For measuring the hardness, the spring-loaded outer ring of the housing is pressed downwards until the edge of the ring meets the colored marking on the housing. This ensures a constant pressure and prevents measuring errors.
The principle used to measure shore hardness is based on measuring the resistance force of the penetration of a pin into the test material under a known spring load. The amount of penetration is converted to hardness reading on a scale with 100 shore units.
As the depth of indentation is max. 2.5 mm the test material has to have a minimum thickness of 6 mm. If thickness is less stack some samples til you reach the required thickness.
The HP series durometer is supplied as a complete kit with:
A calibration certificate is optional.
|Indentor||Ball, 5 mm diameter (R=2.5mm)|
|Depth of indentation||0 - 2.5 mm|
|Typical applications||Foams, steering wheels and inner linings of motor vehicles|
|Accuracy||± 1 hardness unit|
|Application range||< 20 Shore A|
|Measuring spring force||0.55 - 8.065 N|
|Test pressure*||Approx. 12.5 N|
|Scale diameter||54 mm|
|Display range||0 - 100 Shore AO units|
|Working face||44.5 mm Ø = 15.5 cm²|
|Base plate||44.5 mm Ø|
|Weight, net (gross)||Approx. 300 g (500 g)|
|Dimensions||50 x 60 x 110 mm (LxWxH)|