Bettis Bettis RPE-Series SIL Manual Manuals & Guides

Bettis RPE-Series

SIL Safety Manual

SIL Safety Manual

DOC.SILM.BE.EN Rev. 1

March 2019

SIL Safety Manual

DOC.SILM.BE.EN Rev. 1

Table of Contents

Section 1: Introduction

Section 2: Functional Specification

Section 3: Configuration of the Product

Section 4: Service Condition Limitations (Limitation of Use)

Section 5: Expected Lifetime

Section 6: Failure Modes and Estimated Failure Rates

Table of Contents

March 2019

Section 7: Installation and Site Acceptance Procedure

Section 8: Periodic Test and Maintenance Requirements

8.1 General ........................................................................................................................................9

8.2 Full-Stroke Test ..........................................................................................................................9

8.3 Partial-Stroke Test ................................................................................................................. 12

8.4 Proof Test and Periodic Maintenance ............................................................................ 15

Section 9: Architectural Constraints

Section 10: Common Cause Factors

Section 11: Mean Repair Time

Section 12: Systematic Capability

ITable of Contents

Section 1: Introduction

March 2019

Section 1: Introduction

Purpose of this Safety Manual, written in compliance with IEC 61508-2, Annex D, is to give
all the necessary information to the system integrator for a correct use of the product in
Safety Instrumented Systems for SIL classied applications.

SIL Safety Manual

DOC.SILM.BE.EN Rev. 1

1

Introduction

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DOC.SILM.BE.EN Rev. 1

Section 2: Functional Specification

Section 2: Functional Specication

The safety function for Bettis RPE-Series pneumatic actuator is dened as follows:

Double-Acting Scenario:

a. When an unsafe condition is detected in a plant by a process sensor, the

controller, via actuator control system, drives the Actuator to close the
shut-down valve, depressurizing (if under pressure) the Opening side of
the actuator and pressurizing the Closing side of the actuator.

b. When an unsafe condition is detected in a plant by a process sensor, the

controller, via actuator control system drives the Actuator to open the
blow-down valve, depressurizing (if under pressure ) the Closing side
of the pneumatic actuator and pressurizing the Opening side of the
pneumatic actuator.

Single-Acting Scenario:

a. When an unsafe condition is detected in a plant by a process sensor, the

controller, via actuator control system drives the Actuator to rotate with
sucient torque to move a valve to its fail-safe state when hold-position
air pressure is released.

The Bettis brand Actuator Selection Procedure provides functional denition with specics
on input variables and performance.

March 2019

In any case, the choice of the safety function to be implemented is responsibility of the
system integrator.

Functional Specification

2

Section 3: Configuration of the product

March 2019

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DOC.SILM.BE.EN Rev. 1

Section 3: Conguration of the Product

The Bettis RPE-Series are pneumatically operated actuators designed to operate Ball / Plug
/ Buttery valves, automation of louvers and dampers & automation of any
quarter-turn mechanism. Both the double-acting and single-acting (spring-return) versions
of the Bettis RPE-Series pneumatic actuators are designed in such a way that there are no
moving parts on the outside (with the exception of the position indicator). This makes
them safe, easy to install and virtually maintenance free.

For further details about actuator congurations, please refer to the Bettis RPE-Series
product data sheets, Safety guide and Installation, Operation and Maintenance manual.

3

Configuration of the product

SIL Safety Manual

AB

A

B

A

B

A

B

Pistons Pistons

Pinion

DOC.SILM.BE.EN Rev. 1

Section 4: Service Condition Limitations (Limitation of Use)

March 2019

Section 4: Service Condition Limitations

(Limitation of Use)

The operating capabilities are listed below:

• Maximum Operating Pressure:

– Pneumatic Service

– Up to 120 psig (8.3 barg)

• Ambient Temperature:

Temperature extremes require dierent solutions to maintain actuator operational
integrity and reliability. For each Bettis RPE-Series actuator is available in three
dierent temperature executions.

– -20°C to +80°C (-4°F to +176°F) Standard temperature

– -10°C to +120°C (+14°F to +250°F) High Temperature

– -40°C to +80°C (-40°F to +176°F) Low Temperature

• Torque Output Range:

– Double-Acting Bettis RPE-Series actuators, requiring pressure to rotate in

either direction, are available with a torque range between 4.8 Nm
(44 lbf.in) and 6,490 Nm (59000 lbf.in)

– The Bettis RPE-Series spring-return models require pressure in only one

direction of travel and are suitable for air-fail close and air-fail to open
applications without modication. These models are available with a
spring end torque between 2 Nm (20 lbf.in) and 2394 Nm (21000 lbf.in)

• Safety Function:

For spring-return models, the safety function is self-evident performed by the
springs. The safety function of double-acting models should be performed by the
A-chamber for safety related systems.

Figure 1 Use the A-Chamber for Safety Related Systems on Double-Acting Actuators

Assembly Code: CW Assembly Code: CC

= Safety Function is = Safety Function is
Counterclockwise Rotation Clockwise Rotation

Service Condition Limitations (Limitation of Use)

4

Section 4: Service Condition Limitations (Limitation of Use)

March 2019

• Use of manual override:

The use of a manual override is not recommended in a SIL classied application, as
it results in a bypass of the safety function. In case the manual override is used, the
following requirements must be fullled, or the Functional Safety Certication will
become invalid:

– The manual override shall be protected to prevent unauthorized use.

(e.g. by key locks in conjunction with eective management controls.).

– The users authorized to operate on the actuator shall be skilled personnel;

– The maximum duration of the manual override shall be dened.

– If necessary, compensatory measures to allow the safe operation of the

process shall be dened (responsibility of the nal user).

• When test or bypass facilities are included in the SIS (safety integrated system),

they shall conform with the following:

– The SIS shall be designed in accordance with the maintenance and testing

requirements dened in the
SRS (safety requirement specication).

– The operator shall be alerted to the bypass of any portion of the SIS via an

alarm or operating procedure.

Before selecting remote operating mode control of actuator, the manual override must be
disengaged according to the relevant Installation, Operation and Maintenance Manual.

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DOC.SILM.BE.EN Rev. 1

The position selected (remote/automatic control or local /manual control) can be achieved
with a specic technical solution that does not allow to reach an intermediate position
lever’s and avoids unintentional activation.

The engagement of the manual override shall be signaled, at least locally, according to
IOM. As optional request from nal user, to determine if the manual override is engaged, an
electrical signal using contact switching can be provided to communicate the status to the
control room.

• Loss of utility:

For double acting congurations that on loss of utility (e.g., electrical power,
or pneumatic supply) does not fail to the safe state a system for detecting and
alarming of loss of utility and SIS circuit integrity shall be implemented. (e.g., end­of-line monitoring, supply pressure measurement), and action taken according to
par. 11.3 of IEC. 61511-1.

5

Service Condition Limitations (Limitation of Use)

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DOC.SILM.BE.EN Rev. 1

Section 5: Expected Lifetime

Actuator lifetime (for which failure rates indicated in Section 6 are ensured) strongly
depends on operating conditions.

For normal service conditions, Bettis RPE-Series actuators can be in good conditions also
after more than 10 years with planned minimum maintenance. Normal working life is

500.000 cycles. Bettis RPE-Series carry a warranty period of:

• 18 months after delivery if properly stored in conditions that we declare or

• 12 months after installation on site.

Section 5: Expected Lifetime

March 2019

Expected Lifetime

6

Section 6: Failure Modes and Estimated Failure Rates

March 2019

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Section 6: Failure Modes and Estimated

Failure Rates

Table 1. Failure Modes and Estimated Failure Rates – Bettis RPE-Series Actuator

Configuration Safety Function λDU [1/h] λDD [1/h] λS [1/h]

RPE- No PST 1

RPE - With PST 1

NOTE:

• No internal diagnostics is included in the product.

• The above failure rates are guaranteed:

- For the service conditions listed in Section 4.

- For the expected lifetime declared in Section 5.

- Considering the periodic test and maintenance included in Section 8.

The failure rates are determined performing a FMEDA based on the failure rates of
components taken from industrial databases (NPRD-2016/FMD97/2016, EXIDA E&MCRH
and NSWC-2011), integrated with eld feedback using the Bayesian statistical approach
mentioned in IEC 61508-2 Par. 7.4.4.3.3.

The system for reporting failures is based on eld feedback from end users, with:

- Identication of the claim/failure

- Root cause analysis to identify cause and responsibility of the failure

- Identication of the possible eect of the failure on the Safety Function

- Classication of the failure considering the failure categories of IEC 61508-2

(Safe, Dangerous, No Eect) Customer Service, Quality and Technical
Department are responsible for the procedure, according to the respective role.

2,55E-08 0,00E+00 0,00E+00
2,29E-09 2,.32E-08 0,00E+00

7

Failure Modes and Estimated Failure Rates

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DOC.SILM.BE.EN Rev. 1

Section 7: Installation and Site Acceptance Procedure

Section 7: Installation and Site

Acceptance Procedure

Any necessary installation and site acceptance procedures are discussed in the
Bettis RPE-Series actuators Installation, Operation and Maintenance manual.
The Installation, Operation and Maintenance manual denes exercising of the actuator
after installation and denes testing after maintenance.

March 2019

Installation and Site Acceptance Procedure

8

Section 8: Periodic Test and Maintenance Requirements

March 2019

Section 8: Periodic Test and

Maintenance Requirements

8.1 General

Please consider that the information in this paragraph are relevant only in regards of
Reliability Tests; please refer to the Installation, Operation and Maintenance manual for
detailed information about product maintenance, handling and storage. Diagnostic tests
may be made to increase the system reliability (Full-Stroke or Partial-Stroke Test). “On site”
tests depend on Project/Plant facilities requirements; however, a functional test must be
executed on site, prior actuator operation.

8.2 Full-Stroke Test

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DOC.SILM.BE.EN Rev. 1

The “Full Stroke Test” (“On-line”) must be performed to satisfy the PFD
(average probability of failure on demand) value.

The full test frequencies will be dened by the nal integrator in relation to the dened
PFD

to be achieved.

AVG

• Procedure:

– Operate the Actuator/Valve assembly for 2 complete open/close cycles

with complete closing of the valve.

– Verify the Correct performing of open – close manoeuvre and within the

required operating times (eg. check locally, or automatically via Logic
solver, the correct movement of the actuator/valve).

– Compare the results with the ones stored during SAT

(site acceptance test) activities.

– Record the test results in your company’s SIF

(safety instrumented function) database.

– Restore normal operation.

Considering the application of the above described Full Stroke Test procedure, the “Test
Coverage”, in case of automatic procedure, can be considered > 99%.

In case of manual procedure the “Test Coverage” shall take into account also the test
imperfection and the reliability/competence of the operator.

AVG

9

Periodic Test and Maintenance Requirements

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Section 8: Periodic Test and Maintenance Requirements

March 2019

NOTE:

• If the test is automatic, then the Test Coverage is PTC (proof test coverage), but can

also considered as DC (diagnostic coverage).

• If the test is manual, then the Test Coverage is PTC, but cannot be considered as DC.

The procedure can be performed manually or automatically. In the following,
for both cases, the following points are listed:

• Parameters to be measured

• Instruments to be used

• Failure modes detected

• Diagnostic Coverage/Proof Test Coverage

Parameters to be measured:
The following parameters have to be measured for an eective Full Stroke Test:

• Angular position of the shaft;

• Time necessary to reach to nal position;

• Output torque (as indirect measure, by means of the of pressure measurement in the

cylinder chamber)

NOTE:

Not all parameters are needed, but the following combinations can be used:

1. Measurement of angular position as function of time

(pressure measurement is optional)

2. Measurement of cylinder chamber pressure as function of time

3. Verication of nal position achievement in the established maximum time.

Periodic Test and Maintenance Requirements

10

Section 8: Periodic Test and Maintenance Requirements

March 2019

Table 2. Instruments/equipment to be used for the test

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DOC.SILM.BE.EN Rev. 1

Quantity

Angular position of
the shaft

Time necessary
to reach the nal
position

Output torque
(Pressure in the
cylinder)

Instruments/equipment

Automatic Procedure Manual Procedure

Case A

Use of a Logic Solver:

1. Limit switches box, or 4÷20 mA
position transmitter

2. Digital Input Module / Analog Input
Module included in the Logic Solver

3. Application Software function
(to compare the actual trend with the
one stored during SAT )
Case B
Use of a Partial stroke testing device:

1. Limit switches box, or 4÷20 mA
position transmitter

2. Partial stroke testing device with
integrated Software function

As above

Case A
Use of a Logic Solver:

1. Pressure transmitter connected to
the cylinder chamber

2. Analog Input Module included in
the Logic Solver

3. Application Software function
(to compare the actual trend with the
one stored during SAT )
Case B
Use of a Partial stroke testing device:

1. Pressure transmitter connected to
the cylinder chamber

2. Partial stroke testing device with inte­grate Software function

1. Limit switches box, and/or
visual indication

2. Skilled and trained
personnel

1. Limit switches box, and/or
visual indication

2. Chronometer

3. Skilled and trained
personnel

Skilled and trained
personnel (to check audible
partial sticking)

11

Table 3. Failure mode detectable by the test

Component

Automatic Procedure Manual Procedure

Detectable failure modes

Housing Breakage
End cap Breakage

Piston

Rack

Pinion

Spring

Stroke adjustment

Breakage
Sticking

Breakage
Binding

Breakage
Binding

Breakage
Weakened

Breakage
Bended

As per automatic procedure

Periodic Test and Maintenance Requirements

SIL Safety Manual

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Section 8: Periodic Test and Maintenance Requirements

NOTE:

• The ones listed above are the major failure modes of the main components

• In case of manual procedure, the detectable failure modes are the same as per

automatic procedure. The test coverage is lower than the one for automatic mode,
due to the human factor.

• The manual procedure cannot be considered as diagnostic.

8.3 Partial-Stroke Test

March 2019

The “Partial Stroke Test” (“On-line”) can be performed to improve the PFD

AVG

value.

For the execution of a partial stoke test the actuator performs a partial open-close cycle
operation, typically a 15-25 degrees rotation of the valve, in order to check the correct
functioning of the actuator and the correct movement of the valve (not sticking and able
to move).

The “Partial Stroke Test” (“On line”) can be performed to satisfy PFD

(average probability

AVG

of failure on demand) value.

• Recommended Test Interval = 1 to 3 months.

• Procedure:

– Operate the actuator to perform N°2 partial open/close cycles, to verify

the correct functioning of the actuator/valve assembly;

– Verify that the partial stroke manoeuvre was performed correctly and

within the expected time;

– Verify the Correct performing of partial stroke operation and within the

expected time; (eg. check locally, or automatically via Logic solver, or via
the Partial stroke testing system the correct movement of the actuator/
valve assembly)

– Inspect the actuator components for any leakages (internal and external).

• The procedure can be performed manually or automatically. In the following, for

both cases, the following points are listed:

– Parameters to be measured

– Instruments to be used

– Failure modes detected

– Diagnostic Coverage/Proof Test Coverage

The above parameters to check will depend from the partial stroke test system available.
Considering the application of the above described Partial Stroke Test procedure,
the “Diagnostic Coverage” is >90 %.
In case of manual procedure the “Test Coverage” shall take into account also the test
imperfection and the reliability/competence of the operator.

Periodic Test and Maintenance Requirements

12

Section 8: Periodic Test and Maintenance Requirements

March 2019

NOTE:

• If the test is automatic, then the Test Coverage can also considered as DC.

• If the test is manual, then the Test Coverage cannot be considered as DC.

Parameters to be measured:
The following parameters have to be measured for an eective Partial Stroke Test:

• Angular position of the shaft;

• Time necessary to reach to nal position;

• Output torque (as indirect measure, by means of the of pressure measurement in the

cylinder chamber)

NOTE:

Not all parameters are needed, but the following combinations can be used:

1. Measurement of angular position as function of time

(pressure measurement is optional).

2. Measurement of cylinder chamber pressure as function of time.

3. Verication of nal position achievement in the established maximum time.

The parameters to be measured depend upon the partial stroke test system available.
Instruments / equipment to be used for the test:

The Partial Stroke Test can be executed in the following way:

1. Using commercial Partial stroke testing device, measuring/verifying:

a. Measurement of angular position as function of time.
b. Measurement of cylinder chamber pressure as function of time (optional).
c. Verication of nal position achievement in the established maximum time.

2. By means of Logic Solver, measuring/verifying:

a. Measurement of angular position as function of time.
b. Measurement of cylinder chamber pressure as function of time (optional).
c. Verication of nal position achievement in the established maximum time.

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Periodic Test and Maintenance Requirements

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Section 8: Periodic Test and Maintenance Requirements

Table 4. Instruments/equipment to be used for the test

March 2019

Quantity

Angular position of
the shaft

Time necessary
to reach the nal
position

Output torque
(Pressure in the
cylinder)

Instruments/equipment

Automatic Procedure Manual Procedure

Case A

Use of a Logic Solver:

1. Limit switches box, or 4÷20 mA
position transmitter

2. Digital Input Module / Analog Input
Module included in the Logic Solver

3. Application Software function
(to compare the actual trend with the
one stored during SAT )
Case B
Use of a Partial stroke testing device:

1. Limit switches box, or 4÷20 mA
position transmitter

2. Partial stroke testing device with
integrated Software function

As above

Case A
Use of a Logic Solver:

1. Pressure transmitter connected to
the cylinder chamber

2. Analog Input Module included in
the Logic Solver

3. Application Software function
(to compare the actual trend with the
one stored during SAT )
Case B
Use of a Partial stroke testing device:

1. Pressure transmitter connected to
the cylinder chamber

2. Partial stroke testing device with inte­grate Software function

1. Limit switches box, and/or
visual indication

2. Skilled and trained
personnel

1. Limit switches box, and/or
visual indication

2. Chronometer

3. Skilled and trained
personnel

Skilled and trained
personnel (to check audible
partial sticking)

Table 5. Failure mode detectable by the test

Component

Housing Breakage
End cap Breakage

Piston

Rack

Pinion

Spring

Stroke adjustment

Periodic Test and Maintenance Requirements

Detectable failure modes

Automatic Procedure Manual Procedure

Breakage
Sticking

Breakage
Binding

Breakage

As per automatic procedure

Binding
Breakage

Weakened
Breakage

Bended

14

Section 8: Periodic Test and Maintenance Requirements

March 2019

NOTE:

• The ones listed above are the major failure modes of the main components

• In case of manual procedure, the detectable failure modes are the same as per

automatic procedure. The test coverage is lower than the one for automatic mode,
due to the human factor.

• The manual procedure cannot be considered as diagnostic. The test can be

considered as “non-perfect Proof Test”, and can be considered in the estimation of
PFD

, while it is not considered for the estimation of the SFF (safe failure fraction).

AVG

8.4 Proof Test and Periodic Maintenance

We advise to perform the following checks upon each proof test interval complying with
the rules and regulations of the country of nal installation:

• Visually check the entire valve operating system.

• Ensure there are no leaks on the pressurized parts.

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• Check pneumatic connections for leaks. Tighten tube ttings as required.

• Check if manual override (where foreseen) is regular.

• Check if pneumatic lter cartridge (where foreseen) is sound and lter bowl (where

foreseen) has been cleaned properly.

• Check the setting of the relief valves (where foreseen).

• Verify that the power uid supply pressure value is within the required range.

• Remove built-up dust and dirt from all actuator surfaces.

• Inspect actuator paint work for damages to ensure continued corrosion

protection. Touch-up as required in accordance with the applicable paint
specication.

• Operate the Actuator/Valve assembly for 2 open/close complete cycles with

complete closing of the valve.

• Verify the correct performing of open – close operations (for example, check

locally, or automatically via Logic solver, the correct movement of the actuator).

The Installation, Operation and Maintenance manual denes a minimum maintenance
interval after 500.000 cycles for the Bettis RPE-series actuators. This addresses
components that may have age related degradation. When the maintenance interval has
elapsed a complete overhaul of the actuator is required.

15

Periodic Test and Maintenance Requirements

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Section 9: Architectural Contraints

Section 9: Architectural Constraints

For the evaluation of the conformity to the requirement of Hardware safety integrity
architectural constraints of the standard IEC 61508, both Route 1H and Route 2H are used.

Route 1H

• The product has a single channel conguration, HFT (hardware fault tolerance)=0

• Safe failure rate λS:

– Single Acting Actuators: According to IEC 65108 denitions (in particular

denitions 3.6.8 and 3.6.13 of IEC 61508-4), no Safe Failures are possible
in a Single Acting actuator. Each failure mode of the actuator itself shall be
classied as “Dangerous” or “No Eect” (failures which can generate the
spurious operation of the safety function are only external to the actuator
itself, or are related to components that “plays no part in implementing
the safety function”, e.g. components of the pneumatic cylinder.
Therefore, according to denition 3.6.13 of IEC 61508- 4, they cannot be
used for the calculation of the SFF.
Hence λS=0 for each type of single acting actuator.

– Double Acting Actuators: According to IEC 65108 denitions (in particular

denitions 3.6.8 and 3.6.13 of IEC 61508-4), no Safe Failures are possible
in a Double Acting actuator. Each failure mode of the actuator itself shall
be classied as “Dangerous” or “No Eect” (failures which can generate
the spurious operation of the safety function are only external to the
actuator itself, and in the case of loss of power supply the actuator “stays
put”). Therefore, according to denition 3.6.13 of IEC 61508- 4, they
cannot be used for the calculation of the SFF.
Hence λS=0 for each type of Double Acting actuator.

March 2019

For this reason, according to denition 3.6.15 of IEC 61508-4, we have:

• SFF=0 without external diagnostic tests;

• SFF>0 with external diagnostic tests, carried out according to denition 3.8.7 of IEC

61508-4, and according to what written in Section 6 above
(see the same paragraph for the SFF / DC reachable).

Route 2

• The application of Route 2H (“eld feedback”) is assessed.

• As the product is classied as “Type A”, no requirements for SFF are

In conclusion:

The product can be used in single channel conguration up to:

• SIL 2 without external diagnostic tests

• SIL 3 considering external diagnostic tests

H

given for Route 2H.

Architectural Constraints

16

Section 10: Common Cause Factors

March 2019

Section 10: Common Cause Factors

The product has a single channel conguration, HFT=0.

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The β factors can be used when performing PFD
architectures.

The Common Cause factors, relevant when the product is used in redundant conguration,
are: β=βD=0,05

NOTE:

• The above value is the value for 1oo2 architecture. The values for other architectures

shall be calculated according to IEC 61508 Part 6, Table D.5.

• The above value is calculated in the hypothesis of redundancy without diversity.

calculations for redundant

AVG

17

Common Cause Factors

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Section 11: Mean Repair Time

The Mean Repair Time of the device is 1 hour.

NOTICE

The Mean Repair Time is estimated considering availability of skilled personnel for
maintenance, spare parts and adequate tools and materials on site (that is, it encompasses
the eective time to repair and the time before the component is put back into operation).

Procedures to repair or replace the Bettis RPE-Series actuators are provided in the
respective Installation, Operation and Maintenance manual. Please refer to the Installation,
Operation and Maintenance manual for any tools required for repair and replacement and
required competency of technicians. Maintenance and subsequent test procedures are
also covered in the Installation, Operation and Maintenance manual. Any failures, identied
by the end-user during maintenance, repair or proof testing, that potentially impact the
functional safety of the Bettis RPE-Series actuators should be reported back to Actuation
Technologies Customer Service Coordinator.

Section 11: Mean Repair Time

March 2019

Mean Repair Time

18

Section 12: Systematic Capability

March 2019

Section 12: Systematic Capability

The systematic capability of the device is 3.

This systematic capability is guaranteed only if the user:

1. Use the device according to the instructions for use and to the present Manual.

2. Use the device in the appropriate environment (limitation of use).

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19

Systematic Capability

World Area Configuration Centers (WACC) offer sales support, service,
inventory and commissioning to our global customers.
Choose the WACC or sales office nearest you:

NORTH & SOUTH AMERICA

19200 Northwest Freeway
Houston TX 77065
USA
T [phone]

Av. Hollingsworth
325 Iporanga Sorocaba
SP 18087-105
Brazil

MIDDLE EAST & AFRICA

P. O. Box 17033
Jebel Ali Free Zone
Dubai
T [phone]

P. O. Box 10305
Jubail 31961
Saudi Arabia
T [phone]

T [phone]

24 Angus Crescent

ASIA PACIFIC

Longmeadow Business Estate East

P.O. Box 6908 Greenstone
No. 9 Gul Road
#01-02 Singapore 629361
T [phone]

No. 1 Lai Yuan Road

1616 Modderfontein Extension 5

South Africa

T [phone]

EUROPE

Wuqing Development Area
Tianjin 301700
P. R. China
T [phone]

Holland Fasor 6

Székesfehérvár 8000

Hungary

T [phone]

Strada Biffi 165

29017 Fiorenzuola d’Arda (PC)

Italy

T [phone]

For complete list of sales and manufacturing sites, please visit

www.emerson.com/actuationtechnologieslocations or contact us at
[e-mail]

www.emerson.com/bettis

©2019 Emerson. All rights reserved.

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TM

is a mark of one of the Emerson family of companies.

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All other marks are property of their respective owners.

The contents of this publication are presented for information purposes
only, and while every effort has been made to ensure their accuracy,
they are not to be construed as warranties or guarantees, express or
implied, regarding the products or services described herein or their use
or applicability. All sales are governed by our terms and conditions, which
are available on request. We reserve the right to modify or improve the
designs or specifications of our products at any time without notice.