AvaSpec-ULS2048LTEC Fiber Optic Spectrometers

Long integration times in general are equivalent to higher dark noise. Avantes Thermo-Electric Cooled (TEC) spectro-meters systems overcome this problem by cooling the detector.

AvaSpec-ULS2048LTEC Fiber Optic Spectrometers

These recently re-designed instruments are equipped with triple stage cooling, keeping your detector at a optimal 5 degrees Celsius (maximum -35°C difference from ambient temperature).

The detector cooling provides a significantly lower and more stable dark baseline and PRNU level. Dark noise is reduced by a factor of 2-3. This allows the ULS2048LTEC to be used in very low light conditions, such as fluorescence and Raman measurements. If needed, integration times of more than 5 seconds are possible.

The AvaSpec-ULS2048LTEC has an integrated temperature regulator, USB2.0 high-speed interface and two cooling fans to actively ventilate the heat sink of the Peltier cooling elements. The spectrometer power supply is integrated into the housing. The Replaceable Slit option is now also available for this spectrometer!

Technical Data
Optical BenchULS Symmetrical Czerny-Turner, 75 mm focal length
Wavelength range200-1100 nm
Resolution0.06-20 nm, depending on configuration (see table)
Stray-light0.04-0.1%, depending on the grating
Sensitivity470,000 counts/µW  per ms integration time
DetectorCCD linear array, 2048 pixels
Temperature cooled CCDMax. ΔT = -35°C versus ambient
Time to stabilize

4 Minutes

Dark baseline improvement @ΔT=-35°C and it > 5 sec

> Factor 6

PRNU improvement @ΔT=-35°C and it > 5 sec>Factor 8
3 stage Peltier cooling internal Power supply@ΔT=-35°

5VDC, 3.0A

Signal/Noise300:1
AD converter16 bit, 2 MHz
Integration time1.11 ms – 10 minutes
InterfaceUSB 2.0 high speed, 480 Mbps
RS-232, 115.200 bps
Sample speed with on-board averaging1.1 ms /scan
Data transfer speed1.8 ms /scan (USB2)
430 ms / scan (RS-232)
Digital IOHD-26 connector, 2 Analog in, 2 Analog out, 3 Digital in, 12 Digital out, trigger, sync.
Power supply100-240VAC, 50W
Dimensions, weight250 x 179 x 144 mm, 3.6 kg
Order Info
AvaSpec-ULS2048LTEC-USB2Thermo-Electric Cooled Fiber-optic Spectrometer, 75 mm Ultra-Low Stray-light AvaBench, 2048L pixel 3-stage TE-cooled and regulated CCD detector, USB2 high-speed interface, incl. AvaSoft-Basic, USB cable, desktop housing.
Specify grating, wavelength range and options
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