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Safety Manual
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March 2021
Rosemount™ 3051S Series of Instrumentation
Pressure, Flow, and Level Measurement
Page 2
Safety messages
NOTICE
Read this manual before working with the product. For personal and system safety, and for optimum product
performance, make sure you thoroughly understand the contents before installing, using, or maintaining this product.
See listed technical assistance contacts.
Customer Central
Technical support, quoting, and order-related questions.
United States - 1-800-999-9307 (7:00 am to 7:00 pm CST)
Asia Pacific- 65 777 211
Europe/ Middle East/Africa - 49 (8153) 9390
North American Response Center
Equipment service needs.
1-800-654-7768 (24 hours—includes Canada)
Outside of these areas, contact your local Emerson representative.
NOTICE
The content of this document is based on the English language version. Any differences in non-English versions should be resolved
in favor of the most current English version.
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Contents
March 2021
Contents
Chapter 1 Introduction.............................................................................................................. 5
1.1 Using this manual........................................................................................................................ 5
Chapter 2 Installation and commissioning..................................................................................7
2.1 Installation wiring considerations................................................................................................ 7
2.2 IEC 61508 relevant requirements.................................................................................................7
2.3 Failure rates according to IEC 61508 in FIT................................................................................... 7
2.4 SIS-certified firmware versions...................................................................................................10
2.5 Safety precautions.....................................................................................................................10
2.6 Installation in SIS applications....................................................................................................11
2.7 Configuring in SIS applications...................................................................................................11
Chapter 3 Proof tests................................................................................................................15
3.1 Partial proof test........................................................................................................................ 16
3.2 Comprehensive proof test......................................................................................................... 17
3.3 Partial proof test – PATC Diagnostics enabled............................................................................18
Chapter 4 Operating considerations.........................................................................................21
4.1 Reliability data........................................................................................................................... 21
4.2 Failure reporting........................................................................................................................ 22
4.3 Equipment replacement or disposal...........................................................................................22
Appendix A Terms and definitions...............................................................................................23
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1 Introduction
1.1 Using this manual
This document provides information about how to install, commission, and proof test a
Rosemount 3051S, Rosemount 3051S Advanced Diagnostics, Rosemount 3051S
MultiVariable™, and Rosemount 3051S Electronic Remote Sensor (ERS™) System to comply
with safety instrumented systems (SIS) requirements.
NOTICE
This manual assumes that the following conditions apply:
• transmitter has been installed correctly and completely according to the instructions in
the transmitter Reference Manual and Quick Start Guide
• installation complies with all applicable safety requirements
• operator is trained in local and corporate safety standards
Introduction
March 2021
Related documents
All product documentation is available at Emerson.com.
For more information, reference the following documents:
Transmitter Document
Rosemount 3051S
Rosemount 3051S with Advanced Diagnostics
Rosemount 3051S Quick Start Guide
Rosemount 3051S with Advanced Diagnostics Quick Start Guide
Rosemount 3051SMV MultiVariable Transmitter Reference Manual
Rosemount 3051S Electronic Remote Sensor (ERS) System Reference Manual
Reference Manual
Quick Start Guide
Quick Start Guide
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2 Installation and commissioning
Use this section to install and commission a Rosemount 3051S Pressure, Flow, and Level
Transmitter with SIS features.
2.1 Installation wiring considerations
Refer to the product reference manual for specifications and recommendations for proper
installation.
2.2 IEC 61508 relevant requirements
The Rosemount 3051S Pressure Transmitter, Rosemount 3051S Advanced Diagnostics,
Rosemount 3051S MultiVariable™ Transmitter, and Rosemount 3051S Electronic Remote
Sensor (ERS™) System are all certified per the relevant requirements of IEC 61508 or the
Route 2H approach.
March 2021
Systematic capability Random capability
SIL 3 capable Type B Element
Route 1H: SIL 2@HFT=0 SIL 3@HFT=1 (SFF ≥ 90%)
Route 2H (low demand): SIL 2@HFT=0 SIL 3@HFT=1 (SFF < 90%)
Route 2H (high demand): SIL 2@HFT=0 SIL 3@HFT=1 (SFF < 90%)
(1) Rosemount 3051S MultiVariable Transmitter not available with Route 1H.
(2) Only available with the Rosemount 3051S Advanced Diagnostics Transmitter (DA2 option).
(1)
2.3 Failure rates according to IEC 61508 in FIT
FIT = 1 failure/109 hours
Table 2-1: Failure Rates for Rosemount 3051S Pressure Transmitter (Software Rev.
7.0 and Above)
Transmitter Λ
Rosemount 3051S Coplanar DP and Gage 0 82 274 40
Rosemount 3051S Coplanar Absolute, In-line Gage
and Absolute
Rosemount 3051S Flow Meter based on 1195, 405, or
485 primaries
Rosemount 3051S Level Transmitter (w/o additional
seal)
SD
0 80 260 37
0 90 274 51
0 82 274 74
Λ
SU
Λ
DD
(2)
Λ
DU
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Table 2-2: Failure Rates for Rosemount 3051S Pressure Transmitter, Option Code DA2
(Software Rev. 7.0 and Above)
Transmitter Λ
SD
Λ
SU
Λ
DD
Λ
Rosemount 3051S Coplanar DP and Gage 0 6 685 34
Rosemount 3051S Coplanar DP and Gage with PATC
0 6 699 20
enabled
Rosemount 3051S Coplanar Absolute, In-line Gage
0 6 681 34
and Absolute
Rosemount 3051S Coplanar Absolute, In-line Gage
0 6 695 20
and Absolute with PATC enabled
Rosemount 3051S Flow Meter based on 1195, 405, or
0 14 685 45
485 primaries
Rosemount 3051S Level Transmitter (w/o additional
0 6 702 51
seal)
Table 2-3: Failure Rates for Rosemount 3051SMV MultiVariable Transmitter
(Software Rev. 3.0 and Above)
Transmitter Λ
SD
Rosemount 3051SMV_P1 0 74 902 104
Rosemount 3051SMV_P2 0 74 642 73
Rosemount 3051SMV_P3, 3051SMV_P5,
0 74 880 81
3051SMV_P6
Λ
SU
Λ
DD
Λ
DU
DU
Rosemount 3051SMV_P4, 3051SMV_P7,
0 74 620 50
3051SMV_P8
Rosemount 3051SMV_M1 0 74 987 150
Rosemount 3051SMV_M2 0 74 727 119
Rosemount 3051SMV_M3 0 74 831 127
Rosemount 3051SMV_M4 0 74 705 95
Rosemount 3051SFA1, 3051SFC1, 3051SFP1 – High
0 82 987 161
Trip (normal conditions)
Rosemount 3051SFA1, 3051SFC1, 3051SFP1 – Low
0 84 987 159
Trip (normal conditions)
Rosemount 3051SFA2, 3051SFC2, 3051SFP2 – High
0 82 727 130
Trip (normal conditions)
Rosemount 3051SFA2, 3051SFC2, 3051SFP2 – Low
0 84 727 128
Trip (normal conditions)
Rosemount 3051SFA3, 3051SFC3, 3051SFP3 – High
0 82 831 138
Trip (normal conditions)
Rosemount 3051SFA3, 3051SFC3, 3051SFP3 – Low
0 84 831 136
Trip (normal conditions)
Rosemount 3051SFA4, 3051SFC4, 3051SFP4 – High
0 82 705 106
Trip (normal conditions)
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Installation and commissioning
March 2021
Table 2-3: Failure Rates for Rosemount 3051SMV MultiVariable Transmitter
(Software Rev. 3.0 and Above) (continued)
Transmitter Λ
Rosemount 3051SFA4, 3051SFC4, 3051SFP4 – Low
SD
0 84 705 104
Λ
SU
Λ
DD
Trip (normal conditions)
Rosemount 3051SFA5, 3051SFC5, 3051SFP5 – High
0 82 902 115
Trip (normal conditions)
Rosemount 3051SFA5, 3051SFC5, 3051SFP5 – Low
0 84 902 113
Trip (normal conditions)
Rosemount 3051SFA6, 3051SFC6, 3051SFP6 – High
0 82 642 84
Trip (normal conditions)
Rosemount 3051SFA6, 3051SFC6, 3051SFP6 – Low
0 84 642 82
Trip (normal conditions)
Rosemount 3051SFA7, 3051SFC7, 3051SFP7 – High
0 82 880 92
Trip (normal conditions)
Rosemount 3051SFA7, 3051SFC7, 3051SFP7 – Low
0 84 880 90
Trip (normal conditions)
Table 2-4: Failure Rates for Rosemount 3051S Electronic Remote Sensors (ERS)
System (Software Rev. 57 and Above)
Transmitter Λ
Rosemount 3051SAM Models for ERS System (no seals)
Primary – Coplanar Differential and Coplanar Gage
0 319 897 131
Secondary – Coplanar Differential and Coplanar Gage
SD
Λ
SU
Λ
DD
Λ
DU
Λ
DU
Primary – Coplanar Differential and Coplanar Gage
Secondary – Coplanar Absolute, In-line Gage and In-
line Absolute
Primary – Coplanar Absolute, In-line Gage and In-line
Absolute
Secondary – Coplanar Differential and Coplanar Gage
Primary – Coplanar Absolute, In-line Gage and In-line
Absolute
Secondary – Coplanar Absolute, In-line Gage and Inline Absolute
Rosemount 3051SAL Models for ERS System
Primary – Coplanar Differential and Coplanar Gage
Secondary – Coplanar Differential and Coplanar Gage
Primary – Coplanar Differential and Coplanar Gage
Secondary – Coplanar Absolute, In-line Gage and In-
line Absolute
Primary – Coplanar Absolute, In-line Gage and In-line
Absolute
Secondary – Coplanar Differential and Coplanar Gage
0 237 996 114
0 237 996 114
0 156 1095 97
0 350 897 169
0 268 996 151
0 268 996 151
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Table 2-4: Failure Rates for Rosemount 3051S Electronic Remote Sensors (ERS)
System (Software Rev. 57 and Above) (continued)
Transmitter Λ
Primary – Coplanar Absolute, In-line Gage and In-line
Absolute
Secondary – Coplanar Absolute, In-line Gage and Inline Absolute
Rosemount 3051SAL and 3051SAM (w/ attached 1199 seal) Models for ERS System
Primary – Coplanar Differential and Coplanar Gage
Secondary – Coplanar Differential and Coplanar Gage
Primary – Coplanar Differential and Coplanar Gage
Secondary – Coplanar Absolute, In-line Gage and In-
line Absolute
Primary – Coplanar Absolute, In-line Gage and In-line
Absolute
Secondary – Coplanar Differential and Coplanar Gage
Primary – Coplanar Absolute, In-line Gage and In-line
Absolute
Secondary – Coplanar Absolute, In-line Gage and Inline Absolute
SD
0 186 1095 134
0 355 897 175
0 273 996 158
0 273 996 158
0 191 1095 140
2.4 SIS-certified firmware versions
Λ
SU
Λ
DD
Λ
DU
Emerson maintains an SIS-compliant modification process. Changes made after initial
release do not affect overall SIS certification.
Version information can be viewed on the handheld communicator or AMS at Home →
Overview → Device information → Revisions.
2.5 Safety precautions
Prior to making any changes to any Rosemount 3051S Transmitter, such as changing the
configuration or replacing the sensor, take appropriate action to avoid a false trip by
electronically bypassing the safety Programmable Logic Controller (PLC).
Important
Ensure alternate means are in place to maintain the process in a safe state.
WARNING
If the transmitter is in a classified area, do not open the wiring compartment unless the
power to the transmitter has been removed or unless the area has been declassified.
Contact customer support for further information.
Prior to placing the transmitter online and removing the bypass from the safety PLC, verify
the transmitter configuration and all safety parameters.
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2.6 Installation in SIS applications
Installations are to be performed by qualified personnel. No special installation is required
in addition to the standard installation practices outlined in the applicable product
manual.
Environmental and operational limits are available in the product manual.
The loop should be designed so the terminal voltage does not drop below the following
values when the transmitter output is 23.0 mA:
• Rosemount 3051S: 10.5 Vdc
• Rosemount 3051S with Advanced Diagnostics (option code DA2): 12 Vdc
• Rosemount 3051SMV MultiVariable™: 12 Vdc
• Rosemount 3051S Electronic Remote Sensor (ERS™) System: 16 Vdc
2.7 Configuring in SIS applications
Installation and commissioning
March 2021
Use any HART® capable configuration tool to communicate with and verify configuration
of the transmitter.
Note
Transmitter output is not safety-rated during the following: configuration changes,
multidrop, and loop test. Alternative means should be used to ensure process safety
during transmitter configuration and maintenance activities.
2.7.1 Damping
User-selected damping will affect the transmitter's ability to respond to changes in the
applied process. The damping value + response time must not exceed the loop
requirements.
2.7.2 Alarm and saturation levels
DCS or safety logic solver should be configured to handle both High alarm and Low alarm.
In addition, the transmitter must be configured for High or Low alarm.
Figure 2-1 identifies the alarm levels available and their operation values.
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A
B
3.9 mA
(3)
4 mA 20 mA 21.75 mA
(2)
3.75 mA
(1)
20.8 mA
(4)
C
B
3.8 mA
(3)
4 mA 20 mA 22.5 mA
(2)
3.6 mA
(1)
20.5 mA
(4)
D
B
4 mA 20 mA 20.2 - 23.0 mA
(2)
3.6 - 3.8 mA
(1)
3.7 - 3.9 mA
(3)(5)
20.1 - 21.5 mA
(4)(6)
Installation and commissioning
March 2021
Figure 2-1: Alarm Levels and Operation Values
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A. Rosemount alarm level
B.
Normal operation
C. Namur alarm level
D. Custom alarm level
1. Transmitter failure, hardware or software alarm in Low position.
2. Transmitter failure, hardware or software alarm in High position.
3. Low saturation
4. High saturation
5. High alarm must be at least 0.1 mA higher than the high saturation value.
6. Low alarm must be at least 0.1 mA lower than the low saturation value.
Setting the alarm values and direction varies whether the hardware switch option is
installed. You can use a HART® master or communicator to set the Alarm and Saturation
values.
Configure alarm and saturation levels
Use this procedure to configure alarm and saturation levels with a Field Communicator or
AMS Device Manager.
Procedure
1. Select Home → Configure → Manual setup
levels.
2. Configure alarm direction.
→ Configure alarm and saturation
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Installation and commissioning
March 2021
• To configure alarm direction for fail high, position the Plantweb housing switch
in the HI position.
• To configure alarm direction for fail low, position the Plantweb housing switch in
the LO position.
A. Security
B. Alarm
CAUTION
If hardware security switches are not installed, security should be ON in the
software to prevent accidental or deliberate change of configuration data during
normal operation.
2.7.3 Diagnostics
The Rosemount 3051S has multiple diagnostic features related to transmitter operation
and performance. The transmitter performs each diagnostic at least every 60 minutes. If
the diagnostics detect a failure or fault condition, the transmitter will change the 4-20 mA
analog output if applicable. The applicable product manual provides a complete list of
these diagnostics and corresponding changes.
2.7.4 Enable or disable product security
If hardware security switches are installed, the security switch should be in the ON position
during normal operation. Follow this procedure to set hardware security.
WARNING
Do not remove the transmitter covers in explosive atmospheres when the circuit is live.
Procedure
1. Select Home → Overview
2. If the transmitter is live, set the loop to manual and remove power.
3. Remove the electronics compartment cover, opposite the field terminal side on the
Plantweb housing.
→ Device information → Security.
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4. Reposition the switches as desired for the specific housing compartment. Slide the
security and alarm switches into the preferred position by using a small screwdriver.
(An LCD display or an adjustment module must be in place to activate the switches).
A. Security
B. Alarm
CAUTION
If hardware security switches are not installed, security should be ON in the
software to prevent accidental or deliberate change of configuration data during
normal operation.
5. Re-install the transmitter cover. Transmitter covers must be fully engaged to meet
explosion-proof requirements.
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3 Proof tests
Proof tests detect transmitter failures that are not detected by transmitter diagnostics,
mainly undetected failures that prevent the safety instrumented function from operating
correctly.
Reliability calculations for your transmitter model’s safety instrumented functions
determine the frequency of proof testing, or the proof test interval.
The proof tests must be performed at least as frequently as the calculation specifies to
maintain the required safety instrumented function integrity.
Table 3-1: Rosemount 3051S Transmitter
Proof tests
March 2021
Type Meas.
type
Comprehensive A 92 3 Yes Yes No
B 95 2 Yes Yes No
Partial A 52 19 Yes No Yes
B 62 14 Yes No Yes
(1) A = Coplanar, B = Inline
(1)
Proof test
coverage
(%) of DU
Remaining
DU failures
Test coverage Can be
Output
circuitry
Meas.
electronics
performed
remotely
Table 3-2: Rosemount 3051S Transmitter with Advanced Diagnostics (option DA2)
Type Meas.
type
Comprehensive A, B 87 4 Yes Yes No
Partial A, B 78 7 Yes No Yes
Partial w/PATC A, B 78 4 Yes No Yes
(1) A = Coplanar, B = Inline
(1)
Proof test
coverage
(%) of DU
Remaining
DU failures
Test coverage Can be
Output
circuitry
Meas.
electronics
performed
remotely
Table 3-3: Rosemount 3051SMV MultiVariable™ Transmitter
Type Meas.
type
Comprehensive A, B 90 Refer to
Partial A, B 48 Yes No Yes
(1) A = Coplanar, B = Inline
(1)
Proof test
coverage
(%) of DU
Remaining
DU failures
page 8
Test coverage Can be
Output
circuitry
Yes Yes No
Meas.
electronics
performed
remotely
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Proof tests
March 2021
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Table 3-4: Rosemount 3051S Electronic Remote Sensor (ERS™) System
Type Meas.
type
Comprehensive A, B 87 Refer to
(1) A = Coplanar, B = Inline
(1)
Proof test
coverage
(%) of DU
3.1 Partial proof test
The partial proof test consists of a power cycle plus reasonability checks of the transmitter
output.
3.1.1 Perform partial proof test
Prerequisites
Ensure there are no alarms or warnings present in the transmitter: Service Tools → Alerts.
Procedure
1.
Bypass the safety function and take appropriate action to avoid a false trip.
2. Simulate 4.00 mA output and verify loop current.
a) Select Service Tools → Simulate.
Remaining
DU failures
page 9
Test coverage Can be
Output
circuitry
Yes Yes No
Meas.
electronics
performed
remotely
b) Select Loop Test.
c) Select 4 mA and then select Start.
d) Measure loop current (I.e. reading at the safety logic solver or using the TEST
terminal).
Note
The inaccuracy of the safety logic solver or current meter needs to be
considered.
e) Verify the current deviation is within the safety deviation of 2% (+-0.32 mA).
f) Select
Stop to end loop test.
3. Simulate 20.00 mA output and verify loop current.
a) Select Service Tools
b) Select
Loop Test.
c) Select 20 mA
→ Simulate.
and then select Start.
d) Measure loop current (i.e. reading at the safety logic solver or using the TEST
terminal).
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Note
The inaccuracy of the safety logic solver or current meter needs to be
considered.
e) Verify the current deviation is within the safety deviation of 2% (+-0.32 mA).
f)
Select Stop to end loop test.
4. Remove the bypass and otherwise restore normal operation.
5. Place the security switch in the locked position.
3.2 Comprehensive proof test
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.
3.2.1 Perform comprehensive proof test
Proof tests
March 2021
Prerequisites
Ensure there are no alarms or warnings present in the transmitter: Service Tools → Alerts.
Procedure
Bypass the safety function and take appropriate action to avoid a false trip.
1.
2. Simulate 4.00 mA output and verify loop current.
a) Select Service Tools → Simulate.
b) Select Loop Test.
c) Select 4 mA and then select Start.
d) Measure loop current (I.e. reading at the safety logic solver or using the TEST
terminal).
Note
The inaccuracy of the safety logic solver or current meter needs to be
considered.
e) Verify the current deviation is within the safety deviation of 2% (+-0.32 mA).
f) Select
3. Simulate 20.00 mA output and verify loop current.
a) Select Service Tools
Stop to end loop test.
→ Simulate.
b) Select Loop Test.
c) Select
d) Measure loop current (i.e. reading at the safety logic solver or using the TEST
20 mA and then select Start.
terminal).
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Note
The inaccuracy of the safety logic solver or current meter needs to be
considered.
e) Verify the current deviation is within the safety deviation of 2% (+-0.32 mA).
f)
Select Stop to end loop test.
4. Inspect the transmitter for any leaks, visible damage or contamination.
5. Perform a two-point verification of the sensor over the full working range and verify
the current output at each point.
a) Select Service Tools → Variables → All Variables.
b) Apply a pressure to the transmitter equivalent to the low end of the
measurement range.
Note
For the Rosemount 3051S Electronic Remote Sensor (ERS™) System,
remaining steps should be completed for both PHI and PLO and a zero trim
should be performed on the DP.
c) Verify the current pressure or output reading with an independent
measurement is within the safety deviation of 2%.
Note
The inaccuracy of the safety logic solver or current meter needs to be
considered.
d) Apply a pressure to the transmitter equivalent to the high end of the
measurement range.
e) Verify the current pressure or output reading with an independent
measurement is within the safety deviation of 2%.
6. Remove the bypass and otherwise restore normal operation.
7. Place the security switch in the locked position.
3.3 Partial proof test – PATC Diagnostics enabled
When the Power Advisory and Transmitter Power Consumption (PATC) diagnostics are
enabled and alarm values configured, the testing functionality of the partial and
comprehensive proof test are performed automatically by the device. This eliminates the
need for the partial, and simplifies the comprehensive proof test, and thereby reduces the
total proof test workload.
3.3.1 Perform partial proof test
Prerequisites
Ensure there are no alarms or warnings present in the transmitter: Service Tools → Alerts.
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Procedure
1.
Bypass the safety function and take appropriate action to avoid a false trip.
2. Simulate 4.00 mA output and verify loop current.
a) Select Service Tools → Simulate.
b) Select Loop Test.
c) Select 4 mA and then select Start.
d) Measure loop current (I.e. reading at the safety logic solver or using the TEST
terminal).
Note
The inaccuracy of the safety logic solver or current meter needs to be
considered.
e) Verify the current deviation is within the safety deviation of 2% (+-0.32 mA).
f)
Select Stop to end loop test.
Proof tests
March 2021
3. Inspect the transmitter for any leaks, visible damage or contamination.
4. Perform a two-point verification of the transmitter over the full working range.
a) Select Service Tools → Variables → All Variables.
b) Apply a pressure to the transmitter equivalent to the low end of the
measurement range.
Note
For the Rosemount 3051S Electronic Remote Sensor (ERS™) System,
remaining steps should be completed for both PHI and PLO and a zero trim
should be performed on the DP.
c) Verify the current pressure or output reading with an independent
measurement is within the safety deviation of 2%.
Note
The inaccuracy of the safety logic solver or current meter needs to be
considered.
d) Apply a pressure to the transmitter equivalent to the high end of the
measurement range.
e) Verify the current pressure or output reading with an independent
measurement is within the safety deviation of 2%.
5. Remove the bypass and otherwise restore to normal operation.
6. Place the security switch in the locked position.
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4 Operating considerations
4.1 Reliability data
Operating considerations
March 2021
Safety deviation
Self-diagnostic test
interval
Transmitter response
time
Useful lifetime
4.1.1 FMEDA report
The Failure Mode, Effects, and Diagnostics Analysis (FMEDA) report is used to calculate the
failure rate. An FMEDA report for the Rosemount 3051S Pressure Transmitters contain:
• All failure rates and failure modes
• Common cause factors for applications with redundant devices that should be included
in reliability calculations
• Expected lifetime of your pressure transmitter, as the reliability calculations are valid
only for the lifetime of the equipment
The FMEDA report can be obtained with the following products:
The percent a failure could drift to be defined as a safe/
dangerous failure is ±2%
At least once every 60 minutes
Reference Appendix A in the device reference manual
50 years – based on worst case component wear-out
mechanisms – not based on wear-out of process wetted
materials derived from the FMEDA
• Rosemount 3051S Transmitter
• Rosemount 3051S with Advanced Diagnostics
• Rosemount 3051S MultiVariable Transmitter
• Rosemount 3051S with Electronic Remote Sensor (ERS) System
4.1.2 Environmental and application limits
See the transmitter
area limitations.
Using pressure transmitters outside environmental or application limits invalidates the
reliability data in the FMEDA report.
Product Data Sheet for performance, environmental, and hazardous
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Operating considerations
March 2021
Table 4-1: Transmitter Response Time
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3051S_C
3051SF_D
DP Ranges 2–5:
100 ms
Range 1: 255 ms
Range 0: 700 ms
3051S_T 3051SMV_ _1 or 2
3051SF_1, 2, 5, or 6
100 ms DP Range 1: 310 ms
DP Range 2: 170 ms
DP Range 3: 155 ms
AP and GP: 240 ms
3051SMV_ _3 or 4
3051SF_3, 4, or 7
DP Ranges 2–5:
145 ms
DP Range 1: 300 ms
DP Range 0: 745 ms
4.2 Failure reporting
If you detect any failures that compromise safety, contact customer service.
See
Emerson.com for complete contact information.
4.3 Equipment replacement or disposal
Follow the guidelines for equipment disposal as outlined in the product manual.
ERS System
(3051SAM)
360 ms
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A Terms and definitions
Terms and definitions
March 2021
λ
DU
λ
DD
λ
SU
λ
SD
Diagnostic test
interval
Element
FIT
FMEDA
HART® protocol
HFT
High demand
mode
Low demand
mode
Dangerous Undetected
Dangerous Detected
Safe Undetected
Safe Detected
The time from when a dangerous failure/condition occurs until the
device has set the safety related output in a safe state (total time
required for fault detection and fault reaction).
Term defined by IEC 61508 as “part of a subsystem comprising a
single component or any group of components that performs one or
more element safety functions”
Failure In Time per billion hours
Failure Modes, Effects and Diagnostic Analysis
Highway Addressable Remote Transducer
Hardware Fault Tolerance
The safety function is only performed on demand, in order to transfer
the EUC (Equipment Under Control) into a specified safe state, and
where the frequency of demands is greater than one per year (IEC
61508-4).
The safety function is only performed on demand, in order to transfer
the EUC into a specified safe state, and where the frequency of
demands is no greater than one per year (IEC 61508-4).
PFD
AVG
PFH
Proof test
coverage factor
Safety deviation
Average Probability of Failure on Demand
Probability of dangerous Failure per Hour: the term "probability" is
misleading, as IEC 61508 defines a rate.
The effectiveness of a proof test is described using the coverage
factor which specifies the share of detected dangerous undetected
failures (
effectiveness to detect dangerous undetected faults.
The maximum allowed deflection of the safety output due to a failure
within the device (expressed as a percentage of span).
Any failure causing the device output to change less than the Safety
Deviation is considered as a "No Effect" failure. All failures causing the
device output to change more than the Safety Deviation and with the
device output still within the active range (non-alarm state) are
considered dangerous failures.
λDU). The coverage factor is an indication of a proof test’s
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Safety ManualTerms and definitions
00809-0700-4801
Note
The Safety Deviation is independent of the normal performance
specification or any additional application specific measurement
error.
SIF
SIL
SIS
Systematic
capability
Transmitter
response time
Type B device
Useful lifetime
Safety Instrumented Function
Safety Integrity Level – a discrete level (one out of four) for specifying
the safety integrity requirements of the safety instrumented
functions to be allocated to the safety instrumented systems. SIL 4
has the highest level of safety integrity, and SIL 1 has the lowest level.
Safety Instrumented System – an instrumented system used to
implement one or more safety instrumented functions. An SIS is
composed of any combination of sensors, logic solvers, and final
elements.
A measure (expressed on a scale of SC 1 to SC 4) of the confidence
that the systematic safety integrity of an element meets the
requirements of the specified SIL, in respect of the specified element
safety function, when the element is applied in accordance with the
instructions specified in the compliant item safety manual for the
element.
The time from a step change in the process until transmitter output
reaches 90% of its final steady state value (step response time as per
IEC 61298-2).
Complex device using controllers or programmable logic, as defined
by the standard IEC 61508.
Reliability engineering term that describes the operational time
interval where the failure rate of a device is relatively constant. It is
not a term which covers product obsolescence, warranty, or other
commercial issues.
The useful lifetime is highly dependent on the element itself and its
operating conditions (IEC 61508-2).
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