Instrumentation and control work starts with a clear description of the process, equipment and required outcome. For a repair, replacement or upgrade enquiry, the device model alone may not describe every requirement.
Identify the instrument and its application
Provide the tag number, manufacturer, full model code and nameplate photographs. Include the process datasheet and relevant drawings where available. Describe the measurement or control duty and the system to which the device connects.
Prepare the technical information
Required range, units and available calibration records.
Power supply, signal or communication details.
Process connection, installation conditions and required documentation.
The observed issue, alarms and maintenance history for repair enquiries.
Quantity, destination and target date for supply enquiries.
Separate supply, installation and commissioning
State whether the request is for a component, workshop repair, installation support or system testing. Identify interfaces with existing equipment and the records required at handover. Compatibility and acceptance criteria should be confirmed against the project documentation before the scope is finalized.