 200310104884 Application Date: 2003.10.22
Publication Number: 1610010 Publication Date: 2005.04.27
Approval Pub. Date: 2006.05.31 Granted Pub. Date: 2006.05.31
International Classifi-cation: G21C7/00,G21C7/08,G04F10/00
Applicant(s) Name: Bohai Shipping Heavy Industry Co., Ltd. Address: 125004
Inventor(s) Name: Xia Yuting, Wei Futong
Attorney & Agent: liu zhongda
Abstract:
     The rod drop time measuring instrument includes casing and measuring circuit, which includes analog signal processing circuit comprising photocoupler, operation amplifier, etc.; timing control circuit comprising NANDs, etc.; counting display circuit comprising ICs and digitrons; self-test circuit comprising ICs, transistors, relays, etc.; and low voltage power source comprising transformer, diodes and voltage regulating IC. The present invention has convenient use, time measuring precision within 0.02 sec, display precision up to 10 ms and measurement range of 1-9.99 sec.
Time: 7
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