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Blasting vibrometer L20-S【Local version】 L20-S blasting vibrometer is a traditional blasting vibrometer with reliable performance and simple operation. The instrument is designed for engineering blasting, meets the supervision requirements of the public security department and the blasting industry standard, and is used to evaluate the vibration pair caused by blasting construction. Near the impact of the protection, since its listing in 2011, it has accumulated more than two sets of sales and participated in tens of thousands of test projects. It is the preferred blasting vibration monitoring equipment for testing organizations. 一、Field of application [1] Underground blasting vibration detection
Vibration detection of tunnels, subway tunnels and hydraulic tunnels due to drilling and blasting
[2] Open-air blasting vibration detection
Construction vibration detection of urban shallow hole blasting, complex environment deep hole blasting, narrow valley blasting
[3] Demolition blasting vibration inspection
Demolition blasting vibration detection of buildings, bridge chimneys, cooling towers, workshops, cofferdams, dams, etc.
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| 二、Advantages and characteristics |
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 legitimateIt has the calibration certificate for manufacturing measuring instruments license, performance inspection report and measurement department, which can pass the legality of testing and measurement; |
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Leading Provides 3 channels, 24-bit A/D and 100K sample rate signal recording, with the highest level of amplitude and time accuracy in the industry; |
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General purpose It not only supports three-component speed/acceleration synchronization test, but also provides a variety of signal recording modes to meet the monitoring needs of different vibration sources; |
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Easy to use The user interface is friendly and easy to operate. After each event is recorded, the vibration peak and the main vibration frequency can be immediately viewed through the on-board display, and the data file can be quickly exported through the USB flash drive;
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reliable The aluminum alloy casing, hermetic electronic components and metal aviation joints ensure long-term trouble-free service in the most severe environmental conditions; |
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Portable Built-in large-capacity hard disk and lithium battery pack, can complete the test work independently; small size, light weight, standard special instrument box, easy to carry.
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 First, the function Vibration record
1. Level mode
2. Adaptive mode
数据获取
1. On-site U disk high-speed access
2. Instrument connected to computer
3. LAN access
信号分析
1. Frequency spectrum / power spectrum / first order integral / first order differential / high low pass filtering
2. Three vector synthesis calculation
3. Sadowski's empirical formula calculates K andα
监测报告
1. Incident report
2. Seismic wave attenuation calculation report
其他功能
1. Support local calibrator zero
2. Upgrade and maintain the system through a USB flash drive
3. Synchronize clock with computer
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二、性能
Performance
Channel: 3 channels, standard vibration speed sensor (optional acceleration)
Range：0.0017~35cm/s
Resolution：0.0001cm/s
Precision：±5%
Frequency Range：5~500Hz
A/D accuracy：0.000021mm (24Bit)
Time accuracy：0.01ms (100k sps)
Waveform record
Record mode: manual, single, loop
Vibration contact valve: 0cm / s ~ 3.5cm / s or higher than the natural vibration of the environment 5% (adaptive)
Record stop: fixed recording duration or recording continues until the vibration is below the touch threshold 1 second
Recording time: 1s~99s, 1 second step can be set continuously
Negative delay：0.25s
Storage capacity: 10240 files with a duration of 4 seconds
Physical parameter
size：168mm*99mm*64mm
weight：1.20kg
Display: 3.5 inch LCD screen, eigenvalue, waveform display
Battery: 7.2V lithium battery, working continuously for 3 days
Button: 8 touch buttons
Output interface: USB2.0 interface and Rj45 network port
Operating environment: -30~75 °C, 90 % RH
Protection level：IP57
Warranty: Warranty period is one year (only change)
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一、Standard list
L20-S type vibration monitor
TT-3/5-500HzThree-component speed sensor
Power adapter (charger) protection box
Shield signal line, network cable, multi-function data cable, and USB cable
CD or U disk contains client installation package, operation tutorial
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Applicable field of L20-S blasting vibrometer
[1] Underground blasting vibration detection The impact of vibration caused by drilling and blasting on mountainous tunnels, subway tunnels, and hydraulic tunnels on upper buildings, facilities, or adjacent existing lines;
[2] Open-air blasting vibration detection
Dangerous effects of shallow hole blasting in urban areas, deep hole blasting in complex environments, and blasting of narrow valleys and chambers on adjacent buildings, facilities and equipment.
[3] Demolition blasting vibration detection
Impacts and evaluations of vibrations caused by demolition blasting of buildings, bridge chimneys, cooling towers, powerhouses, cofferdams, dams and foundation pits on adjacent buildings
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| Example 1: Monitoring of the impact of blasting construction on the existing dams in the expansion project of the South Russia Lake Hydropower Project in Laos
In March 2015, commissioned by the 15th Engineering Bureau of China National Water Resources and Hydropower Corporation, our equipment participated in the blasting vibration monitoring of the expansion project of the South Russia Lake Hydropower Station in Laos. The blasting vibration data was monitored in real time by arranging monitoring points on the dam and in the machine room. Provide data support for safe construction and stable operation of hydropower stations.
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Example 2: Monitoring the impact of new highway blasting construction on the Yagou stone in ancient buildings
In November 2016, commissioned by the Heilongjiang Provincial Cultural Relics Bureau, our equipment participated in the vibration monitoring of the provincial-level cultural relics Yagou stone inscriptions. The distributed monitoring and centralized management method is used to arrange the important positions in the stone inscription, and the blasting parameters are modified in real time through the monitoring data, which plays an important role in ensuring the safety of the stone carving.
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Ground installation
1. Clean the surface of the object being measured;
2. Using gypsum powder as a binder, solidification is quick and easy to disassemble;
3. The X-axis points to the core, placed horizontally, and closely adhered to the surface to be tested;
4. The monitor is placed in a protective box to prevent the flying stone from damaging the instrument;
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Platform
text document
Picture material