As soon as the heat-transfer fluid has reached the starting temperature, the specimens are inserted into the measuring stations and lowered manually into the oil bath. In the next step the test weight specified in the standards is applied manually and the menu-driven test-sequence is started on the PC.
On completion of pre-heating under the influence of force, the displacement signals are zeroed (program-controlled) and the heating of the heat-transfer fluid at the pre-set rate is started. As soon as the required deflection, outer-fiber strain or penetration is attained, the heating is switched off and the test is ended.
Re-cooling of the heat-transfer fluid is started manually or by the PC via a solenoid valve. Specimens can afterwards be removed.