SEC2020 Spectrometer system

Wide wavelength range spectrometer

SEC2020 Spectrometer system
- 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

The SEC2020 spectrometer system is a spectrometer that enables various spectrometric measurements, focusing on spectroelectrochemical measurements. The high-performance grating and optical design, makes possible to measure with high sensitivity in a wide wavelength range, from ultraviolet to near infrared (UV/VIS/NIR), with a single unit.
For the light source, a compact modularized deuterium halogen lamp is used, which is fixed to the cell holder on the accessory platform for the measurement.
Furthermore, the spectrometer and the light source come with SMA905 connector, which makes possible to connect various optical fibers and probes, to construct the original measurement system.

Structure of SEC2020 spectrometer system

The SEC2020 spectrometer system consists of the following spectrometer, cell holder, light source, platform and collimating lens. For spectroelectrochemical measurements and absorbance measurements, each instrument is fixed on the platform.
For measurement using immersion probe or optical fiber, you can use it by directly connection of the optical fiber to the spectrometer and light source.
The spectrometer is connected to a PC with a USB cable and controlled with Spectra Smart analysis software.

Contents for the SEC2020 Spectrometer system

  • Optical structure
  • Software
  • Specifications
  • Movies
  • Application

Optical structure

The optical structure of the SEC2021 Spectrometer from the SEC2020 Spectrometer System is shown below.

        SEC2021 Spectrometer structure
① SMA 905 connector
② Slit
③ Collimating mirror
④ Grating
⑤ Focus mirror
⑥ 2048 element CCD array

The SEC 2020 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.

SpectraSmart analysis software

    SEC2020 Spectrometer system
● Absorbance measurement
● Reflection measurement
● Transmittance measurement
● Chromaticity diagram display
● Radiation intensity measurement
● Time-varying monitoring function
● Video capture function
● Data overwriting function

SEC2020 Spectrometer system specifications

Catalog No. Description
013609 SEC2020 Spectrometer system
Spectrometer specification
Description SEC2021-025-DUVN
Detector 2048 element linear silicon CCD array
Detector range 200 ∼ 1025 nm
Grating Blaze wavelength (300 nm)
Slit 25 µm
Wavelength resolution 1.3 nm
Fiber connector SMA905 Core diameter: 600 µm NA=0.22
Interface USB2.0
Operating system WindowsTM 7 ⁄ 8.1 ⁄ 10 (32bit ⁄ 64bit)
Size (W×D×H) 86×110×32 mm
Light source specification
Description SEC2022
Light type Deuterium halogen light source
Wavelength range 200 ∼ 1700 nm
Stability ‹0.1%
Drift 0.25%/h
Bulb life ›1000 h (D2 lamp) ⁄ ›2000h (halogen lamp)
Fiber connector SMA905
Power consumption 12 DCV, 25 W
Size(W×D×H) 100×165×46 mm
Cuvette holder SEC2023
Platform SEC2024

Movie contents

In this section introduction movies will be available gradually! The first movie will show quickly the setup of the system, installation of the software and one standard example for the application.

Application - Synchronizing EC and Spectrum

SEC2020 Spectrometer system and Model 2325 Bi-Potentiostat

Cyclic voltammetry




Trigger connection

The SEC2021 Spectrometer supports Trigger Mode for synchronized measurement with external device. It is a function to synchronize spectroscopic measurement and tie measurement with an external measurement.

Pin No. Signal Definition Function
1 Power 5V Output When connecting to the PC's USB port, this pin is connected to VBUS. Up to 100 mA current
2 No connection
3 No connection
4 Output Shutter Shutter ON/OFF
5 Output D2_ON D2 light source ON/OFF
6 Output HAL_ON Halogen light source ON/OFF
7 Input Trigger-IN TTL
8 GND GND Ground

SEC2021 Spectrometer Port Pin number

Fig. 1 SEC2021 Spectrometer Port Pin number.

Measurement example using cuvette type spectroelectrochemical cell

UV-visible absorption spectrum and absorption change on electrode reaction can be obtained by using optically transparent electrode(OTE). Gold or Platinum mesh electrode was used as an OTE. Cyclic voltammetry and Absorbance of the 2 mM potassium ferricyanide, as the reference of the absorbance, performed in a SEC-C Thin Layer Quartz Glass Spectroelectrochemical cell are shown below.

Electrochemistry Spectrometry
Cyclic voltammetry for 2 mM potassium ferricyanide.
Fig. 1 Cyclic voltammetry for 2 mM potassium ferricyanide.
Absorption spectra of the electrolytic balance for 2 mM potassium ferricyanide electrolyzed at different potential.
Fig. 2 Absorption spectra of the electrolytic balance for 2 mM potassium ferricyanide electrolyzed at different potential.
Test solution : 2 mM Potassium ferricyanide / 1 M KNO3
Measurement parameter
Working electrode: SEC-C Pt Gauze working electrode
Reference electrode: RE-2BP Calomel Reference electrode
Counter electrode: SEC-C Pt counter electrode

Electrochemical parameters
Technique: Cyclic voltammetry
Initial E : +500 mV
Final E : 0 mV
Scan Rate (Volt) : 5 mV/S
Sensitivity : 10-4
Measurement: Spectrum
Setting: Trigger (SW Level trigger)
Time sequence: Sampling interval: 0.02 s
                          Measurement time: 600 s