Beijing SKE Technology Co., Ltd.

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

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

1. Follow the specifications: ASTM D5882 Standard Test Method for Low Strain Integrity Testing of Piles JGJ106-2003 (China) Technical code for testing of building foundation piles 2. Parameters:: 1). Size: 62 * 172 * 225 mm. 2). Weight: 2.0 kg. 3). High-contrast touch screen display. 4). Temperature range: Operating Range: 0° to 40° C; Storage Range: -20° to 65° C. 5). Powered by internal battery (6 hours duration). 3. Functional: 1). The LPT-E is used for Integrity pile testing and judging defect position 2). Automatic data storage 3). Signal amplification capability 4). Data can be averaged over a variable number of blows. 5). Variable signal amplification over time 6). 24-bit A/D converter 7). Sample size: 4k 8). Sample Frequency: 48kHz, 96 kHz,144 kHz

1. Follow the specifications: ASTM D4945 Standard Test Method for High-Strain Dynamic Testing of Piles JGJ106-2003 (China) Technical code for testing of building foundation piles 2. Physical (1) Size: 62 *172 * 225 mm (2) Weight: 1.7 kg (3) 8 inch and high brightness color LCD touch screen (4) Temperature range: Operating: 0° to 40° C; Storage: -20° to 65° C (5) The cables and connectors are suitable for PDA 3. Technical (1) HPT used for determining the pile bearing capacity and pile integrity. (2) It can be used for pile driving monitoring and the cast-in-place pile test. (3) Sampling frequency is Optional of 10 kHz, 20 kHz, 30 kHz and 40 kHz. (4) Sampling points are optional of 1024, 2048 and 4096. Maximum sampling time is up to 400 ms (5) Before test the two accelerometers and two strain transducers are self-checked automatically, determine whether the system is in normal state. (6) Automatically check the static strain deviation of the strain transducer during installation and adjusted to zero before blow. (7) Test data exported through the external u-disk (8) During test every blow can be saved automatically (9) Storage capacity of more than ten thousands blows. (10) HPT can be used for pile driving monitoring and the cast-in-place pile (11) HPT data can save as *.X01(used for PDA-W) (12) The main cable and connecting cable are compatible with the PDA. (13) Built-in lithium battery can be used more than 5 hours continuously. (14) PDAR program carry on CASE method analysis. (15) RCAPWAP program carry on match analysis automatically or manually.

1. Follow the specifications: ASTM D4945 Standard Test Method for High-Strain Dynamic Testing of Piles JGJ106-2003 (China) Technical code for testing of building foundation piles 2. Physical (1) Size: 62 *172 * 225 mm (2) Weight: 1.7 kg (3) 8 inch and high brightness color LCD touch screen (4) Temperature range: Operating: 0° to 40° C; Storage: -20° to 65° C (5) The cables and connectors are suitable for PDA 3. Technical (1) HPT used for determining the pile bearing capacity and pile integrity. (2) It can be used for pile driving monitoring and the cast-in-place pile test. (3) Sampling frequency is Optional of 10 kHz, 20 kHz, 30 kHz and 40 kHz. (4) Sampling points are optional of 1024, 2048 and 4096. Maximum sampling time is up to 400 ms (5) Before test the two accelerometers and two strain transducers are self-checked automatically, determine whether the system is in normal state. (6) Automatically check the static strain deviation of the strain transducer during installation and adjusted to zero before blow. (7) Test data exported through the external u-disk (8) During test every blow can be saved automatically (9) Storage capacity of more than ten thousands blows. (10) HPT can be used for pile driving monitoring and the cast-in-place pile (11) HPT data can save as *.X01(used for PDA-W) (12) The main cable and connecting cable are compatible with the PDA. (13) Built-in lithium battery can be used more than 5 hours continuously. (14) PDAR program carry on CASE method analysis. (15) RCAPWAP program carry on match analysis automatically or manually.

1. Follow the specifications: ASTM D5882 Standard Test Method for Low Strain Integrity Testing of Piles JGJ106-2003 (China) Technical code for testing of building foundation piles 2. Parameters:: 1). Size: 62 * 172 * 225 mm. 2). Weight: 2.0 kg. 3). High-contrast touch screen display. 4). Temperature range: Operating Range: 0° to 40° C; Storage Range: -20° to 65° C. 5). Powered by internal battery (6 hours duration). 3. Functional: 1). The LPT-E is used for Integrity pile testing and judging defect position 2). Automatic data storage 3). Signal amplification capability 4). Data can be averaged over a variable number of blows. 5). Variable signal amplification over time 6). 24-bit A/D converter 7). Sample size: 4k 8). Sample Frequency: 48kHz, 96 kHz,144 kHz

Purpose SYR51+ rebar Location system is used to test rebar diameter, distribution, coating thickness in concrete. Specification JGJ/T152-2008 Performance Longer service life of the Connector Clip: The instrument has long service life because of using Lemo Connector Clip which comes from Swiss and uses for aircraft industry. Good quality of signal cable: The signal cable has long service life because of its flexible and substance. High precision and stability: The instrument can locate the steel-bar accurately and quickly. Longer service life of the sensor: Improve the service life by paste abrasion resistance allowance bottom of the sensor Single sensor: No-change sensor in test, switching between high and low test range can assure the precision of test data and the test depth. Display test information real-time: Display the test data directly to avoid man-made errors. Grid and section scan mode: Instrument can display steel bar distribution and scan steel bar without concrete boundary limited. Three-wheel steel-bar scan system: The system can assure scan path along line and the precision of test data. Powerful Windows data process and analysis software: Software can display analysis result by diagram. Test data can be export to word or Excel easily.

Purpose The instrument is used to test the degree of steel-bar corrosion in electrochemical method. Specification GB50204-2002 Performance 1. Two test mode. The potentiometry and gradient method is used to test steel-bar corrosion which fit for different working field. 2. Permanent reference electrode. Saturated CuSO4 solution is sealed up completely in reference electrode. Field test keeps clean, simple and pollution-free operations. 3. Automatic measure environmental temperature. Instrument design to contain a measure environmental temperature module, it can measure, record and display environmental temperature quickly no thermometers required. 4. Can save test date. Convenient for laborer data management. 5. Display test result intuitively. Display test result used icon mode, The icon color is more dark, the steel-bar corrosion is more serious. User can observe the corrosion degree intuitively. 6. Real USB transmission. Data can be transmitted to computer for future process and analysis. 7. Powerful data process and analysis software in windows. Software can display analysis result by spectrum and isoline. Test data can be export to word or excel easily. Performance 1. Test range: +/-2000 mV 2. Testing accuracy: +/-1 mV 3. Test point distance: 1~ 99cm setting 4. Applicable environmental: Temperature: -10? ~ +40? Dampness: