Model 2229C Piezoelectric accelerometer Features • Ground isolated • Top connector • Stud mounted • Requires no external power • Vibration measurement on small structures The Endevco® model 2229C is a miniature, stud mounted piezoelectric accelerometer designed specifically for vibration measurement on small structures and objects. The transducer features a top-mounted 10-32 receptacle for installation convenience in tight space. Its light weight (4.9 gm) effectively minimizes mass loading. The accelerometer is a self-generating device that requires no external power source for operation. The model 2229C features Endevco’s Piezite® type P-8 crystal element, operating in annular shear mode. This device exhibits excellent output sensitivity stability over time. Signal ground is isolated from the mounting surface of the unit. A low-noise, flexible, coaxial cable is supplied for error-free operation. Endevco signal conditioner models 133, 2771C, 2775B or Oasis 2000 computercontrolled system are recommended for use with this high impedance accelerometer. TYPICAL TEMPERATURE RESPONSE TYPICAL CAPACITANCE MATES WITH ENDEVCO 3000 SERIES CABLES WITH 10-32 UNF-2B CONNECTOR UNIT IDENTIFICATION TEMPERATURE oF ( oC) TYPICAL AMPLITUDE RESPONSE STANDARD TOLERANCE INCHES (MILLIMETERS) .XX = +/- .02 (.X = +/- .5) .XXX = +/- .010 (.XX = +/- .25)

Model 2229C Piezoelectric accelerometer Specifications The following performance specifications conform to ISA-RP-37.2 and are typical values, referenced at +75˚F (+24˚C), 100 Hz, unless otherwise noted. Calibration data, traceable to National Institute of Standards and Technology (NIST), is supplied Dynamic characteristics Charge sensitivity Typical pC/g 2.8 Minimum pC/g 2.2 Frequency response See typical amplitude response Resonance frequency kHz 21 (typical) Amplitude response [1] ±5% Hz 1 to 5000 ±1 dB Hz .5 to 7000 Temperature response See typical curve Transverse sensitivity % ≤5 Amplitude...