GeoSIG breva Biaxial Tiltmeter
DATA SHEET
Overview
GeoSIG's breva is a biaxial tiltmeter featuring a high resolution and a shock resistant-sensor with long term stability. It measures the angle, slope, or tilt in two orthogonal directions for use in various applications.
Key Features
- Measures static and dynamic tilt
- Senses in positive and negative directions
- Large output span of -10V to +10V output over the measuring range
- Shock resistance more than 20'000 g
- High repeatability < 0.01% over range
- High resolution < 0.001% over range
- Built-in three-point leveling screws for easy installation
Applications
- Structural Health and Response Monitoring
- Geotechnical (slope stability)
- Platform / Rig / Track alignment
Specifications
Sensor Element
| Measuring range: | ±3° |
| Resolution (at 0°, +20° C): | < 0.001°/Hz |
| Repeatability (at 0°, +20° C): | < 0.01° (mg) |
| Noise: | 0.0004° |
| Measuring direction: | X and Y Axes |
| Cross axis sensitivity: | 4% |
| Damping: | 18 Hz |
| Shock resistance: | 20'000 g |
| Output signal: | ±10 V |
| Offset = Vout in 0°: | 0 V |
| Temperature dependancy: | < 0.003 °C |
Power
| DC power supply: | 9.7 - 15 VDC, protected by OVP |
Environment / Housing
| Housing type: | Cast aluminium, sealed access cover |
| Housing size: | 195 x 112 x 95 mm |
| Index of protection: | IP65 optional IP68 |
| Operational temperature: | -30 °C to +85 °C |
| Storage temperature: | -30 °C to +85 °C |
| Humidity: | 0% to 100% (non-condensing) |
| Orientation: | Floor mounted |
| Mounting: | Single bolt, surface mount, adjustable within ± 3° |
Additional Specifications (AC Series Accelerometers)
Note: The following specifications pertain to related AC series accelerometers mentioned in the document.
General Characteristics
| Power Supply Voltage: | 12 VDC regulated (10 to 15 V) |
| Consumption: | 26 mA typical, 140 mA max. @ 15 VDC |
| Overvoltage Protection: | All pins are protected. |
| Connector: | 7-8 pin Binder / Binder reversible connector. |
| Auxiliary input: | Digital test-pulse |
| Shielded Ground: | HP pin 9-10 |
Configurations
- AC-23 / AC-22 / AC-21 Accelerometer
- AC-23-HV or AC-23i-V
- AC-22-HV or AC-22i-V
- AC-21-HV or AC-21i-V
Applications
- Strong Motion earthquake survey
- Industrial applications requiring high acceleration measurement
Options
- Standard AC-23: Floor mounted, Full scale ±2 g, 2 m cable with cable inlet and connector, concrete anchor bolt and user manual on CD.
- Options: mating connector, user manual on CD.
Diagrams and Plots
A blue GeoSIG breva Biaxial Tiltmeter is shown mounted on a surface, set against a backdrop of a majestic mountain landscape.
Technical drawing showing the breva tiltmeter with dimensions 195 x 112 x 95 mm, indicating mounting hole locations.
Side view technical drawing illustrating the mounting mechanism and connector.
Top view technical drawing showing the tiltmeter's footprint and mounting points.
Close-up technical drawing of the connector pinout.
Frequency response plot for VE series tiltmeters, showing Displacement [mm] versus Acceleration [g] for models VE-1x and VE-2x.
Frequency response plot for VE series tiltmeters, showing Displacement [mm] versus Acceleration [g] for models VE-1x, VE-2x, VE-3x, VE-5x, VE-5x-BB, VE-5x-DIN, and VE-150x-2BB.
Frequency response plot for AC series accelerometers, showing Acceleration [g] versus Frequency [Hz] for models AC-2x, AC-4x, AC-6x, and AC-7x.
Frequency response plot for VE series tiltmeters, showing Acceleration [g] versus Frequency [Hz] for models VE-1x, VE-2x, VE-3x, VE-5x, VE-5x-BB, VE-5x-DIN, and VE-150x-2BB.
