Factory supply reflectance measuring instrument, technical parameters: 1. Measuring range :0-100: 2. Repeatability: 0.3%: 3 data reflected light intensity is proportional to: the spectral sensitivity of the instrument is approximately equal to Sc (λ took the opportunity) and y (λ): 5. ambient temperature: 23 ° C + / -5 ° C, relative humidity <85%: 6 Input power: 220V + / -10% 50Hz: Details: C84-II type reflection rate instrument special instruments developed for the implementation of international standards, national standards for coatings, paints, inks and other chemical industry. It can be used for the film hiding power measurement and the reflectance measurement. The instrument is fully compliant with international standards ISO3906-1980 (E), the international standards GB/T13452.3-92, GB9270-88, GB5211.17-88 in the instrument requirements. The instrument consists of a probe, the host, the standard board (black and white each one), the work of ceramic plates (black and white two). The probe uses 0 degrees irradiated principle of diffuse reflectance received. When the sample reflected light acting on the selenium cell surface to produce an electrical signal input to the DC amplifier amplifies, and display readings. While supplies concrete cement equipment, highway engineering equipment, bitumen instruments, chemical analysis equipment, testing machines, scales, test mode, a screen; for highways, railways, bridges, mixing station, municipal, universities, engineering quality The testing center provides a full set of test equipment and test equipment for the laboratory.