SCHMIDT, Yarn Package Hardness Tester, HP Series, Yarn Package Hardness Tester HP-5,เครื่องทดสอบความแข็งของเส้นด้าย,

Yarn Package Hardness Tester HP-5

Textile hardness tester (durometer) to determine winding density of loosely wound bobbins of synthetic fibers and closely wound natural fibers, yarns and threads

Indentor - ball diameter 5 mm

The measuring force is according to shore A regulations

Durometer with curved working face for bobbins with diameter up to 400 mm.

Special Features

The spring loaded outer ring assures a constant measuring pressure and eliminates false readings due to difference between operators

Ball shaped indentor prevents damage to bobbins

Working face slightly curved to fit on small bobbins, working face radius 55 mm

Adjustable Min./Max. indicator marks to highlight working range of the yarn package hardness tester HP-5

For bobbins with diameters over 400 mm use yarn package hardness tester HP-5-F with flat working face e.g. warping beams

Optionally available: Calibration certificate with calibration report

Standard Features

High repeatability

Easy to use

Display range 0 – 100 hardness graduation marks

Certificate of Compliance with the order 2.1 according EN 10204 is included.

Available Models

Specifications

Specifications subject to change without notice!

* Meets requirements of Shore A
** Spring load of outer ring to create constant pressure when outer ring is pulled to red marking

General:
The principle used to measure textile hardness is based on measuring the resistance force of the penetration of a ball shaped indentor against the spool under a known spring load. The hardness scale covers a range of 0 – 100, were 0 is the smallest and 100 is biggest hardness. The measuring force and the principle relates to the specifications of rubber hardness tester Shore A.

Please note:
There exists no international standard for adjusting and calibration of textile hardness. Therefore we have developed our own test-standard and procedures.