All ERWEKA Tablet Hardness Testers are easy to adjust by a two-point adjustment routine.

In addition all ERWEKA hardness testers support a linearity check of up to 10 points within the complete measurement range. Unlike other brands of Tablet-Hardness-Testers, ERWEKA allows to select the second point of adjustment free of choice.

Calibration is password protected to assure that only authorised staff adjusts the equipment.

A calibration protocol can be hard-copied when a suitable printer is connected to the units parallel printer port.



›› Static Calibration

As standard all ERWEKA Hardness Testers can be calibrated with the use of weights.

After the two-point adjustment (second value can be chosen), the linearity of the measuring range can be documented by the standard linearity check (up to 10 points, free of choice).

This means that three different weights can be placed to the calibration platform,
actual and nominal results of the linearity check will be displayed and hard-copied
together with the calibration protocol.



›› Dynamic Calibration


The tool is inserted and connected and the unit will adjust itself. After adjustment the unit will fulfil a linearity check on up to 50 values within the measuring range.

Results of calibration can be shown in the format of a graph, printed or stored using a PC and the AutoCal software.

Optional ERWEKA Hardness Testers can be calibrated dynamic by the AutoCal calibration tool. This tool kit comprising of a certified electronic load cell and an intelligent interface box makes calibration more accurate and even faster!