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Instrument Database:
Hitachi - Science & Technology - LaChrom Elite L-2490 RI Detector
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| Year of introduction |
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| Status |
available |
| Company |
Hitachi - Science & Technology
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| Categories |
Chromatography: LC-Detector: Refractive Index
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The difference in the refractive index between the eluant and sample is used to detect the target ingredient.
The detector is used widely for measurement of high molecular compounds and sugar.
- Shorter stabilization time
Compared to the conventional models (our products),
the stabilization time has been shortened substantially.
Measurement can be started 0.5-1 hour after the power
is turned on.
- Variable cell temperature
The cell temperature can be set within a range between
30 and 50 (in 1 increments). Detailed setting is possible
depending on the column temperature and ambient
temperature.
- Control from system manager
Chromatograms are processed by digital signals.
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| Specifications |
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| Method of Detection | Deflection |
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| Light source | Tungsten lamp |
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| Refractive index range | 1.0 to 1.75 |
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| Linearity range | 600 RIU |
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| Baseline noise | 2.5 x 10-9 RIU or less (water filled in, time constant 3.0 s) |
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| Temperature control | Off, 30 to 50 |
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| Time constants | 0.1, 0.25, 0.5, 1, 1.5, 2, 3, 6 s |
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| External outputs | Warning when measurement range is exceeded, Auto zero, Alarm, Recorder 10 mV/FS, Integrator 1 V/FS |
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| External inputs | Auto zero, Marker, Purge |
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| Baseline adjustment range | 0 to 50% /FS |
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| Auto zero | Full auto zero (optics + calculation) |
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| Recorder range | 0.25 to 512 x 10-6 RIU/FS |
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| Cell volume | 8 L |
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| Max. flow rate | 10 mL/min |
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| Max. pressure in cell | 7.1 psi (0.049 MPa) |
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| Dimensions | 13.5 in (W) x 15.75 in (D) x 6.0 in (D)
(340 mm (W) x 400 mm (D) x 150 mm (D)) |
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| Weight | Approx.29 lbs (13kg) |
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| Power requirement & consumption | 100 to 240 VAC (+/- 10%), 50/60 Hz, 150 VA or less |
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