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Products / Light Analysis /Monochromators & Spectrographs /1/2m&1/4m Monochromator/Spectrograph /

1/2m&1/4m Monochromator/Spectrograph

Overview Specification Sheet DK Series Accessories Downloads & Drivers Order Now!

DK480 1/2m FL Monochromator and Spectrograph

The Digikröm DK480 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.

Features

-Triple-grating turret allows high efficiency scanning across a broad spectral range with motorized slits

- 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

- Connects to any computer via RS 232 or IEEE-488.

DK240 1/4m FL Monochromator and Spectrograph

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 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.

Features

- 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 automaic filter switching.
- Suitable for fluorescence and absorption studies, detector characterization, thin film measurements, etc.

Product Brochures:

DK240 | DK480

General Specifications

Model	DK240	DK480
Design	Czerny-Turner: Standard Triple Grating Turrets
Focal Length	240mm	480mm
f/#	3.9	7.8
Reciprocal Dispersion	3.2nm/mm (with 1200g/mm grating)	1.6nm/mm (with 1200g/mm grating)
Wavelength Drive	Worm and wheel with micro-processor control and anti-backlash gearing. Bi-directional. Usable in positive or negative grating orders.
Wavelength Precision	0.01nm (with 1200gv/mm grating)
Wavelength Accuracy	±0.30nm standard (with 1200gv/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: 10um – 3000um Height: 2mm – 20mm
Max Resolution	0.2nm (with 1200g/mm grating and	0.1nm (with 1200g/mm grating)
Gratings	1-3 gratings (68x68mm standard) (68x84mm optional) must be purchased. See Gratings (DK) page Click here to view Gratings.
Software	Demonstration control program and LabView Driver included.
Power	100 – 240V 50/60Hz 60W 220/230/240 50/60Hz @0.5A optional
Interface	RS232 Standard

Gratings and Optical Resolutions

Part #	Ruling (g/mm)	Peak (nm)	Range (nm)	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
AG0600-01250-686	600	1200	800 - 1300	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

Schematic

DK240

DK480

Terminology Guide

Wavelength Precision

It is the ability of the device to return to the same wavelength. The measured wavelength by the equipment should not drift over the range provided.

Wavelength Accuracy

It is a measure of the deviation of the wavelength when the standard wavelength is measured. You would expect the vaue of the wavelength to be the standard value with the deviation everytime you take a measurement.

Wavelength Resolution

It is the the ability of the instrument to differentiate between different wavelength of light.

Slewing speed

It is the rate which the wavelength is being read.

Bandpass

The range of frequencies or wavelengths that can pass through the slits

1-3 gratings (68x68mm standard) (68x84mm optional) must be purchased. See Gratings (DK) page Click here to view Gratings.

DK Accessories
Part N/O	ITEM	Description
DKBS	Bi-lateral slit option	Bi-lateral slit option for DK240 / 480. Both sides of slits are automatically controlled for maintaining image centering when wider slits are necessary.(Tolerance: ± 10µm)
DKGPIB	Connection	Internal IEEE-488 / GPIB communication interface option for DK240 / 480. Separate output connector from monochromator.
IR240 IR240SP*	Infrared (gold) coatings	Infrared (gold) coatings on optics for DK240. Enhances transmission by up to 40% between 600 - 1100nm. Not suitable for work below 600nm.
IR480 IR480SP*	Infrared (gold) coatings	Infrared (gold) coatings on optics for DK480. Enhances transmission by up to 40% between 600 - 1100nm
DK2401	Handheld monochromator controller	Handheld monochromator controller for DK240 / 480. Allows local control of monochromator whether or not a computer is available.
DK24PS	Cable	RS 232 Cable assembly for PS/2 style computer
DK24MA	Cable	RS 232 cable assembly for MAC style computer
DK24IC	Cable	IEEE-488/GPIB universal cable assembly
AB300	Filter Wheel	Six position - 1" diameter automatic filter wheel assembly that bolts directly to the DK entrance.Receives power and commands directly through DK unit.
DKSP-to-DK		Attachment to allow DKSP spectrograph to operate as a monochromator. Includes CM standard 6-fixed slit set.
AB200	Filter Mount	Single filter carrier that mounts directly between DK unit and accessory.
MCL-100	Collimator: Universal Output Conditioner	An output module designed to work with both CM and DK model monochromators. The adjustable position of the internal lens allows the user to condense or collimate for UV to NIR wavelengths.

Click here to access and purchase from the Accessories Page.

DK240/480 Demonstration Software-Windows™

DK series monochromator demonstration software is written in Microsoft® Visual Basic™ 16 bit, Ver. 4.0 for Windows™ and will run on Windows™ 3.11, 95, 98, 2000, and NT 4.0. The demonstration software, along with instructions for operation, is found on the CD software disk. If you are interested in writing custom software that supports the DK240/480, we will be pleased to send this source code upon request. If you have any questions about the operation of your monochromator or if you have suggestions, please contact us. We appreciate your comments and suggestions.

Manual:

480 User Manual Rev. March 2009

Software

DK240/242/480 Labview Executable Demo

DK240/242/480 Labview Source code Demo

DK240/242/480 Labview GPIB Executable Demo

DK240/242/480 Labview Source GPIB Demo

Labview Runtime Engine

NOTE: please install the Labview Runtime Engine and Labview Full Visa (the latest version), if your computer doesn't have any of these.

Labview VISA

DK240/242/480 Visual Basic Executable Demo
DK240/242/480 Visual Basic Source Demo
DK240/242/480 Visual C++ Executable Demo
DK240/242/480 Visual C++ Source Demo
Monochromator Full CD Software Installation

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	Availability	Reference Price (USD)
DKSP480 1/2 meter Spectrograph	4-6 Weeks	Request for quote
DK480 1/2 meter Monochromator	4-6 Weeks	Request for quote
DKSP240 1/4 meter Spectrograph	4-6 Weeks	Request for quote
DK240 1/4 meter Monochromator	4-6 Weeks	Request for quote