Problems and solutions during the use of universal testing machine

Universal testing machineProblems and solutions during use

1. The universal tester stalls or stops

① After the photoelectric switch at the tail of the motor is running for a long time, the receiving part on one side is worn.

Solution: Replace the photoelectric switch

② There is a problem with software parameter setting

Solution: Reset the parameters of the software

2. The zero-point fluctuation of the force value of the universal test machine

After several years of use of the test machine, the zero point of the force will generally fluctuate up and down.

① Oil circuit blockage

Solution: Replace the oil again and clean the oil circuit

②The voltage used by the machine is unstable

Solution: Use a voltage regulator to adjust the voltage

③The sensor has been damaged by collision

Solution:

a. Replace the sensor again

b. Reset the test machine.

3. Errors occur in the measurement results of the test machine

Electronic universal testing machine

①Host part

If the main engine part is not installed horizontally, it will cause friction between the working piston and the working cylinder wall, resulting in errors. Generally, it is positive difference, and the error generated gradually becomes smaller as the load increases.

②Power gauge part

If the dynamometer part is not installed horizontally, it will cause friction between the swing shaft bearings, which is generally realized as a negative difference.

The above two errors have a relatively large impact on small load measurements and a relatively small impact on large load measurements.

Solution: a. First check whether the test machine is installed horizontally and level the main machine with a frame-type horizontal ruler in two directions where the outer rings of the working cylinder are perpendicular to each other.

b. Adjust the front and back levels of the dynamometer on the front and back of the dynamometer, align the edge of the dynamometer with the inner engraving line, and use a horizontal ruler to adjust the left and right levels of the body with a horizontal ruler.

Hydraulic universal testing machine

①Host part

In addition to the installation of the main engine part, the friction may also come from the inside of the oil cylinder. If there is debris inside the oil cylinder or the viscosity of oil is too large, it will produce friction and affect the measurement results.http://www.hssdtest.com/