Dynamic Distributors 103B11 User's Manual
Contents
1. The Series 103A microphones are high sensitivity pressure sensors featuring miniature size built in solid state electronics and acceleration compensation The Model 103A see installation drawing has pigtail leads extending radially from the side of the unit and has a nominal sensitivity of 1500 mV psi The Model 103A11 is similar in appearance and in mode of electrical connection but differs from the Model 103A in that the sensitivity is nominally 500 mV psi Saray Oo Ea i Ground Pwr Sig E Vent 1a Pressure EGET Models 103A and 103A11 ICP Sound Pressure Sensors The Model 103A02 is similar physically to the 103A and has similar sensitivity 1500 mV psi but the electrical connection is made through a top mounted 10 32 coaxial connector The Model 103A12 also has the top connector like the 103A02 but the sensitivity is 500 mV psi These units are ideal for wind tunnel testing of models because of the small size and high sensitivity Drawing Number 21082 Revision NR UNUM CP CoS 10 532 Tha a y Dt i 1 Connector Eran FF Structure Bee 0 10 Pressure Bore Models 103A02 and 103A12 ICP Sound Pressure Sensors 2 0 DESCRIPTION Refer to installation drawing no 103 1010 90 included as part of this manual The 103A Series Sensors utilize a bimorph bender crystal cantileve2. BLACK Q XDUCER SCOPE SERIES 480 BATTERY SIGNAL CONDITIONER Models 103A amp Electrical Connection NOTE No electrical connection is made to the blue vent lead This lead serves to vent internal pressure within the sensor when the 103A and 103A11 are used in evacuated chambers The internal pressure bleeds out slowly around the wires of this lead This lead may be cut off flush with body if the sensor will never be used in this manner To make the electrical connection to the Models 103A02 and 103A12 top connector models simply connect the Xducer output of the power unit to the 10 32 coaxial connector using a PCB Model 002C Series coaxial cable The output signal is taken from the power unit connector labeled Scope or Output See figure below 002A CABLE Lo aN SCOPE o 1G XDUCER 2 TO READOUT O O40 8 O MODEL 103A02 amp A12 MODEL 482A04 POWER UNIT Models 103A02 amp A12 Electrical Connection OPERATION MANUAL FOR MICROPHONE Series 103A Refer to Guide G 0001B for tips on power and signal utilization NOTE The internal low noise amplifier in the Model 103A A02 All and A12 differ from the standard ICP amplifiers described in Guide G 0001B in that the turn on or bias voltage is nominally 4 volts Proper turn on for Models 103A02
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4. All and Al 2 will not give center scale reading on the fault monitor meters found on most PCB signal conditioners but will show a reading of approximately 20 of F S on these meters This puts it at the lower limit of the green or normal area of the meters This is normal and in no way indicates faulty operation 4 0 OUTPUT SIGNAL The output signal from the 103A Series is a voltage proportional to input pressure The polarity is positive going for increasing input pressure The signal is of high enough level and low enough output impedance to be fed directly into most oscilloscopes tape recorders strip chart recorders A to D converters etc Consult the factory for information regarding galvo driving since special amplifiers are needed to drive most high current galvanometers Low frequency response is limited by sensor discharge TC given in the specification sheet and by coupling time constants throughout the system To take full advantage of the TC of the sensor make sure that coupling TC s from power unit to readout are at least an order of magnitude longer than the discharge TC or use a direct coupled signal conditioner such as the Model 484B Consult factory for details 5 0 CALIBRATION The 103A Series Sensors must be dynamically calibrated using a known step function or pulse or with a microphone calibrator Drawing Number 21082 Revision NR At PCB the units are subjected to various calibrated steps of pneum
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6. ODEL 061A04 CLAMP ST STL 2 SUPPLIED 250 6 35 m 125 3 18 THRU 390 9 91 X 003 08 Y MAX 2X L_1 089 2 26 X 200 5 08 Y 4 40 UNC 2A X 145 3 68 v MOUNTING TORQUE SHOULD BE BETWEEN 4 5 INCH POUNDS 4 5 5 6 Nm EXCEEDING THIS DIMENSION WILL START LOWERING FREQUENCY RESPONSE REVISIONS REVISED PER ECR 22509 7 13 05 1 INSTALLED WITH ADHESIVE MOUNTING RING PRESSURE SENSOR 375 9 53 MODEL 065A66 025 635 THICK ADHESIVE MOUNTING RING fo 285 7 24 125 3 18 THRU 390 9 91 X 015 030 38 76 Y PREP SURFACE WITH A 500 12 70 SPOTFACE 015 030 38 76 Y 32 FINISH MIN CENTER SPOTFACE TO 9 125 3 18 APPLY O65A66 ADHESIVE MOUNTING RING THEN SENSOR LET SELF CURE FOR 12 HRS PRIOR TO TESTING MAKE SURE SURFACE IS FREE OF DIRT OIL AND DEBRIS BEFORE APPLICATION 2 PRESSURE SHOULD NOT EXCEED 20 PSI WHEN USING ADHESIVE MOUNTING RING A EXCEEDING THIS DIMENSION WILL START LOWERING FREQUENCY RESPONSE DIMENSIONS IN INCHES DIMENSIONS IN MILLIMETERS ORAWNIECB 4505 wre LC DOR PREZOTROMITS DECIMALS XX 01 BEES puo CHK D oe al sigs 5425 WALDEN AVE DEPEW NY 14043 716 684 0001 EMAIL SALES PCB COM Uu EEUU E s 716 D DES ANGLES RE pagas sares Xwwe hstes cope PWG NO ME Res Sasi 24544 003 005 0 07 0 13 MODEL 103B01 B11 SERIES CA PRESSURE SE
7. PRESSURE DIVISION Model 103B11 ICP Dynamic Pressure Sensor Installation and Operating Manual For assistance with the operation of this product contact the Pressure Division of PCB Piezotronics Inc Division toll free 888 684 0015 24 hour SensorLine M 716 684 0001 Fax 716 686 9129 E mail pressure pcb com PCB PIEZOTRONICS PRESSURE DIVISION PCB PIEZOTROMCS A PCB GROUP COMPANY Warranty Service Repair and Return Policies and Instructions The information contained in this document supersedes all similar information that may be found elsewhere in this manual Total Customer Satisfaction PCB Piezotronics guarantees Total Customer Satisfaction If at any time for any reason you are not completely satisfied with any PCB product PCB will repair replace or exchange it at no charge You may also choose to have your purchase price refunded in lieu of the repair replacement or exchange of the product Service Due to the sophisticated nature of the sensors and associated instrumentation provided by PCB Piezotronics user servicing or repair 15 not recommended and if attempted may void the factory warranty Routine maintenance such as the cleaning of electrical connectors housings and mounting surfaces with solutions and techniques that will not harm the physical material of construction 1s acceptable Caution should be observed to insure that liquids are not permitted to migrate i
8. atic pressure to obtain a linearity curve over the full range of the instruments 6 0 MAINTENANCE AND REPAIR The small size and sealed construction of the Series 103A precludes field maintenance and repair Should the time constant degrade or an abnormality appear in the normal bias voltage bake the unit out in a 250 F oven for 1 to 2 hours then re test If this is not effective or if other problems should occur contact the factory for assistance in tracing the problem or for instructions on returning the unit for repair 7 0 PRECAUTIONS Do not apply voltage to the unit without a current limiting device in the line such as incorporated in all PCB signal conditioners 20 mA maximum to do so will destroy the internal amplifier 2 Do not subject these units to temperatures higher than 250 F s Do not attempt to disassemble these units as to do so voids the warranty 4 Use caution when removing units that have been mounted with epoxies or other strong adhesives Excessive squeezing or torquing may damage the units and or cause a calibration shift 5 In vibratory environments secure cables and leads to surrounding structures to avoid lead or cable damage 6 Do not over torque when using the Servo clamps or the clamp nut since this could damage the units 7 Do not overpressure see specs for maximum pressure to do so may change the calibration ICP is a registered trademark of PCB Piezotronic
9. chosen being a function of the space available along with other use dictated parameters The simplest method of mounting and also the one that utilizes the least volume 1s the adhesive method The microphone is simply bonded directly to the mounting surface with an at least 10 diameter hole through the surface to feed the pressure signal to the diaphragm Many different types of adhesives may be used to bond the 103A in this manner The important point being to apply the adhesive very sparingly so that removal does not damage the sensor The 103A may also be mounted using the Model 061A04 Servo clamps if space is available The Model 060A11 Clamp Nut may only be used with the top connector Models 103A02 and 103A12 since the radial wire leads of the Model 103A and 103A11 would interfere with the clamp nut The installation drawing gives detailed instructions on preparation of the port for this type of installation 31 ELECTRICAL For the Models 103A and 103A11 pigtail models connect the center conductor from the Xducer output of any ICP power unit to the white Pwr Sig lead and connect the outer shell of the Xducer connector to the black ground lead The black lead is electrically connected to the outer case See figure below Drawing Number 21082 Revision NR x VIEW FROM DIAPHRAGM S E WHITE TO READOUT BLUE N C e
10. ial testing contact your local PCB Piezotronics distributor sales representative or factory customer service representative Returning Equipment Following these procedures will insure that your returned materials are handled in the most expedient manner Before returning any equipment to PCB Piezotronics contact your local distributor sales representative or factory customer service representative to obtain a Return Materials Authorization RMA Number This RMA number should be clearly marked on the outside of all package s and on the packing list s accompanying the shipment A detailed account of the nature of the problem s being experienced with the equipment should also be included inside the package s containing any returned materials A Purchase Order included with the returned materials will expedite the turn around of serviced equipment It 15 recommended to include authorization on the Purchase Order for PCB to proceed with any repairs as long as they do not exceed 50 of the replacement cost of the returned item s PCB will provide a price quotation or replacement recommendation for any item whose repair costs would exceed 50 of replacement cost or any item that is not economically feasible to repair For routine calibration services the Purchase Order should include authorization to proceed and return at current pricing which can be obtained from a factory customer service representative Warrant
11. nto devices that are not hermetically sealed Such devices should only be wiped with a dampened cloth and never submerged or have liquids poured upon them Repair In the event that equipment becomes damaged or ceases to operate arrangements should be made to return the equipment to PCB Piezotronics for repair User servicing or repair is not recommended and if attempted may void the factory warranty Calibration Routine calibration of sensors and associated instrumentation 1s 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 1s to recalibrate on an annual basis It is also good practice to recalibrate after exposure to any severe temperature extreme shock load or other environmental influence or prior to any critical test PCB Piezotronics maintains an ISO 9001 certified metrology laboratory and offers calibration services which are accredited by A2LA to ISO IEC 17025 with full traceablility to N LS T In addition to the normally supplied calibration special testing 15 also available such as sensitivity at elevated or cryogenic temperatures phase response extended high or low frequency response extended range leak testing hydrostatic pressure testing and others For information on standard recalibration services or spec
12. red from the side wall and attached to the center of a thin recessed invar diaphragm Pressure acting on the surface of the diaphragm results in a net force which strains or deflects the diaphragm in proportion to the applied pressure The diaphragm bends the crystal creating an output voltage which is also proportional to applied pressure This voltage is fed to the gate of a miniature MOSFET source follower amplifier which reduces the output impedance to less than 100 Ohms allowing the driving of long cables and permitting operating directly into most readout instruments Refer to Bulletin G 0001B General Guide to ICP Instrumentation for a detailed description of the built in amplifier concept Models 103A A02 All and AI2 have output signals superimposed upon a 4 V approx bias level at the amplifier output All PCB signal conditioners are designed to eliminate this bias voltage while supplying power to the internal amplifier OPERATION MANUAL FOR MICROPHONE Series 103A The result is a two wire system precluding the need for multi conductor cabling A second diaphragm located behind the pressure diaphragm and attached to another bimorph bender crystal acting in opposition to the pressure crystal provides acceleration compensation to the Series 103A Sensors 3 0 INSTALLATION As shown in installation drawing 103 1010 90 the Series 103A Microphones may be properly mounted in several ways the exact method
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14. y All equipment and repair services provided by PCB Piezotronics Inc are covered by a limited 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 improper excitation power or electrostatic discharge is not covered by warranty Contact Information International customers should direct all inquiries to their local distributor or sales office A complete list of distributors and offices can be found at www pcb com Customers within the United States may contact their local sales representative or a factory customer service representative A complete list of sales representatives can be found at www pcb com Toll free telephone numbers for a factory customer service representative in the division responsible for this product can be found on the title page at the front of this manual Our ship to address and general contact numbers are PCB Piezotronics Inc 3425 Walden Ave Depew NY 14043 USA Toll free 800 828 8840 24 hour SensorLine 716 684 0001 Website www pcb com E mail info pcb com OPERATION MANUAL FOR MICROPHONE Series 103A 1 0 DESCRIPTION
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