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Tiltmeters · Pendulums

GeoNet Wireless Mesh Tilt Loggers | 8800 · 8900 Series Tilt Loggers

The Model 8800 (left) and 8900 (right) self-contained Mesh Tilt Loggers.
  • The Model 8800 (left) and 8900 (right) self-contained Mesh Tilt Loggers.
  • The Model 8800 and 8900 Cellular Gateway (left, Model 8900 pictured) is used to control the network, collect all sensor data from any tilt loggers (and other network loggers) deployed and seamlessly connect to the cloud server and hosted data platform. The Model 8800 and 8900 Local Gateway (right, Model 8900 pictured) provides the same network capabilities, but without cloud integration for secure, localized access to your sensor data.
  • Typical GeoNet network, with line-of-site obstructions.
  • GEOKON Agent Software screenshot showing live data charts.
SKU:
8800 · 8900 Series Tilt Loggers

The 8800 and 8900 Series Mesh Tilt Loggers combine the capabilities of a biaxial tiltmeter with a wireless GeoNet Mesh Logger. The self-contained tilt loggers are attached to various structures including dams, embankments, foundation walls, retaining walls, buildings, etc., and provide wireless measurement of any tilting that may occur. Remote access of sensor data is achieved via the Cellular Gateway,¹ which controls the mesh network and collects sensor data from any tilt loggers deployed. A Local Gateway, without cellular capabilities or cloud integration, provides the same control over the network to allow secure, localized access to your sensor data.

Seamless and secure cloud integration is achieved with GEOKON OpenAPI. The GEOKON OpenAPI portal is easy-to-use and allows users to activate loggers, change settings, configure sensor channels, and view current logger status. Industry leading data visualization software, such as Vista Data Vision, or the no-cost GEOKON Agent Software, can be used with GEOKON OpenAPI for data viewing and reporting.

For more information about the full complement of GeoNet Wireless Mesh Loggers, please see the GeoNet 8800 and 8900 Series.

8900 Series

8800 Series

¹GeoNet Cellular Gateways are compatible with all major networks except Verizon.

Specifications

Topology
Star/Mesh/Cluster Tree (Automatic)
Radio Frequency, ISM Band
902-928 MHz (North America)
902-906, 915-928 MHz (Brazil)
915-928 MHz (Australia, Chile, Peru)
863-870 MHz (Europe)
Range¹
8900 | Up to 60 km (15 km × 4 hops) (North America, Brazil)
8900 | Up to 22 km (5.5 km × 4 hops) (Europe)
8800 | Up to 26 km (6.5 km × 4 hops) (all models)
Tilt Range²
±90°
Resolution³
±0.00025° (±0.004 mm/m)
Precision⁴
±0.0075° (±0.13 mm/m)
Data Memory
32 MB
Storage Capacity
500,000 readings
Power Supply
D Cell, Alkaline or Lithium (2×), or 12V External
Operating Temperature
−40 °C to +65 °C (−40 °F to +149 °F)
(range varies by power source)
L × W × H
120 × 122 × 91 mm

¹Outdoor, clear line-of-sight, maximum 4 hops.

²Calibrated range: ±30°

³99% confidence interval (i.e. 99 out of 100 individual readings fall within this tolerance).

⁴99% confidence interval. Includes random walk (changes between consecutive readings that have no discernible cause) and seismic noise during testing.

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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