Цитата:
Сообщение от магурo
......Для ВФА ещё меньше ( меньше 6 сек наверно ) - нигде оффициальную цифру не встречал.....
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Seiko Watch Corporation ответили на мой запрос по допускам для ВФА. Такие цифры:
1) mean daily rate in 6 positions (sec/day) = -1.0~+3.0
2) mean variation of daily rate (sec/day) = 1.6 or less
3) Maximum daily rate between two consecutive daily rates in the same position (sec/day) = 3.0 or less
4) Variation of rate between positions, horizontal and vertical (sec/day) = -5.0~+7.0
5) Maximum daily rate between mean daily rate and any individual rate (sec/day) = 7.0 or less
6) variation of daily rate per 1C between 8C and 38C (sec/day) = -0.3~+0.3
7) variation of daily rate per 1C between 23C and 38C (sec/day) = -0.3~+0.3
8) rate-resumption (sec/day) = -4.0~+4.0
Hi-Beat 36000 V.F.A (SBGH265)
Product to be inspected: Watch movement before casing
Positions: 6 positions (Dial up, Dial Down, 12 o'clock up, 3 o'clock up, 6 o'clock up, 9 o'clock up)
Temperatures: 3 conditions (8℃、23℃、38℃)
Days of inspection: 34 days in total