Answer / carl_ellis

What is temperature compensation? How is temperature used in
instrumentation?

Answer:

Temperature compensation is an adjustment to instrument
readings to account for known physical changes due to
temperature.

Temperature and pressure compensation to a differential
pressure measurement can produce an inferred mass flow rate
measurement, rather than a volumetric flow rate.

Most high end instruments have internal temperature
compensation that affects the measurement that is reported,
for instance, DP transmitters measure pressure body
temperature and electronic body temperature.

Fuel storage tanks will measure temperature gradient from
the top to the bottom of a tank and calculate volume and
mass adjustments accordingly, for inventory purposes.

Thermal dispersion flow meters adjust their flow rate
calculations according to the flow medium's temperature.

Carl Ellis
Measure First

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0 Answers   Honeywell,

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A temperature sensor (RTD) connected via a temperature transmitter is adjusted to give an output of 4ma at 60 deg and 20 ma at 600 deg. This output (4-20ma) from the transmitter is connected to an IGBT-inverter to control a high speed (-12,000 to +12,000 RPM) DC motor. And in the inverter it is programmed as, for 4ma the motor speed will be -3,000 RPM and for 20ma the motor speed will be +10,000 RPM. The question is : If the motor speed is +5,500 (RPM), what will be the temperature? (-sign indicates that the motion is in reverse direction).

9 Answers  

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hi! i want to know about mpse exam.

0 Answers  

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1 Answers   Chevron,

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3 Answers   HPCL, Immersion, IOCL,

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1 Answers  

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