Process Engineering Division – Instrumentation and Automation Section – Daily Topics – Topic No. 2021-01-12
Thread Content
Process Engineering Division – Instrumentation and Automation Section – Daily Topics – Topic No. 2021-01-12: Discussion question: 355. Since the zero point and range of an intelligent transmitter can be set and modified using a handheld communicator, is it still necessary to calibrate such transmitters using pressure signals? Why?
Since the zero point and range of an intelligent transmitter can be set and modified on a handheld communicator, is it still necessary to use a pressure signal to calibrate the intelligent transmitter? Why? Answer: The zero point (including zero-point offset in both positive and negative directions) and range of the smart transmitter can be set and modified on the handheld communicator. However, it is not possible to tell from the handheld communicator whether the distant setting is correct, and therefore it cannot be adjusted either. If the smart transmitter was unqualified to begin with, adjusting its range using a handheld communicator will not make it qualified either; therefore, the smart transmitter still needs to be calibrated by applying a pressure signal before it can be used.
Smart transmitters need to be calibrated using pressure signals. Since it is not possible to tell from the handheld communicator whether the smart signaler is set correctly, it cannot be adjusted either. If the smart transmitter was unqualified to begin with, adjusting its range using a handheld communicator will not make it qualified either; therefore, the smart transmitter still needs to be calibrated by applying a pressure signal before it can be used.
The zero point (including zero-point positive and negative offset) and range of the intelligent transmitter can be set and modified on the handheld communicator. However, it is not possible to tell from the handheld communicator whether the remote setting is correct, and therefore it cannot be adjusted either.
Smart transmitters need to be calibrated using pressure signals. Since it is not possible to tell from the handheld communicator whether the smart signaler is set correctly, it cannot be adjusted either. If the smart transmitter was unqualified to begin with, adjusting its range using a handheld communicator will not make it qualified either; therefore, the smart transmitter still needs to be calibrated by applying a pressure signal before it can be used.
It is needed. Since it is not possible to tell from the handheld communicator whether the distant setting is correct, it cannot be adjusted either. However, if the smart transmitter was unqualified to begin with, it will remain unqualified even after range adjustment, and must be calibrated before it can be used.
Smart transmitters need to be calibrated using pressure signals. Since it is not possible to tell from the handheld communicator whether the smart signaler is set correctly, it cannot be adjusted either. If the smart transmitter was unqualified to begin with, adjusting its range using a handheld communicator will not make it qualified either; therefore, the smart transmitter still needs to be calibrated by applying a pressure signal before it can be used.
Smart transmitters need to be calibrated using pressure signals. Since it is not possible to tell from the handheld communicator whether the smart signaler is set correctly, it cannot be adjusted either. If the smart transmitter was unqualified to begin with, adjusting its range using a handheld communicator will not make it qualified either; therefore, the smart transmitter still needs to be calibrated by applying a pressure signal before it can be used.
Both the zero point and range of the smart transmitter can be set and modified on the handheld communicator. However, the smart transmitter still needs to be calibrated using a pressure signal, as modifying the parameters does not indicate that the transmitter is qualified; only calibration with a pressure signal can determine whether the pressure transmitter is suitable for use.
Since the zero point and range of an intelligent transmitter can be set and modified on a handheld communicator, is it still necessary to use a pressure signal to calibrate the intelligent transmitter? Why? Answer: The zero point (including zero-point offset in both positive and negative directions) and range of the smart transmitter can be set and modified on the handheld communicator. However, it is not possible to tell from the handheld communicator whether the distant setting is correct, and therefore it cannot be adjusted either. If the smart transmitter was unqualified to begin with, adjusting its range using a handheld communicator will not make it qualified either; therefore, the smart transmitter still needs to be calibrated by applying a pressure signal before it can be used.