| Optical System |
Fully symmetrical double beam system |
|
All mirrors coated for long life |
| Monochromator |
Modified Czerny-Turner design using 1200L/mm
holographic diffraction grating |
| Detectors |
Two silicon diode detectors |
| Self Test and Calibration |
Automatic at switch on |
| Wavelength Range and Accuracy |
190 1100nm; 0.5nm |
| Wavelength Reproducibility |
0.1nm |
| Wavelength Readout |
Digital display on screen |
| Wavelength Selection |
By GOTO Key and keypad entry |
| Optical Bandwidth |
< 2nm, CE7400 |
|
0.5, 1, 2, 4nm, CE7500 |
| Stray Light |
Less than 0.02% at 220nm, NaI; and 0.02% at 340nm,
NaNO2 |
| Lamp Change Wavelength |
Selectable |
| Display Screen |
Large backlit LCD displays spectra, menus, data,
prompts and instrument status |
| Language - Operator Selected |
English, French, German, Italian, Spanish, Portuguese |
| Display Scrolling |
Provides viewing width of 430mm |
| Derivative Spectra |
1st to 4th derivatives |
| Autozero |
Automatic by press button |
| Photometric Readout |
Digital display of A, %T and C on screen |
| Photometric Accuracy |
±.004A at 1A |
| Photometric Noise |
Less than ±0.0001A at 550nm |
| Baseline |
Stored in safe memory |
| Baseline Flatness |
±0.001A (300nm/min, 200 1100nm), 2nm bandwidth |
| Baseline Stability |
Better than ±0.0001A/hour |
| Computer Interface |
Bi-directional RS 232 C |
| Scan Speeds |
1-4000nm/min |
| Wavelength Scale Expansions |
1-100nm/cm |
| Method Storage |
30 methods may be stored and retrieved |
| Method Protection |
Each protected by 4 digit password |
| Reaction Kinetics |
With plots, reprocessing of data as required,
for single cell or up to 6 cells |
| Overlaid Scans |
Up to 8 scans may be overlaid. |
| Cell Programming |
Up to 4, 6 or 8 cells |
| Programme Cycles |
From 1 to 9999 |
| Programme Delay (cycle time) |
From 0 seconds to 4 days (1 sec resolution) |
| Wavelength Programming |
Up to 10 wavelengths. May be combined with a
cell programme |
| Dynamic Scan Recall |
Last twenty or more scans automatically stored |
| Storage of Spectra |
100 spectra may be stored code protected |
| Concentration Curve Fitting |
Linear, quadratic or cubic with editing of standards.
30 curves stored protected |
| Formula Entry and Computation |
Complex formulae may be computed |
| Batch Sampling |
Up to 100 samples under internal control |
| Date and Time Information |
Printed from real time clock |
| Power Requirements |
110 250V, 50/60Hz, 170 watts. |
| Dimensions and Weight |
635 x 410 x 210mm; 33Kg |
