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Luzchem SPR-01, Instruction Manual, Page: 9 / 18

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Luzchem SPR-01 Instruction Manual Download Page 9

 

 

9 

located on the CD provided.  On older operating systems, the user has to 
initiate the installation of the driver: 

3.2.2.1

 

Navigate to the Start>Settings>Control Panel>Add New Hardware 

3.2.2.2

 

Follow the instructions on the screen 

3.2.2.3

 

Insert the Luzchem CD, and the operating system will find and install 
the appropriate driver 

3.2.2.4

 

To install the application follow the directions in part a. 

 

3.3

 

Starting the software 

To start the spectroradiometer application, double click the shortcut on the desktop, or 
the actual application in the Program Files folder.  Please note that the application is 
only compatible with the spectrometers sold by Luzchem.  If the software does not 
recognize the spectrometer, it will give an error message and close. 

 

3.4

 

Optimize Integration Time 

The optimize integration time function tests the intensity of the light and searches for 
an appropriate integration time.  This function is important because if the integration 
time is too short, the data is susceptible to errors introduced by noise.  If the 
integration time is too long, the spectrometer can saturate, and the data above the 
saturation point will be a flat line.  The spectrometer saturation level is 4000 counts. 

3.4.1

 

Navigate to the “Start Optimize Integration” tab 

3.4.2

 

Press the “Start Optimize” button 

3.4.3

 

Turn on the light and press “Go”.  Note that the optimize function does not 
require a dark measurement. 

3.4.4

 

The application will test different integration times in order to find the best 
one.  Once the optimization is done, a dialog box will inform the user of 
the optimized integration time.  If the integration time is less than 10 or 
greater than 1000, a warning message will appear.  Please note that the 
threshold for the spectrometer is 10 ms. An integration time lower than 10 
ms will result in inaccurate readings. 

3.4.5

 

If the optimized integration time falls in an acceptable range, all 
integration times in the program will be set to this value.  If the optimized 
integration time is less than 10, the integration times will remain the same, 
and if it is greater than 1000, the integration times will be set to 1000.  The 
user can override these values. 

3.4.6

 

If the signal saturates at 10 ms integration time the use of an attenuator is 
highly recommended (See section 2.4). 

 

Summary of Contents for SPR-01

Page 1: ...Spectroradiometers Instruction manual SPR 01 and SPR 02 Version 2 3 August 2004 Copyright Luzchem Research Inc ...

Page 2: ...er 5 2 3 Fiber optic cable 5 2 4 Attenuator 6 2 5 Verification lamp model SPR 01 only 6 3 Software Instruction manual 8 3 1 General 8 3 2 Software Installation 8 3 3 Starting the software 9 3 4 Optimize Integration Time 9 3 5 Power Intensity Spectra 10 3 6 Data reliability evaluation 12 3 7 Timed Acquisition 13 3 8 File Formats 15 4 Help 18 ...

Page 3: ...01 235 850 nm Detector Optical fiber Control Module USB cable Verification lamp Figure 1 1 Schematic diagram for SPR 01 Optical fibers are fragile and cannot be bent at any angle The minimum momentary bent radius is 60 mm and the minimum long term bent radius is 100 mm 4 inches Assemble your instrument as indicated above and connect the USB cable to an available port in your computer Software inst...

Page 4: ...rdware 2 1 Detector head Figure 2 1 shows the assembly of the detector head or light integrator The detector is constructed of PTFE encased in light scattering aluminum and has been designed for maximum efficiency in a low profile integrator Figure 2 1 Assembly of the detector head ...

Page 5: ...2 2 Spectrometer The heart of Luzchem spectroradiometers is a 2048 element spectrometer contained in the control module It covers a minimum range of 230 to 860 nm and has optical components to optimize ultraviolet detection Data points are acquired about every 0 3 nm however the software converts the data so that points are displayed at 1 nm intervals The spectrometer is quite robust and ideal for...

Page 6: ... head from moving If this connector moves it will be necessary to reinstall it matching exactly the calibration distance Contact Luzchem for assistance 2 4 Attenuator Luzchem spectroradiometers are supplied with a PTFE film attenuator that reduces the light input by about one order of magnitude A generic transmission curve is supplied with all attenuators Luzchem can perform a custom NIST traceabl...

Page 7: ...o a power spectrum should be between and 50 and 150 counts at 254 nm for an integration time of 1000 ms Figure 2 4 Positioning of the detector head on the verification lamp If the counts at 254 nm are significantly less than 50 change the batteries alkaline batteries are recommended If the problem is not resolved by this it could be an indication of a ruptured fiber in this case contact Luzchem fo...

Page 8: ...w previously acquired files The application also requires that the LabVIEW run time engine be loaded in the computer in use The LabVIEW run time engine is provided in the installation package 3 2 Software Installation 3 2 1 On a computer already having the spectrometer driver You may already have a driver installed for the hardware If this is the case all you need to do is install the application ...

Page 9: ...integration time is too long the spectrometer can saturate and the data above the saturation point will be a flat line The spectrometer saturation level is 4000 counts 3 4 1 Navigate to the Start Optimize Integration tab 3 4 2 Press the Start Optimize button 3 4 3 Turn on the light and press Go Note that the optimize function does not require a dark measurement 3 4 4 The application will test diff...

Page 10: ...t window and acquire a sample 3 5 5 Note that the data that is viewed on the acquisition graph can be changed by using the radio buttons beneath the graph Figure 3 1 Radio buttons select the sets of data displayed 3 5 6 To create a power spectrum from the desired data an appropriate calibration file must be chosen To use Luzchem s calibration file check the box labeled Use Luzchem s supplied calib...

Page 11: ...Visible and user selected spectrum Figure 3 3 These spectra can be viewed on the display graph by checking the radio buttons to the left of the numbers Figure 3 4 Figure 3 3 Definition of a customer selected integration range Figure 3 4 Shaded display of a selected integration range 3 5 10 Intensity spectra can be created using the Intensity Spectra button This will transfer the data from the acqu...

Page 12: ...ot meet the significance criterion set in the optimize tab If should be noted that Luzchem sets a very high standard as a default users should set values that meet their own requirements This is done in the Optimize tab where you will find in the left region the menu of Figure 3 6 You have three options An ON OFF switch serves the same function as that on the main window The percent of the data th...

Page 13: ... own light sources You can do this in the main screen Figure 3 6 Data reliability evaluation turned on Two controls set the criterion for data evaluation 3 7 Timed Acquisition The timed acquisition tab is very useful if you wish to see how the intensity of a lamp or light source changes over time It is very important to check your power management options before performing a timed acquisition that...

Page 14: ...4 The Total acquisition time must be greater than or equal to the acquisition interval If this condition is not satisfied an error message will appear and the acquisition will be cancelled Figure 3 8 Figure 3 8 Error message following selection of incompatible parameters for a timed acquisition 3 7 5 If integration time transmission delay number of samples is greater than the acquisition interval ...

Page 15: ...h on the bottom left hand side of the screen Next press Save Kinetic Trace The line of information will be saved with the file 3 7 13 In order to extract a spectrum from the timed acquisition choose the time at which you wish to extract the spectrum Next press Save Spectrum The line of information will be saved with the file The file will also be transferred to the Spectroradiometer tab where it c...

Page 16: ...ength array separated by tabs Line 11 Time array separated by tabs Line 12 Spectrum at time t1 separated by tabs Line 13 Spectrum at time t2 separated by tabs 3 8 3 Kinetic Trace Line 1 Spectroradiometer Kinetic Line 2 Wavelength at which the kinetic trace was taken Line 3 Line of information Line 4 Serial number of spectrometer Line 4 Time per point sec Line 6 11 Line 12 Time tab Power Intensity ...

Page 17: ...me time at which spectrum was extracted Line 11 Wavelength tab Intensity tab Power Line 12 Wavelength w1 tab Intensity at w1 tab Power at w1 if applicable Line 13 Wavelength w2 tab Intensity at w2 tab Power at w2 if applicable ...

Page 18: ...18 4 Help To access the in program help click on the Help button or navigate to Help Topic Help on the menu bar ...

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