1PCS TN-42AB High-precision VU Meter Pre-stage DB Level Meter with Backlight

Description

1PCS TN-42AB High-precision VU Meter Pre-stage DB Level Meter with Backlight
Appearance agency
1 Movable part, moving coil type
2 Appearance size method See TN-42AB for details
3 degree board See TN-42AB for details
4 pointer material Nickel silver strips
Pointer color black
Pointer swing direction from left to right
Pointer length From central axis to needle end 23±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 600Ω± 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 Bulb Specification Yellow LED 12V 20mA
package
1PCS TN-42AB High-precision VU Meter Pre-stage DB Level Meter Sound Pressure Meter with Backlight
Shippment:
1.We provide free shipping to international via China Post Airmail or Hong Kong Post Airmail, and every parcel will be registered with tracking number. We can also ship by UPS/EMS/DHL/FedEx for alternative shipping method for corresponding fees. Please let Us know before payment if you need split shipment.
2. International shipping requires complicated shipping procedures (such as both countries customs, transit stations etc.), also will be affected by many factors, such as holidays, weather conditions etc, If you have not received your shipment within 30 days from payment, Please contact us.
3.Time of Delivery:Based on the China Post Airmail or Hong Kong Post Airmail and our experience, kindly please be that that To United States / United Kingdom / Australia, it takes around 10-15 business days; To Canada, it takes around 12-18 business days; To Brazil / South America, it takes around 25-35 business days. To Italy / France / Spain / Germany/ Eastern Europe, it takes aournd 15-20 business days.
Returns & Replacements & Repair:
We accept returns & replacements within 30 days from the day the customer receive the products, please make first contact within 30 days from receiving the order. Products should be returned in original condition. As a benefit to our customers, we also provide repair within 3 Months from the day when this item is shipped out, after repair is done, we will send you the item, but the customer should pay both shipping ways.
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