CCT Installation Procedures 5

Question 1

After installing a new temperature transmitter in a HART loop, what must the technician configure first using a HART communicator before the transmitter will provide correct readings?

Accepted Answer

Configure the sensor type, range (LRV/URV), and engineering units to match the application

Answer

A HART transmitter shipped in factory default state must be configured with the correct sensor type, lower and upper range values, and units before it will provide application-accurate readings.

Question 2

When installing a turbine flow meter, what practice is essential to prevent bearing damage during initial start-up?

Accepted Answer

Bring the process fluid up to flow slowly to allow the rotor to accelerate gradually rather than spinning up instantaneously

Answer

Rapid flow introduction can cause the rotor to over-speed momentarily, exceeding bearing load ratings and damaging the precision bearings.

Question 3

A technician installs a pressure transmitter with a capillary-fill remote seal system. What phenomenon must be accounted for when the ambient temperature changes significantly?

Accepted Answer

Thermal expansion or contraction of the fill fluid changes the zero of the transmitter, requiring temperature compensation

Answer

Fill fluid volume changes with temperature, generating a pressure shift at the transmitter that appears as a zero error unless the system is designed to compensate for it.

Question 4

What is the purpose of a calibration 'as-found / as-left' record when commissioning an instrument after installation?

Accepted Answer

To record the instrument's error before and after adjustment, providing traceability and evidence of measurement quality

Answer

As-found data documents the initial calibration state, and as-left data confirms the final adjusted state; together they provide a traceable calibration record required by quality management systems.

Question 5

When mounting a vibrating fork (tuning fork) level switch in a vessel, which installation angle is generally NOT recommended by manufacturers?

Accepted Answer

Mounting from the bottom of the vessel looking up

Answer

Bottom-up mounting is generally not recommended because buildup of solids or heavy liquids on the forks can cause false actuation and the fork may be difficult to drain.

(CCT) Certified Calibration Technician Practice Test

(CCT) Certified Calibration Technician Practice Test

CCT Installation Procedures 5