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Цифровой лазерный тахометр HS2234 2.5-99999 об/мин ЖК-дисплей Тестер скорости вращения мотора малого двигателя Безконтактный
US$16.99 US$20.99

Q: hi, I want to buy a digital tachometer, but I wonder if the reflectors, will be included? if not, where I will get. thanks

Задавает BG101164034 на 2021-04-23 03:37:09

TooMeg Just put a blob of high-contrast paint on the thing you want to read from. For example; if the motor spindle is black then paint a small section white and point the tachometer at that point. The difference in light being reflected back should be sufficient for the sensor to detect and count it.

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