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A load cell is calibrated in an environment at a temperature of 21°C and has the following deflcction/load characteristic:  Load (kg)                     0          50        100      150      200 Deflection (mm)         0.0       1.0       2.0       3.0       4.0      When used in an environment at 35°C, its characteristic  changes to the following: Load (kg)                        0         50        100      150       200 Deflection (mm)         0.2       1.3       2.4       3.5       4.6 Determine the sensitivity at 21°C and 35°C. Calculate the total zero drift and sensitivity drift at 35°C. Hence determine the zero drift and sensitivity drift coefficients (in units of pm/°C and (pm per kg)/(°C)).

A load cell is calibrated in an environment at a temperature of 21°C and has the following deflcction/load characteristic:  Load (kg)                     0          50        100      150      200 Deflection (mm)         0.0       1.0       2.0       3.0       4.0      When used in an environment at 35°C, its characteristic  changes to the following: Load (kg)                        0         50        100      150       200 Deflection (mm)         0.2       1.3       2.4       3.5       4.6 Determine the sensitivity at 21°C and 35°C. Calculate the total zero drift and sensitivity drift at 35°C. Hence determine the zero drift and sensitivity drift coefficients (in units of pm/°C and (pm per kg)/(°C)).

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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  1. A load cell is calibrated in an environment at a temperature of 21°C and has the following deflcction/load characteristic:

 Load (kg)                     0          50        100      150      200

Deflection (mm)         0.0       1.0       2.0       3.0       4.0

     When used in an environment at 35°C, its characteristic  changes to the following:

Load (kg)                        0         50        100      150       200

Deflection (mm)         0.2       1.3       2.4       3.5       4.6

  • Determine the sensitivity at 21°C and 35°C.
  • Calculate the total zero drift and sensitivity drift at 35°C.
  • Hence determine the zero drift and sensitivity drift coefficients (in units of pm/°C and (pm per kg)/(°C)).
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