P-97 High Precision Bile Amp Preamp VU Head DB Power Amplifier Peak Level Meter Sound Pressure Meter with Backlight

Parameters:

Size (width x height in mm): 98x78mm

Pointer material: nickel silver strip

Pointer color: orange

Pointer rotation direction: from left to right

Pointer length: from the center axis to the end of the needle 54 ± 1 mm

Pointer width: 0.45 ± 0.05 mm

Direction of gauge use: vertical

Electrical power:

1. standard test conditions: Temperature 20 ° C, humidity 70%, for the test results are not different, can also be tested under normal temperature and humidity.

2. actual sensitivity: the pointer ranges from the zero scale to the maximum scale (end position). Sensitivity 1000 uA ± 10%

3. internal impedance: 100Ω ± 10%.

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

5. zero position: the standard position of the meter is used. The position where the front end of the pointer is combined with the center of the zero scale is the tolerance of the reference pointer and the overlap of the zero scale is ± 1 mm.

6. balance: the allowable error range of the gauge when the standard position is tilted 90 degrees back and forth ± 1 mm.

7. sticker: Immediately add three times overcurrent to the scale end current and slowly reduce to half the current sensitivity. At this time, the pointer returns to the scale of 1/3 of the scale.

8. friction: When the current is added to the meter and slowly increased or decreased to a certain value, the error range of the indicator point is ± 1 mm.

9. brake: immediately add the current value of the scale 2/3 within one second from the start to the time it takes the pointer to indicate the position.

Special test:

1. overload test Ten times the full current input every five seconds. This action is repeated nine times. Each time is 0.5 seconds, then 7-14 elements remain normal.

2. vibration test: After the meter is packed, it is subjected to 1,000 times per minute and 4 mm vibration on the vibration plate for 10 minutes in each direction. After the test, 7-14 elements remain normal.

3. impact test: After the meter is packed, it is dropped from a height of 30 cm onto the 3 cm thick plate X.Y.Z. Three-way test, after which 7-14 items remain normal.

4. reliability test: After current input of 100,000 calibration points, the current sensitivity limit is still within the standard.

5. environmental compatibility test: temperature 50 ° C, humidity 85%, for 100 hours, 7-14 items remain normal after this test.

6. terminal pull test: the terminal must withstand 1kg pull force for 60 seconds without being affected.

Others:

1. operating temperature limit: -10 ° C to +60 ° C RH 35 to 85%.

2. storage temperature limit: -20 ° C to +60 ° C RH 35 to 85%.

 Do not expose the meter to direct sunlight and keep it in its packaging to prevent foreign matter from entering the meter.

3. soldering conditions Insert the clamp about 3 mm into the tinplate at 230 ° C for 3.5 seconds.

4. soldering temperature The temperature of the hand soldering gun is 350 ° C, the clamp is in contact for 3.5 seconds and the front end of the clamp is in contact with the soldering gun for about 3 mm.

5. antistatic: test three times with the dry nylon cloth on the surface of the transparent cover in the same direction. The difference of the pointer on the recorder is less than 1/3 of the length of the scale, and the position returns to zero after three seconds.

6. lamp specifications: 2 blue LED backlights (20 mA at 2.9 - 3.2 V) can be changed to 12 V for free.

Package:

1pc  P-97 VU Level Meter Audio Volume Unit Display Peak AMP DB Table Panel Level Meter.