7.2.5 Measuring Equipment Flashcards
Why is accurate measurement essential in aviation engineering?
Accurate measurement is essential to ensure safety and compliance in aviation engineering.
What must be done before using any precision measuring tool?
The tool must be within its calibration period.
Who can calibrate a measuring tool?
The tool must be calibrated by an approved person or organisation.
What is necessary to check before using a measuring tool?
It is necessary to ensure the tool will ‘zero’ correctly.
What does it mean for a tool to ‘zero’ correctly?
When the measuring faces are properly closed, the reading on the instrument should read zero.
What should be done if a measuring tool does not read zero?
If zero is not achieved, the tool requires recalibrating.
Why is calibration of torque wrenches essential?
Calibration ensures accuracy and longevity of torque wrenches.
What can happen without calibration of torque wrenches?
General wear and tear can lead to incorrect and unreliable readings.
What is a torque analyser used for?
A torque analyser is used for checking and calibrating torque wrenches and power tools.
What standards must torque tools conform to?
Torque tools must conform to ISO 6789, BS 6703, and ANSI/ASME B 107.14M.
How is a torque wrench calibrated using an analyser?
The torque wrench is attached to the analyser, and the required force is applied to read the torque figure.
What units of measurement can be selected on a torque analyser?
Units include N.m, dN.m, cN.m, lbf.ft, lbf.in, ozf.in, kgf.m, kgf.cm, gf.cm.
Who carries out the calibration of torque wrenches?
Calibration is carried out by approved organisations employing certified personnel.
How are pressure gauges and transmitters calibrated?
They are calibrated by hydraulic pumps using water or oil, or by pressure generators using oil or gas.
What is the method for recalibrating a micrometer?
Recalibration is achieved by inserting a precision block between the anvil and the spindle.
