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DK240 1/4m Monochromator

DK240: Direct Digital Drive/Constant Spectral Resolution


- Connects to any computer via RS 232 or IEEE-488.
- Motorized slits
- Triple-grating turret allows high-efficiency scanning across a board spectral range
- May be factory configured as a monochromator or spectrograph
- Scans in both directions and with Constant Spectral Resolution (CSR)
- Integrates with SP filter wheel for automatic filter switching.
- Suitable for fluorescence and absorption studies, detector characterization, thin film measurements, etc.


The Digikröm DK240 is a complete computer integrated solution. Easy-to-use commands control the triple grating turret, motorized slits, and optional motorized filter wheel for quick and easy sorting. Instrument mode can be set for constant spectral resolution (CSR), where the slit width is automatically modified to compensate for the change in dispersion with wavelength to maintain a constant spectral bandpass.
Rugged cast construction, A-Thermal design, and SP direct grating drive make this unit the most repeatable and reliable in its class. Each instrument is calibrated and certified before delivery.


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Design Czerny-Turner: standard Triple grating turrets
Focal Length 240mm
f/# 3.9
Reciprocal Dispersion 3.2nm/mm (with 1200g/mm grating)
Wavelength Drive Worm and wheel with microprocessor control and anti-backlash gearing.
Bi-directional. Usable in positive or negative grating orders.
Wavelength Precision 0.01nm (with 1200g/mm grating)
Wavelength Accuracy ± 0.30nm standard (with 1200g/mm grating)
Scan Speed 1 to 1200nm/min (with 1200g/mm grating)
Stray Light < 0.01% @220nm (Nal)
Slits standard: Unilateral - computer controlled - curved entrance - straight exit
Width: 10µm - 3000µm
Height: 2mm - 20mm
Max Resolution 0.2nm (with 1200g/mm grating)
Gratings 1 to 3 gratings (68 x 68mm standard) (68 x 84mm optional) must be purchased.
See DK gratings for more options
Software Demonstration control program and LabView driver included
Power 100 - 240V 50/60Hz 60W
220/230/240 50/60Hz @0.5A optional
Interface RS 232 standard
Weight 35lbs
Warranty 1 year
- DKBS: Bi-lateral slits
- DKGPIB: IEEE-488 communication interface (internal)
- DL2400 and handheld controllers for local control
- IR240: Gold optics
- AB300: Automated 6 position filter wheel
See accessories for more options