The LANDTEK WM-106 is a digital whiteness meter with an external probe that reads blue-light whiteness R457 directly over 0~120 with 0.1 resolution. A 457nm LED in 45/0 geometry needs no warm-up; the meter stores 254 groups of data and outputs to a PC via RS-232.
The LANDTEK WM-106 directly measures the whiteness of objects and powders that have a flat surface, showing the blue-light whiteness value (WB=R457) on its display. It is the model of the WM-106 / WM-206 series that works with an external Φ44x55 mm probe connected to a compact handheld main unit.
Its light source is a long-life 457nm LED that meets the light-source requirement of the JJG 512-2002 national metrological whiteness meter verification regulation. The diffuse reflectance of the sample surface is received by a photocell, amplified by a high-precision auto-zeroing amplifier and passed to the calibration circuit, so the whiteness value of the sample is shown directly.
Typical applications include textile printing and dyeing, paint, chemical building materials, paper board, plastic products, white cement, ceramics, enamel, talc powder, starch, flour, salt, detergent and cosmetics.
| Manufacturer | LANDTEK |
|---|---|
| Model | WM-106 |
| Range | 0~120 (whiteness value) |
| Resolution | 0.1 |
| Illumination Condition | 45/0 |
| Illuminant | LED 457nm |
| Whiteness Formula | Blue Light Whiteness WB=R457 |
| Measuring Aperture | ≤15mm |
| Zero Drift | ≤0.1 |
| Stability of Display | ≤0.5 |
| Repeatability of Measurement | ≤1 |
| Data Memory | 254 groups of measurement data |
| Data Output | RS-232 to PC; Bluetooth output option |
| Standards | JJG 512-2002; GB3978, GB3979, GB7973, GB7974, ISO2470, GB8904.2, QB1840, GB2913, GB13025.2, GB1543, ISO2471, GB10339, GB5950, GB12911 |
| Operating Temperature | 0~40°C |
| Operating Humidity | < 85%RH |
| Power Supply | 4x1.5V AAA (UM-4) Battery (Optional AC Power) |
| Size – Main Unit | 156x67x28 mm |
| Size – Probe | Φ44x55 mm |
| Weight | 200 g (Not Including Batteries) |
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