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SR4 VIS-NIR Spectrometers

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Product Details

The SR4 is a high performance spectrometer with high-speed spectral acquisition and excellent signal-to-noise ratio (SNR) performance for diverse applications across the UV-visible-shortwave NIR range. This multipurpose spectrometer is anchored by a 3648-element CCD-array detector and robust electronics to deliver measurement capabilities on the line or in the lab. Strong thermal wavelength stability and low stray light performance ensure reliable, reproducible results, even in challenging industrial environments.

Each SR4 spectrometer comes with OceanDirect, a powerful, cross-platform Software Developers Kit (SDK) with an Application Programming Interface (API). OceanDirect provides users the capability to optimize spectrometer performance and access critical data for analysis.

SR4 is highly configurable, with models covering different wavelength ranges from approximately 190-1100 nm and entrance slit options in widths of 5 µm to 200 µm. The SR4 spectrometer is compact, versatile and compatible with Ocean Insight light sources and accessories. SR4 demonstrates effective results for applications from measuring distinct spectral peaks within plasmas and emission sources to detecting subtle changes in absorbance in DNA, proteins and other biological samples.

Product Overview

  • Optimized performance with high speed acquisition and great SNR
  • Ideal for integration into OEM and industrial applications
  • Triggering mode options and High Speed Averaging Mode hardware-accelerated signal averaging tool
  • Available in 5, 10, 25, 50, 100 or 200 µm wide slits

Each SR4 also includes OceanDirect, a powerful, cross-platform Software Developers Kit. 


Optical and Spectroscopic

Specification SR2 SR4 SR6
Wavelength Range
See Manual for full specifications
220 - 1050 nm 220 - 1050 nm 185 - 1100 nm
Resolution (FWHM)
See Manual for full specifications
0.28 - 11.52 nm 0.42 - 11.34 nm 0.36 - 11.52 nm
Integration Time 1 μs - 2 s 3.8 ms - 10 s 7.2 ms - 5 s


Connectors USB Type-C, SMA, 16 pin Samtec TFM, RS-232


Physical Dimensions 88.1 x 63.5 x 31.45 mm
Weight 275 g


Temperature (operation) 0 °C - 55 °C
Temperature (storage) -30 °C to 70 °C


Measurement techniques