3 Wavelength-Range Options

Our NIR-series Near-infrared Spectrometers provide full spectral analysis in real time and meet a wide variety of measurement needs. Three different NIR systems provide you with multiple wavelength ranges for measuring sugar, alcohol, moisture, fats and more. These small-footprint, plug-and-play systems provide a full spectrum in one millisecond, and offer optical resolution as low as 3.0 nm FWHM.

InGaAs Detector Cooled for Optimum Signal-to-Noise and Sensitivity

The NIR-series Spectrometers each feature a Hamamatsu InGaAs linear-array detector with onboard thermoelectric cooling. A thermistor monitors the array's temperature and a thermoelectric device can cool each array to 30 °C below ambient, keeping the array stable to within ±0.1 °C. You can set and monitor the detector's temperature via software.

NIR512 Spectrometer: 900-1700 nm

The NIR-512 Spectrometer features a 512-element InGaAs linear-array detector. With the NIR-512, the only diffractive grating available is Grating N1, and it provides a 900-1700 nm wavelength range, producing an optical resolution of <5.0 nm FWHM.

NIR256-2.1 Spectrometer: 1200-2100 nm or 900-2100 nm

The NIR256-2.1 Spectrometer uses a 256-element InGaAs linear-array detector. With the NIR256 you have two grating options. With Grating N1, you have a 1200-2100 nm wavelength range. Grating N2 provides a 900-2100 nm wavelength range.

NIR256-2.5 Spectrometer: 900-2500 nm

The NIR256-2.5 Spectrometer extends farther into the NIR, acquiring real-time spectra up to 2.5 µm. With the NIR256-2.5, you select Grating N2, which provides a wavelength range of 900-2500 nm.

Plug-and-Play USB Operation

All of the NIR-series Spectrometers interface to PCs via USB 2.0. When operating the spectrometer via the USB port, you have access to the spectrometer’s EEPROM, where wavelength calibration coefficients and other data unique to your spectrometer are stored. SpectraSuite Spectroscopy Operating Software reads these values for easy setup and swapping among PCs. A 16-bit A/D converter is mounted with the spectrometer in the same housing. A 5 VDC wall transformer (included) is required. These systems also have a serial port for interfacing to PCs, PLCs and other devices that support the RS-232 protocol.

NIR-512: Call for Price  NIR256-2.1: Call for Price NIR256-2.5: Call for Price  SpectraSuite: Call for Price 

Use this chart to help determine the best entrance aperture slit size for your application. Note that the smaller-sized slits provide excellent resolution, but lower levels of throughput to the detector.

NIR-series Applications

•               Sugar analysis

•               Alcohol analysis in brewing

•               Moisture analysis

•               Nitrogen detection in soils

•               Pulpwood QC

•               Analysis of lubricants

•               Laser characterization

Detectors

In the “NIR” Spectrometers, we offer three different InGaAs linear array detectors, one 512-element array and two 256-element arrays. The Hamamatsu detectors used in the “NIR” Optical Bench are InGaAs photodiode linear arrays with each pixel connected to a charge amplifier array consists of CMOS transistors. These detectors deliver high sensitivity and stable operation in the near infrared.

The detectors all include onboard thermoelectric cooling. A thermistor

monitors the array's temperature and a thermoelectric device can cool the arrays to 30 °C below ambient, keeping the array stable to within ±0.1 °C. In addition, you can set and monitor the detector's temperature via software.

Fixed Entrance Slits

An option available with user-configured “NIR” spectrometers is selecting the size of the entrance

aperture. Entrance slits are rectangular apertures, 1-mm tall and various widths from 10 µm to

edge of the

200 µm, with the width determining the amount of light entering the optical bench. A slit is fixed

in place; it only can be changed by our technicians. You can opt against having a slit, in which case SMA 905 Connector.

the diameter of the fiber connected to the spectrometer determines the size of the entrance aperture.