SEC2120 Spectrometer system
Scheduled for release on February 16, 2026 (Monday).

Features

‑ Wide wavelength UV/VIS/NIR
‑ High sensitivity, resolutions and quality
‑ Deuterium halogen light source
‑ Measuring platform and analysis software included
‑ SMA 905 connection terminal
‑ Exclusive storage box

Improvement highlights of the SE2120 Spectrometer system

SEC2121 spectrometer features a 1024-element detector with a pixel size of 28 x 200 µm, offering twice the sensitivity of a 2048-element detector (14 x 200 µm, blue line in the figure below). This marks a significant enhancement in sensitivity compared to SEC2021 spectrometer.

 

Sensitivity comparison
SEC2121, 1024-element
2048-element detector
SEC2021, 2048-element

SEC2121 is particularly sensitive in the UV region

 

 

Strong light detection
SEC2121, Integration time 250 µs (Min.100 µs)
SEC2021, Integration time 1 ms (Min.1 ms)

SEC2021 would overload when measuring strong light, but SEC2121 uses a high-speed exposure CMOS detector, so it can measure strong light by shortening the integration time.

 

Compared to SEC2021 spectrometer, SEC2121 spectrometer also has an improved signal-to-noise ratio.

 

 

Optical structure

The optical structure of the SEC2121 Spectrometer from the SEC2120 Spectrometer System is shown below.

        

① SMA 905 connector
② Slit
③ Collimating mirror
④ Grating
⑤ Focus mirror
⑥ 2048 element CCD array

The SEC 2120 Spectrometer System adopts Zernitana optical mount. This system is an M-shaped structure symmetrical about the grating ④ and is an optical system with extremely small aberration.

SEC Spectra analysis software

SEC Spectra is a software program for the portable spectrometers system SEC2120 Spectrometer system.
The software is available in three languages: English, Japanese and Chinese.

➨ It offers a wide variety of optical measurements methods:
•  Absorbance measurement
•  Reflection measurement
•  Transmittance measurement
•  Concentration measurement
•  Relative irradiance measurement

➨ A wide range of data processing functions:
•  Time-varying monitoring function
•  Video capture function
•  Data overwriting function

 

Basic software operation

Here, two examples of the software operation are brief explained, Measurement data analysis using SEC Spectra and Saving current Spectrum (Current spectrum curves as a temporary log).

Measurement data analysis using SEC Spectra

For the data analysis using the SEC Spectra, the measurement data file must be saved in a SEC Spectra's proprietary file format (extension .sps), the file in CSV or TXT format can not be analysis using the software.

Spectrum overlay display

Display of the multiple spectrum in the same window, one way to compare the spectrum.

Loading and playing

The time sequence file saved in Create file at every tracking interval can be opened, SEC Spectra will display the playback tools for the time sequence file. As shown in the left figure, there are icons that allows the user to Fast-rewind, Play, Pause, and Fast-forward the playback of time sequence. The open file will keep playing over and over again once it is loaded until Pause button is pressed.

Saving current Spectrum

Depends of the experimental requiriment, it is possible to choose from the four saving ways below:
▸  Individual Spectrum curves from the toolbar
▸  Individual Spectrum curves from the spectrum data pane
▸  All Spectrum curves in the current window
▸  Current spectrum curves as a temporary log
Below is a example for the

Current spectrum curves as a temporary log

In addition to saving the spectrum as a file, SEC Spectra allows to save the spectrum curve being measured as a temporary log. The temporary log are displayed on the graph being measured, so if you change the integration time of the original Spectrum curve, the difference between the integration time of the two curves can be observed.

SEC2120 Spectrometer system specifications