1pc TN-72 VU Meter Front Amplifier DB Level Meter Power Meter With Backlight

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eBay TN-72 VU Meter Front Amplifier DB Level Meter Power Meter With Backlight Appearance organization: Pointer material:Nickel silver strips Pointer color: black Pointer swing direction: from left to right Pointer length: from the central axis to the needle end 33±1 mm Pointer width: 0.45 ± 0.05 mm Meter use direction: vertical Electrical Characteristics: 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. Current sensitivity: the pointer is from the zero scale to the maximum scale (full scale position) Sensitivity500uA± 10% 3. Internal impedance:650ohm± 10% 4. Insulation resistance Meter external box plus electrical circuit with 500V DC plus 50M ohm or more. The insulation resistance of the meter case and the electrical circuit is tested with 500V 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 zero scale overlap is ±1mm. 6. Equilibrium: The allowable error range of the meter when the standard position is tilted 90 degrees back and forth ±1mm 7. Sticker: Instantly add three times of over-current to the full-scale current and slowly reduce it to a reading of 1/2 of the current sensitivity. At this point, the pointer will return 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 indication point is ±1mm. 9. Brake: Instantly add the current value of the scale 2/3, within one second from the start to the time required for the pointer to indicate the position Special test: 1. Overload test Ten times the full scale current input every five seconds, this action is repeated nine times. Each time is 0.5 seconds, and the test remains normal after this test. 2. Vibration test: After the meter is packaged, it will be subjected to 1,000 times per minute and 4 mm vibration on the vibrating plate for 10 minutes in each direction. 3. Impact test: After the meter is packaged, it will fall from the height of 30 cm to the 3cm thick board, and the X.Y.Z. three-way test will be normal after this test. 4. Reliability test: After 100,000 calibration point current input, the current sensitivity limit is still within the standard 5. Environmental impact 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 1 kg of pulling force for 60 seconds without being affected. Other: 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 place the meter in direct sunlight and store the meter in the box to prevent foreign matter from entering the meter. 3. Soldering conditions: Place the terminal about 3 mm into the tin plate at 230 °C for 3.5 seconds. Stayed normal after this test Soldering temperature: Hand-held soldering gun temperature is 350 °C, the terminal is in contact for 3.5 seconds, and the front end of the terminal is about 3 mm in contact with the soldering gun. 4. Anti-static: Test with the dry nylon cloth on the surface of the transparent cover three times in the same direction. The difference between the hand on the scribe is less than 1/3 of the length of the scale, and the position is zero after three seconds. 5. Lamp specifications:DC12V 50mA green neon bulb Package: 1pc TN-72 VU Meter Front Amplifier DB Level Meter Power Meter With Backlight Payment Method: PayPal preferred Shippment: We provide free shipping to international via China Post Airmail. We can also ship by TNT/EMS/DHL/FedEx for alternative shipping method for corresponding fees. Please let us know before payment if you need split shipment. 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. Feedback: Your Feedback is really important to us, please take a few seconds to leave great feedback if you are satisfied with our product or service, thank you so much!

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