Refractive Index Detector: Shodex RI-201
The RI-210 is a highly sensitive RI detector incorporating a three-chamber flow cell.
(Features)
· A nobel optical system (three-chamber flow cwll) provides at least twice the sensitivity of our previous detectors.
· The double temperaturefluctuations.
· The limit of detection for saccharides is approximately 2 ng.
Prenciple of New optical system measurement
in our previous optical system, the measurement light through the flow cell was refracted onlr once. the new three-chamber flow cell allows the light to be refracted wice, thereby inceasing sensitivity at least tow-times at the same optical path length. this doubles the defection degree and results in not only reduces the noise half, but reduces the drift caused by optical systems half.
(Application)
(Specifications)
| Product code | ||
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| Model |
RI-201
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Analysis
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| Flow cell type |
3 chamber-type
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| Measuring method |
Deflection type
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Refractive Index range
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1.00 to 1.75
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| Measuring range |
0.125 to 256 micro-RIU
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| Drift |
0.1micro-RIU/h (Pure water 1mL/min, PURGE OFF)
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Linearity range
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≥300micro-RIU
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| Noise |
≤1nRIU (Pure water, response : 1.5sec)
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| Response |
0.1 , 0.25 , 0.5 , 1 , 1.5 , 2 , 3 , 6 sec
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| Auto zero |
Full auto zero
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| Auto zero range |
All range
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| Off-set range |
5micro-RIU
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| Off-set response |
25nRIU
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| Integrator output (Sensitivity) |
DC 0 to 1V
(4mV/micro-RIU, 16mV/micro-RIU) |
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| Cell volume |
8micro-L
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| Flow rate | (Usual) |
0.2 to 3.0mL/min
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| (Max.) |
10mL/min (solvent : pure water)
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| Max. back pressure |
50kPa
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| Internal volume |
IN to Cell: ca. 80micro-L
Cell to OUT: ca. 600micro-L All(Cell to OUT: ca.690micro-L |
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| Recorder output |
0 to 10mV/FS
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| External input |
–
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| External output |
(1) READY (temperature control)
(2) LEAK (3) ERROR (ROM, RAM, PARAMETER, HOME POSITION, OVER-HEAT, OPTI.-BALANCE, INTENSITY) |
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| Temperature control |
OFF, 30 to 50deg-C (1deg-C step)
77deg-C Temp. fuse (Double Temperature control) |
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| Communication port |
USB
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| Operational support functions |
None
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| Wetted materials |
Stainless steel 316, Teflon, Quartz glass
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| Power source, Power consumption |
AC 100 to 240V±10%, 50/60Hz, 150VA max.
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| Demensions, Weight |
W260 x D400 x H150 (mm), ca.12kg
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| Accessories |
Power cable, single code, connector tube, fuse, operation manual
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