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Jun-23-16
 
According to:
Technique Regulation of Concrete Defect Detection with Ultrasonic CECS21: 2000
Depth measurement principle
When vibration energy transmits through the concrete and passes the crack, the vibrate energy will be diffracted at the point of the crack, whose diffraction angle has geometrical relationship with the crack depth. DJCS-05 crack depth measurement instrument adopts this geometrical between the diffraction angle and depth to realize high precision depth measurement.
Feature and Specification
Easily operation: Start measure when turn on, simply press to finish testing.
Result Intuition: No wave speed test and calculate to display the crack depth directly
Data processing: Data can transfer to PC, and then generate test report rapidly.
Depth scale: 10-350mm
Test precision: 5%
Data storage: 10600 depth data
Display: 4” Resolution 160*128
Power supply: 9VDC (6 AA battery)
Work environment: Temperature -5~40centigrade; Humidity 85%
Size: 220*180*80mm
Weight: 1000g
Jun-23-16
 
Purpose
SYQ61 concrete strength tester is used to test compressive strength of concrete by two ways: rebound and ultrasonic-rebound method. Also, it can be used to test sound time and speed in concrete.

Specification
Technical specification for inspection of concrete compressive strength by rebound method (JGJ/T23-2011)
Technical specification for detecting strength of concrete by ultrasonic-rebound combine method (CECS02:2005)

Performance
1. Multi-function for testing compressive strength of concrete. It is used to test the compressive strength of concrete by rebound method and ultrasonic-rebound method.
2. Get the compressive strength value of concrete by ultrasonic-rebound method in one instrument. It need two instruments usually, one to test sound speed in concrete, the other to test rebound value.
3. Can save test date. This is convenient for laborer data management.
4. Real USB transmission. Data can be transmitted to computer for future process and analysis.
5. Powerful data process and analysis software in windows. Test data can be export to word or excel for future process and analysis.

Technical Data
1. Permissible sound time error: +/- 0.1µs
2. Sensor frequency: 50KHz
3. Rebound kinetic energy: 2.207J
4. Rebound springs Rigidity: 785.0+/-40.0(N/m)
5. Rebound bar impact length: 75.0+/- 0.3 mm
6. Rebound value permission error: =< +/-1
7. Average rebound value on Calibration anvil: 80+/-2
8. Temperature: -4°C ~ +40°C;
9. LCD screen: 160*128(10×8cm)
10. Power: 6 dry cells, work more than 10 times
11. Size: 205mm*173mm*86mm
12. Weight: 850g
Dec-26-21
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Feb-20-23
 
GF112D is a single-phase handheld electronic meter test unit in accuracy class 0.1or 0.2, used for testing single phase electricity meters error on site. Wide measurement range from 1mA to 120A and 0 to 300V, and also can be used to test alternating current parameters - voltage, current, active power, reactive power, apparent power, harmonics, phase angle, power factor, frequency, energy etc.
May-21-18
Supplier From Beijing, China
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