Getting Started- a Checklist

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چکیده

How many inputs need to be recorded? What types of inputs need to be recorded? Voltage and sensitivity Thermocouples RTD's Do different input types need to be recorded in the same unit? What type of recording is required? Continuous Multiplex scanning (what minimum scan cycle is required?) Is a communciation interface required? To transmit measured data to a computer For remote setup of recorder To connect to an external printer Is recorder to be bench style or panel mounting? What type of instrument power is available? Is log-type recording desirable instead of/in addition to trend recording? Is color differentiation available for trend lines? Is message printing required? Is the recorder to perform alarm functions? How many setpoints per channel? What types of alarms: threshold, rate delta? Are physical relay contacts available for external alarm output? Number required SIGNAL INPUTS Available input types Typical process recorders accept analog dc voltage inputs, thermocouple, or RTD temperature inputs or dry contact status input.

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تاریخ انتشار 2002