Partial Proof Test, Patc Diagnostics Not Enabled; Comprehensive Proof Test, Patc Diagnostics Not Enabled - Emerson Rosemount 3051S Series Reference Manual

Safety Instrumented System
October 2018
6.4.2

Partial proof test, PATC diagnostics not enabled

The simple suggested proof test consists of a power cycle plus reasonability checks of the transmitter
output. Reference the FMEDA
Required tools: Field Communicator and mA meter.
Steps for partial proof test
1. Bypass the safety function and take appropriate action to avoid a false trip.
2. Use HART communications to retrieve any diagnostics and take appropriate action.
3. Send a HART command to the transmitter to go to the high alarm current output and verify that the
analog current reaches that value
4. Send a HART command to the transmitter to go to the low alarm current output and verify that the
analog current reaches that value
5. Remove the bypass and otherwise restore normal operation.
6. Place the security switch in the locked position.
6.4.3

Comprehensive proof test, PATC diagnostics not enabled

The comprehensive proof test consists of performing the same steps as the simple suggested proof test
but with a two point verification of the pressure sensor. Reference the FMEDA
possible DU failures in the device.
Required tools: Field Communicator, mA meter, and pressure calibration equipment.
Steps for comprehensive proof test
1. Bypass the safety function and take appropriate action to avoid a false trip.
2. Use HART communications to retrieve any diagnostics and take appropriate action.
3. Send a HART command to the transmitter to go to the high alarm current output and verify that the
analog current reaches that value
4. Send a HART command to the transmitter to go to the low alarm current output and verify that the
analog current reaches that value
5. Perform a two-point verification of the sensor (see
the full working range and verify the current output at each point.
6. Remove the bypass and otherwise restore normal operation.
7. Place the security switch in the locked position.
Note
The user determines the proof test requirements for impulse piping.
Automatic diagnostics are defined for the corrected % DU: the tests performed internally by the device
during runtime without requiring enabling or programming by the user.
1. This tests for possible quiescent current related failures.
2. This tests for compliance voltage problems, such as low loop power supply voltage or increased wiring distance. This also tests for other possible failures.
96
Report for percent of possible DU failures in the device.
(1)
. See "Alarm level verification" on page
(2)
.
(1)
. See "Alarm level verification" on page 32
(2)
.
"Calibration for HART
Reference Manual
00809-0100-4801, Rev HA
32.
Report for percent of
®
Protocol" on page 73) over
Safety Instrumented System