Emerson Micro Motion LNG Series, Configuration And Use Manual

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8 Transmitter operation
Topics covered in this chapter:
• Custody transfer
• Record the process variables
• View process variables
• View transmitter status using the status LED
• View and acknowledge status alerts
• Read totalizer and inventory values
• Start and stop totalizers and inventories
• Reset totalizers
• Reset inventories
8.1 Custody transfer
A custody transfer switch that controls custody transfer status is located inside the dual
processor.
When the switch is off
• The transmitter works under custody transfer unsecured mode
• The transmitter can be configured
• The status LED is red
• The A027 Security Breach alert is active
When the switch is on:
• The transmitter works under custody transfer secured mode
• The transmitter cannot be configured
• Unless there are alarms, the status LED is green
8.2 Record the process variables
Micro Motion suggests that you make a record of specific process variable measurements,
including the acceptable range of measurements, under normal operating conditions. This
data will help you recognize when the process or diagnostic variables are unusually high or
low, and may help you diagnose and troubleshoot application issues.
Procedure
Record the following process and diagnostic variables, under normal operating conditions.
Transmitter operation
Configuration and Use Manual 55