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Accurate control of Yarn Temperature is critical in many filament yarn processes, yet making direct measurements of yarn temperature to control processes has been impractical due to:
- The cost and complexity of the equipment required
- the difficulty and time consuming nature of the measurements
The MicroScan with the FH110 Temperature probe eliminates these problems, providing a revolution with quick and accurate at line measurements with a very portable instrument.
MicroScan - Method of Measurement
Temperature measurements are made using the MicroScan together with the FH110 Temperate Probes. The FH110 provides extremely accurate measurement of yarn temperature by using an Infrared sensor to compare the temperature of the yarn with a controlled background temperature. The measurement range of the FH110 is from ambient +5°C to 250°C. The software includes facilities to compensate for differences in the emissivity values of yarns.
The accuracy of the measurement is assured by the use of an accurate RTD reference, against which the temperature of the yarn is compared. The comparison is done using a high precision Infrared sensor that focuses to a spot size of 0.6mm ensuring that by using the Fibrevision comparator technique even the finest yarns and filaments can be measured. 
This measurement technique offers many advantages over alternative technologies:
- Accuracy in not affected by external influences such as
- friction with the running yarn
- Air currents
- Calibration is very quick and fully automatic
- Measurements only take a few seconds
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