Spectrometer Unit

Product Specifications

Technical details and manufacturing context for Spectrometer Unit

Definition

A spectrometer unit is the essential optical subsystem within a spectroscopic analyzer responsible for dispersing incoming light into its spectral components. It typically consists of an entrance slit, collimating optics, a diffraction grating or prism for wavelength separation, and focusing optics that direct the spectrum onto a detector array. This unit enables quantitative analysis of material composition by measuring the intensity of light at specific wavelengths. The unit is designed for integration into analytical instruments used in fields such as chemistry, materials science, and environmental monitoring. Its performance is characterized by parameters including wavelength range, spectral resolution, wavelength accuracy, repeatability, stray light, photometric accuracy, scan speed, detector type, signal-to-noise ratio, operating temperature, humidity range, power supply, power consumption, dimensions, and weight. These parameters are provided as reference ranges and must be verified for the specific model and application. The unit is typically constructed with aluminum alloy, optical glass, and mirror coatings. It is intended for use in a controlled laboratory environment, with an operating temperature range of 15–35 °C and non-condensing humidity of 20–80% RH. The power supply is 100–240 V AC, 50/60 Hz, with power consumption up to 100 W. The dimensions are approximately 300×400×200 mm (W×D×H) and weight ranges from 8 to 12 kg depending on detector and accessories. For accurate measurements, calibration with reference lines is required, and photometric accuracy is verified using NIST-traceable standards. The unit is a component, not a complete analyzer, and requires integration with appropriate electronics and software. Always confirm model-specific values and standards with the legal manufacturer or supplier before procurement.

Working Principle

Light enters through an entrance slit and is collimated into a parallel beam. This beam strikes a diffraction grating (or prism) where different wavelengths are diffracted at different angles according to the grating equation. The separated wavelengths are then focused onto a detector (such as a CCD or photodiode array), creating a spectrum that can be analyzed to determine material properties. The detector converts the optical signal into an electrical signal, which is processed to produce a spectrum. The unit's design ensures that the spectral resolution and accuracy meet the specified ranges, but actual performance depends on proper alignment and calibration.

Common Materials

Aluminum alloy, Optical glass, Mirror coatings

Technical Parameters

Parameter	Typical range	Notes & selection driver
Wavelength Range	200–1100 nm	Covers UV-Vis-NIR; extended ranges require specialized detectors.
Spectral Resolution	0.1–2.0 nm	Determines ability to distinguish closely spaced spectral lines.
Wavelength Accuracy	±0.05 nm	Calibration with reference lines required.
Wavelength Repeatability	±0.02 nm	Stability over consecutive scans.
Stray Light	≤0.05 %	At 340 nm with NaNO2 solution.
Photometric Accuracy	±0.005 AU	Using NIST-traceable standards.
Scan Speed	100–1000 nm/min	Faster speeds reduce resolution.
Detector Type	CCD, InGaAs	CCD for UV-Vis, InGaAs for NIR.
Signal-to-Noise Ratio	≥1000:1	At 500 nm, RMS.
Operating Temperature	15–35 °C	Outside range may affect wavelength stability.
Humidity Range	20–80 % RH	Non-condensing.
Power Supply	100–240 V AC	50/60 Hz, auto-switching.
Power Consumption	≤100 W	Typical during operation.
Dimensions (W×D×H)	300×400×200 mm	Bench-top unit.
Weight	8–12 kg	Depends on detector and accessories.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Entrance Slit
Controls the amount of light entering the spectrometer and defines the spectral resolution

Material: Stainless steel
Collimating Mirror
Creates parallel light beams from the slit for uniform grating illumination

Material: Aluminum with reflective coating
Diffraction Grating
Disperses light into its constituent wavelengths through diffraction

Material: Glass with ruled or holographic grating
Focusing Mirror Part
Focuses the dispersed spectrum onto the detector array

Material: Aluminum with reflective coating
Detector Array
Turns the dispersed spectrum into an electrical signal — the output end of the spectrometer.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Spectroscopic Analyzer

View system integration details

Manufacturers of Spectrometer Unit

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Frequently Asked Questions

What is the typical wavelength range of this spectrometer unit?

The wavelength range is specified as 200–1100 nm, covering UV-Vis-NIR. Extended ranges may require specialized detectors. Confirm the exact range for your model with the manufacturer.

How is spectral resolution defined for this unit?

Spectral resolution is the ability to distinguish closely spaced spectral lines, specified as 0.1–2.0 nm. The actual resolution depends on the grating, slit width, and detector. Verify with the manufacturer for your configuration.

What maintenance is required for the spectrometer unit?

Regular calibration with reference lines is required to maintain wavelength accuracy. Keep optics clean and avoid exposing the unit to extreme temperatures or humidity. Follow the manufacturer's maintenance guidelines.

Can this unit be used for quantitative analysis?

Yes, it enables quantitative analysis by measuring light intensity at specific wavelengths. Photometric accuracy is ±0.005 AU using NIST-traceable standards. Ensure proper calibration and sample preparation.

Data Basis

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Preliminary Technical Classification

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pressure:	0.8 to 1.2 atm (operating), 0.5 to 1.5 atm (max)
other spec:	Flow Rate: 0-5 L/min (for purge/cooling), Slurry Concentration: Not applicable (optical path must remain particle-free)
temperature:	-10°C to 50°C (operating), -20°C to 70°C (storage)

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