FST.pdf

Country of origin：USA

Brand：Lawson-Hemphill

Overview:

FST, Force Shrinkage Tester measures the Shrinkage % and Shrinkage Force on the yarn simultaneously. The system is a closed unit, which maintains a controlled atmosphere as the test is progressing.

The system uses a high temperature heater to measure in Shrinkage % and Shrinkage Force. The heaters can be individually programmed up to 300˚C to run tests independent of each other. (Optional High Temp Heaters up to 450˚C)

The FST is equipped with 2 clamps. Different clamp designs are available to accommodate yarn types from tire cords to elastomeric yarns.

The standard load cell is 200g. Also available are load cells from 10g to 2000 g, depending on the yarn type to be tested.

FST Software automates all calculations for Shrinkage Force and Shrinkage % based on temperature and time parameters. In addition, built in temperature ramp feature allows the user to test the yarn against increasing temperature levels. This feature allows the operator to predict optimum temperature settings for run ability of individual yarns packages.

The test process is automated. A yarn sample is clamped and the test button is activated. Automatically the yarn is inserted into the closed heater chamber for testing. The software plots the shrinkage % or shrinkage force data in real time. Statistical analysis is made at the end of each test.

Features:

Automated testing system for simultaneous measurement of Shrinkage % and Shrinkage Force of the yarn

Complies with ASTM D4974, ASTM D5591, EN 13844

Enclosed system that maintains a draft-free environment during test

Dual, non-contact heaters individually programmable to run tests under constant or temperature ramp mode with 5 settings from ambient to 300˚C (Optional High Temp Heaters up to 450˚C)

10g, 200g or 2000g load cell available to meet the required force measurement precision

Light duty or heavy duty clamp designs available to provide non-slip grip for different yarn types from elastomeric yarns to tire cords

Friction free pulley to measure the Shrinkage % with ± 0.1% precision

Five programmable temperature settings allow temperature ramp and soak interval

Windows based, easy-to-use software features