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Product Description
Technical Data Sheet
| SN. | Item | Parameter |
| 1 | Borehole measuring range | |
| 1.1 | Standard configuration | Ф500mm～Ф1600mm（JJY-2） |
| 1.2 | Users can select | |
| | A.Install a 200mm extra arm on the original detecting arm to expand the measuring range to maximum Ф2000mm on base of standard configuration. | |
| | B.Ф1500mm～Ф2500mm（JJY-5） | |
| | C.Install a 770mm extra arm on the original detecting arm to expand the measuring range to maximum Ф2800mm on base of B. | |
| 2 | Precision of borehole measurement | ±15mm（JJY-2）, ±25mm（JJY-5） |
| 3 | Electric current supply for borehole diameter measuring probe: 10mA | |
| 4 | Sensitivity of borehole diameter measuring probe | ≥100mV/10cm (When the electric current supply is 10mA) |
| 5 | Cable length | 100m(125m is optional,maximum) |
| 6 | Cable tensile force | 0.35t(The tear-out force is 0.65t) |
| 7 | It has a standard format of measurement report for selection. | |
| 8 | The notebook PC can meet requirements for saving data. | |
