Operating Principle; Functions - Selecta VR 2000 Manual De Instrucciones

MANUAL DE INSTRUCCIONES CODIGO 80247 REV 0 MANUAL DE INSTRUCCIONES CODIGO 80247 REV A
J
.P. SELECTA s.a.
J
.P. SELECTA s.a.
Marzo/2011

3 OPERATING PRINCIPLE

3 OPERATING PRINCIPLE
VR-2000 equipment is composed of five parts:
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.
eliminate unwanted second order radiations.
•
•
A compartment for sample cuvettes.
•
•
A photodetector to receive light transmittance and to convert it to electrical
sign.
electrical sign.
•
•
A digital display where absorbance, tramittance and concentration values are
shown.
values are shown.
Light Mono-
Source chromator
The halogen lamp light, focus on the monochromator entrance where a collimated
The halogen lamp light, focus on the monochromator entrance where a
mirror points the light beam towards the diffraction grating.
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
The diffraction grating diffuses the light beam to produce an spectrum. A
centers in the monochromator output slot by means of another collimated mirror.
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.
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
This light beam goes through the sample, and then the photodetector
the digital display.
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:
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.
Autovía A2 Km 585.1 Abrera 08630 (Barcelona) España
Ctra. NII Km 585.1 Abrera 08630 (Barcelona) España
e-mail: [email protected] - website: http://www.jpselecta.es
e-mail: [email protected] - website: http://www.jpselecta.es
Marzo/10 (Sujetas a modificaciones sin previo aviso) Pag.: 22 (Sujetas a modificaciones sin previo aviso) Pag.: 21
An halogen lamp to supply the light.
A monochromator to isolate the wavelength of interest and to
A compartment for sample cuvettes.
A photodetector to receive light transmittance and to convert it to
A digital display where absorbance, tramittance and concentration
Sample
Compartment
- 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.
100%T
0 Abs
Dete ctor Display
Tel 34 93 770 08 77 Fax 34 93 770 23 62
Tel 34 93 770 08 77 Fax 34 93 770 23 62