Reference Manual
00809-0100-4021, Rev FB
August 2011
6-3
Rosemount 3144P
Certified SIS
OPERATION AND
MAINTENANCE
Proof Test
The following proof tests are recommended. In the event that an error is found
in the safety functionality, proof test results and corrective actions taken must
be documented at www.rosemount.com/safety.
Use "Table 3-1: Fast Key Sequence" to perform Loop Test, Review – Device
Variables, and view Status.
The required proof test intervals depends upon the transmitter configuration
and the temperature sensor(s) in use. Guidance is available in Table 6-1 on
page 6-4. Refer to the FMEDA report for further information.
Abbreviated Proof Test
Conducting the Abbreviated Proof Test detects approximately 63% of
transmitter DU failures, and approximately 90% of temperature sensor(s) DU
failures, not detected by the 3144P safety-certified automatic diagnostics, for
a typical overall assembly coverage of 72%.
1. Using Loop Test, enter the milliampere value representing a high alarm
state.
2. Check the reference meter to verify the mA output corresponds to the
entered value.
3. Using Loop Test, enter the milliampere value representing a low alarm
state.
4. Check the reference meter to verify the mA output corresponds to the
entered value.
5. Use a Field Communicator to view detailed device status to ensure no
alarms or warnings are present in the transmitter.
6. Check that sensor value(s) are reasonable in comparison to a basic
process control system (BPCS) value.
7. Document the test results per the plant’s requirements.
Extended Proof Test
Conducting the Extended Proof Test, which includes the Abbreviated Proof
Test, detects approximately 96% of transmitter DU failures and approximately
99% of temperature sensor(s) DU failures, not detected by the 3144P
safety-certified automatic diagnostics, for a typical overall assembly coverage
of 97%.
1. Execute the Abbreviated Proof Test.
2. Perform a minimum two point sensor verification check. If two sensors
are used, repeat for each sensor. If calibration is required for the
installation, it may be done in conjunction with this verification.
3. Verify that the housing temperature value is reasonable.
4. Document the test results per the plant’s requirements.
Aotewell Ltd
www.aotewell.com
Industry Automation
HongKong|UK|China
+86-755-8660-6182
