| 摘要 |
A method and apparatus for monitoring the level of potential dyeability of a synthetic yarn while it is being produced in a plurality of steps that utilize electric power. Electric signals proportional to the power utilized in at least two of the steps are generated then fed to a computer which then computes indices of potential dyeability according to either a quadratic or linear polynomial function and generates output signals proportional to these indices. The computer output signals are then compared to preselected limits to determine and indicate the occurrence of out-of-limits dyeability values. In some situations, electric signals related to specific physical parameters other than electric power such as yarn tension, polymer viscosity and temperature may be used to supplement, or supplant the above signals in the computation.
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