Tilt Sensors

MEMS In-Place Tilt Meter

The Geosense® MEMS In-Place Tilt Meter measures uniaxial or biaxial tilt, which is measured from the plane(s) perpendicular to the base.

It is designed to be installed in either the vertical or horizontal position by either bonding, bolting or strong magnetic fixing directly to a structure or mounting plate.

The tilt sensors, based on well-established MEMS technology, are mounted within a rugged, heavy-duty waterproof die-cast metal enclosure suitable for the harsh environments found within construction and building industries.

Thermal effects of the MEMS sensor is minimal but in order to compensate for the effects of temperature on the enclosure, mountings and structure, the unit is fitted with an integral thermistor.

The digital RS-485 output signal provides the ultimate in accuracy together with the advantage of being able to create a digital BUS system where all sensors can be linked together and cable quantities significantly reduced.

Each unit is individually calibrated to provide the ultimate in system accuracy and repeatability.

MEMS Analogue Submersible Tilt Meter

Geosense® Submersible Tilt Meters are designed to measure tilt on submerged structures either on a vertical, inclined or horizontal surface.

They consist of highly accurate MEMS sensors mounted in robust watertight stainless steel housing which can be attached to the structure by bolting, bonding or welding.

Each unit is individually calibrated to provide the ultimate in system accuracy and repeatability and can be used in conjunction with a hand held readout, automatic data acquisition system and Wi-SOS to provide a wireless monitoring solution.

MEMS Digital Submersible Tilt Meter

Geosense Submersible Tilt Meters are designed to measure tilt on submerged structures either on a vertical, inclined or horizontal surface.

They consist of highly accurate MEMS sensors mounted in robust watertight stainless steel housing which can be attached to the structure by bolting, bonding or welding.

Each unit is individually calibrated to provide the ultimate in system accuracy and repeatability and can be used in conjunction with a hand held readout, automatic data acquisition system and Wi-SOS to provide a wireless monitoring solution.

MEMS Portable Tilt Meter

Portable MEMS Tilt Meters use a MEMS inclinometer to measure tilt in either one or two axial planes, perpendicular to the surface of the base plate. Depending on the model, the output is an analog DC signal or digital output and is directly proportional to the sine of angle of tilt.

In the horizontal position the DC output is zero. Portable MEMS Tilt Meters require the tilt meter to be placed in a reproducible position on a reference plate attached to the surface being monitored. The portable tilt meter system has a demountable sensor and is designed for applications where a large number of measuring points are to be observed.

Portable MEMS Tilt Meter systems consist of the tilt meter, interconnecting cable, stainless steel tilt plates, and the readout instrument. Tilt plates are bolted or bonded to the structure to accurately, and repeatedly, locate the sensor. 

MEMS Tilt Beam

Geosense® MEMS Tilt Beams are designed for attachment to structures, on either a vertical or horizontal surface, for the measurement of tilt or differential settlement.

They consist of a highly accurate MEMS sensor housed in a fully sealed enclosure which is mounted on a lightweight rigid GRP beam. This can be mounted onto the structure using special anchors. The GRP beam has a very low coefficient of thermal expansion meaning that thermal affects are minimised.

Both ends of the beam are fixed and when multiple beams are placed end to end, a differential displacement profile of the structure from anchor point to anchor point can be derived.

The design of the beam and end fixings means the beam can easily be cut to any length on site to accommodate any unexpected changes or constraints.

Each unit is individually calibrated to provide the ultimate in system accuracy and repeatability. It can be used in conjunction with a hand-held readout, automatic data acquisition systems such as the GeoLogger G8-Plus or the Wi-SOS 480 Digital Node to provide a wireless monitoring solution.

Pendulum System

Geosense HPS-3500 (Hanging)  and IPS-3000 (Inverted) Pendulums are used to measure the tilt or rotation by measuring the relative internal horizontal displacement of points along a true vertical line.  Each has a tensioned, stainless steel wire and the effects of the earth gravitational forces to guarantee a perfectly vertical line between a fixed point and a tensioning mechanism. Typical applications include concrete dams, bridges and high rise buildings.

The HPS-3500 Hanging Pendulum has a fixed point high up in the structure and a heavy weight is used to generate the tension. The weight is submersed in a fluid to damp movements that may be caused by currents of air up through the pendulum shaft.

The IPS-3000 Inverted Pendulum has a fixed point at, or below, the base of the structure and employs a large float in a water filled tank, to generate the tension in the wire.

Measurement of the position of the vertical wire, relative to the structure allows rotation or tilt to be calculated.

Displacements relative to the wire are measured using a manual readout or, for remote reading, the TP-2000 automatic readout is used.

Wi-SOS 480 Tilt Meter

The Geosense® Wi-SOS 480 Wireless Tilt Meter is used for long-range, remote readings in geotechnical monitoring applications.

The tilt meter combines a high-precision biaxial MEMS sensor with a radio transmission network to provide accurate measurements with the benefits of long-range wireless communication and extended battery life.

What makes Wi-SOS 480 different to other wireless systems is the use of data modulation via the Worldsensing G6 Platform which uses the latest LoRa spread spectrum technology. This technology means Long Range, Low Cost, Low Power Consumption and High Connectivity. 

Each unit is individually calibrated to provide the ultimate in system accuracy and repeatability.

Several hundred Wireless Tilt Meters can be supported by one Gateway in the same network and it can also be used as a stand-alone logger for manual monitoring, capable of storing up to 200,000 readings. 

It can easily be configured and connected with a USB cable and an Android device. Connectivity to the Gateway can be checked in the field and its global location displayed via the Wi-SOS WebCentre.

EL In-Place Tilt Meter

The Geosense® Digital EL In-Place Tilt Meter measures uniaxial or biaxial tilt, which is measured from the plane(s) perpendicular to the base.

It is designed to be installed in either the vertical or horizontal position by either bonding, bolting or strong magnetic fixing directly to a structure or mounting plate.

The tilt sensors, based on well-established Electrolytic technology, are mounted within a rugged, heavy-duty waterproof die-cast metal enclosure suitable for the harsh environments found within construction and building industries.

In order to compensate for the effects of temperature on the enclosure, mountings and structure, the unit is fitted with an integral thermistor.

The digital RS-485 output signal provides the ultimate in accuracy together with the advantage of being able to create a digital BUS system where all sensors can be linked together and cable quantities significantly reduced.

Each unit is individually calibrated to provide the ultimate in system accuracy and repeatability.