Product Description
The whiteness meter is mainly used to directly measure the whiteness value of objects or powders with flat surfaces. Can be widely used in textile printing and dyeing, paint, chemical building materials, paper and cardboard, plastic products, white
cement, ceramics, enamel, talc, starch, flour, salt, detergent, cosmetics and other substances whiteness measurement.
Product Features
* It is composed of light source, optical system, detection system, data processing and display system. The whiteness
calculation formula of this instrument is blue light whiteness R457.
* Define the whiteness value of an ideal surface with a diffuse reflectance ratio of 1 across the visible spectral range as 100, and the whiteness of a black surface with a spectral reflectance factor of 0 as 0.
*Diffuse reflection is the reflection of light projected on a rough surface in
all directions. When a beam of parallel incident light is emitted to the rough surface, the surface will reflect the
light in all directions, so although the incoming rays are parallel to each other, because the normal direction of
each point is inconsistent, causing the reflected light to reflect irregularly in different directions, this reflection
is called "diffuse reflection" or "diffuse.Shoot ".
* USB, RS-232C data line output and PC connection, data collection.
* There is also a Bluetooth Bluetooth data output option.
Operational Principle
The Illuminant 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.
Product Parameters
| Measuring Range | Whiteness: 0~100 Reflectance: 0~100 |
| Resolution | 0.1 |
| Illumination Condition | 45/0 |
| Illuminant | LED 457 nm |
| Whiteness Formula | Blue Light Whiteness WB=R457 |
Measuring Aperture | 11x18 mm Rectangle |
| Zero Drift | ≤0.1 |
| Stability of Display | ≤0.5 |
| Repeatability | ≤0.1 |
| Operating Condition | Temperature: 0~40 ℃ Humidity: <85 %RH |
| Power Supply | Lithium Battery |
| Size | 140x44x75 mm |
| Weight | 305 g (Not including batteries) |
Product Accessories
Standard Accessories | Main Unit |
Standard Board |
| Optical Cleaning Cotton Cloth |
AC Adaptor |
Optional Accessories | Constant Pressure Powder Forming Apparatus |
| USB/RS-232 data output |
Bluetooth data output |
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MANUAL
Buying Guide
When you choose the model number of Amittari instrument, the default is standard delivery. If you need other optional accessories, please tell our customer -service worker.
The following three items are basic optional accessories choices
Standard Accessories+USB data output
Standard Accessories+Bluetooth data output
Bluetooth Accessories
Amittari instruments generally can be supplied with Bluetooth™ data output function ( except few instruments ) . As Bluetooth™ data output is included in optional accessories, not standard delivery,it needs to be indicated when choose.10 meters to 100 meters distance can be chosen.Please kindly contact with the customer-service worker if you need Bluetooth™ data output.
