A.KRÜSS Optronic Brochure Refractometer
A.KRÜSS Optronic Brochure Refractometer, English PDF document.
View resource →Product overview
The AR2008 places the sample between measuring and illumination prisms and displays refractive index or Brix together with temperature. Measured value, temperature, date and time can be transmitted to a printer, network or PC through the serial interfaces.
Advantages
Sample suitability and readout
- Measures liquids and viscous samples, as well as films and solids with at least one smooth surface.
- The sample is placed between measuring and illumination prisms; adjust the bright/dark boundary with the drive knob and read the value and temperature digitally.
- SF4 optical flint-glass prism; sturdy construction and accessible sample area for cleaning.
Temperature measurement and external control
- An integrated digital thermometer displays temperature directly.
- Hose connections accept a separately purchased PT31 circulation thermostat; external control is not built-in temperature control.
- Selectable automatic %Brix temperature compensation according to ICUMSA.
Result output and records
- RS-232 and RS-422 serial interfaces for PC or printer connections.
- Measured values, temperature, date and time can be transmitted for quality-control records.
Technical data
| Item | Specification |
|---|---|
| Measurement range | nD 1.3000–1.7200; 0–95 %Brix |
| Measurement accuracy | nD ±0.0002; ±0.1 %Brix |
| Resolution | nD 0.0001; 0.1 %Brix |
| Wavelength | 589 nm |
| Temperature-measurement accuracy | ±0.3 °C |
| Temperature-measurement resolution | 0.1 °C |
| Temperature control | Retrofittable with a PT31 circulation thermostat |
| Scales | Refractive index nD and sucrose concentration %Brix |
| Adjustment | By adjustment screw |
| Parts in contact with the sample | Optical flint glass SF4 |
| Temperature compensation | Optional ICUMSA temperature compensation for %Brix |
| Operation | Drive knob and selection keys |
| Interfaces | 1 × RS-232 and 1 × RS-422 |
| Dimensions (W × H × D) | 120 × 290 × 250 mm |
| Weight | 5 kg |
| Operating voltage | 115/230 V, switchable |
| Maximum power consumption | 40 W |
Measurement accuracy is specified at λ = 589 nm, 20 °C, 1013 hPa and 50% relative humidity; temperature control requires a PT31 circulation thermostat.
Cleaning and maintenance
Clean the prism promptly after measurement to prevent dried or hardened residue. Remove the sample with a soft, lint-free cloth, then wipe with a slightly damp cloth. After markedly different samples, check cleaning with water or an appropriate reference.
Application areas
For refractive-index, Brix, identity, purity and concentration measurement in chemical, petrochemical, oil and grease, food, pharmaceutical, research and education settings.
Calibration standard and contact liquid
The AR-series nD 1.5167 calibration standard and 5 ml cinnamon oil used as contact liquid must be purchased separately according to calibration requirements.
Related accessories and consumables
- PT31 circulation thermostat, 8–35 °C.
- AR2008 illumination LED and cable, and temperature sensor with cable.
- CBM910 matrix printer, AR2008 printer interface cable, paper rolls and ink ribbon.
Service support
- Experienced specialists provide product selection, application and operation support.
- Calibration, maintenance and maintenance contracts can be discussed as required.
Selection guidance
AR2008 suits Abbe measurements requiring digital scale display, date/time records and serial data output. Selection should consider sample transparency, interface requirements, external temperature control and printing.