Final answer:
Refractometers used for fuel system icing inhibitor (FSII) analysis should be calibrated.
Step-by-step explanation:
True.
Refractometers used for fuel system icing inhibitor (FSII) analysis should be calibrated. Calibration is necessary to ensure the accuracy of the measurements taken by the refractometer. By calibrating the refractometer, you can establish a baseline reference point and account for any deviations in the readings caused by factors like temperature or impurities in the FSII.
For example, if the refractometer is not calibrated, it may provide inaccurate readings, leading to incorrect interpretations of the FSII concentration. In the fuel industry, where accurate analysis is crucial for proper functioning of the fuel system and preventing icing, it is important to regularly calibrate the refractometers. This helps maintain the quality and efficacy of the fuel system icing inhibitors.