©2007 DN Traders Karachi , Pakistan
Introduction :
HP Series
With constant measuring pressure
To measure the winding density (hardness) of textile bobbins, beams, spools, cones, dye packages etc.
Special features:
- 6different models with different ball sizes and working faces are available
- Constant pressure system eliminates false reading due to difference between operators
- Ball shaped iridentor prevents damage to bobbins
- Working face slightly curved to fit on small bobbins
- Special Hat bottom versions lor bobbins with diameters over 400mm, such as warp beams
- Also available with optional accessory memory pointer (CodeM)
The principle used to measure textile hardness is dosed on measuring the resistance force of the penetration of a bail against the spool under o known spring load. The measuring principle is the same as for the Shore A hardness test.
HPS Series
According DIN535Q5,1507619,ISO868, ASTM 02240 With constant measuring pressure
For determing the surface hardness of soft rubbers elastomers, natural rubber products etc.
Special features:
- Easy to use
- Constant pressure indicating system assures uniform test pressure eliminating false reading due to differences between operators
- High repeatability
- Flat big working base prevent tilting and improve the measuring accuracy
- Adjustuble Min. Max. indicator marks
For measuring the hardness, the spring-loaded outer ring of the housing is pressed downwards until the edge of the ring meets the red marking on the housing. This ensures a constant pressure and
prevents measuring errors.
