

Determination of refractive index in the range of nD 1.3200-1.5600 and 0-95 %Brix
Measurement intervals approx. 10 seconds
Automatic temperature compensation (%Brix and freely definable for customer-specific products
Integrated sensor for temperature monitoring
User-defined scale
Stainless steel measurement chamber that meets all the requirements of the food and pharmaceutical industry, CIP capable
Features
The bypass process refractometer PRB21S are installed in tanks or boilers using tube connections for the continuous monitoring and control of the concentration of liquids. The sample flows via the bypass into the measurement chamber made of stainless steel. The measurement prism consists of scratch-resistant sapphire and is resistant against solvents and acids.
- Determination of refractive index in the range of nD 1.3200-1.5600 and 0-95 %Brix
- Measurement intervals approx. 10 seconds
- Automatic temperature compensation (%Brix and freely definable for customer-specific products
- Integrated sensor for temperature monitoring
- User-defined scale
- Stainless steel measurement chamber that meets all the requirements of the food and pharmaceutical industry, CIP capable
- Sample prism, made of scratch-proof and chemicalresistant sapphire
- Cleaning manually or via customer process cleaning
- Suitable for process temperatures up to 60 °C
- Two interfaces (RS-232, analogue 0/4-20 mA)
- A display for the visual monitoring is also available
| MEASUREMENT DATA | |
| SCALES | Refractive index (nD) Concentration of sucrose [%Brix], User-defined |
| MEASUREMENT RANGE | nD 1.3200–1.5600 0–95 %Brix |
| MEASUREMENT ACCURACY | nD ±0.0002 ±0.2 %Brix |
| RESOLUTION | nD 0.0001 0.1 %Brix |
| MOUNTING | Bypass |
| MEASUREMENT PERIOD | approx. 10 s |
| MEASUREMENT PRISM | Sapphire |
| LIGHT SOURCE | LED |
| WAVELENGTH | 589 nm |
| TEMPERATURE DATA | |
| TEMPERATURE COMPENSATION | ICUMSA or freely definable |
| TEMPERATURE MEASUREMENT | With integrated temperature sensor Pt100 |
| TEMPERATURE MEASUREMENT RANGE | -200–120 °C |
| TEMP. MEASUREMENT ACCURACY | ±0.2 °C |
| TEMP. MEASUREMENT RESOLUTION | 0.1 °C |
| PROCESS TEMPERATURE | 10–60 °C |
| AMBIENT TEMPERATURE | 0–40 °C |
| AMBIENT HUMIDITY | 10-90 % (non-condensing) |
| FURTHER SPECIFICATIONS | |
| PERMISSIBLE PRESSURE LOAD | < 2 bar (relative) |
| IP CODE | IP65 |
| POWER CONSUMPTION (MEASUREMENT OPERATION) | 5 W without display, 6 W with display |
| DIMENSIONS (W X H X D) | 180 mm x 190 mm x 180 mm |

