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Separate Type WM-106 Integrated WM-206 Whiteness Meter Detector Blue Light Measurement
Applications
The Whiteness Meter is designed for direct measurement of whiteness values on flat surfaces of objects or powders. It is widely used across multiple industries including textile printing and dyeing, paints, chemical building materials, paper board, plastic products, white cement, ceramics, enamel, talc powder, starch, flour, salt, detergents, cosmetics, and other materials.
Measurement Principle
This instrument consists of four main systems: Light Source, Optical System, Detection System, and Data Processing & Display System. It utilizes the blue light whiteness R457 calculation formula with a long-life LED light source at 457nm, compliant with JJG 512-2002 National Metrological Whiteness Meter Verification Regulation. The measurement operates on the photoelectric effect principle, where diffuse reflectance radiant brightness energy from the sample surface is received by the optical cell, amplified through high-precision auto-zeroing operational amplifiers, calibrated through energy calibration circuits, and displayed as direct whiteness values.
Key Features
Optimized optical path design with correction filter system for quantitative whiteness reflection
High-quality imported components for reliable performance
No preheating required - ready for measurement after simple calibration
Memory capacity for 254 measurement data groups
Compliant with JJG 512-2002 and multiple international standards including GB3978, GB3979, GB7973, GB7974, ISO2470, and others
RS-232 data output for PC connectivity
Optional Bluetooth data output available
Technical Specifications
Parameter
WM-106
WM-206
Measurement Range
0~120
Resolution
0.1
Illumination Condition
45/0
Illuminant
LED 457nm
Whiteness Formula
Blue Light Whiteness WB=R457
Measuring Aperture
≤15mm
18x11 mm Rectangle
Zero Drift
≤0.1
Display Stability
≤0.5
Measurement Repeatability
≤1
Operating Conditions
0~40°C, <85%RH
Power Supply
4x1.5V AAA (UM-4) Battery
Lithium Battery
Dimensions
Main Unit: 156x67x28 mm
Probe: Ф44x55 mm
Main Unit: 140x45x75 mm
Probe: NO
Weight
200 g (Not Including Batteries)
305 g (Including Batteries)
Standard Accessories
Main Unit (1pc), External Probe (1pc - for WM-106), Standard White Board (1pc), Optical Cleaning Cotton Cloth (1pc), Carrying Case (1pc), Operation Manual (1pc)
Optional Accessories
Constant Pressure Powder Forming Apparatus, RS-232C Data Cable with Software, Bluetooth Data Adapter with Software