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Reference Manual
00809-0100-4021, Rev DA
November 2004
6-7
Rosemount 3144P
Certified SIS
Proof test intervals are based on sensor failure rates from the Safety
Equipment Reliability Handbook, exida.com, 2003. A low stress environment
is assumed, with 30% of SIL 2 PFDavg limit budgeted for the transmitter and
sensor element. See the FMEDA report for additional details or references.
Inspection The 3144P is repairable by major component replacement.
Visual Inspection
Not required
Special Tools
Not required
Product Repair
All failures detected by the transmitter diagnostics or by the proof-test
must be reported. Feedback can be submitted electronically at
www.rosemount.com/safety/safetytechinfo.htm (mail button).
SPECIFICATIONS The 3144P SIS must be operated in accordance to the functional and
performance specifications provided in the 3144P Product Data Sheet
(document number 00813-0100-4021) or in Appendix A: Reference Data.
Failure Rate Data The FMEDA report includes failure rates, common cause Beta factor
estimates, and independent information on generic sensor models.
The report is available at www.rosemount.com/safety/safetytechinfo.htm.
Product Life 50 years – based on worst case component wear-out mechanisms –
not based on wear-out of process sensors.
Report any safety related product information at
http://www.rosemount.com/safety/safetytechinfo.htm.
SPARE PARTS These spare parts are available for the safety certified transmitter only.
Table 6-2. Proof test interval guideline
Sensors SFF Abbreviated Proof Test Extended Proof Test Notes
4-wire RTD 97.7% 10 years 10 years
T/C 94.7%
1 year 10 years
2 years 2 years
Dual T/C 99.6% 10 years 10 years Using U3 Drift Alert Alarm & HotBackup
Dual 3-wire RTD 98.9% 10 years 10 years Using U3 Drift Alert Alarm & HotBackup
T/C & 3-wire RTD 99.3% 10 years 10 years Using U3 Drift Alert Alarm & HotBackup
Description Part Number
Safety Certified electronics module assembly (single sensor configuration) 03144-1601-0001
Safety Certified electronics module assembly (dual sensor configuration) 03144-1601--0002