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DK Series Monochromator/Spectrograph

DK Monochromator and DK Spectrometer

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.

 Visit the Specification Sheet Tab for details on performance and resolution.


The Digikrom DK Monochromator and DK Spectrometer Series has two sets of focal length at 240mm & 480mm. The systems is a completely computer integrated solution with user friendly commands to control the triple grating turret, motorized slits, and optional motorized filter wheel for quick and easy sorting. The DK/DKSP system 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 very reliable in its class. Each instrument is calibrated and certified prior to delivery.

 





Gratings and Optical Resolutions

Gratings are to be ordered along with DK240 and DK480 allowing users to order their desired grating to meet their needs. 

Click here to view gratings.



Operations

Each Digikröm contains its own microprocessor, it is controlled via a standard serial port (RS232), IEEE-488 port (GPIB) option, or with SP's hand-held controller option. This compatibility allows your computer, for example, to make automatic adjustments of bandwidth through motorized slits, to select gratings, choose scan speeds and to store your changes in memory. This versatility is intrinsic to the instrument.


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


Schematic




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




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: 


DK240/242/480 User Manual Rev. March 2009


                                                                                                                                                                          pdf.png








Software



image.png DK240/242/480 Labview Executable Demo


                                                                                                                   

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image.png DK240/242/480 Labview Source code Demo

                                                                                                                                                                         

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image.png DK240/242/480 Labview GPIB Executable Demo


                                                                                           

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image.png DK240/242/480 Labview Source GPIB Demo

                                                                                                                              

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image.pngLabview 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.

 

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image.pngLabview VISA 

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DK240/242/480 Visual Basic Executable Demo

                                                                                                                                   

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DK240/242/480 Visual Basic Source Demo


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Learn C++ from Scratch: The Complete Guide for BeginnersDK240/242/480 Visual C++ Executable Demo


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Learn C++ from Scratch: The Complete Guide for BeginnersDK240/242/480 Visual C++ Source Demo

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Monochromator Full CD Software Installation

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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.


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Technical Assistance and Email Quotations (Recommended for Custom Orders, inquiries)

For technical assistance, custom orders or email quotations, drop us an email at info@simtrum.com.

We will get back to you within 3 working days.


Local Same Day Service

SINGAPORE: For same day service, please contact us at 6996 0391. Office Hours: 9am - 6pm (+8GMT)

For more contact information click here.


International Inquiries

SIMTRUM provides worldwide shipping and inquiry management. Please contact us for more information.



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DK240 - Parameter

DKSP240 - Parameter

DK480 - Parameter

DKSP480 - Parameter

DK240 - Download

DKSP240 - Download

DK480 - Download

DKSP480 - Download

Accessories

Motorized Actuator Adapters

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(USD)