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PCB Load & Torque, Inc.   

 Toll-Free in USA 866-684-7107   

 716-684-0001   

 www.pcbloadtorque.com

 

 

 

DUAL BRIDGE LOAD CELL OPERATION MANUAL 

 

9

 

Certificate  information  includes  tabulated  measurement 
variable  data  zero  balance,  bridge  input/output  resistance, 
computer  nonlinearity  and  hysteresis,  static  error  band  (SEB) 
calculations and entries abilities and traceability statements. 

If an initial evaluation shows that a transducer requires repair, 
PCB will provide the customer with an estimate prior to taking 
any corrective action. 
 

12.1 RMA / Purchase Order 

Please  request  a  return  material  authorization  (RMA)  before 
sending  a  load  cell  back  to  the  factory  for  any  reason.  For 
calibration  services,  if  possible,  a  copy  of  the  purchase  order 
covering  the  requested  services  should  be  included  with  the 
returned load cell. 

 

13.0 WARRANTY 

 
Standard  warranty  on  dual  bridge  load  cells  covers  parts  and 
workmanship.    For  full  details,  refer  to  the  Warranty 
Statement supplied with each load cell. 
  
If  the  load  cell  is  defective  for  reasons  other  than  overloads, 
return  it  to  the  factory  for  detailed  evaluation.  Factory 
evaluation  may  show  that  the  load  cell  is  repairable  or  non-
repairable and if repair or replacement will be under warranty. 
If not under warranty, the customer will be contacted with the 
cost  of  repairs  and  recalibration.  Once  authorization  to 
proceed is received, a delivery date will be provided. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Manual Number: 54811 

Manual Revision: A 

Revision Date: 6/6/13 

ECO Number:  41606 

Summary of Contents for 1402-12ADB

Page 1: ... LOAD CELL DUAL BRIDGE 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: ... 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...

Page 3: ...ory 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...

Page 4: ... O PCB板 X O O O O O 电气连接器 O O O O O O 压电晶体 X O O O O O 环氧 O O O O O O 铁氟龙 O O O O O O 电子 O O O O O O 厚膜基板 O O X O O O 电线 O O O O O O 电缆 X O O O O O 塑料 O O O O O O 焊接 X O O O O O 铜合金 黄铜 X O O O O O 本表格依据 SJ T 11364 的规定编制 O 表示该有害物质在该部件所有均质材料中的含量均在 GB T 26572 规定的限量要求以下 X 表示该有害物质至少在该部件的某一均质材料中的含量超出 GB T 26572 规定的限量要求 铅是欧洲RoHS指令2011 65 EU附件三和附件四目前由于允许的豁免 CHINA RoHS COMPLIANCE ...

Page 5: ...te 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 Indicates that said hazardous substance contained in all of the homogeneous materials for this part is below the limit requirement of GB T 26572 X Indicates that said hazardous substance contained in at le...

Page 6: ... 06 in x 3 50 in 153 90 mm x 88 90 mm 8 Weight 21 lb 4 53 kg Mounting Thread 1 14 UNS 3B No Metric Equivalent Sensing Element Strain Gage Strain Gage Mounting Torque 1400 in lb 158 Nm Deflection at Full Scale Capacity 0 001 in 0 03 mm Electrical Connector PT02E 10 6P 2 PT02E 10 6P 2 All specifications are at room temperature unless otherwise specified In the interest of constant product improvemen...

Page 7: ...10 3 12X THRU n5 125 130 2 B C 1 14UNS 3B x1 37 34 8 45 90 n2 59 65 8 1 75 44 5 n6 06 153 9 81 20 6 1 63 41 4 CONNECTOR A PTO2A 10 6P CONNECTOR WIRING CODE TYPICAL PIN A EXC PIN B SIG PIN C SIG PIN D EXC PIN E N C PIN F N C CONNECTOR B DUAL BRIDGE ONLY 1202 1402 SERIES LOAD CELLS 1 SUPPLIED WITH MATING FASTENERS 1202 1402 SERIES BASES n2 59 65 8 n5 125 130 2 B C 3 8 24 UNF 2B x 88 12X 1 45 n6 06 1...

Page 8: ...ELECTRICAL INSTALLATION 5 5 1 Electrical Drawing Western Regional Std 5 5 2 Cable Grounding Considerations 5 6 0 CALIBRATION 5 6 1 Calibration Certificate Description 5 6 1 1 Measured Output 6 6 1 2 Hysteresis 6 6 1 3 Best Fit Output 6 6 1 4 Strain Gage Measurements 6 6 1 5 Shunt Calibration Standard Resistor 6 6 1 6 Static Error Band SEB 6 7 0 MOMENT COMPENSATION 6 8 0 FATIGUE OVERLOAD 6 9 0 SHUN...

Page 9: ...the parts under test have completed the planned fatigue test cycles 3 0 OVERVIEW Dual bridge fatigue rated load cells are specifically designed for repetitive testing Applications include material testing component life cycle testing and structural testing The load cells contain an extra bridge to be used either as a back up incase the primary bridge fails during a test or just for confirmation of...

Page 10: ...note that the performance of the load cell may be affected if the factory installed mounting base is removed or modified 4 2 Mounting Load Cell to a Standard Base or Custom Fixture If the load cell is to be mounted to a custom base or fixture it is necessary to consider the following 1 The thickness of the new base or fixture must not be any thinner than the original base supplied with the load ce...

Page 11: ...ector Protector 1 Remove the 4 40 x 1 4 button head cap screws from the connector using a 1 16 hex wrench as shown in Figure 7 2 Carefully pull the connector from the load cell Take care to not break or loosen any wire connections 3 Slide the connector protector 54823 02 behind the connector as shown in Figure 8 4 Apply a drop Loctite Threadlocker Blue 242 to the threads of the 4 40 x 3 8 socket h...

Page 12: ...m wiring may result in unstable or noisy signals A simple test with a voltmeter connected between the power cord ground and the structure on which the load cell is mounted can confirm that the structure has been properly grounded If the power cord ground and structure ground are not at the same potential it may be necessary to provide a secure structure ground perhaps by driving a copper rod and a...

Page 13: ...ls are adjusted such that the error due to eccentric loading is less than 0 1 per inch of offset Side loads moments and torque must be limited to avoid electrical or mechanical damage to the load cell The allowable extraneous loads are directly related to the rated capacity of the load cell Maximum side force allowed is 100 of the rated capacity for the load cell Maximum moment allowed is 100 of t...

Page 14: ...ation certificate and adjust the span or gain until the display reads the force value stated on the certificate 4 Repeat steps 1 3 to verify that a valid calibration setting has been obtained 5 If possible apply a known load to the measurement system to further verify that the calibration has been accurately set up 9 3 Estimating Shunt Resistor for a Given Load The following formula can be used to...

Page 15: ...bridge resistances A D excitation and B C the signal leads 9 Check bridge balance 10 Keep a record of your observations correct problems or contact PCB factory for assistance 11 2 1 Estimating Bridge Balance using an Ohm Meter A load cell that has been severely overloaded will exhibit a significant zero offset in the Wheatstone bridge It can be useful to estimate the bridge unbalance using a digit...

Page 16: ...e factory for any reason For calibration services if possible a copy of the purchase order covering the requested services should be included with the returned load cell 13 0 WARRANTY Standard warranty on dual bridge load cells covers parts and workmanship For full details refer to the Warranty Statement supplied with each load cell If the load cell is defective for reasons other than overloads re...

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