Coating technology: Determination of coating reflectivity

Key tips: 1 Coating reflectivity detection equipment: Coating reflectance tester 2、 Working principle of coating reflectance tester The instrument consists of a host, a standard board (one black and one black), a charger, etc This machine adopts the principle of 0 ° irradiation and diffuse reflection reception When the reflected light of the sample acts on the surface of the photocell, an electric signal is generated and input to the DC amplifier for amplification and reading display 3、 Main technical parameters 1 Measurement range 0-100 Two Shenyang steel structure fireproof coating construction expert punde Building Fire Engineering Co., Ltd Recommended introduction: since its establishment, Shenyang punde Construction Fire Engineering Co., Ltd has cultivated a group of professional construction teams with excellent equipment, rich experience and serious responsibility with advanced and scientific management methods and strict engineering quality assurance and after-sales service system It has undertaken a number of fire system installation projects, which has been praised by customers Every idea and special requirement of you will be fully considered by us and fully realized in the construction technology, which will become the cornerstone of our successful long-term development We are looking forward to your invitation, to provide you with quality services and high-quality technical support! All construction coatings have passed ISO9001 Coating home news: 1 Coating reflectance detection equipment: coating reflectance tester 2 Working principle of coating reflectance tester this instrument is composed of mainframe, standard board (one black and one black), charger, etc This machine adopts the principle of 0 ° irradiation and diffuse reflection reception When the reflected light of the sample acts on the surface of the photocell, an electric signal is generated and input to the DC amplifier for amplification and reading display 3、 Main technical parameters 1, measurement range 0-1002, repetition accuracy ≤ 0.33, indication error ± 1.04, ambient temperature 5 ° C ~ 40 ° C, relative humidity < 85% 5, input power dc9 ∨, working voltage DC7.2V 4、 Test steps: 1 Press the power switch and warm up for 2 minutes At this time, it is better to place the probe on the black standard plate 2 Zero calibration: place the main unit on the black standard board and adjust the zero calibration knob on the main unit Since the machine has no negative sign display, the following operations shall be carried out during the zero adjustment: if the rotation is clockwise, then the displayed value will change from small to large, then the rotation direction will be immediately reversed to counter clockwise rotation, and the machine will be displayed as 00.0 by slowly rotating The allowed change value is: 00.1 3 Calibration standard value: put the host computer on the white standard board, adjust the calibration knob of the host computer, so that the value displayed by the host computer is consistent with the calibration value of the white standard board It is allowed to adjust ± 0.1 repeatedly (zero calibration and calibration) 4 Measure RB value: move the host to the black working ceramic plate with the sample, and the value displayed on the display is RB value 5 Measure RW value: move the host to the white working ceramic plate with the sample, and the value displayed on the display is RW value 6 Calculate the ratio of contrast ratio (coverage ratio) = Rb / RW × 100% paint home is focused on coatings, diatom mud, paint coating, coating process, news information and coating of fireproof coating, diatom mud, paint coating, coating process, decoration knowledge and decoration effect map of fireproof coating,