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Force balance sensors - accelerometers and tilt sensors
Unlike conventional accelerometers, the force balance type contains a freely suspended
mass, in terms of a pendulum (i.e., force generator) , constrained by an electrical
equivalent mechanical spring. Additionally the sensor also contains a position detector
and an amplifier. The output of the sensor is a measure of the current through the force
generator, this current being proportional to the restoring force which is equal and
opposite to the input force. The force balance accelerometer offers significant
performance and accuracy advantages in applications requiring an accuracy in excess of
0.1%.
mass, in terms of a pendulum (i.e., force generator) , constrained by an electrical
equivalent mechanical spring. Additionally the sensor also contains a position detector
and an amplifier. The output of the sensor is a measure of the current through the force
generator, this current being proportional to the restoring force which is equal and
opposite to the input force. The force balance accelerometer offers significant
performance and accuracy advantages in applications requiring an accuracy in excess of
0.1%.
The force balance sensor is intended for DC and low frequency acceleration measurements, such as those encountered in
the motion of vehicles, aircraft, ships and seismic events. These sensors are capable of measuring levels from as low as
0.0001g up to 200g over a frequency range from DC to 1000 Hz. These products work exceedingly well as seismic detectors
for instance. In addition, due to their inherent sensitivity to gravity, they can easily be made into excellent inclinometers or tilt
sensors with some modifications. This type of sensor is most useful in applications such as platform leveling, gun sight
control, bore hole mapping and other low level seismic measurements. The Columbia Research Lab's force balance
accelerometers are available in single, dual and triple axis configurations, miniatures models for airborne purposes, +28
VDC supply, 4 - 20 mA output and ultra low noise for seismic event monitoring. Special accelerometer versions are also
made to withstand high shock and vibration, hermetically sealed units, settable acceleration switches and devices to
measure angular acceleration. The inclinometers or tilt sensors are equally manufactured with waterproof housings, 4 - 20
mA outputs and dual axis to measure inclination in two planes.
the motion of vehicles, aircraft, ships and seismic events. These sensors are capable of measuring levels from as low as
0.0001g up to 200g over a frequency range from DC to 1000 Hz. These products work exceedingly well as seismic detectors
for instance. In addition, due to their inherent sensitivity to gravity, they can easily be made into excellent inclinometers or tilt
sensors with some modifications. This type of sensor is most useful in applications such as platform leveling, gun sight
control, bore hole mapping and other low level seismic measurements. The Columbia Research Lab's force balance
accelerometers are available in single, dual and triple axis configurations, miniatures models for airborne purposes, +28
VDC supply, 4 - 20 mA output and ultra low noise for seismic event monitoring. Special accelerometer versions are also
made to withstand high shock and vibration, hermetically sealed units, settable acceleration switches and devices to
measure angular acceleration. The inclinometers or tilt sensors are equally manufactured with waterproof housings, 4 - 20
mA outputs and dual axis to measure inclination in two planes.
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Force balance accelerometers
Inclinometer / tilt sensor
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| Leading Edge Management LLC P.O. Box 207, Ellicott City, Maryland 21041 Phone: 410-747-1120; Fax: 410-747-1170; Email: info@leadingedgemgt.net |
“Focused on improving your measuring”™
Copyright © 2008 Leading Edge Management LLC All rights reserved.
Columbia Research Laboratories manufactures a broad variety of
sensors and associated signal conditioning electronics that include
force balance inertial-grade accelerometers and inclinometers,
piezoelectric vibration and pressure sensors, strain gage aircraft
mainframe fatigue sensors, precision linear variable differential
transducers, and fiber optic sensors.
Every year since 1957, Columbia transducers and systems have been
flight-qualified and performance proven on major United States
Government military programs, in-flight missile systems and/or
interplanetary manned and unmanned space vehicles. Columbia
transducers and systems have been subjected to the most technically
demanding in-flight qualification test requirements for performance
and reliability under some of the most severe environmental
conditions. In addition, Columbia transducers are used extensively in
industrial control and monitoring systems, where rugged construction
and long accurate performance life are the criteria.
sensors and associated signal conditioning electronics that include
force balance inertial-grade accelerometers and inclinometers,
piezoelectric vibration and pressure sensors, strain gage aircraft
mainframe fatigue sensors, precision linear variable differential
transducers, and fiber optic sensors.
Every year since 1957, Columbia transducers and systems have been
flight-qualified and performance proven on major United States
Government military programs, in-flight missile systems and/or
interplanetary manned and unmanned space vehicles. Columbia
transducers and systems have been subjected to the most technically
demanding in-flight qualification test requirements for performance
and reliability under some of the most severe environmental
conditions. In addition, Columbia transducers are used extensively in
industrial control and monitoring systems, where rugged construction
and long accurate performance life are the criteria.
Linear accelerometer
Linear accelerometer
Linear accelerometer switch
Angular accelerometers
Biaxial linear accelerometer
Triaxial linear accelerometer
Tilt sensor or inclinometer
Biaxial inclinometer
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