The dial reserves the PEAK lamp (peak indicator) installation position, and the PEAK lamp function needs to be prepared by yourself.

Standard test conditions: temperature 20℃, humidity 70%, when there is no difference in test results,

It can also be tested at room temperature and humidity

Current sensitivity: the pointer is at the zero scale to the maximum scale (full scale position), the sensitivity is 280uA ± 10%

Internal impedance: 600ohm± 15%

Insulation resistance: 500V DC plus 50M ohm or more for the outer box of the meter and the electrical circuit. The insulation resistance of the meter housing and the electrical circuit is tested with a 500V DC voltage.

Zero position: The meter uses the standard posture. The place where the front end of the pointer and the center of the zero scale are combined is the reference pointer and the zero scale overlap. The allowable error is ±1mm

Balance: The allowable error range of the meter is ±1mm when the standard position is tilted forward and backward by 90 degrees

Pointer sticking: instantaneously add the full-scale current three times the overcurrent, and slowly decrease to the reading of 1/2 of the current sensitivity, at this time the pointer will return to within 1/3 of the scale of the scale board

Friction: When adding current to the meter, and slowly increasing or decreasing to a certain value, the error range of the indication point is ±1mm

Braking: Instantly add 2/3 of the current value of the scale plate, within one second from the beginning to the pointer indicating position

Special test

Overload test: Input ten times the full scale current every five seconds, and this action is repeated nine times. Each time 0.5 seconds after this test 7-14 items remain normal

Vibration test: After packaging, the meter will vibrate 4mm up and down 1,000 times per minute on the vibrating plate, 10 minutes in each direction. After this test, 7-14 items remain normal

Impact test: After being packaged, the meter is dropped from a height of 30 cm on a 3cm thick wooden board. The X.Y.Z. three-direction test is normal after this test for 7-14 items.

Reliability test: After 100,000 calibration point current input, the current sensitivity limit is still within the standard

Environmental impact test: temperature 50℃, humidity 85%, lasting 100 hours, after this test 7-14 items remain normal

Terminal pull test: the terminal must withstand a pull of 1 kg for 60 seconds without being affected

package

1pc TN-65 vu meter with backlight