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Tiltmeters · Pendulums

Pendulum System | Model 6850

Pendulum System Electronic Readout.
  • Pendulum System Electronic Readout.
  • Direct Pendulum System with optional Optical Manual Readout.
  • Closeup of Pendulum Optical Manual Readout with LED light beam.
  • Closeup of Pendulum Optical Manual Readout with LED light beam.
  • Direct Pendulum System schematic.
  • Pendulum Optical Manual Readout with LED light beam schematic.
  • Inverted Pendulum System schematic.
  • Model 6850 Pendulum Readout installation in dam gallery.
SKU:
Model 6850

The Model 6850 Pendulum System is designed to make accurate measurements of horizontal deflections in two directions (2D models), and changes in the vertical distance between the top suspension point of the wire and the readout location (3D models). The system is suitable for measuring the tilting of large structures such as dams, high-rise buildings, and bridges. The direct pendulum system includes a pendulum weight, hanger, damping tank, measurement table, and readout. The inverted pendulum system includes a pendulum anchor, float tank and float, measurement table, and electronic readout.. The electronics package provides both 4-20 mA and EIA RS- 485 data outputs. The data can be stored locally, or remotely, with the 8600 Series Dataloggers, or other dataloggers, and thence by hard-wire or modem to a PC. Two 2-D models are available: 50×50 mm and 50×100 mm; and one 3-D model: 50×100×50 mm. A Pendulum Optical Manual Readout with LED light beam, that’s secured to a wall (Model 6850-9) or mounted to a table (Model 6850-10), is also available where automated systems are not necessary, or where a manual reading back-up is required.

Specifications

Standard Range
(2-D) X axis: 0-50 mm, Y axis: 0-50 mm
(2-D) X axis: 0-50 mm, Y axis: 0-100 mm
(3-D) X axis: 0-50 mm, Y axis: 0-100 mm, Z axis: 0-50 mm
(2-D, Optical Manual) X axis: 0-50 mm, Y axis: 0-50 mm
Resolution
0.01 mm
0.1 mm (2-D, Optical Manual)
Accuracy
better than 0.1 mm
0.2 mm (2-D, Optical Manual)
Operating Temperature
−15°C to +60°C
L × W × H
(2-D) 380 × 330 × 145 mm
(2-D) 425 × 375 × 190 mm
(3-D) 425 × 375 × 190 mm
(2-D, Optical Manual) 356 × 356 × 100 mm

Please Note: GEOKON maintains an ongoing policy of design review and reserves the right to amend products and specifications without notice. Various instruments are discontinued over time and replaced with new, updated models.

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