Refractive Index Detector (RI)
The RI-Detector RefractoFlow 2030 Differential Refractive Index Detector series offers the sensitivity, stability and reproducibility required for optimal RI detection. The thermal isolated optic with a countercurrent heat exchanger and with its programmable temperature control results in an extremely stable baseline and an optimal Signal/Noise ratio. The RF 2030 series provide autopurge and autozero capabilities, as well as RS232 and LAN communication to acquire data directly without using any external signal interface. The detector can be programmed, controlled and used manually by keypad or together with the software
Clarity® or ChromStar®.
TECHNICAL SPECIFICATIONS
Analytical specificationsEluent volumesData communicationGeneral
| Measuring range refractive Index |
1.00 – 1.75 RIU |
| Measuring range |
± 1000 μRIU |
| Zero compensation optics |
Full measuring range via adjustment screw |
| Zero compensation measuring signal |
Full measuring range via AutoZero function |
| Drift |
1 μRIU/hour (1 mV/hour) * |
| Noise |
± 7 μRIU (± 7 μV)* (analog) |
| |
± 3 μRIU (± 3 μV)* (digital) |
| Analog outputs |
Integrator (not configurable) |
| |
Recorder (configurable) |
| Integrator output |
± 1200 mV |
| Recorder output |
10 mV, 100 mV, 1000 mV or EXTN (+/- 1200 mV) |
| Recorder range |
Selectable from 128, /64, /32, /16, /8, /4, /2/, 1 *2, *4, *8, *16, *32, *64, *128 |
| Recorder offset |
Selectable in the range of -50, -10, -5, -1, 0, +1, +5, +10, +50 [%] related to selected recorder scope |
| Recorder marker |
Marker function ON/OFF |
| Temperature control optics |
35 – 55 °C (1 °C steps) |
| Thermal fuse |
72 °C |
| Self-heating |
approx. 7 °C above ambient temperature |
| Flow cell (analytical) |
45° – Flow cell with two chambers |
| Volume |
9 μL / chamber |
| Pressure max. |
6 bar (0.6 MPa) |
| Flow rate |
0.1 – 3.0 mL / min |
| Purge valve |
3 or 2 directional valve (12 volt) |
| max. valve pressure |
2 bar (0.2 MPa) |
| Material and wetted parts |
Stainless steel 316, Teflon and quartz glass |
| max. pH range |
2.3 – 9.5 |
| |
|
| * 1 mV according 1 μRIU in case that calibration was performed with calibration solution 500 μRIU. |
| Inlet –> Cell |
22 μL |
| Inlet –> Cell –> Outlet |
approx. 600 μL |
| Total |
approx. 1.300 μL |
| Digital interface |
RS232, bidirectional |
| Digital input |
TTL Purge, AutoZero, Start/Marker |
| Digital output |
TTL Intensity alarm |
| Physical specifications |
table |
| Power supply |
100 – 120 V or 220 – 240 V; AC; 50 – 60 Hz |
| Power input |
max. 50 W |
| Dimensions (w x h x d) |
280 x 135 x 498 mm |
| Weight |
12 kg |
| Operating temperature |
10 – 35 °C |
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The RI-Detector RefractoFlow 2030 Differential Refractive Index Detector series offers the sensitivity, stability and reproducibility required for optimal RI detection. The thermal isolated optic with a countercurrent heat exchanger and with its programmable temperature control results in an extremely stable baseline and an optimal Signal/Noise ratio. The RF 2030 series provide autopurge and autozero capabilities, as well as RS232 and LAN communication to acquire data directly without using any external signal interface. The detector can be programmed, controlled and used manually by keypad or together with the software Clarity® or ChromStar®.