The following points should be grasped when testing the shaft power with the steel string torque meter.
(1). To select a section of 200mm above the axis of the length of the shaft, the surface wipe clean, in order to install the sleeve, the precise determination of the diameter of the shaft, according to the measured diameter of the selected sleeve specifications, and manufacturing card ring.
(2). According to the measured axis of power, speed or torque, the choice of the corresponding coefficient of the sensor.
(3). According to the specific situation of the test site, with reference to the application of the test equipment specification, the correct installation of the brush holder and the sleeve.
(4). The zero point of the sensor should be adjusted before being measured ". In order to ensure the accuracy of measurement, in the formal test should be carried out before turning.
(5). Test should be carried out under the condition of stable condition, every point must be measured 3~5 times, take the average value as the measured value of the working condition.
(6) the coefficient of the sensor should be periodically re measured.
Method for measuring rotation speed handheld digital tachometer tachometer, etc.. Hand-held tachometer has two kinds of centrifugal and digital, the former is in power machine or multistage centrifugal pump shaft end of the direct measurement of the speed and the accuracy of the low, which in turn can be divided into two types: contact and non-contact. Non contact tachometer is reflective markers detection speed, the instrument is not in contact with the rotating parts, but need to put a reflective markers on the rotating body. High precision digital tachometer, meter error is only lr/min.
