Leírás és Paraméterek
Flash 10 DAD 400 is an UV diode array detector (PDA,DAD), which allows measuring absorbance of four wavelengths simultaneously in one cell just as measuring of whole spectrum (scan). More wavelengths are used in liquid chromatography to verify purity of analyzed samples or in situations when some peaks absorb on different wavelengths. It is possible to use the detector in flash and preparative applications.
It is possible to control the detector manually by keyboard and display but also by RS232. At the back panel are available four analog outputs.
The unit’s DAD (diode array detector) design offers many advantages:
- absorbance measuring on four wavelengths simultaneously
- wavelength setting from 200 up to 400 nm in increments of 1nm
- on-line scan of whole spectrum
- lamp work hours are counted using the built-in counter
- the cell is easy to replace from the side of the detector
- powering by 90–264 V
- unit is controlled by RS232 and keyboard
- signals are available in analog and digital form
- easy service and diagnostic using display and keyboard
- adaptation for external cell connection available
Technical parameters:
| Wavelength range | 200 - 400 nm (256 elements on CCD) |
| Typical spectral half-width | 8 nm |
| Accuracy of adjustment | ± 1 nm |
| Reproducibility | ± 0.5 nm |
| Light source | Deuterium discharge lamp |
| Noise level at test cell (254 nm, TC 0.75 s) | ± 5 x 10-5 AU |
| Drift at test cell (254 nm after 1 hr) | 1 x 10-3 AU/hr |
| Materials in contact with mobile phase | PTFE; fused silica, stainless steel |
| Time constant (T90) | 0.5 s; 0.75 s; 1 s or 2 s (T63 0.3s;0.4s;0.6s;1s) |
| Digital output for integrator | 1 V/AU |
| Four 1V analog outputs for integrator with sensitivity switching | 5; 3; 2; 1; 0.5; 0.25; 0.1; 0.05 AU/V |
| Interface | RS 232 |
| Power supply | 90–264 V |
| Power input | 100 VA |
| Dimensions (W x H x D) | 135 x 170 x 418 mm |
| Weight | 6.0 kg |
Preparative cell PLCC 15 (delivered with unit):
| volume/optical path(adjustable) | 45 µl / 0.3 mm (basic) 55 µl / 1.4 mm 70 µl / 2.4 mm |
| connecting | tubing with OD = 1/8", thread 1/4"-28 |
| maximal flow rate | 500 ml/min. (3000 ml/min. with PLCC 3L) |
