Exam 4: Analog Processes Control Devices, Sensors and Safety

The disadvantage of the bubbler level sensor is that the sensor is submerged in the liquid.

The dummy gage is used in a bridge circuit to compensate for temperature changes that impact the resistance of the active gage.

Match the advantage or disadvantage to the mechanical interlock. -Provides protection with only three degrees of guard door movement

Two unskilled part handlers load forms into a fixture in a robot molding work cell and unload the finished product every twenty minutes. The robot is in the pause mode will they work. The robot is in the pause mode will they work. The probability of injury is_________ .

A photocell changes voltage when exposed to light.

In the safe distance formula (Ds = K x (Ts + Tc + Tr + Tbm) + Dpf), the letter K is the hand speed constant.

The switch safety contacts in an interlock device exhibits positive -mode operation, which overcomes the problem of sticking contacts.

Flow rate through a pipe is inversely proportional to the cross -sectional area of the pipe.

The block in the figure below with the letter T is the power interlocking block. ?

The current -to -pressure converter is also known as a C/P converter.

Which is not a classification of a flow sensor?

Match the advantage or disadvantage to the mechanical interlock. -Small but reliable system

OSHA/ANSI priority list for hazard control has ________ as its first

Match the advantage or disadvantage to the mechanical interlock. -Difficult to override

In hazard reduction, which of the following is the most important method?

Thermal capacitance is inversely proportional to heat flow.

Match the flow sensor with its classification. -Venturi

__________is not a characteristic of a non -contact interlock.

The letter T in a solenoid valve symbol indicates that the port is open.

In conditional guard locking, which of the following is not one of the conditions that must be satisfied for the guard to be opened?