DEX and DEX-S 3D extensometer
- In-place extensometers are used in conjunction with flush-coupled ABS inclinometer casing for the measurements of settlement or heave.
- Sisgeo DEX Extensometers And DEX-S Extenso-Inclinometer designed to be left inside the casing to permit automatic or continuous monitoring.
- Strings of in-place extensometer sensors are joined together with stainless steel wire.
- The sensors can be located at different depths where the settlement occurs.
- Equipped with biaxial tilt sensor is also available for 3-D borehole profile monitoring.
- ADK-10 datalogger provides automatic monitoring and by means of GSM module it is also possible to have on-line monitoring of unattended locations.
| PRODUCT CODES | 0DEX35S115D | 0DEX35S130D |
| SETTLEMENT SENSOR | ||
| Sensor type | high performance contactless displacement transducer | high performance contactless displacement transducer |
| FS and Measuring range | 100 mm (±50 mm) | 100 mm (±50 mm) |
| Sensor resolution (with OMNIAlog datalogger) | 0.0001mm (with OMNIAlog datalogger) | 0.0001mm (with OMNIAlog datalogger) |
| Sensor repeatability | 0.007 mm | 0.007 mm |
| Sensor 24 hours stability (1) | ±0.06 mm | ±0.06 mm |
| Sensitivity (2) | See Calibration Report | See Calibration Report |
| Sensor accuracy: Lin. MPE(3) | < ±0.30% FS (< ±0.30mm) | < ±0.30% FS (< ±0.30mm) |
| Sensor accuracy:Pol. MPE (3) | < ±0.25% FS (< ±0.25mm) | < ±0.25% FS (< ±0.25mm) |
| TILT SENSOR | ||
| Sensor type | biaxial MEMS inclinometer | biaxial MEMS inclinometer |
| Measuring range | ±10°, ±15° | ±20°, ±30° |
| Sensor resolution | 0.00056° (reading frequency 2 Hz) | 0.00056° (reading frequency 2 Hz) |
| Sensor mechanical bandwidth | 18 Hz | 18 Hz |
| Sensor repeatability | 0.002° | 0.002° |
| Sensitivity (2) | See Calibration Report | See Calibration Report |
| Sensor accuracy: Lin. MPE(3) | < ±0.030% FS | < ±0.100% FS |
| Sensor accuracy:Pol. MPE (3) | < ±0.015% FS | < ±0.020% FS |
| Sensor 24 hours stability (1) | < ±0.07 mm / m (A-axis) | < ±0.07 mm / m (A-axis) |
| Offset temperature dependancy | ±0.002° / °C | ±0.002° / °C |
| TEMPERATURE SENSOR (4) | Embedded on electronic board | Embedded on electronic board |
| Measuring range | - 40°C to +125°C | - 40°C to +125°C |
| Accuracy | ±1°C with temperature range -10°C to +85°C | ±1°C with temperature range -10°C to +85°C |
| HUMIDITY SENSOR (4) | Embedded on electronic board | Embedded on electronic board |
| Measuring range | 0 to 100% RH | 0 to 100% RH |
| Accuracy | ±5% RH with humidity range 0 to 95% RH | ±5% RH with humidity range 0 to 95% RH |
| SUPPLY VOLTAGE MONITOR (4) | Embedded on electronic board | Embedded on electronic board |
| Measuring range | 0 to 36 V | 0 to 36 V |
| Accuracy | ±5% FS | ±5% FS |
| ELECTRICAL INFORMATION | ||
| Signal output | RS-485 with Modbus RTU protocol (5) | RS-485 with Modbus RTU protocol (5) |
| Power supply | from 12 to 24 V dc - default powering set up is TIMED (6) | from 12 to 24 V dc - default powering set up is TIMED (6) |
| Average consumption | 70 mA @ 24 Vdc, 145 mA @ 12 Vdc | 70 mA @ 24 Vdc, 145 mA @ 12 Vdc |
| Max cable length to logger | 1000 m (for more information see F.A.Q.#077 on Sisgeo web site) | 1000 m (for more information see F.A.Q.#077 on Sisgeo web site) |
| PRODUCT CODES | 0DEX350100D | 0DEX350500D | 0DEX351000D |
| SETTLEMENT SENSOR | |||
| Sensor type | high performance contactless displacement transducer | high performance contactless displacement transducer | high performance contactless displacement transducer |
| FS and Measuring range | 100 mm (±50 mm) | 500 mm (±250 mm) | 1000 mm (±500 mm) |
| Sensor resolution (with OMNIAlog datalogger) | 0.0001 mm | 0.0001 mm | 0.0001 mm |
| Sensor repeatability | 0.007 mm | N/A | N/A |
| Sensor 24 hours stability (1) | ±0.06 mm | N/A | N/A |
| Sensitivity (2) | See Calibration Report | See Calibration Report | See Calibration Report |
|
Sensor accuracy: Lin. MPE(3) Pol. MPE(3 |
< ±0.30% FS (< ±0.30 mm) < ±0.25% FS (< ±0.25 mm) |
< ±0.10% FS (< ±0.5 mm) < ±0.08% FS(< ±0.4 mm) |
< ±0.10% FS (< ±1.0 mm) < ±0.08% FS(< ±0.8 mm) |
| TEMPERATURE SENSOR (4) | Embedded on electronic board | Embedded on electronic board | Embedded on electronic board |
| Measuring range | - 40°C to +125°C | - 40°C to +125°C | - 40°C to +125°C |
| Accuracy | ±1°C with temperature range -10°C to +85°C | ±1°C with temperature range -10°C to +85°C | ±1°C with temperature range -10°C to +85°C |
| HUMIDITY SENSOR (4) | Embedded on electronic board | Embedded on electronic board | Embedded on electronic board |
| Measuring range and accuracy | 0 to 100% RH / ±5% RH (within 0 to 95% RH) | 0 to 100% RH / ±5% RH (within 0 to 95% RH) | 0 to 100% RH / ±5% RH (within 0 to 95% RH) |
| SUPPLY VOLTAGE MONITOR (4) | Embedded on electronic board | Embedded on electronic board | Embedded on electronic board |
| Measuring range and accuracy | 0 to 36 V / ±5% FS | 0 to 36 V / ±5% FS | 0 to 36 V / ±5% FS |
| ELECTRICAL INFORMATION | |||
| Signal output | RS-485 with Modbus RTU protocol (5) | RS-485 with Modbus RTU protocol (5) | RS-485 with Modbus RTU protocol (5) |
| Power supply | from 12 to 24 V dc - default powering set up is TIMED (6) | from 12 to 24 V dc - default powering set up is TIMED (6) | from 12 to 24 V dc - default powering set up is TIMED (6) |
| Average consumption | 68 mA @ 24 Vdc, 140 mA @ 12 Vdc | 68 mA @ 24 Vdc, 140 mA @ 12 Vdc | 68 mA @ 24 Vdc, 140 mA @ 12 Vdc |
| Max cable length to logger | 1000 m (for more information see F.A.Q.#077 on Sisgeo web site) | 1000 m (for more information see F.A.Q.#077 on Sisgeo web site) | 1000 m (for more information see F.A.Q.#077 on Sisgeo web site) |
