Wira

The new generation WIRA Fibre Fineness Meter utilises the well proven air flow principle with which the average diameter of wool fibres can be obtained quickly. The new generation instrument incorporates a colour touch screen
interface, making the operation even easier. An on-board processor automatically controls the operation of the instrument and calculates test results for direct reading on the screen, and if required, relayed to a printer or PC,
using optional Windows software.

Test Method

A 2.5g sample of fibres is placed in the sample chamber. Air is drawn through the sample by a vacuum pump  upplied with the instrument. Electronic sensors measure both the airflow and the air pressure, from which the fibre diameter is Calibration automatically calculated

• Colour Touch Screen
• Automatic calculation of values Direct reading of results
• Complies with latest IWTO recommendations
• On-board processor
• Ergonomically designed
• Electronic flow and pressure sensors
• RS232 output to printer or PC Re-calibration facility included with software
• Full calibrated service available for existing instruments

Calibration

Each meter is calibrated using standard dry-combed tops available from Interwoollabs. Calibration for dry combed tops is carried out in accordance with method 2 in test method IWTO-6- 98. For the testing of loose wool core samples, the meter is calibrated using short randomised open fibre, prepared from standard tops following the rocedure in test method IWTO-28- 00. Special calibrations are available for the testing of fibres other than wool
e.g. cashmere, mohair etc. Optional temperature and humidity probe allows automatic recording of lab conditions.