Internal Calibration for Instruments in Lab Settings

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What is the formula for gravitational force as expressed in the text?

F = m - g

F = m · g (correct)

F = m / g

F = m + g

In the context of mass measurement, what is the purpose of the compensation force F_c?

It creates a displacement in the surrounding air.

It attracts the object to be weighed.

It opposes the gravitational force.

It compensates for the buoyancy force. (correct)

What factors influence the buoyancy force according to the text?

Pressure, temperature, and humidity (correct)

Density of the medium and gravitational acceleration

Density of atmospheric air and density of reference weights

Density of the object and volume of air displaced

Why is continuous calculation of the buoyancy force necessary in high resolution balances?

To counteract errors caused by air density changes Signup and view all the answers

What is the relationship between the density of reference weights and the error caused by changes in air density?

Lower density reference weights lead to higher errors Signup and view all the answers

How can one estimate the density of ambient air as per OIML R111, section E3?

By applying a formula specified in OIML R111 Signup and view all the answers

What process uses the balance's inner mechanism to self-calibrate?

Internal calibration Signup and view all the answers

When must instruments be adjusted with Internal Calibration before use?

Before the lab calibration Signup and view all the answers

What is the formula representing the indication of an instrument in relation to the force exerted by a weighing object?

$I = k_s · m · g · (1- ρ_α / ρ)$ Signup and view all the answers

What function must instruments equipped with an automatic zero-setting or zero-tracking function be calibrated in accordance with?

Customer's setting Signup and view all the answers

Which factor compensates for the force due to the air buoyancy of the weighing object in the formula for indication?

$ρ_a$ - density of air ambient Signup and view all the answers

What type of weights can be used for carrying out adjustment on instruments?

External or built-in test weights Signup and view all the answers

Internal Calibration for Instruments in Lab Settings

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Questions and Answers

What is the formula for gravitational force as expressed in the text?

In the context of mass measurement, what is the purpose of the compensation force F_c?

What factors influence the buoyancy force according to the text?

Why is continuous calculation of the buoyancy force necessary in high resolution balances?

What is the relationship between the density of reference weights and the error caused by changes in air density?

How can one estimate the density of ambient air as per OIML R111, section E3?

What process uses the balance's inner mechanism to self-calibrate?

When must instruments be adjusted with Internal Calibration before use?

What is the formula representing the indication of an instrument in relation to the force exerted by a weighing object?

What function must instruments equipped with an automatic zero-setting or zero-tracking function be calibrated in accordance with?

Which factor compensates for the force due to the air buoyancy of the weighing object in the formula for indication?

What type of weights can be used for carrying out adjustment on instruments?

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