I. Working Principle and Purposes
The ND-QP980 full-spectrum direct reading spectrometer is composed of four parts: the excitation module, the optical system, the measurement and control system, and the analysis software. When the instrument is working, under the protection of the argon environment, the high-voltage discharge generated by the excitation light source transfers energy to the metal material, changing the metal material from a solid state to a gaseous state. The outer electrons of the atoms in the metal vapor jump from the ground state to the excited state. Atoms in the excited state are unstable. When the outer electrons return from the excited state to the ground state, energy is emitted in the form of light. Different elements emit light of different wavelengths. The full-spectrum curve is collected through the optical path system and the CMOS detector. The spectrum is analyzed by the analysis software. The existence of a certain element is confirmed according to the wavelength of the light, and the content of this element is determined according to the intensity of this wavelength.
The ND-QP980 full-spectrum direct reading spectrometer is mainly used to measure the alloy element composition and impurity element content in metal materials. It is widely used in on-furnace detection, incoming material inspection, quality control, and factory inspection in industries such as metallurgy, casting, and machining.
The measurement accuracy of the ND-QP980 full-spectrum direct reading spectrometer is much higher than the national standard. Since it was launched in the market, it has accumulated rich application experience and has been recognized by many well-known customers.
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Main Technical Parameters
? Optical Structure: The ND-QP980 adopts the Paschen-Runge structure and the Rowland circle device to reduce the influence of stress release caused by the change of the ambient temperature on the instrument and improve the accuracy and stability of the instrument.
? Optical Focal Length: The grating radius is 400mm. The longer focal length provides excellent resolution for the instrument.
? Spectral Line Range: The detectable wavelength range is (165 - 580) nm, and metal and non-metal elements can be analyzed.
? Entrance Slit: The slit width is 12μm. The fine entrance slit effectively filters out unnecessary stray light, avoids the detector receiving light that is too saturated, and reduces the light intensity interference value between elements.
? Detector: The CMOS detector is used. Multiple CMOS are installed and arranged in a dislocation up and down. There is no gap between different wavelengths, making the spectral wavelength a whole and achieving full-spectrum coverage to meet the customer's demand for multi-element testing.
? Concave Grating: 2400gr/mm, the reciprocal of the dispersion rate: 0.47nm/mm (first order). The concave grating can reduce the absorption phenomenon. There is only the light loss of one reflection on the grating surface, and there is no chromatic aberration, improving the vacuum ultraviolet spectrum effect.
? Analysis Time: It varies according to the type of sample. Generally, the analysis time is less than 40 seconds each time. ?
? Excitation Light Source: The digital excitation light source, with various excitation conditions adjustable, meets the analysis requirements of different materials.
? Excitation Electrode: The high-purity tungsten electrode is used. The high-purity tungsten electrode has the advantages of high strength, corrosion resistance, and high temperature oxidation resistance, reducing the influence of instrument parameters on test data during the use of the instrument.
? Argon Module: The argon purity is required to be 99.999%. The argon inlet pressure is 0.5MPa. The argon flow rate is about 3.5L/min for excitation, about 0.4L/min for maintenance, and about 0.1L/min for standby.
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Main Technical Characteristics
? Argon Circulation
? The excellent optical sealing performance can maintain the argon purity for a long time.
? The advanced argon purging optical elements optimize the performance of the UV elements.
? The argon circulation filtration device can eliminate air molecules and improve the reliability of the optical system.
? The stable pressure of the optical device can avoid optical drift and improve the long-term stability of the instrument.
? Low argon consumption and economic efficiency.
? CMOS Full Spectrum Analysis Technology
? Rich spectra, better analysis accuracy.
? The full spectrum distinguishes the background and improves the analysis accuracy.
? Intelligent selection of appropriate sensitive wavelengths. The application of multi-spectral fitting technology has outstanding performance for the general value of the content.
? The application of multi-spectral fitting technology eliminates spectral interference and achieves accurate measurement.
? Original Real-time Intelligent Drift Correction Technology
? Real-time spectral drift correction during analysis, enhancing the stability of the instrument.
? Automatic calibration, more convenient operation. Reducing the standardization frequency.
? The Patent-designed Pneumatic Valve Block
? Integrating multiple solenoid valves and pressure control into one, which not only reduces the volume but also reduces the failure rate.
? The argon filling circulation system in the optical chamber is connected with the excitation table, saving argon consumption.
? Professional and Simplified Operation Software
? Intelligent Program
Intelligently select the matching program to obtain more accurate analysis results.
Enable the quantitative analysis of unknown samples.
? Quality Control
Easily set the upper and lower limits according to the user's quality standards.
Automatically determine whether the sample composition passes.
? Grade Identification
Quickly identify the sample grade and easily classify unknown materials.
? Automatic Diagnosis System
The software interface indicates the real-time instrument operation status.
Warns the instrument maintenance and cleaning time.
? One-key Operation
One-key operation, fast and simple operation, adjusted according to the factory requirements.
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