JP Selecta 4120026, Manual

Page: 21 / 32

MANUAL DE INSTRUCCIONES CODIGO 80247 REV A Marzo/2011 (Sujetas a modificaciones sin previo aviso) Pag.: 21
J
.P. SELECTA s.a. Autovía A2 Km 585.1 Abrera 08630 (Barcelona) España Tel 34 93 770 08 77 Fax 34 93 770 23 62
e-mail: selecta@jpselecta.es - website: http://www.jpselecta.es
3 OPERATING PRINCIPLE
VR-2000 equipment is composed of five parts:
•
An halogen lamp to supply the light.
•
A monochromator to isolate the wavelength of interest and to eliminate unwan-
ted second order radiations.
•
A compartment for sample cuvettes.
•
A photodetector to receive light transmittance and to convert it to electrical
sign.
•
A digital display where absorbance, tramittance and concentration values are
shown.
The halogen lamp light, focus on the monochromator entrance where a collimated
mirror points the light beam towards the diffraction grating.
The diffraction grating diffuses the light beam to produce an spectrum. A part of it
centers in the monochromator output slot by means of another collimated mirror.
The wavelength light beam selected passes through a filter which helps eliminating
second order radiations from the diffraction grating.
This light beam goes through the sample, and then the photodetector produces an
electrical sign used to make the transmittance or absorbance calculations, shown in
the digital display.
3.1 Functions
VR-2000 has 3 functions:
- Photometry:
Test mode can be switched between ABS, %T and Energy. Test
results can be stored (up to 200 groups) and print out.
- Quantitative:
Two methods are included in the menu: Coefficient Method and
Standard Curve Method. The regression equation (up to 20 groups)
and the test results (up to 200 groups) can be stored in the RAM and
printed out.
- Utility:
User can set their favourite items to keep the equipment work in the
best conditions. You can calibrate Dark Current, Calibrate Wavelength,
Set Light Source Switch Point and Load Default Setting.
MANUAL DEINSTRUCCIONES CODIGO 80247 REV 0 Marzo/10 (Sujetas a modifi c a c io n es s in p re v io a v iso ) P a g.: 22
J
.P. SELECTA s .a. Ctra . NII Km 585. 1 A b rera 08630 (Bar c el ona) Es paña Tel 34 93 770 08 77 Fax 34 93 770 23 62
e-mail : sele c ta@j p sele c ta . es - web site : h tt p://www. j p sele c ta . es
3 OPERATING PRINCIPLE
VR-2000 equipment is composed of five parts:
•
An halogen lamp to supply the light.
•
A monochromator to isolate the wavelength of interest and to
eliminate unwanted second order radiations.
•
A compartment for sample cuvettes.
•
A photodetector to receive light transmittance and to convert it to
electrical sign.
•
A digital display where absorbance , tramittance and concentration
values are shown.
The halogen lamp ligh t, focus on the monochromator entrance where a
collimated mirror points the light beam towards the diffraction grating.
The diffraction grating diffuses the light beam to produce an spectrum. A
part of it centers in the monochromator output slot by means of another
collimated mirror.
The wavelength light beam selected passes through a filter which helps
eliminating second order radiations from the diffraction grating.
This light beam goes through the sample , and then the photodetector
produces an electrical sign used to make the transmittance or absorbance
calculations , shown in the digital display.
3.1 Functions
VR-2000 has 3 functions:
- Photometry:
Test mode can be switched between ABS , % T and Energy. Test
results can be stored (up to 200 groups) and print out.
- Quantitative:
Two methods are included in the menu: Coefficient Method and
Standard Curve Method. The regression equation (up to 20 groups)
and the test results (up to 200 groups) can be stored in the RAM and
printed out.
- Utility:
User can set their favourite items to keep the equipment work in the
best conditions. You can calibrate Dark Current , Calibrate Wavelengt h,
Set Light Source Switch Point and Load Default Setting.
100%T
0 Abs
Light Mono- Sample Detector Display
Source chromator Compartment