Count the Number of Cartons in a Storage Area PLC Logic
Write a PLC program to count the number of carton boxes in the storage area using the counter and SR flipflop logic instructions.
Smoke Detector Testing Procedure
The general testing, calibration or healthiness checking procedure of an addressable smoke detector in the building management system.
PM of Instrument Air Compressor in Oil & Gas Plants
The preventive maintenance (PM) of Instrument Air Compressor in Oil & Gas Plants are discussed in this article.
Example PLC Program
A PLC has been programming to control the starting and stopping of a three-phase electric motor.
Baffle Nozzle Assembly Sensitive Mechanism
The baffle nozzle assembly mechanism is certainly not equally sensitive throughout all portions of its operating range.
Start the Counting from a Preset Value in PLC
Write a plc program such that the counter start counting from a preset value for the packaging application.
Air Pressure Regulator Questions
Air Pressure Regulator regulates the fluctuating air pressure from the receiver vessel down to a lower, more constant level.
Determine the Instrument Calibration Error
Determine what kind of calibration error the instrument has (zero shift, span shift, hysteresis, and/or linearity).
Calculate the Transmitter Values
A pneumatic differential pressure transmitter has a calibrated range of −100 to +100 inches of water column and its output signal range is 3 to 15 PSI.
Pneumatic Relay Questions
Question – What is the response of this pneumatic relay to increasing pressure on each of its input ports?