New 650°C Accelerometer from PCB Piezotronics eliminates
noise spikes
PCB Piezotronics,
a world leader in vibration, acoustic, pressure, force and torque
sensors has announced a new crystal technology being used in
high temperature applications called Ultra High Temperature 650°C
(1200°F) or UHT-12™ (http://www.pcbpiezotronics.co.uk/UHT).
Accelerometers designed with UHT-12™ make measurements with
better accuracy and lower noise over large temperature profiles.
"This new development solves the gas turbine manufacturers'
problems with ceramic based sensors known as pyroelectric noise,"
said Bob Metz, PCB's Director of Aerospace & Defense. "The
material also has the ability to operate in shear mode, isolating
the accelerometer from thermal influences and base strain errors."
UHT-12™ technology allows accelerometers to be insensitive
to temperature variations. This is ideal for applications such
as test and monitoring vibration of gas turbine engines (both
in-flight and in test cells), rocket motors and thruster assemblies,
turbocharger and exhaust system test and engine balancing.
PCB's UHT-12™ family comprises ICP® and charge output
accelerometers including models 320C52, 357D90, 357D91, EX611
and series 339. The new high temperature crystal technology has
also been adapted to pressure sensor series 115 and 176.
UHT-12™ technical advantages include elimination of pyroelectric
noise spikes up to 650°C/1200°F, consistent sensitivity
over a wider temperature range and isolation of the crystal from
base strain and transverse measurement errors.
April 2015
