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2013年2月18日星期一

Go watch precision test

The watches go detection accuracy. shamballa watch main function is the measurement and indicate the time, are high-tech the highly precision timing tools. However, indicators of performance check, detected only qualified to achieve the quality requirements, to the factory listed. Watches the quality requirements and the test method due to the different types of timepiece have different. Usually functional testing, performance testing, environmental testing, travel time, etc., delay time test.
However, we need to watch is the accuracy in the a precision test this module needs a lot of aspects of the test, such as the placement of temperature, geography, pressure, voltage, and winding torque change will have some impact on the accuracy of the watch . Room temperature, ceramic watches are generally dial facing up and 6:00 upward vertical position of the instantaneous difference is generally measured using calibration instrument, real walking day difference is first tested watches with standard clock ratio of received instructions difference, 24 hours after the match to get an indication of the difference, the difference of the two indicates poor Walking Day is the real difference. Usually in the long-term operation of the ceramic watch the stability of precision of the drawn casio watches prices, measured under the same conditions timing ceramic watch instantaneous difference and real go bad day to day variation and drift values ​​derived based on these data. Timepiece running for some time at 8 ° C, 23 ° C and 38 ℃ respectively, were tested instantaneous difference when the temperature or real Walking Day difference, the temperature coefficient is calculated based on these data, the error of the temperature error and the secondary temperature. Ceramic Watch table to run a certain time at a pressure of 670mbar and 1013mbar, respectively test the instantaneous difference in the time of the pneumatic or solid Walking Day differential pressure coefficient and the pressure error is calculated based on these data. The changes in the power supply voltage for the quartz clock is more important, and were measured when the supply voltage is 10% higher than the nominal value, and 10% lower when the instantaneous difference or real Walking Day differential, whereby the voltage coefficient is calculated and the voltage error. Were measured Clockwork tighten and relax to watch as the degree instantaneous difference or real go day difference has gone a certain period of time (for example, 24 hours), pursuant to calculate the winding torque error. Swing the mainspring torque down will lead to decline in wheel swing swing change will lead to the pace of change in the travel time, when ceramic watches table when error, so this winding torque error is also called when error.

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