Some of the BVM-20 air shock wave tester in aerospace power high pressure air test application

Some problems in the application of BVM-20 air shock wave tester in aerospace power high pressure air test

BVM-20 air shock wave tester

Impact channel 1, impact channel 2.

Product introduction:

   The engineering blasting and mechanical impact impact compression on the surrounding air, and the pressure wave forming the dynamic fluctuation is higher than the free air, which may cause damage to buildings or structures within a certain distance. The instrument is currently the best performance air shock wave test in China. Instrument, already   Widely used in aerospace, highways, railways, bridges, dams, buildings, tunnels, quarries, mines, directional demolition and other engineering sites with air impact monitoring needs. At the same time, it has also been used by domestic universities, research institutes and supervisors for scientific research and teaching and impact environmental supervision and evaluation.

Main Specifications

l       People's Republic of China manufacturing measuring instruments license

l        Designed according to the requirements of GB6722-2003 Blasting Safety Regulations;

l    Quantitative impact: Dp specific impulse, positive pressure action time, overpressure, full waveform event

l    through     Road: 2 channels using overpressure (shock wave) detector

l    the amount     Cheng: 0 ~ 5MPa or 0 ~ 10MPA

l    Resolution: 0.01Mpa

l    Test accuracy: +/-10% or +/-1dB,

l Display accuracy: 0.001%

l Frequency response: 0 ~ 1000Hz ,

l Cable length: standard configuration 2m

l Maximum cable: 75 m

record

Record mode:    Automatic mode, unattended,

Trigger gate valve: 0 ~ 0.2Mpa (normal impact test) or 0.001Mpa ~ 5Mpa or 0.001Mpa ~ 10Mpa (EHV impact test)

Sampling Rate:    20,000 samples /s (independent of recording time)

Recording time:    Intelligent matching according to overpressure signal for any length of time

storage:    2GB storage space, 1000 full waveform events

Cycle Time:    Recording will not be interrupted due to event processing, zero time lag

Stop mode:    Automatic segmentation stop

Physical parameter

ruler     Inch:   158 x 115 x 62mm ,

weight     the amount:   0.98kg

Electricity     Pool:   Continuous monitoring for more than 72 hours

PC interface:   RJ45 standard network interface

warranty period:   2- year warranty (lifetime warranty)

User Interface:   Square touch button 6 button control

Display     Show:   3.5 inch Chinese interface display

Use environment

Overload pressure:   10MPa or more

temperature     degree:   -20 °C to 60 °C

wet     degree:   Non-condensing environment

waterproof level:   IP67 industrial and waterproof

Software software

File Management : Automatically download, store, print and shrink multiple formats of archives

General Report : Customized Event Report, Full Color, Single Page Report

FFT report : Analyze the frequency capacity of the waveform and automatically calculate the dominant frequency

Monitoring and evaluation : the degree of damage to exposed buildings and structures

Parameter calculation : typical blasting safety distance calculation Â