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我们对多只ZBD白度计检定后发现,它的零点漂移、示值漂移和测量重复性均可满足规程的要求,但示值误差较大,有时会超出规程规定的范围,对此情况,可采用两种办法进行调整。 1.进行2、3次零点和示值校正。在检定中经常发现,若已调好零点后旋动示值校正旋钮,零点位置会发生偏离。同样在示值校正好后,旋动零点校正旋钮,其示值也会发生偏离。从而,当校正一遍后再检查零点,零点已发生偏离,这将增大示值误差。解决办法是依次重复进行二、三遍零点校正和示值校正。用此法一般可使示值误差减少1～2个白度值。 2.调整硒光电池。若按上述方法校正后
We have found that more than one ZBD whiteness meter, its zero drift, drift and measurement repeatability can meet the requirements of the rules, but the indication error is larger, and sometimes beyond the scope of the rules and regulations, in this case, There are two ways to adjust. 1. Perform 2,3 times zero and indication correction. Often found in the test, if you have adjusted the zero point after turning the indication correction knob, zero position deviation occurs. Also after the indication is calibrated, turn the zero calibration knob, the indication will deviate. Therefore, when the zero is checked again after the correction, the zero has deviated, which will increase the indication error. The solution is to repeat two or three times zero point correction and indication correction. This method can generally reduce the indication error by 1 to 2 whiteness values. 2. Adjust selenium battery. If the above method after correction