Overview: Xy210a digital black and white density meter is the latest development of a high-precision instruments.With functions of small size , light weight , portable, high accuracy, good stability, etc.Xy210a is a high quality product with scm. Compared with previous analog circuit testing method, the instrument can read the density value more accurately, and more simple calibration. Xy210a digital black and white densitometer adopts stable light source, and high-precision electric transducer. With Technical parameters: Density range : d = 0.00-5.00 (xy210: d = 0.00-4.50) Sampling time : 0.8 seconds Light hole size : 2mm in diameter Reading stability : ¡à 0.02 Uncertainty : 0.00 ~ 3.00 ¡ü 0.02d 3.00 ~ 5.00 ¡ü 0.04d (xy210a: 3.00 ~ 4.50 ¡ü 0.04d) Carton/wooden case