Overview

JJX-4SDisplacement measuring instruments are used for monitoring horizontal displacement of rock and soil foundations. Widely used in water conservancy engineering, mining construction, port construction, and urban construction. It can also be used for monitoring the displacement of mountain slopes, providing information for geological hazard prediction. The instrument uses a gravity acceleration sensor to analyze and calculate the horizontal displacement changes of the foundation by monitoring the slope changes of the observation hole. The instrument has the characteristics of high sensitivity, accurate observation, and easy use.

Main technical indicators

Main technical performance

A. Probe (downhole instrument) section

1. Displacement measurement range:0±130mm/500mm, i.e. measurement range of tilt angle:0±15º

2. Resolution:0.01mm/500mm, i.e. inclination angle:4″

3. precision0.025%FS

4. Overall dimensions:Φ34×800mmDistance between guide wheels500mm

5. Applicable inclinometer catheter specifications:Φ60~Φ100mm

6. Applicable hole depth:<120m(1.2Mpa)

7. Weight:≤3kg

8. Cable:Φ10.5mm,long30m(Standard)4Core cable

9. Electricity usage:12V，≤250mA

10. Signal output: Manchester digital encoded signal

B. Ground instrument section

1. Power supply: built-in12V 183WhRechargeable maintenance free battery

2. Charging power supply:12.6V 2A

3. Measurement method: LCD screen displays digital direct reading(Optional remote control measurement)

4. Data storage: flash memory, non power loss mode（10Year)

5. Communication interface:USB

6. Probe power supply:12V，250mA

7. Overall dimensions:300×250×180mm(Length x Depth x Height)

8. Weight:<5kg

9. Suitable environment:-20~+50℃

10. Adequate battery life:8hour

C. Software

1. Processing and outputdepth-displacementhistorical curve

2. Printing of Results Chart

3. ExcelTable output