PPS- Parker Print Surface Roughness Tester

Applicable standards:
ISO 8791-4
ISO 891-1
TAPPI T 555
BS 6563

Features
• 3 versions available:
– 1 head, test direction: bottom-up (standard)
– Reverse test direction (top-down)
– 2 heads: simultaneous test from top and bottom
• 3 contact pressures selectable: 490, 980, and 1,960 kPa

Description
The sturdy and stable device is equipped with industrial PC and touchscreen and is available in three versions: 1 head (top), 1 head (bottom), or 2 heads (top and bottom). The large display indicates single values and statistics.

Test description
The operator places a sample below the measuring head. The measuring head lowers onto the sample after pushing the start button. The bottom platen with backing substrate is lifted and pressed against the measuring head with the preset pressure. Controlled measuring air is admitted to the measuring head and passes from one annular groove, between the sample and the measuring land to the other annular groove. The test takes approx. 3-10 seconds. The measured value (roughness depth) is displayed in μm after the performed test. Furthermore, the compressibility can be measured.

Specifications
• Selectable contact pressures:
– 490 kPa (only for compressibility tests)
– 980 kPa
– 1,960 kPa
• Measuring range: 0.5-8 μm
• Display of results: roughness (=roughness depth) in μm
• Measuring accuracy:
– Pressure differential: ± 0.005 kPa linear
– Flow: ± 0.5 % of the final value
– Accuracy of test duration: ± 0.5 s
• Repeatability: ± 0.2 μm
• Reproducibility: ± 0.4 μm
• Measuring direction (depending on version):
– Bottom-up
– Top-down
– Top and bottom
• Touchscreen for easy handling
• Parallel printer interface
• Serial data interface (RS 232)
• Compatible to PaperLIMS and MiniStat
• Compatible to PTA-Line

Technical data
Electricity: 110–230 V, 50–60 Hz
Water supply: None
Compressed air: 600 kPa
Dimensions (WxDxH): 27x68x60 cm
Net weight:
– 1-head 32 kg
– 2-head 41 kg
Gross weight:
– 1-head 47 kg
– 2-head 56 kg