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The information contained in this document supersedes all similar information that 
may be found elsewhere in this manual. 

  

 

 

Service 

–  Due  to  the  sophisticated 

nature  of  the  sensors  and  associated 
instrumentation 

provided 

by 

PCB 

Piezotronics,  user  servicing  or  repair  is 
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,  is 
acceptable. Caution should be observed 
to  ensure  that  liquids  are  not  permitted 
to  migrate  into  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 
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  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  traceability  to  SI  through 
N.I.S.T.  In  addition  to  the  normally 
supplied  calibration,  special  testing  is 
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 

special  testing,  contact  your  local  PCB 
Piezotronics 

distributor, 

sales 

representative,  or  factory  customer 
service representative.   
 

Returning  Equipment 

– 

Following 

these  procedures  will  ensure  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 

Warranty,  Service, 

Repair,  and  Return  Policies  and 
Instructions 

Materials  Authorization 

(RMA)  Number.  This  RMA  number 
should be clearly marked on the outside 
of  all  package(s)  and  on  the  packing 

Service, Repair, and Return 
Policies and Instructions 

Summary of Contents for 421B3 Series

Page 1: ...ty 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 recalibrate after exposure to any severe temperature extreme sh...

Page 2: ...rchase Order should include authorization to proceed and return at current pricing which can be obtained from a factory customer service representative Contact Information International customers shou...

Page 3: ...isclosure Table Pb Hg Cd Cr VI PBB PBDE O O O O O O PCB X O O O O O O O O O O O X O O O O O O O O O O O O O O O O O O O O O O O O O X O O O O O O O O O X O O O O O O O O O O O X O O O O O X O O O O O...

Page 4: ...e O O X O O O Wires O O O O O O Cables X O O O O O Plastic O O O O O O Solder X O O O O O Copper Alloy Brass X O O O O O This table is prepared in accordance with the provisions of SJ T 11364 O Indica...

Page 5: ...Series 421B3X Differential Input Charge Amplifier Installation and Operating Manual PCB Piezotronics Inc 3425 Walden Avenue Depew New York 14043 2495 24 Hour SensorLineSM 716 684 0001 Fax 716 684 0987...

Page 6: ...in 5 Structural Diagram 6 Ordering Information 7 Special Considerations 7 Use with High Temperature Sensors 7 ESD Warning Information 8 Warning 1 ESD sensitivity 8 Warning 2 ESD sensitivity 8 Caution...

Page 7: ...ss and low pass filters Furthermore RFI filters protect the input and output against radio frequency interference and other electromagnetic influences The amplifier is available in three variations as...

Page 8: ...oltage within the specified required supply voltage of the amplifier should be used for current mode operation The output of the CVLD receiver will be a voltage proportional to the V mA sensitivity of...

Page 9: ...ly calling it out The gain of the amplifier can be calculated using one of the following equations Note Current output in A always equals voltage output in mV For velocity output models the gain of th...

Page 10: ...put Iout 24V and common terminals The current output allows transmission over a maximum distance of 3 000 feet A CVLD power supply as described in the Wiring and Operation section is recommended for t...

Page 11: ...ifier Source capacitance is the input capacitance to the amplifier defined as transducer capacitance plus cable capacitance If the source capacitance is increased due to a long length of cable amplifi...

Page 12: ...amaged by high level voltage from electrostatic discharge ESD Similar to a capacitor a cable can hold a charge caused by triboelectric transfer such as that which occurs in the following Laying on and...

Page 13: ...PCB Stock Product refund 100 of the customer s purchase price for any PCB Stock Product with which the original purchaser is not completely satisfied Stock Product is defined to mean any product desig...

Page 14: ...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 within the warranty period to have your pur...

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