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Digital refractometer DR7400-P with audit trail functionality

Catalog Number:
DR7400-P
Availability: In stock
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Estimated shipping date 30/04/2026, order this item in the next

Digital refractometer DR7400-P with audit trail functionality (up to 3 years manufacturer warranty)

The DR7000 series devices are digital refractometers designed for measuring refractive index, %Brix or other concentrations in liquid samples. With an optical CCD sensor, Peltiertemperature control, measurement electronics, evaluation electronics and touch display, the devices contain all the components needed to carry out measurements reliably. The Operation is located directly on the device. A separate PC with software is not necessary.

The devices and their firmware meet all requirements for FDA-regulated areas (depending on the model), as well as for the European (Ph. Eur.) and American (USP) pharmacopoeia. The DR7200-P and DR7400-P models meet the requirements of CFR 21 Part 11.

Advantages

OPERATION

  • Lightweight – Fast – User-friendly
  • Capacitive 7.0-inch touch display
  • Interactive user interface in several languages
  • Easy-to-understand, menu-guided adjustment
  • Any number of user profiles possible
  • Export as print via network/printer or to USB stick
  • Export also to several password protected network folders
  • Operation also via keyboard and/or PC mouse
  • Help and explanations “On Board” for Operation without a manual

 

MEASUREMENT

  • Almost all samples are measurable
  • Highly accurate, fast concentration measurement of liquid samples and pastes
  • Consistently high accuracy across the entire measurement range
  • Precise Peltier temperature control and a measured value preview which is updated every second
  • Automated conversion to any measurement variables/scales
  • Pre-installed scales: Refractive index, %Brix sucrose, many other scales available on request as well as customizable scales
  • Up to three scales visible at the same time
  • Single, interval or continuous measurement
  • Low sample volume from < 0.3ml
  • Easy cleaning due to flat measuring recess
  • Scratch-resistant sapphire prism

 

DESIGN

  • Advanced technology for precise measurements
  • New ventilation concept: ventilation unit is hermetically separated from optics and electronics
  • Electronics are protected from dust and other environmental influences, making the device low-maintenance
  • Intelligent waste heat control and ventilation control
  • Improved sample temperature control for even greater accuracy and measurement consistency
  • High-tech display with state-of-the-art user management
  • Option for modular replacement of the flow-through cell
  • Robust metal housing
  • Low noise during operation

 

FEATURES

  • Model diversity for adaptive use
  • Large temperature control range: 10°-80°C
  • Large measurement range: nD 1.3000-1.5800; 0-95%Brix
  • User accounts: >10000
  • Methods: >1000
  • Measured data storage > 1 000 000
  • Device volume <10 dB (temperature control range 15°C-30°C)

 

KRÜSS - ASSISTANCE SYSTEMS

  • KRÜSS – TempGate©
    The set sample temperature control is continuously monitored by the TempGate functionality. An LED ring around the sample well indicates that the DR7000 is ready to measure.
  • KRÜSS – MEASUREMENT STABILITY CHECK (MSC)
    This function can be used to check the stability of measured values during an ongoing measurement. This means that only measured values that meet the set stability criteria are saved in the results memory.
  • KRÜSS – DYNAMIC TEMPERATURE CONTROL (DTC)
    The DR7000 controls the temperature of samples fully automatically and homogeneously. With the Dynamic Temperature Control – DTC – function, the desired accuracy of temperature control can be selected. This allows the required temperature control and measurement period to be adapted to individual samples and thus reduced to a minimum.

 

DATA INTEGRITY

  • Tamper-proof measured data and export data (PDF/A)
  • Measured value preview during measured value stabilization
  • Multi-level user management
  • Extensive password settings
  • Configurable device interfaces
  • Simple integration into existing networks is possible with the DHCP client

 

Technical data Refractometer DR7000 series
Specification DR7100-P DR7200-P DR7300-P DR7400-P
         
SCALES Refractive index (nD)
Concentration of sucrose, (%Brix)
User-defined (unlimited)
MEASUREMENT RANGE nD 1.3000 – 1.5800
0-95 %Brix
nD1.3000 – 1.5800
0-95 %Brix
nD 1.30000 – 1.72000
0-95 %Brix
nD 1.30000 – 1.72000
0-95 %Brix
MEASUREMENT ACCURACY 1) nD ±0.0001
±0.1 %Brix
nD ±0.00002
±0.02 %Brix
RESOLUTION nD 0.0001
0.1 %Brix
nD 0.00001
0.01 %Brix
AUDIT TRAIL FUNCTIONALITY None Completely available None Completely available
MEASUREMENT PERIOD 3) Approx. 2 seconds
MEASUREMENT PRISM Sapphire
LIGHT SOURCE LED 589 nm
SAMPLE VOLUME/FILLING QUANTITY ≈ 0.3 ml
COMPONENTS IN CONTACT WITH THE SAMPLE Sapphire, PTFE and stainless steel 1.4404 (X2CrNiMo 17-12-2)

 

 

Temperature data
Specification DR7100-P DR7200-P DR7300-P DR7400-P
TEMPERATURE CONTROL Integrated Peltier sample temperature control system
TEMPERATURE CONTROL RANGE 2) 10-60 °C 10-80 °C
TEMPERATURE CONTROL ACCURACY ±0,1 °C ±0,1 °C ±0,03 °C ±0,03 °C
TEMPERATURE COMPENSATION Automatic temperature compensation for %Brix according to ICUMSA selectable
Optional temperature compensation can be created by the customer
TEMPERATURE MEASUREMENT With integrated temperature sensor Pt100
TEMPERATURE MEASUREMENT RANGE 10-80 °C
TEMPERATURE MEASUREMENT ACCURACY ±0,1 °C
TEMPERATURE MEASUREMENT RESOLUTION 0,1 °C 0,01 °C
AMBIENT TEMPERATURE 10-40 °C
AMBIENT HUMIDITY 10-90 % (non-condensing)

 

 

Devices basic data
OPERATION Stand-alone device (incl. firmware): 7.0 inch capacitive touchscreen, 800 x 480 pixels
ELECTRONIC INTERFACE 2x USB (2.0; type A); 1x RS-232; 1x LAN
HOUSING Aluminum, powder-coated; protection class: IP20
DIMENSIONS (W x H x D) 230 mm x 170 mm x 360 mm
WEIGHT 5 kg
OPERATING VOLTAGE 90-240 VAC
POWER CONSUMPTION 40 W in measuring mode 1) ; 75 W maximum
RATED FREQUENCY 50-60 Hz

¹) Under normal conditions for measurement refractive index (λ = 589 nm, 20 °C, 1013 hPa, 50 % relative humidity)

²) For non-condensing ambient conditions

³) After temperature equalization

More Information
Scales Refractive index (nD)

Concentration of sucrose [%Brix], User-defined

Measurement range nD 1.3000–1.7200 0–95 %Brix
Resolution nD 0.00001 0.01 %Brix
Measurement accuracy nD ±0.00002 ±0.02%Brix
MEASUREMENT PERIOD approx. 2 seconds
MEASUREMENT PRISM Sapphire
Light Source LED
Wavelength 589 nm
Temperature Control With integrated Peltier temperature control
Temp. Control range 10-80 °C
Temperature compensation Automatic temperature compensation for %Brix according to ICUMSA selectable

Optional temperature compensation can be created by the customer

Temperature measurement With integrated temperature sensor Pt100
Temperature Measurement Range 10 to 80 °C
Temperature measurement accuracy ±0.1 °C
Temperature measurement resolution 0.01 °C
Housing Aluminum, powder-coated; protection class: IP20
Interface 2x USB (2.0; type A); 1x RS-232; 1x LAN
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