Marine magnetic tachometer ZJ-3

Marine magnetic tachometer Model: ZJ-3 instrument Information: ZJ-3 marine magnetic tachometer The instrument for measuring the engine speed, is also applicable to other types of locomotives and measure engine speed. Working conditions: Ambient temperature -40 ~ + 55 ℃, relative humidity ≤85% Basic error: tachometer environment at a temperature of 20 ± 2 ℃, the basic error of ± 1.5% full scale value Temperature effect: When the temperature is When changing 10 ℃, showing the value of the additional error is less than the absolute value of the basic error limit Backlash: tachometer indication backlash does not exceed the basic error of the absolute value of accessories: Each table comes with a flexible shaft, flexible shaft 230mm long points , 275mm, 850mm are three user units Choose one □ Specifications