Ptac 2420 Final | UPDATED Questions with 100% Verified Answers

Ptac 2420 Final | UPDATED Questions with 100% Verified Answers

Question:
The feed flow rate is reading 600 lb/hr (setpoint=300)

Answer:
Loss of intrrument air


Question:
Temperature downstream of the cooler reads full scale high

Answer:
Break in thermocouple downstream of cooler


Question:
Flow transmiter reads zero

Answer:
Plug downstream of flow transmiter


Question:
Flow transmiter reads zero flow. The output to the control
valve goes 100% open.The output to the heater goes to
zero(low flow interlock). The D-111 level control valve output
increases and the level is controlling at setpoint. Which event
ocurred?

Answer:
Plug downstream of flow transmiter


Question:
Temperature at the exit of the heater drops tp a value of 23
deg C and the controller output to the heater is 100%

Answer:
The temperature transmiter has lost power


Question:

, History trend indicates wild cycles high and low of the
PV(over-responsive). What is the most likely cause of this
behavior?

Answer:
The proportional gain is too high


Question:
LT-114(D-110) level reading gradually increases even though LT-
113(D-11) level reading has remained steady at 41%.

Answer:
Loss of air to flow valve


Question:
Which would happen if the wire from FIC-110 to FY-110 came
loose or broke?

Answer:
The control valve FV-110 would open


Question:
If the supply of cooling water were lost to E-111. which would
occur?

Answer:
Output of LIC-113 would remain steady


Question:
RTD(resistance

Answer:
Temperature transmiter on heater exit


Question:
Hydrostastic head pressure

Answer:
Level transmiter on D-111