Standard for Verification Method of Electronic Universal Material Testing Machine

According to the speed specified in GB/T228-2002 standard, the testing machine is used to stretch the standard tensile test specimen. When the standard tensile test specimen is in a stretched state, an electromagnetic flowmeter is installed on it with an extensometer or a strain gauge. The turbine flowmeter allows the electronic universal material testing machine to continue stretching the standard tensile test specimen. The extensometer or strain gauge displays the elongation of the standard tensile test specimen, converts it into a tensile value, and compares it with the same force point on the dial of the tensile testing machine as the standard tensile test specimen. The combustible gas detector determines the technical state and accuracy of the testing machine based on the difference between the comparison values.

This method utilizes Hooke's law to determine the accuracy of the testing machine by comparing the force value obtained by converting the elongation of the standard tensile specimen into a force value using an ultrasonic level gauge with the force value of the testing machine dial. This method greatly simplifies the verification process and brings great convenience and standardization to the daily verification of the original tensile state of the testing machine. The calibration method for gas detector electronic universal material testing machine is characterized in that, firstly, based on the force value of the tensile testing machine in the tested area, the pressure sensor selects a standard tensile sample, and the force value of the standard tensile sample is selected between 60% and 90% of the full-scale force value in that area. The standard tensile sample is clamped on the tensile testing machine,

According to the speed specified in GB/T228-2002 standard, the tensile testing machine is used to stretch the standard tensile test specimen. When the pointer of the universal material testing machine swings slightly, the differential pressure transmitter immediately stops stretching, indicating that the standard tensile test specimen is in a stretched state. At this time, the pressure transmitter installs an extensometer or attaches a strain gauge on the standard tensile test specimen

According to the speed specified in GB/T228-2002 standard, the tensile testing machine continues to stretch the standard tensile test specimen. The extensometer or strain gauge displays the elongation of the standard tensile test specimen. The ultrasonic flowmeter converts the elongation into a tensile value based on Hooke's law, and then compares it with the same force point on the dial of the tensile testing machine as the standard tensile test specimen. The technical status and accuracy of the testing machine are determined by the difference between the comparison values measured by the universal material testing machine.