PCB Test & Measurement Seite 134

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Common Options for PCB Products PCB PIEZOTRONICS INC 716 684 0001 Fax 716 685 3886 For Additional Specification Information Visit www pcb com 132 PCB designs and manufactures thousands of custom product variations These range from minor modifications of sensitivity or mounting configuration all the way to complex projects built from the ground up based on customer specifications for the most demanding applications PCB also provides a simplified format for ordering many custom versions of our stock and standard products through the use of prefixes What follows is a list of the most popular prefixes and a brief explanation of their function Please contact PCB to see if the prefix of interest can be combined with the model in which you are interested Option A Adhesive Mount e g A353B18 This option designates the removal of the integral stud so that the sensor has a flat bottom for direct adhesive mounting Note that the frequency response will not be as high as with stud mounting and that higher frequency response will be achieved with stiffer adhesives Option CA Ablative Coating e g CA102B04 This option designates that the diaphragm of the pressure sensor is coated with an ablative material in order to minimize the effects of thermal shock Option E Emralon Coating e g CA102B04 This option designates that the diaphragm of the pressure sensor is coated with Emralon in order to provide ground isolation Option HT High Temperature Operation e g HT356A02 An adjustment to the built in microelectronic circuitry permits sensor operation to temperatures that exceed the standard temperature range Typically the low frequency range will be somewhat compromised The published specification sheet for the base model will indicate to what extent the low frequency response is compromised Option J Ground Isolation e g J353B01 J225C The ground isolation option provides an electrical isolation of 108 ohms between the sensor and the test structure Isolating the sensor from the test object reduces noise induced by electrical ground loops For accelerometers attaching the ground isolation base reduces the upper frequency range slightly The J option is only needed when ground isolation is required and the sensor is being stud mounted If adhesively mounting the accelerometer will include an adhesive base that also provides ground isolation Physical dimensions may change so refer to model drawing for details Option M Metric Mounting Thread e g M353B15 M102B16 This option is used for applications requiring a metric thread for installation On models for which a separate mounting stud or cap screw is provided this option supplies an adaptor stud or cap screw with a metric installation thread For models that incorporate an integral mounting stud the optional unit includes an integral metric threaded stud There are no compromises to any specification when installing with a metric thread Note many models are supplied with both SAE and Metric mounting hardware Option P Positive Polarity Element e g P357B03 When the phase of the output signal is important especially for timing and multi channel applications it may be necessary to reverse the polarity of the output signal to correspond to the inverting characteristics of the signal conditioner being used Most charge amplifiers invert the measurement signal and are typically used with charge output sensors having a negative signal polarity In cases where the signal conditioner is a non inverting device it may be desirable to use a positive polarity sensor This option provides a positive polarity charge output sensor without compromise to any other specification NOTE Adding or combining some of these options may result in a custom sensor Contact PCB for further information 716 684 0001 9 T Mcatalog 2011 Seite 125 166 SYN G500 21 04 11 18 04 Seite 138


Vorschau PCB Test & Measurement Seite 134