PCB Piezotronics 137B21A Installation And Operating Manual Download Page 3

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 is 
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. 
 

Warranty

 – 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

SM

: (716) 684-0001 

Website: www.pcb.com 
E-mail: [email protected] 

 
 
 
 
 
 
 
 
 
 

 
 

DOCUMENT NUMBER:  21354 
DOCUMENT REVISION:  B 
ECN: 17900 

Summary of Contents for 137B21A

Page 1: ... Sensor 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: ... any case care must be taken such that the sensor s diaphragm is not oriented down to avoid ground reflections In some cases where flash temperatures such as those generated by blasts and shock fronts are present it may be necessary to thermally insulate the diaphragm to minimize signals generated by these effects Photo 2 Common black vinyl electrical tape has been found to be an effective thermal...

Page 5: ... hundreds or thousands of feet use a higher current up to 20 mA maximum Use of low capacitance cable i e RG 62 U and impedance matching variable resistors are suggested to improve long cable performance characteristics See Guide G 0001 for a discussion on cable considerations 3 1 POLARITY The 137B2XX Series produces a positive going output voltage for increasing pressure output 4 0 LOW FREQUENCY R...

Page 6: ...erial Aluminum Aluminum Diaphragm Invar Invar Sealing Epoxy Epoxy Electrical Connector 10 32 Coaxial Jack 10 32 Coaxial Jack Weight 12 5 oz 354 gm 1 All specifications are at room temperature unless otherwise specified In the interest of constant product improvement we reserve the right to change specifications without notice ICP is a registered trademark of PCB Group Inc OPTIONAL VERSIONS Optiona...

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