A.KRÜSS Digital Refractometer DR7400
Measuring range: nD 1.30000-1.72000; 0-95% Brix
Tempering range: 10-80 °C
Compliant with CFR 21 Part 11
The DR7000 series devices are digital refractometers designed for the measurement of refractive index, %Brix or other concentrations in liquid samples.
With an optical CCD sensor, Peltier temperature control, measurement electronics, evaluation electronics and touch display, the devices contain all the components required to carry out reliable measurements.
They are operated directly on the device. A separate PC with software is not required.
The devices and their firmware fulfil all requirements for FDA-regulated areas (depending on the model), as well as for the European (Ph. Eur.) and American (USP) pharmacopoeia.
DR7400-P also fulfils the requirements of CFR 21 Part 11.
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 printout via network/printer or to USB stick
- Export also to any number of password-protected network folders (PDF; A-format or CSV format)
- Operation also via keyboard and/or PC mouse
- Help and explanations ''on board'' for operation without manual
MEASUREMENT
- Almost all samples can be measured
- Highly accurate, fast concentration measurement of liquid samples and pastes
- Consistently high accuracy over the entire measuring range
- Precise Peltier temperature control and measured value preview updated every second
- Automated conversion to any measured variables/scales
- Pre-installed scales: Refractive index, %Brix sucrose, many other scales available on request as well as individually adjustable scales
- Up to three scales visible simultaneously
- Single, interval or continuous measurement
- Small sample volume of < 0.3 ml
- Easy cleaning due to flat measuring well
- Scratch-resistant sapphire prism
DESIGN
- Advanced technology for precise measurements
- New ventilation concept: ventilation unit is hermetically separated from the 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 exchange of the flow cell
- Robust metal housing
- Low-noise operation
FEATURES
- Variety of models for adaptive use
- Large temperature control range: 10-80 °C
- Large measuring range: 1.3000-1.72000nD
- User accounts: >10000
- Methods: >1000
- Measured value memory > 1 000 000
- Device volume <10 dB (temperature control range 15-30 °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 fulfil the set stability criteria are stored in the results memory.
KRÜSS - DYNAMIC TEMPERATURE CONTROL (DTC): The DR7000 temperature controls samples fully automatically and homogeneously.
The desired temperature control accuracy can be selected using the Dynamic Temperature Control (DTC) function.
This allows the required temperature control and measuring time to be adapted to individual samples and thus reduced to a minimum.
CONFORMITY WITH STANDARDS & DIRECTIVES
- CFR 21 Part 11
- Pharmacopoeias (EU / USP / JP / BP)
- ASTM / DIM / ICUMSA / NIST / OIML
- GAMP / GMP
DATA INTEGRITY
- Firmware, data recording and storage are compliant with 21 CFR Part 11 & EU GMP Annex 11
- Secured audit trail (remains intact for the lifetime of the measuring device)
- Tamper-proof measurement data and export data (PDF/A)
- Measured value preview during measured value stabilisation
- Multi-level user administration
- Extensive password settings
- Configurable device interfaces
- Simple integration into existing networks is possible with the DHCP client
