2pcs P-55 VU table head audio level meter DB power sound pressure 130uA w/backlight

Description:

Size: see picture;

Current measurement: 130 uA ± 10%;

Internal impedance: 650 ohm ± 10%.

Use temperature: -10 ° C to +60 ° C RH 35 to 85%;

Storage temperature: -20 ° C to +60 ° C RH 35 to 85%, Do not use the meter in direct sunlight, and store in the box to avoid foreign objects in;

Soldering temperature:Use the hand soldering gun with 350°C temperature to solder the front end about 3mm of the terminal for 3.5 seconds;

With backlight

Feature test:

Standard test conditions:temperature 20°C, humidity 70%.Can also be tested under normal temperature and humidity;

The zero position: standard with, the overlap tolerance between the pointer and the zero degree is ± 1mm when the number is 0;

Balance: when the meter standard position tilt 90 degrees from front or back, it allows the error range of ± 1mm;

Pointer stick: when add overcurrent of three times the full scale, and slowly reduced to the current sense 1/2, the pointer will return to the scale plate within 1/3 scale, to keep normal;

Friction: when the current slowly increases or decreases to a certain value, the error range of the point is ± 1mm;

Brake: it only needs one second or less when the input current from 0 degree to 2/3 scale plate immediately;

Overload test:on each interval of five seconds input ten times the full scale current, the action is repeated nine times for each time of 0.5 seconds;

Vibration test:put the packed meter in the vibration plate with vibration of 1,000 times per minute, up and down 4mm shock, test in each direction for 10 minutes, keep normal;

Shock test: the packed meter dropped from a height of 30cm into a 3cm thick wooden board, test in XYZ three directions, maintain normal;

Reliability test: input 100,000 calibration current, the current sensor is still within the limits of the standard;

Environmental stress test: temperature of 50 ° C, humidity 85%, for 100 hours, maintain normal;

Terminal voltage test: terminals must withstand one kilogram of voltage, sustained 60 seconds will not be affected;

Antistatic electronic test: cover the surface with dry nylon, then test three times in the same direction to ride the spot, if the number is 1/3 or less of the scale, it will go down to zero after three seconds.

Package:

2pcs p-55 High Precision VU Meter With Backlight.