Photo of Model 6160.

MEMS Tiltmeter

Model 6160

The Model 6160 MEMS Tiltmeter is designed for attachment to structures, on either a vertical or horizontal surface by means of an adjustable bracket, and for the subsequent measurement of any tilting that may occur. The tiltmeter itself contains a Micro-Electro-Mechanical Sensor and associated signal conditioning, designed to drive long cables without output signal degradation. The sensor has excellent reliability and stability over time and temperature, and outstanding shock and overload durability.

Specifications
Standard Range¹ ±15°
Resolution ±0.01 mm/m (±2 arc seconds)
Accuracy² ±0.1% F.S.
Shock Survival 2000 g
Temperature Range −20°C to +80°C
Length × Diameter 139 × 32 mm (transducer only)

¹Other ranges available on request.

²Established under laboratory conditions.

Photo of Model 8101 shown with optional mounting plate.

MEMS Tiltlogger

Model 8101

The Model 8101 MEMS Tiltlogger comprises the same MEMS tiltmeter/signal conditioner used with the Model 6160 MEMS Tiltmeter. The tiltlogger is housed inside a rugged Nema 4X enclosure with a lithium battery power supply, one (uniaxial) or two (biaxial) 16 bit low level voltage loggers and a miniature standalone temperature logger. The loggers are capable of storing 37,767 readings and operate from 3.6 V lithium batteries with a 1 year battery life. Windows®-based software provides multiple graphing capability and real-time recording allowing data to be displayed while continuing to log.

Specifications
Voltage Range −0.25 to +2.75 V
Voltage Resolution

0.1 mV
Calibrated Accuracy ±0.01% F.S. (Tilt), ±0.5°C (Temperature)
Temperature Resolution 0.1°C
Temperature Range −40°C to +80°C
L × W × H 122 × 122 × 81 mm

Photo of Model 6201.

Portable Tiltmeter

Model 6201

The Model 6201 Tiltmeter is a portable device designed to measure tilt in structures such as buildings, dams and embankments and also for measurements related to the stability of slopes, open pits and the walls of excavations (e.g. slurry walls). The tiltmeter is placed on a tiltplate which has been permanently attached (either vertically or horizontally) to the structure to be monitored. The readings are taken in pairs, 180° to each other, to eliminate instrument bias. The sensor is used in conjunction with the GK-603 or GK-651 Readout Box and ceramic or stainless steel tilt plates.

Specifications
Standard Range ±30°
Resolution ±0.05 mm/m (±10 arc seconds)
Accuracy ±0.1% F.S.
Output @30° ±5.00 VDC
Shock Survival 1000 g
Temperature Range 0°C to +50°C
L × W × H 159 × 89 × 143 mm

Photo of Model 6350.

Vibrating Wire Tiltmeter

Model 6350

The Model 6350 VW Tiltmeter is designed to measure tilt in structures such as buildings, dams and embankments and also for measurements related to the stability of slopes, open pits and the walls of excavations (e.g. slurry walls). The tiltmeter is permanently attached to the structure to be monitored and can make measurements on horizontal or vertical surfaces. Readings are taken with the Model GK-403 VW Readout Box or continuously and remotely with the Micro-1000 or 8002 dataloggers.

Specifications
Standard Range¹ ±10°
Resolution ±0.05 mm/m (±10 arc seconds)
Accuracy² ±0.1% F.S.
Temperature Range −20°C to +80°C
Length × Diameter 139 × 32 mm (transducer only)

¹Other ranges available on request.

²Established under laboratory conditions.

Photo of Model 6700.

Electrolytic Tilt Sensors

Model 6700

The Model 6700 is designed to measure angular displacement in structures such as dams, buildings, tunnels, embankments and retaining walls. It is an easy-to-install, low-cost alternative to accelerometer based tilt sensors, settlement systems and surveying. Horizontal and vertical configurations are available to measure differential vertical displacements and tilt. The sensors may be monitored remotely or read with the Geokon Model RB-201 portable readout box.

Specifications
Standard Ranges ±15 arc minutes, ±1°, ±3°
Resolution

0.03% F.S.
Repeatability 0.3% F.S.
Maximum Thermal Error 0.2% F.S./°C
Sensor Impedance 12 kΩ
Temperature Range −20°C to +80°C
Beam Length¹ 1 or 2 m

¹Other lengths available on request.

Photo of Model 6850.

Pendulum System

Model 6850

The Model 6850 Pendulum System is designed to make accurate measurements of the relative movements of normal and inverted pendulums, such as those found in dams, and can be installed as a new system or as an electronic upgrade for an existing system. The electronics package provides both 4-20 mA and EIA RS-485 data outputs. The data can be stored locally or remotely in a Geokon Micro-1000 Datalogger, or other dataloggers, and thence by hard-wire or modem to a computer (IBM PC). Two 2-D models are available: 50×50 mm and 50×100 mm; and one 3-D model: 50×100×50 mm.

Specifications
Standard Range

X axis: 0-50 mm, Y axis: 0-50 mm

X axis: 0-50 mm, Y axis: 0-100 mm

X axis: 0-50 mm, Y axis: 0-100 mm, Z axis: 0-50 mm
Resolution

0.01 mm
Accuracy better than 0.1 mm
Operating Temperature −15°C to +60°C
L × W × H

(2-D) 380 × 330 × 145 mm, 425 × 375 × 190 mm

(3-D) 425 × 375 × 190 mm

Products

Please Note: Geokon maintains an ongoing policy of design review and reserves the right to amend products and specifications without notice.