How to choose a gloss meter gloss meter for measuring the gloss of various materials, such as automotive paint, stone, plastic, paper and other products, is used in many industries. In China, there are many manufacturers of gloss meters. Various brands and various models are known as national first-class precision. In the process of purchasing, it is easy to suffer from the selection syndrome. The choice of gloss instruments, need to refer to the considerations of those aspects, the author according to their own experience is listed as follows:
1) The standard board of the gloss meter must be well protected
For the measurement of the gloss meter, the data of the gloss standard board must be used as the reference standard. If the standard board is not accurate, the instrument must be inaccurate. Moreover, the gloss of the standard board is extremely susceptible to fouling, so the standard board of the instrument must be well protected, generally
A special base will be used, and the standard board is embedded in the base to avoid external pollution and scratches.
2) Gloss meter must have standard plate fouling self-diagnosis function
That is, if the standard board is dirty, the instrument can recognize and prompt the user to clean the standard board. Otherwise the calibration error will be inaccurate.
3) Gloss instrument requires temperature compensation
The principle of the gloss instrument is to measure the amount of reflected light flux on the surface of the material using a light source and a receiver. If the ambient temperature changes after the instrument is calibrated, resulting in a change in the luminous efficiency of the light source, the error in the change in the luminous efficiency of the light source is directly reflected in the measured data. If there is a temperature compensation function, the change in luminous efficiency caused by the temperature change can be compensated to ensure that the luminous efficiency of the light source does not change.
4) Stability, consistency and accuracy of the gloss instrument
These indicators are the core technology of an instrument. The national first-class measurement accuracy, some manufacturers only achieve propaganda or prototype can achieve, in mass production, can achieve a level of accuracy, a little difficult. At the time of purchase, the seller is required to promise and can, and send it to the metrology institute for confirmation.
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Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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