(MEMS) Tiltmeters, Portable Tiltmeters, Electrolytic Tilt Sensors, Pendulum Systems and MEMS Tiltmeters

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.

Data Sheet ›

Portable MEMS Tiltmeter

Model 6101

The Model 6101 MEMS Tiltmeter is a low-cost, 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 sensing element is a highly accurate MEMS tilt sensor, which is practically immune to shock. The unit is compatible with most inclinometer readouts.

Specifications
Full Scale Range	±15°
Resolution	±0.05 mm/m (±10 arc seconds)
Accuracy¹	±0.02% F.S.
Output @15°	4 VDC (nominal)
Shock Survival	20,000 g
Temperature Range	0°C to +50°C (operating), −25°C to +70°C (storage)
L × W × H	159 × 89 × 143 mm
¹Established under laboratory conditions.

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)
Accuracy¹	±0.02% 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
¹Established under laboratory conditions.

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 (8 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.

6165 MEMS Tilt Beam.

MEMS Tilt Beam

Model 6165

The Model 6165 MEMS Tilt Beam is designed for attachment to structures, on either a vertical or horizontal surface, for the measurement of any tilting or differential settlements that may occur. The Tilt Beams can be coupled together in long horizontal strings to measure differential settlement along embankments, railroad tracks, pipelines, tunnels, etc., or they can be used in vertical strings to measure the horizontal deformation of retaining walls, sheet piling, etc. Readout is accomplished by using a Geokon Model RB-500 MEMS Readout Box, or the Model 8021 Micro-1000 Datalogger or Model 8025 Micro-800 Datalogger.

Specifications
Standard Range¹	±15°
Resolution	±0.01 mm/m (±2 arc seconds)
Input	8-15 VDC
Output	280 mV/°
Output Impedance	55 Ω
Temperature Range	−20°C to +80°C
Beam Length	1029 mm (standard, aluminum version)
¹Other ranges 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
Strain Gages Strainmeters Jointmeters Strandmeters Crackmeters Convergence Meters Displacement Meters Displacement Transducers Extensometers Anchors Settlement Points Readout Instruments Tape Extensometers Magnetic Extensometers	Piezometers Casagrande Piezometer Tip Pressure Transducers Weir Monitors Settlement Sensors Earth Pressure Cells Concrete Stress Cells Load Cells Instrumented Rockbolts Tension Load Cells Inclinometer Probes Inclinometer Software In-Place Inclinometers Inclinometer Casing	Tiltmeters Tiltloggers Tilt Beams Pendulum Systems Readout Boxes Terminal Boxes Surge Modules Dataloggers and Software Multiplexers Frequency to Analog Converters	Borehole Pressure Cells Stressmeters Stress Cells Borehole Deformation Gages DeAerators Semiconductor Piezometers Thermistors Temperature Sensors Cables Custom Design Product Applications Discontinued Products

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.