KRÜSS PRB21S
Bypass process refractometer, nD 1.3200–1.5600 and 0–95 %Brix

KRÜSS PRB21S
Real-time measurement in a tank or boiler through a bypass with a flow cell. For monitoring concentration in processes; CIP capable up to 120 °C, IP65 protection.
Technical data
- 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
- Measurement time
- approx. 10 s
- Wavelength
- 589 nm
- Process pressure (relative)
- 0–2 bar
- Process temperature
- 10–60 °C
- Ambient temperature
- 0–40 °C
- Ambient humidity
- 10–90 % (non-condensing)
- Temperature measurement accuracy
- ±0.2 °C
- Scales
- Refractive index (nD), sucrose concentration (%Brix), user-defined
- Adjustment
- via PC/laptop
- Parts in contact with the sample
- sapphire, PTFE, FKM, stainless steel 1.4305
- Mounting
- Bypass with flow cell
- Additional features
- temperature compensation (ICUMSA or freely definable); IP65 (connections IP67); CIP capable up to 120 °C
- Interfaces
- 1× RS-232, 1× RS-232 for display, 2× analog 0(4)–20 mA, 1× relay input, 2× relay output
- Dimensions (W × H × D)
- 220 × 110 × 220 mm
- Weight
- 3 kg
- Operating voltage
- 24 V DC (18–30 V DC)
- Power consumption
- 5 W (without display); 6 W (with display)
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