Abstract: An example device for selection of one or more masses among a plurality of masses arranged and removably fixed to a guide of a main frame of a test machine for determining material properties of a material during a test, the selected mass or masses allowing to push an effector for performing the test, the device comprising: a means for selecting at least one mass among said plurality of masses, comprising a means to determine which mass or masses are selected, said means to determine being configured to send a signal indicative of which mass or masses are selected to a computing unit for controlling a test process using the selected mass or masses.

Abstract: Machine for testing thermal resistance of plastic materials, comprising a tank configured, in use, to be filled for example with a heat-transfer fluid; a heating coil for heating the heat-transfer fluid; a temperature sensor generating a temperature signal of the heat-transfer fluid; and a control unit calculating a degradation index of the heat-transfer fluid on the basis of the temperature signal. In particular, the degradation index is calculated by determining the temperature range associated with the temperature signal, updating the corresponding partial heating time, and calculating the weighted sum of the partial heating times previously saved in memory and pertaining to different temperature ranges. Upon reaching one or more thresholds, signals are generated which indicate the need to replace the heat-transfer fluid.

Abstract: Machine and method for hot testing test pieces made of a thermoplastic polymer, in which the test pieces are immersed in a tank full of a heat transfer liquid which is heated; a fan generates, immediately above the tank, an air flow to carry away volatile substances emitted by the tank and the air flow is made to pass through a filtering cartridge housed removably inside a first chamber delimited by a casing, which is provided with an inlet opening, that faces towards the tank and is arranged flush with or immediately above an upper perimetral edge of the tank; the air flow is made to pass sequentially through at least three filtering elements, which are arranged hydraulically in series, including: a pre-filter; at least one activated carbon filter; and a HEPA filter; an hour counter signals when the time has come to replace the filtering cartridge.

Abstract: Machine and method for hot testing test pieces made of a thermoplastic polymer, in which the test pieces are immersed in a tank full of a heat transfer liquid which is heated; a fan generates, immediately above the tank, an air flow to carry away volatile substances emitted by the tank and the air flow is made to pass through a filtering cartridge housed removably inside a first chamber delimited by a casing, which is provided with an inlet opening, that faces towards the tank and is arranged flush with or immediately above an upper perimetral edge of the tank; the air flow is made to pass sequentially through at least three filtering elements, which are arranged hydraulically in series, including: a pre-filter; at least one activated carbon filter; and a HEPA filter; an hour counter signals when the time has come to replace the filtering cartridge.

Abstract: Machine for testing thermal resistance of plastic materials, comprising a tank configured, in use, to be filled for example with a heat-transfer fluid; a heating coil for heating the heat-transfer fluid; a temperature sensor generating a temperature signal of the heat-transfer fluid; and a control unit calculating a degradation index of the heat-transfer fluid on the basis of the temperature signal. In particular, the degradation index is calculated by determining the temperature range associated with the temperature signal, updating the corresponding partial heating time, and calculating the weighted sum of the partial heating times previously saved in memory and pertaining to different temperature ranges. Upon reaching one or more thresholds, signals are generated which indicate the need to replace the heat-transfer fluid.