NJC61 Nonmetal Ultrasonic detector - NJC61

Purpose
Testing building foundation piles by crosshole ultrasonic wave method .
Inspecting concrete defects by ultrasonic method, such as uncompacted place, cellular hole area
Detecting concrete strength by ultrasonic-rebound combined method
Detecting concrete crack depth by ultrasonic method
Detecting the wall defects of the hole by one transmitter and two receivers
Detecting the strength performance of geotechnical investigation, rock, concrete, etc
Specification
Technology specification for inspection of concrete defects by ultrasonic method CECS 21:2000
Technical specification for detecting strength of concrete by ultrasonic-rebound combine method CECS 02:2005
Performance
Fast, precise and automatic to judge the sound parameters. Real-time wave display to assure test efficiency
Graphically display the test data, the user can view result directly.
Can connect with the test hammer directly to detect the concrete strength. The function has been applied for national patent.
Can receive signal with strong sensitivity more than 10m without defects in concrete.
The host can supply energy to transducer without external power.
Standard USB storage with big capacity
Interior lithium battery can supply working power more than 6 hours. And more than 12hours combined with external lithium battery.
Portable, small and light apparatus(1.75kg)
Extending function to test concrete thickness by impact-echo method
Professional and powerful analysis software on Windows system can output the data to Excel or word for advanced analysis.

Technical data
Item Specification
Main control unit High-performance embedded computer
Input method keyboard
Interface USB
Receive channel one
Transmission mode Continuous and external
Receive sensitivity ≤30uv
Amplifier bandwidth 10kHz to 300kHz
Sound time accuracy 0.05us
Display 640*480 high brightness TFT panel
Storage 1G(Interior)
2G(U-Disk)
Max sample data length 64k
Trigger voltage 65,125,250,500,1000(selectable)
Amplifier gain 82dB
Sample periods 0.05us to 6.4us,8grade adjustable
Amplifier resolution 0.39%
Power Interior lithium battery works more than 6hours
External lithium battery works more than 6hours (Optional)
DC 12V interface
AC 100V-240V,50/60HZ
Size 260*185*60mm
Weight 1.75kg(including the battery
Temperature -10℃~ +40℃