Rosemount 8712, Справочное руководство

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Reference Manual
00809-0100-4664, Rev BA
January 2010
Rosemount 8712
4-2
Empty Pipe
Turn the empty pipe diagnostic on or off as required by the application. For
more details on the empty pipe diagnostic, see Appendix C: "Diagnostics".
High Process Noise
Turn the high process noise diagnostic on or off as required by the
application. For more details on the high process noise diagnostic, see
Appendix C: "Diagnostics".
Grounding / Wiring
Turn the grounding / wiring diagnostic on or off as required by the application.
For more details on the grounding / wiring diagnostic, see Appendix C:
"Diagnostics".
Electronics Temperature
Turn the electronics temperature diagnostic on or off as required by the
application. For more details on the electronics temperature diagnostic, see
Appendix C: "Diagnostics".
Basic Diagnostics
The basic diagnostics menu contains all of the standard diagnostics and tests
that are available in the 8712 transmitter.
Self Test
The transmitter test initiates a series of diagnostic tests that are not performed
continuously during normal operation. It performs the following tests:
• Display Test
• RAM Test
• PROM Test
During the entire test, all outputs respond to flow signal. The test requires
about ten seconds to complete.
AO Loop Test
The AO Loop test allows you to drive the transmitter output to a desired
electrical current output on terminals 1 and 2. The user then has the ability to
independently measure the actual loop current against the desired level set
by the transmitter. On the LOI, the test will end after five minutes if the
transmitter is not returned to normal operation manually.
4 mA
Fix the analog loop current at 4 mA.
Field Comm. 1, 2, 1, 1
Field Comm. 1, 2, 1, 2
Field Comm. 1, 2, 1, 3
Field Comm. 1, 2, 1, 4
Field Comm. 1, 2, 2
Field Comm. 1, 2, 2, 1
LOI Key AUX. FUNCTION
Field Comm. 1, 2, 2, 2
LOI Key AUX. FUNCTION
Field Comm. 1, 2, 2, 2, 1