KRÜSS DR7400-P

KRÜSS DR7400-P

Digital refractometer of the KRÜSS DR7000 series for precise determination of refractive index and %Brix in liquid samples. Optical CCD sensor, Peltier temperature control (10–80 °C) and a 7-inch touch display; it works stand-alone, without an external PC. Compliant with 21 CFR Part 11 and EU Annex 11; complete audit trail.

Technical data

Measurement range

nD 1.30000–1.72000; 0–95 %Brix

Measurement accuracy

nD ±0.00002; ±0.02 %Brix

Resolution

nD 0.00001; 0.01 %Brix

Audit trail

yes

Scales

Refractive index (nD), sucrose concentration (%Brix), user-defined (unlimited)

Measurement time

approx. 2 s

Measuring prism

sapphire

Light source

LED 589 nm

Sample volume

≈ 0.3 ml

Parts in contact with the sample

sapphire, PTFE, stainless steel 1.4404

Temperature control range

10–80 °C (integrated Peltier element)

Temperature control accuracy

±0,03 °C

Temperature compensation

automatic for %Brix according to ICUMSA (selectable); customer-defined compensation possible

Temperature measurement resolution

0,01 °C

Temperature measurement accuracy

±0.1 °C

Ambient temperature

10–40 °C

Ambient humidity

10–90 % (non-condensing)

Operation

7.0″ capacitive touchscreen, 800 × 480 px; keyboard and mouse possible

Interfaces

2× USB 2.0 (tip A), 1× RS-232, 1× LAN

Housing

aluminium, powder-coated; IP20

Dimensions (W × H × D)

230 × 170 × 360 mm

Weight

5 kg

Operating voltage

90–240 V AC, 50/60 Hz

Power consumption

40 W in measurement mode; 75 W maximum