During the process design phase, in the instrument selection table, should the instrument accuracy be specified by the process or by the instrument manufacturer?
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During the process design phase, in the instrument selection table, should the instrument accuracy be specified by the process or by the instrument manufacturer?
The process requires high precision, and the instruments determine their own precision levels.
In our company’s processes, normal operating conditions as well as the maximum and minimum values are specified; the accuracy of the instruments is determined by the instrument technicians
For instruments with specific precision requirements, such as mass flow meters, the precision varies depending on whether they are used solely for measurement or also for trade settlement; the process conditions must be specified to the instrument
From a normal perspective, the production department should provide the dimensions of the equipment as well as the desired operating ranges (such as temperature, pressure, flow rates, etc.), while the accuracy of the instruments should be specified by the personnel in charge of those instruments.
The process requires certain precision standards, such as at the control level and monitoring level; the specific precision levels are determined by the instrumentation team
The precision requirement is determined based on process parameters or hat settlement needs