Determining Raw Flax Regain Mass for Dock Intake Reconciliation
Dock intake reconciliation converts landed gross weight to bone-dry mass via core oven desiccation before adding official twelve percent commercial regain.
Fiber Moisture Dielectric Probe
Probe Calibration
Continuous electromagnetic testing relies on a specialized fiber moisture dielectric probe to measure water content within flax roving during high speed spinning operations. Mill operators calibrate this instrument against oven dried samples from the preparation room before processing any new lot of hackled line fibre. High frequency radio waves penetrate the moving strand, registering capacitance variations as permittivity shifts according to bound and free water proportions.
That electrical response translates directly into a digital moisture reading on the spinning frame console, allowing technicians to adjust drafting tension immediately.
Moisture Threshold
Acceptable water activity levels remain strictly bounded between nine and twelve percent for dry spun yarns destined for export markets. Exceeding twelve percent invites microbial growth during subsequent package dyeing, whereas dropping below nine percent causes brittle filament breakage during drafting. Buyers specify these limits within the formal contract specification document, holding mills accountable for deviations detected during final auditing.
Quality control inspectors record compliance figures on the lot dispatch sheet, referencing the specific calibration curve used during the shift.
Dielectric Variance
Raw material variability introduces significant error when ambient humidity fluctuates across the spinning floor. Flax fibers absorb atmospheric vapor differently depending on pectin content and retting history, altering baseline permittivity independently of true internal moisture. Technicians compensate for density shifts by pairing capacitance readings with optical mass sensors mounted directly above the drafting rollers.
That dual parameter approach prevents false rejections caused by uneven sliver weight rather than actual water excess.