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Surface roughness measuring instrument in use matters needing attention.
Jan 08, 2018

Surface roughness measuring instrument is a precision non-destructive testing equipment, need someone to be careful to use the operating procedures.


(1) Strictly avoid collision, violent vibration, heavy dust, damp, oil, strong magnetism and so on.

(2) After the sensor, please put it in the box and keep it in time.

(3) When the battery voltage is insufficient, it should be charged in time. Work while allowing the power adapter, but if you test the sample value of the lower Ra will affect the test accuracy. If a few hours after charging, the voltage is still insufficient or filled with a very short period of time and then find the voltage shortage, you need to replace the battery.

a. Remove the two screws on the battery compartment cover and remove the battery compartment cover.

b. Remove the battery pack, unplug the connector and quickly replace the spare battery pack (option).

c. Put the battery pack back into the battery compartment, cover the battery compartment cover and screw it in.

※ Note: When replacing the battery, it will cause the loss of data stored in the machine, so important measurement data should be printed or recorded.

(4) due to the sensor is a very sophisticated components, disassembly accidentally damaged, it is recommended to focus on the use of measurement, to minimize the disassembly times.

(5) When the measurement error is within ± 10% of the range, and the user confirms that the cause of the error is not due to human factors.

(Such as improper operation or measurement error), you can use the machine's special software calibration function. The calibration value is a percentage, which represents the phase of the measurement after calibration, as a percentage of the increase (or decrease) when not calibrated.


1, we must first pay attention to the selection of roughness instrument, previously encountered some customers because the wrong type of model can not be used, then how can we avoid this situation? To make clear their actual measurement needs, such as the workpiece you want to measure Shape, size, shot blasting or precision machined parts, with or without holes and trench measurement requirements; whether to print the measurement

As a result, whether to take the computer, but also figure out whether to roughness or roughness profiler. And then communicate with the relevant sales staff to determine the required surface roughness of the instrument model and specific configuration.

2, the choice of measurement conditions: General roughness instrument has a sample length, length and range of evaluation options, which should be based on the size of the workpiece and surface finish selection, we can think. The length of the assessment generally based on the size of the workpiece to choose from, if the workpiece is particularly small that the best choice for the length of the smallest selection is 1L, so mainly to prevent the sensor in the measurement project ran outside the measured part of the workpiece, The result is not the true value of the workpiece surface roughness, but also to prevent the sensor ran unexpected parts of the workpiece can not be reset due to damage to the sensor. The range should generally increase with the increase of sampling length.

3, the choice and application of sensors: In addition to standard sensors other optional sensors such as surface sensors, pinhole sensors, deep groove sensor, right angle measuring mechanism generally require the configuration of the measurement platform to do a fixed, use the surface of the sensor when the outer surface Be sure to make sure that the sensor moves from the high point to the low point of the workpiece. The hole sensor is mainly used when the diameter of the hole in the workpiece is less than 2mm and less than 5mm, and the inner hole of 5mm or more can be measured with a standard sensor. 10mm; rectangular measuring mechanism is mainly used in the measurement of crankshaft.

4, the sensor can be added to measure the protective sleeve to try to add, you can protect the sensor over-voltage.

5, the surface before the measurement should be wiped clean to avoid oil, water, dust, etc., to avoid rust sensor to extend the life of the sensor, while the measurement results are more accurate.

6, long-term need to be sure to promptly charge, to avoid battery depletion and affect the battery life.


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