The local acceleration of gravity affects the calibration of which parameters?

The local acceleration of gravity plays a significant role in the calibration of torque, pressure, and force sensors because these measurements are directly influenced by gravitational forces. For instance, torque measurements depend on the rotational force applied about a pivot point, which is affected by gravity since it contributes to the weight of the objects involved.

Similarly, pressure readings can be influenced by gravity in applications where the fluid column's height contributes to pressure measurement (like in manometers or barometers). Force sensors, which measure the weight or load of objects, also depend on gravity to accurately quantify the force acting on them, as weight is the product of mass and the acceleration due to gravity.

On the other hand, the options related to temperature, humidity, electrical and thermal measurements, and liquid flow do not primarily rely on gravitational factors for their calibration. While these parameters can be influenced by external conditions, they are calibrated and adjusted based on different sets of principles rather than the acceleration of gravity directly. This understanding clarifies why the calibration of torque, pressure, and force sensors is predominantly affected by local gravitational variations.