Electronic universal testing machine key functions

The digital display instrument of electronic universal testing machine adopts a 16-bit microcomputer and is carefully designed and constructed. There are two input signals. One analog signal comes from the S-type tension sensor. After 12-bit high-speed A/D conversion, the other input is limit protection. Socket, output signal has one way, that is, drive motor signal interface. The overall design of the electronic universal testing machine is compact, responsive, and stable and reliable. It is a control instrument for various analog physical quantity measuring instruments.

The universal universal testing machine is connected and powered on. The host and the digital display each have a socket, and the host is a 380V four-core motor power socket. The display device is 220V, and the three-core power supply is connected to the outlet. After the power supply is connected to the outlet, the system can be powered on.

The keyboard and display of the electronic universal testing machine have a total of 12 displays on the upper and lower rows in the display window, 6 on the upper row and 6 on the lower row, and a speed display on the lower 6 rows on the left. Prompt P). The force value is displayed as Newton. When the force value is displayed, the expression range is from 00000 to 99999. The next row and the last four digits are the speed display. The expression range is from 0000 to 9999 and the unit of measure is mm/min.

There are twenty-four keys on the front panel of the instrument, among which 0~9 ten number keys, and the remaining fourteen are function keys. They respectively perform various operations required by the system. The following describes their functions.

1) Correction key, the function key to correct the linearity of the system, so that the system error is reduced to small, the method is: press the calibration key first, the display window displays 00000, and then hang a known force value on the sensor, if the upper window shows the value of If the force values ​​are known to be equal, the calibration is completed. Otherwise, the linear potentiometer corresponding to the instrument's measuring range is adjusted to be equal. This is repeated until the displayed value is equal to the linked force value after the known force value is hung.

2) Return key, the control system returns to the starting position in manual operation.

3) Fix 1 button, after the tensile test starts, press the "Disteance 1" button once when the test material is stretched to the length of the extension 1 and the system will automatically save the tensile strength of the test material to the moment of extension 1 The value can be displayed by first pressing the "Display" key and then pressing the "Extension 1" key.

4) Set the extension 2 key. After the tensile test begins, press the "define 2" key once the test material is stretched to reach the length of the extension 2. The system will automatically save the tension value when the test material is stretched to the extension 2 The value can be displayed by first pressing the "Display" key and then pressing the "Extension 2" key.

5) Display key, "display" key is combined with "fixed extension 2" and "fixed extension 1" key respectively, and the corresponding pull force saved value is displayed, that is, the tension value at the time of extension 2 and the tension value at the time of extension 1 are displayed. To cancel the echo, simply press the "Display" button again.

6) Speed ​​key, press this key to enter the system rise and fall speed, three integers, range 0000-9999 mm / min.

7) Range key, select the system working range. Use with the setting key as follows: “Reset” + “Up/Down” + “Range”, at this time, the upper window has six-digit flashing, you can input the range you want to use, but warn. User: This range has been set to 100KN. Please do not set it again.

8) Work key, press this key and the system will start testing.

9) Up key, press this key to control the crossbeam to run upwards according to the input speed.

10) Down key, press this key to control the crosshead to run at the input speed.

11) Stop key, press this key to control the running motor to stop running, but it must be noted that pressing this key after pressing the work key is invalid, you must press the reset key to stop the motor running.

12) Up/down, manual/automatic keys, system spare extended function keys.

13) Reset key, the system clears the function key, after pressing this key, the system displays "P" prompt.