The manual tablet breaking force and dimension determination instruments of the German company Kramer Elektronik GmbH belong to the H-series instrument family. The number in the name of the instruments refers to the measurable parameters, thus the H2 is suitable for the breaking force and diameter (le
ngth) measurement. The H3 measures three parameters, such as the breaking strength, the diameter/length and the width. The H4 can also be used for thickness measurement, and the H5 can also collect weight values by receiving the signal of a compatible external scale. The H4+ and H5+ use an external thickness gauge for thickness measurement. All H instruments operate manually, and the user is responsible for moving the tablets between the measuring stations and placing them in the correct position in the load cell. The load cell is able to crush the tablets at a constant speed or by applying constant force and thereby is able to determine the breaking force value. The speed is freely adjustable between 0.1 – 8 mm/sec, and the force is freely adjustable between 1 – 100 N/sec.
The H-series instruments are controlled by a 7’’ touch screen. The measurement parameters, the tolerance and acceptance ranges can be recorded per product, and a large internal memory allows the storage of data for approx. 10,000 products. The measured values can also be displayed graphically, histograms and breaking force (N) – displace
ment (mm) or breaking strength (N) – time (sec) graphs can also be displayed. The methods and results are stored in a database, which can be saved and restored as well. The instruments have both USB and network connectors. The results can be saved onto a portable data storage device, but it is also possible to attach a network drive. In the latter case, the results can also be saved into a designated network directory in CSV or XML format, thus making them readable to LIMS systems (optional).
Each H instrument has an easily removable collector and an easy-to-clean surface, and an LED row running around the entire surface provides feedback on the operation. The load cell of the instruments can be calibrated with calibrated weights or with a dynamic manual calibration unit in the entire measuring range.
Specifications:
- control: 7’’ touch screen
- connectors: 2 x USB 2.0 / 1 x RJ45 LAN / 1 x RS-232
- printing: network or USB printer with PCL6 compatibility
- dimensions: 270 x 320 x 100 mm, approx. 7 kg (depending on configuration)
breaking force (hardness):
- measurement mode: constant speed (0.1 – 8 mm/sec) or constant force (1 – 100 N/sec)
- measurement range: 4 – 400 N
- accuracy: ±1 N
- resolution: 1 N
- unit of measurement: N, Kp, Sc
diameter / length / width / thickness:
- measurement range: 3 – 55 mm
- accuracy: ±0.05 mm
- resolution: 0.01 mm
- unit of measurement: mm, inch
the specifications for weight and external thickness measurement depend on the used thickness gauge and analytical scale
