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SZM-2, 3 magnetoelectric tachometer, made up of speed sensor and indicator, long distance for measuring engine speed (transmission line sensors and indicators are not directional, the maximum length of 50M), can be used to measure various types of vehicles, ships, printing, textile, building machinery, and the speed of various types of power equipment. The instruments need to be equipped with SZMB-7 or SZMB-8 type two kinds of sensors. A sensor can simultaneously drive the first two or three tables for two or three speed instructions.

Conditions of Use: tachometer ambient temperature -10 ~ 60 ℃, relative humidity ≤ 85%.

Basic error: tachometer 20 ± 2 ℃ in the case, the basic error of measurement of the upper limit of ± 1.5%.

Humidity: 10 ℃ when the temperature of each change, the indications of additional error of not more than the absolute value of the basic error limit.