PCB Piezotronics 357B12 Installation And Operating Manual Download | Manualshive

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Model 357B12

High temp., miniature (2 gm), ceramic shear, charge output accel., 3 pC/g,

Installation and Operating Manual

For assistance with the operation of this product,

contact PCB Piezotronics, Inc.

Toll-free: 800-828-8840

24-hour SensorLine: 716-684-0001

Fax: 716-684-0987

E-mail: [email protected]

Web: www.pcb.com

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Summary of Contents for 357B12

Page 1: ...ar charge output accel 3 pC g Installation and Operating Manual For assistance with the operation of this product contact PCB Piezotronics Inc Toll free 800 828 8840 24 hour SensorLine 716 684 0001 Fax 716 684 0987 E mail info pcb com Web www pcb com ...

Page 2: ...oid the factory warranty Calibration Routine calibration of sensors and associated instrumentation is recommended as this helps build confidence in measurement accuracy and acquired data Equipment calibration cycles are typically established by the users own quality regimen When in doubt about a calibration cycle a good rule of thumb is to recalibrate on an annual basis It is also good practice to...

Page 3: ... warranty against defective material and workmanship for a period of one year from date of original purchase Contact PCB for a complete statement of our warranty Expendable items such as batteries and mounting hardware are not covered by warranty Mechanical damage to equipment due to improper use is not covered by warranty Electronic circuitry failure caused by the introduction of unregulated or i...

Page 4: ... for most models These accelerometers are ideal for structural testing machine monitoring and vehicular shock and vibration measurement tasks where high temperatures preclude the use of accelerometers with built in microelectronics Enclosed is a Specification Sheet which lists the complete performance characteristics of the particular accelerometer 3 0 OPTIONAL FEATURES In addition to these standa...

Page 5: ...surface consider adhesive mounting as a possible alternative Inspect the area checking that there are no burrs or other foreign particles interfering with the contact surface STEP 2 Wipe clean the mounting surface and spread on a light film of grease oil or similar coupling fluid prior to installation Figure 3 Mounting Surface Lubrication Adding a coupling fluid improves vibration transmissibility...

Page 6: ... for most applications It is generally used only for machinery monitoring and other portable trending applications Both the accuracy and repeatability at low 5 Hz and high frequency 1 kHz ranges are questionable 5 0 CABLING Care and attention to installation is essential as the reliability and accuracy of your system is no better than that of the output cable Charge mode sensors require the use of...

Page 7: ...to a precise sensitivity such as 10 0 or 100 0 mV g for ease of data analysis This is accomplished with most PCB laboratory charge amplifiers and some miniature in line units as well For fixed sensitivity in line charge converters such as the PCB Series 422 the system sensitivity mV g is determined as the product of the charge amplifier sensitivity mV pC and the charge sensitivity of the accelerom...

Page 8: ...edure themselves While this may result in both a savings of time and money it has also been attributed to incorrect readings and costly errors Therefore in an effort to prevent the common mistakes associated with customer performed calibration this document includes a broad overview of the Back to Back Calibration technique This technique provides a quick and easy method for determining the sensit...

Page 9: ...2 Figure 12 Typical Calibration Set Up Adhesively mounted sensors use similar practices However in this case a small portion of quick bonding gel or similar temporary adhesive is used to attach the test sensor to a reference standard designed with a smooth flat mounting surface In addition to mounting the selection of the proper equipment is critical Some of the more important considerations inclu...

Page 10: ...rs Incorrect Understand Back to Back Calibration limitations Do not expect the uncertainty of calibration to be any better than 2 In fact the uncertainty may be as high as 3 or 4 for frequencies 10 Hz or 2 kHz Since large sensors may affect high frequency accuracy verify that the test sensor does not mass load the reference standard Validate your calibration system with another accelerometer prior...

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Page 13: ...IONS METRIC DIMENSIONS IN BRACKETS 4 RECOMMENDED MOUNTING TORQUE 2 5 FOOT POUNDS 3 7 NEWTON METERS MOUNTING HOLE PREPARATION 218 5 54 X 300 7 62 MIN 1 4 28 UNF 2B X 200 5 08 MIN F M6 X 0 75 M6 X 1 00 M8 X 1 25 MOUNTING INSTRUCTIONS ENGLISH DIMENSIONS IN BRACKETS 4 RECOMMENDED MOUNTING TORQUE 3 7 NEWTON METERS 2 5 FT POUNDS M8 X 1 25 MOUNTING HOLE PREPARATION 6 75 266 X 8 64 340 MIN M8 X 1 25 6H X ...

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