Appearance agency:

1 Movable part, moving coil type

2 Appearance size method See P-134 for details

3 degree plate See P-134 for details

4 pointer material Nickel silver strips

Pointer color orange

Pointer swing direction from left to right

Pointer length From central axis to needle end 70±1 mm

Hand width 0.45 ± 0.05 mm

5 The direction of use of the meter is vertical

Electrical performance:

6 Standard test conditions The temperature is 20℃, the humidity is 70%, and there is no difference in the test results.

It can also be tested at room temperature and humidity

7 Current Sensitivity Pointer at zero scale to maximum scale (full scale position) Sensitivity 1000 uA ± 10%

8 Internal impedance 100Ω± 10%

9 Insulation resistance The outer box of the meter and the electrical circuit should be 500V DC plus 50M ohm or more.

The insulation resistance of the electrical circuit is tested with a 500V DC voltage to test its insulation value

10 Zero position The meter uses a standard posture, and the front end of the pointer and the center of the zero scale are used as a reference.

The pointer and the zero scale overlap allowable error of ±1mm

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

12 When the pointer is stuck, the overcurrent is added to three times the full-scale current in an instant, and the overcurrent is gradually reduced 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 plate

13 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

14 Braking Add 2/3 of the current value of the scale plate at an instant, and the time required from the start to the pointer position is less than one second

Special test:

15 Overload test Ten times the full scale current is input every five seconds, and this action is repeated nine times. Each time is 0.5 seconds

After this test, 7-14 items remain normal

16 Vibration test After packaging, the meter is subjected to 1,000 up and down 4mm vibrations per minute on the vibration plate.

10 minutes in each direction. After this test, 7-14 items remain normal

17 Impact test After being packaged, the meter is dropped from a height of 30 cm on a 3cm thick wooden board, tested in X.Y.Z. three directions

After this test, 7-14 items remain normal

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

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

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

Other:

21 Operating temperature limit －10℃ to＋60℃ RH 35 to 85%

22 Storage temperature limit -20℃ to＋60℃ RH 35 to 85%

Do not place the meter under direct sunlight, and store the meter in the packaging box to prevent foreign objects from entering the interior of the meter

23 Soldering conditions Put the terminal about 3 mm into the tin plate at 230℃ for 3.5 seconds

After this test, 7-14 items remain normal

Soldering temperature: Hold the solder gun at a temperature of 350°C, contact the terminal for 3.5 seconds, and the tip of the terminal is about 3mm in contact with the solder gun

After this test, 7-14 items remain normal

24 Anti-static Use a dry nylon cloth to test three times in the same direction on the surface of the transparent cover, and the difference of the pointer on the scale is at the length of the scale.

Below 1/3, return to zero position after three seconds

25 Lamp specifications without backlight