Bruel & Kjaer - Endevco - PRODUCT NEWS

 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. _________________________________________________ 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: Web site: December 2000