Portable Accelerometer Calibrator
PORTABLE ACCELEROMETER CALIBRATOR FROM
ENDEVCO NOW TESTS PIEZORESISTIVE AND VARIABLE
CAPACITANCE DEVICES
Endevco has announced a new version of its portable accelerometer
calibrator that features an option enabling testing of piezoresistive (PR)
and variable capacitance (VC) type devices.
Model 28959E is designed to provide precision calibration of various
accelerometer types in the field and is ideal for test engineers and
technicians needing on-site end-to-end calibration of their complete
measurement chain.
With a built-in charge converter and constant current source, the
calibrator is designed to accept charge and voltage mode (ISOTRON®)
piezoelectric (PE) accelerometers directly with an optional external
signal conditioner available to enable calibration of PR and VC devices.
The model 28959E is a self-contained system that includes built-in
vibration exciter, signal generator, computer-controlled amplifier/servo
mechanism, reference accelerometer, thermal printer, RS232
serial interface, LCD screen and all necessary connectors and
mounting accessories. The unit can be powered by AC mains
voltage or internal rechargeable batteries (supplied).
Designed to be user-friendly for easy operation even by inexperienced
users, the unit is also exceptionally powerful. Special features
include automatic calculation of sensitivity, verification of accelerometer
polarity, help screens to assist operators, hard copy output from
built-in printer and storage and display of serial number, type,
test parameters, date/time and test results.
Test amplitude is adjustable up to 10g's over the frequency range
3Hz to 10kHz. An internal reference accelerometer traceable to
NIST serves as the comparison standard. Internal memory stores
over 1600 test results and sensitivity can be displayed in either
imperial or metric engineering units. An automatic self-test and
self-calibration function ensures measurement integrity every time
the unit is switched on.
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More information from:
Bruel & Kjaer, Bedford House, Rutherford Close,
Stevenage, Hertfordshire, SG1 2ND. UK
Tel: +44(0) 1438 739000, Fax: +44(0) 1438 739099
E-mail: info@bkgb.co.uk
Web site: http://www.bksv.com/
December 2000