Instrument Calibration and Configuration (12402-16)

Calibration equipment that provides a variable input energy source while reading the output signal of the instrument being measured is referred to as a(n)

multifunction loop calibrator

A device's output signal or energy level is proportional to the input signal and

represents the input signal accurately

Calibrating an instrument generally involves at least the two steps of zeroing the instrument and

spanning

In a five-point calibration, the first point is

0 percent percent

The 50 percent point of a 4-20 mA output is

12 mA

In a DP transmitter, the pneumatic relay's diaphragm is acted on by backpressure generated between the nozzle and the

flapper

If you vent the low side of a DP pneumatic transmitter to atmosphere and apply 50" H2O pressure to the high side, the differential pressure is

50" H2O

Using a temperature-controlled bath to calibrate a pneumatic temperature transmitter is a form of

bench calibration

If a level transmitter is mounted below the physical minimum point of the desired level range of the tank in an open vessel application, the zero calibration must be

suppressed

The two most common types of temperature sensing devices that provide input to an analog temperature transmitter are the

TC and RTD

Smart instruments are initially characterized

at the factory

The advantage of the HART® protocol is that it works along with

analog signals

The input stage of a HART® device receives the output of a(n)

ADC

During calibration, the output stage of a HART® device can be adjusted to tweak the

loop current

During calibration, if a HART transmitter is using a damping factor, it must be set to

0

Transducers are signal

converters

An E/P transducer changes a

voltage signal into a pneumatic signal

The first stage of an I/P transducer applies an electrical current to a coil that creates a

magnetic field

An electro-pneumatic valve positioner contains an electrical to pneumatic

transducer

Another name for a smart valve positioner is a(n)

digital valve controller