UV-VIS Detector LCD 2084.2

Programmable, 190 up to 600 nm , informative scan

Availability
This product cannot be purchased.
Manufacturer
ECOM spol. s r.o.
Part number
84000002

 UV-VIS DETECTOR LCD 2084.2

is a processor version of a LCD 2083 detector with a wavelength range of 190 - 600 nm and a noise level ± 1.25 x 10-5 AU with an empty cell and with lot of new functions:

  • adjusted wavelength and sensitivity may be changed by a programme during an analysis.
  • An informative scan may be performed during analysis in a selected portion of a spectrum.
  • Thus obtained scan can be used for determination of an optimum wavelength for particular analysis, or for a check for purity of a peak.
  • The individual programmes may be stored in a detector memory. All operations may be also performed in a manual mode.
  • The detector performs automatic wavelength calibration after lamp has been switched on, and the switching off the lamp may also be pre-programmed after completion of analysis.
  • The detector cell is replaceable from the side of the detector. A standard analytical cell, preparative cell, or microcell may be used according to the type of analysis.
  • The start can be initiated either from a keyboard or with a switch on an injection valve.


Scanning:

Wavelength range selectable in the full range of the instrument
Step interval selectable in the range 1 to 10 nm
Scan speed at 1 nm step 50 nm/s
Scan speed at 10 nm step 100 nm/s

Important notice: Output signal of the detector is directly proportional to the optical path of the cell. The noise and drift levels are referred to the optical path of 10 mm, corresponding to the AU definition.

USED CELLS

Standard analytical measuring cell HPLC 04 supplied with the unit

volume 10 µl
optical path 5 mm
diameters of capillaries input 1/ 16“ x 0,2mm ; output 1/ 16“ x 0,5 mm

MLCC 02 Microcell (optional)

volume 0,5 µl
optical path 0,8 mm
diameters of capillaries input 1/ 16“ x 0,2mm output 1/ 16“ x 0,2 mm

PLCC 04/05 Preparative cell (optional)

volume (adjustable) 45 µl; 55 µl; 70 µl
optical path (adjustable)0.3 mm; 1.4 mm; 2.4 mm
Connecting of PLCC 04 SS capilaries 1/16" x 1,1mm
Connecting of PLCC 05 FEP 1/8“ x 1/16“
 
Accuracy of adjustment ± 1 nm
Typical spectral half-width 6 nm
Reproducibility ± 0.5 nm
Light source Deuterium discharge lamp IST WL 24 198
Time constant 5s, 1s and 0,2 s
Output for integrator 5 V/AU
Communication RS232
Power supply 230 V ± 10%, 50 Hz (115 V± 10%, 60 Hz)
Power input 80 VA
Dimensions W x H x D 260 x 160 x 450 mm
Weight 12 kg
Noise level at empty cell (254 nm, TC 1 s) ± 1,25 x 10-5 AU
Drift at empty cell (254 nm after 1 h) 5 x 10-4 AU/hr
Materials in contact with mobile phase PTFE; fused silica, stainless steel, Vespel, PEEK
Programming up to 100 programmes with 11 steps
Adjustable offset ± 50 mV
Programmable parameters wavelength, sensitivity, mark in a chromatogram, sample scanning, method of programme termination and possibility to switch the lamp off at the programme end
Maximum programme duration 999 min
A/D converter integration, 19 bits
D/A converter output INT 20 bits, output REC 16 bits
Pattern frequency 10 Hz normal operation, 80 Hz scan
Output for chart recorder 10 mV