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Instrument Database:
Hitachi - Science & Technology - L-7400 UV 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/HPLC
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| Specifications |
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- Optics: Double beam system
- Light source: Deuterium lamp
- Wavelength range: 190 - 600 nm
- Accuracy of WL setting: ± 1 nm
- Optical band width: 10 nm
- Detector Range: max. approx. 2.5 AU
- Time contstants: 0.1, 0.5, 2.0, 4.0, 8.0 second
- Noise: < 0.8 x 10-5 AU (250nm, air in cell)
- Drift: < 2 x 10-4 AU/h (250nm, air in cell)
- Auto-Zero range: - 0.3 to 2 AU
- Offset: 0 to 2 AU
- Time-programmable: Wavelength, auto zero, hold for baseline
- Digital output: - 4 x 101 to 1.1 x 106 counts, 106 counts correspond to 1 , 2 or 4 AU (selected Range)
- Analog output (Processor): 1 V correspond to 1 , 2 or 4 AU (selected Range)
- Analog output (Recorder): 10 mV correspond to 0.001 - 2.5 AU (selected Range)
- Working parameters: Time constants, recorder range, offset
- Digital comunication: D-Line
- Inputs: Marker in, spectrum start in, lamp off in, autozeroin
- Diagnostics functions: Lamp energy, lamp light-on time, lamp switching, wavelength accuracy
- Standard flow cell: straight cell, 10 mm optical lenght, 17 µL volume, 10 bar withstand pressure
- Optional flow cells: Semi-micro (5 mm, 3.2 µL, 10 bar) preparative flow cell (0.5 mm, 3.5 µL, 10 bar)
- Ambient temperature: 4 to 35 °C
- Ambient humidity: 45 to 80 %
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