AUTO 1 - LEVEL SWITCHES

Which of the following instruments can be used to check the current state of the float-type level switch?

• continuity tester

• ammeter

• voltmeter

• insulation tester

One of the primary disadvantage of Point Level Measurements is ___

• Moving parts

• needs to be calibrated

• Invasive

• none of the choices

When checking for the current state of the level switch, the resistance reading that shall indicate the normally closed position of the switch must be:

• zero ohms

• 100 ohms

• 1000 ohms

• infinite ohms

The low-level point in the tank should correspond to _________ current reading from the transmitter

• 20mA

• 100mA

• 4mA

• 10mA

Which of the following is the disaadvantage of using the capacitive level transmitter?

• the medium to be measured must have constant dielectric constant

• the medium to be measured must be hot

• the medium to be measured must be cold

• the medium to be measured must be viscous

The high-level point in the tank should correspond to _________ current reading from the transmitter

• 20mA

• 100mA

• 4mA

• 10mA

When checking for the current state of the level switch, the resistance reading that shall indicate the normally open position of the switch must be:

• zero ohms

• 100 ohms

• 1000 ohms

• infinite ohms

During level transmitter calibration, the lower range value is 10 inch and the high range value is 35 inch, how many mA should 28 inch?

• 13.28mA

• 15 mA

• 12.6mA

• 10mA

During level transmitter calibration, the lower range value is 10 inch and the high range value is 35 inch, how many mA should 22.5inch?

• 12mA

• 15mA

• 8mA

• 13mA

During level transmitter calibration, the lower range value is 10 inch and the high range value is 35 inch, what would be the height if the measured signal is 8mA?

• 16.25 in

• 17.32 in

• 10.65 in

• 13 in