Rosemount P330, Installation And Operation Manual, Page: 18 / 92

Rosemount Model P330 Pressure Validator
2-6
Validation Connections The validation connections are located on the validator control panel.
Use these sockets to make electrical connections to the transmitter
being tested. Figure 2-3 shows the validation connections.
External Power vs. Validator
Power
If the transmitter is in an existing power loop, it is said to be
“externally powered.” If the transmitter needs to be powered by the
validator’s 24 V power supply, it is said to “validator powered.”
Connection diagrams are provided for both procedures where
applicable. Ensure that the correct settings are selected on the
validator for each test procedure.
Electrical Test Leads The validator is equipped with four test leads for validation testing. Use
the test leads as follows:
• The red test lead connects to the positive (+) connection on the
validator and transmitter.
• The black test lead connects to the negative (–) connection on the
validator and transmitter.
• The blue and the green test leads are not polarity sensitive and
can be used for either positive or negative connections.
Hard Keys
Display Panel
Function Keys
Enter Key
Validation
Connection
Sockets
Arrow Keys
FIGURE 2-3. Validation Connection
Sockets on Control Panel.