1/4 Meter Monochromator
                 

• Connects to any computer via RS232 or IEEE-488 • Motorized slits • Triple-grating turret allows high efficiency scanning across a broad 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

FEATURE VALUE
Focal Length 240 mm
f/# 3.9
Wavelength Precision
and reproducibility
0.007 nm(with 1200g/mm grating)
Wavelength Accuracy ± 0.3nm standard(with 1200 g/mm grating)
Scan Speed 1 to 1200 nm/min(with 1200 g/mm grating)
Stray Light < 0.01% at 220 nm(Nal)
Slits Unilateral, computer controlled, straight entrance
and straight exit standard.
Width - 10 to 3000 μm
Height - 2 to 20 mm
Reciprocal Dispersion 3.2 nm/mm(with 1200 g/mm grating)
Grating One to Three Gratings(68 X 68 mm standard,
68 X 84 mm optional) must be purchased. See appendix A for options
Power 100-240 V, 50/60 Hz, 60 W
Computer Interface RS232
Options DKBS - Bi-lateral slits
DKGPIB - IEEE-488 communication interface (internal)
DK2401 - Hand-held controllers for local control
IR240 - Gold optics
DKPURGE - Purge port

The Workhorse: Direct Digital Drive/Constant Spectral Resolution

The Digikrom 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 in the change in dispersion with wavelength to maintain 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 prior to delivery.

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Series Options and Accessories

DKBS

Bi-lateral slit option for DK240/480
BOth sides fo slits are automatically controlled for maintaining image centering when wider slits are necesary(tolerance ±10㎛)

DKGPIB

Internal IEEE-488/GPIB communication interface option for DK240/480
Seperate output connector from Monochromator

IR240

For use with DK240
Infrared(gold) coatings on optics for DK240
Enhances transmission by up to 40% between 600-1100nm
Not suitable for work below 600nm

IR240SP

Same as above, for use with DKSP240

IR480

For use with DK480
Infrared(gold) coatings on optics for DK480
Enhances transmission by up to 40% between 600-1100nm

IR480SP

Same as above, for use with DKSP480

DK2401

Hand-held monochromator controller for DK240/480
Allows local control of monochromator when computer is not available or in series with a computer

DK24PS

RS232 Cable assembly for PS/2 style computer

DK24MA

RS232 Cable assembly for MAC style computer

DK24IC

IEEE-488/GPIB universa cable assembly

AB300

Six position, 1" diameter automatic filter wheel assembly that bolts directly to DK entrance
Recieves power and commnad directly through DK unit

DKSP-TO-DK

Attachment to allow DKSP Spectrograph to operate as a monochrometor
It includes CM standard 6-fixed slit set

AB200

Single filter carrier that mounts directly between DK unit and accessories

DK Standard Ruled Gratings   Size = 68 X 68 mm

SP Part # Ruling
(g/mm)
Peak(nm) Range(nm)
@>30%T
Peak %T
AG2400-00240-686 2400 240 180-680 70
AG1200-00200-686 1200 200 180-450 65
AG1200-00250-686 1200 250 180-460 70
AG1200-00300-686 1200 300 200-750 72
AG1200-00500-686 1200 500 330-1000 83
AG1200-00600-686 1200 600 400-1500 80
AG1200-00750-686 1200 750 480-1500 85
AG1200-01000-686 1200 1000 550-1500 75
AG0600-00500-686 600 500 350-1300 80
AG0600-01200-686 600 1200 800-3000 85
AG0600-01600-686 600 1600 950-3000 93
AG0300-00500-686 300 500 310-1100 80
AG0300-02000-686 300 2000 1200-4000 88
AG0300-02500-686 300 2500 1500-6000 88
AG0300-03000-686 300 3000 1800-6000 80
AG0150-00500-686 150 500 320-980 72
AG0150-04000-686 150 4000 2500-9000 93
AG0075-08000-686 75 8000 5000-15000 82
AG0050-00600-686 50 600 400-1200 78
AG0050-12000-686 50 12000 7500-20000 82