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Professional manufacturer of intelligent analytical instruments

Laser Particle Size Analyzer Related

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SOP-Editable Fully Automated Testing Technology

SOP-Editable Fully Automated Testing Technology

The three-lens optical system consists of an imported high-power fiber-optic output laser, a patented Fourier lens, a filtering lens, a standard Fourier transform lens, a forward detector, and a lateral detector. The fiber optic interface connects to a high-power fiber laser; the Fourier lens transforms the diverging laser beam into a converging one. The filtering lens primarily eliminates scattered stray light, ensuring that the focused light on the optical path is purer, thereby reducing background noise and enhancing the instrument's accuracy and sensitivity. When the sample under test is illuminated by the laser beam, it generates a scattered light signal. The standard Fourier-transform coated lens then focuses this scattered signal onto the detector, resulting in a stronger and more sensitive detection signal.

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96-channel simultaneous acquisition technology

96-channel simultaneous acquisition technology

Each particle size analyzer is equipped with a detector that has multiple independent channels to detect the scattered light from the sample. The scattered light signals are converted into electrical signals by the detectors and then analyzed by software to generate a particle size distribution spectrum. With advances in technology, in recent years, particle size analyzers have increasingly more optical channels—many models now feature as many as over a hundred channels. As for other brands' claims about the motherboard's sampling rate being so many times per second, each channel is sampled sequentially: only after the first channel has been fully sampled does the instrument move on to the second channel. Although it takes only a short time to complete the sampling of all over a hundred channels, the total sampling time remains quite long when compared to the constantly changing nature of the sample itself. As a result, the signals collected in this manner do not represent an instantaneous spectrum across all channels, and the resulting particle size distribution is therefore not highly accurate. NKT’s 96-channel simultaneous acquisition motherboard breaks through the limitation of sequential sampling. After the software issues the sampling command, all channels instantly freeze and collect data simultaneously—just like taking a photograph—to ensure temporal consistency of the spectra across all channels, thus delivering more accurate data.

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One-click automatic system switching

One-click automatic system switching

The NKT wet-and-dry dual-use instrument is fully equipped with a one-button, fully automatic switching function between dry and wet methods. After issuing the command, the instrument completes the switch between dry and wet modes within 3 seconds and enters its optimal working state—unlike other brands of wet-and-dry dual-use products that require manual switching, which not only increases the workload but also compromises the instrument's stability. Moreover, improperly stored or handled dry-mode dispersion systems or wet-mode dispersion systems after replacement may even risk damage. The instrument’s integrated wet-and-dry dispersion and sample-loading system has been ingeniously designed: whether operating in wet or dry mode, each system works fully automatically and independently. Both systems have been tested for zero-sample residue, and alternating between coarse and fine samples does not affect their performance.

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Automatic Centering System (Patented Technology)

Automatic Centering System (Patented Technology)

The fully automatic alignment system independently developed by NKT comprises a stepper motor, three precision lead screws, precision guide rails, a differential controller, and a control system. Its minimum step resolution is below 0.5 micrometers, ensuring that the laser beam, after being focused, completely passes through the 0.18-millimeter central aperture of the detector. This effectively reduces the impact of off-axis light from the laser beam on the detector’s background signal, thereby enhancing the accuracy of test results. Since its establishment, NKT has been the first to equip all its instruments with an automatic alignment system. The automatic alignment system has consistently been a standard feature in all NKT models of laser particle size analyzers. Automatic adjustment ensures that the instrument’s optical system remains in perfect condition, guaranteeing both the accuracy and repeatability of tests. Moreover, the optical system quickly returns to its original position after the instrument experiences vibration, simplifying operator procedures and facilitating maintenance.

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Dual-lens optical system (patented technology)

Dual-lens optical system (patented technology)

The dual-lens optical system consists of an imported high-power fiber-optic output laser, a patented Fourier lens, a filtering lens, a forward detector, and a lateral detector. The fiber-optic interface connects to a high-power fiber laser; the Fourier lens transforms the diverging laser beam into a converging one. The filtering lens primarily eliminates stray light caused by off-axis dispersion, ensuring that the focused light on the optical path is purer, thereby reducing background noise and enhancing the instrument’s accuracy and sensitivity. When the sample under test is illuminated by the laser beam, it generates scattered light signals, making the detection signal stronger and more sensitive. With a purer optical path and lower background noise, measurement accuracy is significantly improved—especially for large particles. The 110mm large-aperture lens broadens the detection angle. Additionally, increasing the number of detectors enhances the resolution.

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Three-lens optical system (patented technology)

Three-lens optical system (patented technology)

The three-lens optical system consists of an imported high-power fiber-optic output laser, a patented Fourier lens, a filtering lens, a standard Fourier transform lens, a forward detector, and a lateral detector. The fiber optic interface connects to a high-power fiber laser; the Fourier lens transforms the diverging laser beam into a converging one. The filtering lens primarily eliminates scattered stray light, ensuring that the focused light on the optical path is purer, thereby reducing background noise and enhancing the instrument's accuracy and sensitivity. When the sample under test is illuminated by the laser beam, it generates a scattered light signal. The standard Fourier-transform coated lens then focuses this scattered signal onto the detector, resulting in a stronger and more sensitive detection signal.

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