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Specification
BatteriesIncluded : 1
BatteriesRequired : 1
BatteryInstallationDeviceType : not_installed
Brand : Graigar
BulletPoint1 : It consists of Light Source, Optical System, Detection System, Data Process and Display System. The whiteness Calculation Formula of the instrument is blue light whiteness R457.
BulletPoint2 : Use of high quality imported components, good reliability.
BulletPoint3 : The optical path design is reasonable, simple. Adopt filter system with correction, the whiteness can be reflected quantitatively.
BulletPoint4 : No preheating after starting, measurements can be taken after simple calibration, easy to operate.
BulletPoint5 : Able to memory 254 groups of measurement data.
BulletPoint6 : Safety packaging
ContainsBatteryOrCell : battery
ExternallyAssignedProductIdentifier1 : 0707457584274
ExternallyAssignedProductIdentifier2 : 707457584274
FinishType : Finish
IncludedComponents : No
ItemName : WM-206 Whiteness Meter White-Ness Value Tester Range 0%-120% Whiteness Tester
ItemPackageDimensions_Height : 7 centimeters
ItemPackageDimensions_Length : 23 centimeters
ItemPackageDimensions_Width : 11 centimeters
ItemPackageQuantity : 1
ItemTypeKeyword : multi-testers
Manufacturer : Graigar
Material : Plastic
MeasurementAccuracy : \
ModelName : EZ4
ModelNumber : WM-206
NumberOfItems : 1
NumberOfLithiumIonCells : 1
PartNumber : WM-206
PowerSourceType : Battery Powered
ProductDescription :

Principle

The light source of the instrument is long-life LED with 457nm, conforming to the light source requirement in the JJG 512-2002 National Metrological Whiteness Meter Verification Regulation.  The measurement of the instrument adopts the principle of photoelectric effect. The diffuse reflectance Radiant Brightness Energy Value of the sample surface is receive by the optical cell. Then, the value is amplified by high-precision auto zeroing operation amplifier, inputted to the calibration circuit for energy calibration. Then, the whiteness value of the sample is directly shown on the digital display.

Specifications

Range:0%~120%

Resolution:0.1%

Illumination Condition:45°/0°

Illuminant:LED 457nm

Whiteness Formula:Blue Light Whiteness WB=R457

Measuring Aperture:18mmx11 mm Rectangle

Zero Drift:<<0.1%

Stability of Display:<<0.5%

Repeatability of Measurement:<<0.1%

Operating Gondition

Temperature:0ºC~40ºC

Humidity:<85%RH

Power Supply:Lithium Battery

Main Unit Size:140mmx45mmx75 mm

Weight:305g(Including Batteries)

Standard Accessories:

Main Unit

Standard White Board

Optical Cleaning Cotton Cloth

Carrying Case

Operation Manual

ProductSiteLaunchDate : 2018-03-23T07:00:00.000Z
SupplierDeclaredDgHzRegulation : not_applicable
SupplierDeclaredHasProductIdentifierExemption : 1
UnitCount : 16
UnspscCode : 41113600