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Industrial Acoustic Imager U1 (Power Board Version)
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Product Characteristics
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broadband
Built-in 132 digital MEMS grams, frequency range 1K ~ 100KHZ
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High bright screen
8 Touching TFT LCD Screen Clearing, Resolution 1280*800
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Distance
Working distance covers 0.5 m to 120 m
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adjustable focus
Camera zoom, real-time frame rate up to 25 frames
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Can be multi-source
Hold multi-source mode, each source can show real-time amplitude
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Can be monitored
Hold the machine to monitor the function, can monitor the sound signal in real time.
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Temperature measurable
Optional infrared module to detect abnormal heating
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Multi-language
Support display Chinese simplified, traditional, English, Japanese, Korean, Russian, German, Arabic and other languages, to adapt to customers at home and abroad
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Product Application
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Project |
Parameter Index |
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Acoustic Sensing and Imaging |
Number of microphones |
132 digital MEMS microphones |
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Frequency range |
1KHZ ~ 100KHZ |
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Working distance |
0.5 m to 120 m |
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Field of View (FOV) |
63 °± 5 ° |
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Nominal frame rate |
25 FPS |
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Visible light camera |
Pixel |
500W |
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Field of View (FOV) |
63 ° ±5 ° |
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Image Mode |
Color |
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Focus |
Specified multiple zoom (non-infinite zoom) |
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Screen |
Display |
8 "LCD, with backlight, bright screen, clear and readable in sunlight |
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Resolution |
1280 x 800 |
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Touch screen |
Capacitive |
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Image Storage |
Memory/Storage Capacity |
32G |
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Image Format |
JPG |
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Video Format |
MP4 |
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Save Video |
With photo and video functions, can be converted into a sound wave test signal visual image, video and audio data |
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Headphone monitoring and recording function |
It has the function of earphone monitoring sound source and video recording function at the same time. |
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Acoustic measurement and analysis |
Sound pressure range (typical) |
12.1 dB SPL 114.6 dB SPL (± 1 dB SPL 2 kHz) |
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Automatic max/min dB gain |
Automatic or manual. Can adjust the spot display size, accurate location of the fault point |
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Band selection |
Automatic or manual. Automatic mode can automatically adjust the frequency range |
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Source Visualization Mode |
User can choose between single-source or multi-source detection and automatic tracking |
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Center point marker function |
and can be set to display or not to display |
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LED fill light |
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With 2 LED fill light matrix |
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Communication and Interface |
Communication Module |
Support 4G full netcom, antenna built-in |
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Bluetooth |
Support |
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WIFI |
Support |
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USB |
One OTG U port and one host U port for data export |
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Headphones |
Headphone interface |
Support headphones to monitor sound signals in real-time and recorded files |
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Mechanical |
Dimensions (without hand strap)(H x W x L) |
260mm*170mm*38mm |
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Weight |
1.6kg |
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Protection level |
IP40 |
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Power |
Battery Type |
Lithium-ion rechargeable battery |
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Battery life |
> = 4 hours (this product includes mobile power, total> = 8 hours) |
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Charging method |
External charging |
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Environmental requirements |
Working temperature |
-20°C to 50°C |
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Storage temperature |
-30°C to 60°C |
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Humidity |
10% to 95%, non-condensing |
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Product Parameters
Partial discharge
In power system, insulation defect is a common fault. There is a common feature before the occurrence of insulation defect failure, that is, partial discharge will occur. Each release will have some effect on the insulation medium, so that its insulation strength decreased. If insulation damage occurs, it will cause damage to electrical equipment and even endanger the safety of personnel. For many years, power companies have been performing partial discharge measurements on high-voltage electrical equipment, which is a measure of insulation degradation. Accompanied by partial discharge, the process will produce a crack-like acoustic emission, resulting in ultrasonic waves and soon spread around. The intelligent audio-visual instrument is an intuitive and easy-to-use tool that can identify the sound frequency of the local sound. It uses 132 highly sensitive digital microphone arrays to convert the collected sound into visible light images and present them on the screen in the form of maps to help the team detect and find the local sound as early as possible.
Common types of partial discharge
1. Corona discharge: This common form of partial discharge occurs when charge is dissipated directly into the air from the sharp surface of a conductor. (This is the cause of sound and radio frequency emissions.) From a damage or safety point of view, there is usually no need to worry about corona discharge.
2. Arc discharge: Arc discharge is a long-term discharge caused by electric breakdown of gas. Plasma is created when an electric current flows through air or any other medium that is not normally conductive.
3. Surface discharge: When the discharge propagates along the insulating surface, it is called surface discharge or surface marking. It is probably one of the most destructive types of partial discharge. Contamination and weatherization of the insulator surface are the two most common causes of surface discharge. In medium and high voltage equipment, this discharge occurs when the insulation is damaged (usually due to high humidity or poor maintenance). Moisture intrusion is also a common cause of surface discharge.
4. Air gap (internal) discharge: This is usually caused by defects in solid insulation such as cables, bushings, and GIS joint insulation. Air gap discharges are extremely destructive to insulation and usually continue to expand until they cause complete failure.
Losses caused by partial discharge
Comparison between traditional means and intelligent sound imager
Test site
Test Report Analysis
FAQ
1. Can the partial discharge of the insulator be seen with an infrared thermal imager?
Answer: It may be possible. When partial discharge occurs on an insulator, it may cause the temperature of the discharge site to rise, but this is not necessarily the case. There is also the possibility that the temperature does not change or changes very little and cannot be detected by a thermal imager. Therefore, it is better to use an acoustic imager to detect partial discharge, and an infrared thermal imager can be used as an auxiliary.
2. How far can the acoustic imager measure?
Answer: The detection distance is related to the size, voltage level and discharge intensity of the on-site local discharge point. After on-site measurement, for common partial discharge faults, the general actual detection distance can be 0.5-60 meters.
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