A strain gauge pressure sensor has the following specification. Will it be suitable for the measurement of pressure of the order of 100 kPa to an accuracy of 5 kPa in an environment where the temperature is reasonably constant at about 20 degree C? Ranges: 2 to 70 MPa, 70 kPa to 1 MPa Excitation: 10 V d. c. or a. c. (r. m.s.) Full range output: 40 mV Non-linearity and hysteresis errors: 0.5% Temperature range: - 54 to +120 degree C

the measurement of pressure of the order of 100 KPa to an accuracy of +- 5Kpa is POSSIBLE with the sensor

Explanation:

Given that;

specifications include the range 70 kPa to 1 MPa which includes 100 kPa.

specification include non-linearity and hysteresis error of 0.5%

first we find the non-linear error

= 1 MPa * 0.5%

= 1 MPa * 0.005

= 0.005 MPa = 5 KPa

therefore, it includes the non-linearity error of +- 5 KPa.

the specification include the temperature range -54 to 120 degree Celsius which includes 20 degree Celsius

THEREFORE, the measurement of pressure of the order of 100 KPa to an accuracy of +- 5Kpa is POSSIBLE with the sensor

false

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