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HR4 NIR Spectrometers

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Product Details

The HR4 is a high-resolution spectrometer with rapid acquisition, low stray light and great thermal stability for applications from plasma monitoring to DNA/RNA analysis. HR4 is compact and robust, with enhanced electronics and excellent thermal wavelength stability to ensure reliable performance in demanding environments.

HR4 models cover UV-Vis, Vis-NIR and UV-NIR options within the wavelength range from ~190-1100 nm, with a choice of slit width sizes to help users manage throughput and optical resolution.

The HR4 spectrometer is compatible with SMA 905-terminated light sources and accessories, allowing users to optimize setups for different applications. With its high resolution performance and thermal stability, HR4 allows users to monitor smaller spectral differences within sample response. For example, HR4 is a desirable choice for optical emission spectroscopy applications in semiconductor manufacturing, where maintaining accuracy in identifying different spectral peaks is critical to certain processes.

Each HR4 spectrometer comes with OceanDirect, a powerful, cross-platform Software Developers Kit with an Application Programming Interface. OceanDirect provides users with the ability to optimize spectrometer performance, access critical data for analysis, and enable High Speed Averaging Mode, a function available with newer-model Ocean Insight spectrometers that dramatically improves spectrometer signal to noise ratio performance.

Product Overview


  • High resolution performance -- <1.0 nm (FWHM) with 25 µm slit (depending on configuration)

  • Excellent thermal stability -- ensures reliable performance in demanding environments

  • High Speed Averaging Mode -- hardware-accelerated signal averaging function that dramatically boosts signal to noise ratio

  • Configurability -- multiple grating and slit options provide flexibility within range from ~190-1100 nm


Optical and Spectroscopic

Specification HR2 HR4 HR6
Wavelength Range
See Manual for full specifications
220 - 1100 nm 220 - 1100 nm 185 - 1100 nm
Resolution (FWHM)
See Manual for full specifications
0.08 - 7.12 nm 0.06 - 7.24 nm 0.08 - 7.24 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 148.8 x 106.4 x 48.2 mm
Weight 930.6 g


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


Measurement techniques