Fast, reliable measurements using the oscillating U-tube method
In close cooperation with industry and science, we have developed digital density meters with U-tube oscillators that best meet the requirements in terms of accuracy, speed, required sample volume and ease of integration into the manufacturing process. They have stood the test for many years in numerous companies and different sectors for quality control in the laboratory as well as at the production line.
Our DS7000 density meters are available in two versions – DS7700 and DS7800. Their only difference lies in the measuring accuracy and the type of drying unit; all other characteristics are identical. The devices are very robust, compact and yet precise and suitable for nearly all liquids, emulsions, pastes etc. thanks to the chemical-resistant parts made of borosilicate glass and PTFE that are in contact with the sample.
They feature a self-explanatory, well-arranged user interface, which makes it easy even for non-expert personnel to operate the device. A state-of-the-art TFT display ensures a clear, bright representation of all the information. The integrated touch-screen tops off the comfortable user experience.
Overview of our density meters
|ACCURACY||±0.001 g/cm³||±0.0001 g/cm³|
|MEASUREMENT RANGE||0–3 g/cm³||0–3 g/cm³|
|TEMPERATURE RANGE||10–40 °C||10–40 °C|
|SAMPLE SUPPLY VIA||Syringe|
|DRYING UNIT DS7050||Included|
|DRYING UNIT DS7060||Included|
|PERISTALTIC PUMP DS7070||Optional||Optional|
|AUTOSAMPLER AS80||Can be retrofitted|
(requires drying unit DS7060)
|AUTOSAMPLER AS90||Can be retrofitted|
(requires drying unit DS7060)
|EASY OPERATION, FAST MEASUREMENTS, HIGH SAFETY STANDARD|
|Our density meters offer many advantages:
Maximum efficiency through automation
Fully automatic solutions
Working environments involving a high sample throughput require flexible, powerful and robust solutions for a fully automatic execution of the entire process from the sample supply to the cleaning and drying. Our AS80 and AS90 autosamplers meet these high requirements. Together with the peristaltic pump DS7070, they allow for an unsupervised measurement of up to 89 samples.
You can create any number of individual measurement methods and cleaning procedures as well as sampler templates on the density meter’s user interface. The AS80 and AS90 models require very little space, are easy and fast to install and very durable.
The samples on the Autosampler’s rotating plate are removed successively by the suction needle and drawn into the U-tube oscillator by the peristaltic pump. If desired, the system can be automatically rinsed and dried after each measurement.
The semi-automatic sample supply and cleaning of the U-tube oscillator with the peristaltic pump DS7070 – for low-viscous to slightly viscous samples – means improved efficiency and improved safety in case of aggressive or harmful substances. It also improves the reproducibility of the measurement results and saves costs as the peristaltic pump no longer requires a re-supply of syringes.
The drying unit DS7060 can make the drying fully automatic: It is connected to the peristaltic pump and the flow of the sample or cleaning medium as well as the drying air is controlled via its 3/2-way valve. The drying unit DS7050, which is fitted with a 2/2-way valve, is suitable for cleaning procedures via displacement without a subsequent drying.
If work is performed manually, the sample and the medium for cleaning the U-tube oscillator will be supplied with a Luer syringe. While the sample is added, you can check for air bubbles by looking through the inspection glass. A suitable medium is injected for the cleaning until all sample residues have been dissolved and removed. The drying unit will then remove all liquid residues.
Our extensive range of services
Your benefits as an A.KRÜSS customer:
- IQ/OQ/PQ by A.KRÜSS Optronic or certified service partners
- Service, maintenance, calibration and adjustment on site
- Calibration and adjustment with certified calibration liquids
- Training and application consulting on site
- Spare parts and accessories directly from the manufacturer
- Customer-specific customisation of devices
- Efficient support thanks to a fast confirmability of the customer’s situation based on extensive reports
For prices and availability information on A.KRÜSS density meters, please contact your nearest Krüss distributor, who will be delighted to help.
For full technical specifications, please download the brochure here.
KRÜSS density meters in the laboratory
KRÜSS density meters – News and Blog
- Density meter DS7800 with new sample connections
- Peristaltic pump DS7070 completes density meter
- Why the drying unit of the density meter should consist of polycarbonate instead of plexiglas