Emerson Rosemount 3051S Series User manual

www.rosemount.com
Reference Manual
00809-0100-4804, Rev AA
January 2011
Rosemount 3051S
Electronic Remote Sensors

Reference Manual
00809-0100-4804, Rev AA
January 2011 Rosemount 3051S ERS System
www.rosemount.com
Rosemount 3051S
Electronic Remote Sensors
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.
For technical assistance, contacts are listed below:
Customer Central
Technical support, quoting, and order-related questions.
Americas 1 800 999 9307
Europe [phone]
Middle east [phone]
Asia [phone]
North American Response Center
Equipment service needs.
1-800-654-7768 (24 hours—includes Canada)
Outside of these areas, contact your local Rosemount®representative.
The products described in this document are NOT designed for nuclear-qualified
applications. Using non-nuclear qualified products in applications that require
nuclear-qualified hardware or products may cause inaccurate readings.
For information on Rosemount nuclear-qualified products, contact your local Rosemount
Sales Representative.

Reference Manual
00809-0100-4804, Rev AA
January 2011
TOC-1
Rosemount 3051S ERS System
SECTION 1
Introduction Using This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Models Covered . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Service Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Product Recycling/Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
SECTION 2
Installation Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Rosemount Manifolds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
SECTION 3
Configuration Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Basic Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Additional Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
SECTION 4
Operation and
Maintenance
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Functional Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Field Upgrades and Replacements . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
SECTION 5
Troubleshooting Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Device Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Measurement Quality Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
APPENDIX A
Specifications and
Reference Data
Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-11
Ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-17
Spare Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-37
APPENDIX B
HART Menu Tree
APPENDIX C
Product
Certifications
Approved Manufacturing Locations . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Ordinary Location Certification for FM . . . . . . . . . . . . . . . . . . . . . . . . C-1
Table of Contents

Reference Manual
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January 2011
Rosemount 3051S ERS System
TOC-2

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January 2011
1-1
Rosemount 3051S ERS System
Section 1 Introduction
Using This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 1-1
Models Covered . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 1-1
Service Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 1-2
Product Recycling/Disposal . . . . . . . . . . . . . . . . . . . . . . .page 1-2
USING THIS MANUAL The sections in this manual provide information on installing, operating, and
maintaining a Rosemount 3051S ERS™System with HART®protocol. The
sections are organized as follows:
• Section 2: Installation contains mechanical and electrical installation
instructions, and field upgrade options.
• Section 3: Configuration provides instruction on commissioning and
operating a 3051S ERS System. Information on software functions,
configuration parameters, and online variables is also included.
• Section 4: Operation and Maintenance contains operation and
maintenance techniques.
• Section 5: Troubleshooting provides troubleshooting techniques for the
most common operating problems.
• Appendix A: Specifications and Reference Data supplies reference and
specification data as well as ordering information.
• Product Certifications contains approval information, European ATEX
directive information, and approval drawings.
MODELS COVERED The 3051S ERS System is a flexible, 2-wire HART architecture that calculates
differential pressure (DP) electronically, using two pressure sensors. The
pressure sensors are linked together with an electrical cable and
synchronized to create a single 3051S ERS system. The sensors used in the
3051S ERS System can consist of any combination of 3051SAM and
3051SAL models. One of the sensors is required to be a “Primary” and the
other is required to be a “Secondary.”
The Primary sensor contains the 4-20 mA loop termination and optional LCD.
The Secondary sensor is made up of a pressure sensor module and junction
box housing that is connected to the Primary sensor, using a standard
instrument cable.
Rosemount 3051SAM ERS Sensor
• Coplanar and In-Line sensor module platforms
• Variety of process connections including NPT, flanges, manifolds, and
1199 remote diaphragm seals
Rosemount 3051SAL ERS Sensor – Liquid Level Configuration
• Integrated transmitter and remote diaphragm seal in a single model
number
• Variety of process connections including flanged, threaded, and
hygienic remote diaphragm seals

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Rosemount 3051S ERS System
1-2
Rosemount 300ERS Housing Kit
• Upgrade and convert an existing 3051S transmitter into a 3051S ERS
sensor.
• Easily order replacement housings and electronics for an existing ERS
system.
Figure 1-1. ERS Models and
Possible Configurations
SERVICE SUPPORT To expedite the return process outside of the United States, contact the
nearest Rosemount representative.
Within the United States, call the Emerson Process Management Instrument
and Valves Response Center using the 1-800-654-RSMT (7768) toll-free
number. This center, available 24 hours a day, will assist you with any needed
information or materials.
The center will ask for product model and serial numbers, and will provide a
Return Material Authorization (RMA) number. The center will also ask for the
process material to which the product was last exposed.
Emerson Process Management Instrument and Valves Response Center
representatives will explain the additional information and procedures
necessary to return goods exposed to hazardous substances.
PRODUCT
RECYCLING/DISPOSAL Recycling of equipment and packaging should be taken into consideration
and disposed of in accordance with local and national legislation/regulations.
3051SAM Inline
(Secondary)
3051SAL Coplanar with FF Seal
(Primary)
3051SAM Inline
(Primary)
3051SAL Coplanar with FF Seal
(Secondary)
3051SAM Inline
(Secondary)
3051SAL Coplanar with FF Seal
and Remote Display (Primary)
Individuals who handle products exposed to a hazardous substance can avoid injury if they
are informed of and understand the hazard. If the product being returned was exposed to a
hazardous substance as defined by OSHA, a copy of the required Material Safety Data Sheet
(MSDS) for each hazardous substance identified must be included with the returned goods.

Reference Manual
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January 2011 Rosemount 3051S ERS System
www.emersonprocess.com/rosemount
Section 2 Installation
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 2-1
Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 2-2
Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . .page 2-6
Rosemount Manifolds . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 2-21
OVERVIEW This section covers installation considerations for the Rosemount 3051S ERS
system. A Quick Installation Guide (document number 00825-0100-4804) is
shipped with every 3051S ERS sensor to describe basic installation, wiring,
configuration, and startup procedures. Dimensional drawings for each
Rosemount 3051S ERS sensor are included in Appendix A: Specifications
and Reference Data.
SAFETY MESSAGES Procedures and instructions in this section may require special precautions to
ensure the safety of personnel performing the operation. Information that
raises potential safety issues is indicated with a warning symbol ( ). Refer
to the following safety messages before performing an operation preceded by
this symbol.

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CONSIDERATIONS
General Measurement performance depends upon proper installation of each sensor
and impulse piping. Mount each 3051S ERS sensor close to the process and
use minimum piping to achieve best performance. Also, consider the need for
easy access, personnel safety, practical field calibration, and a suitable
environment. Install each sensor to minimize vibration, shock, and
temperature fluctuation.
NOTE:
Install the enclosed pipe plugs (found in the box) in any unused conduit
openings. For proper straight and tapered thread engagement requirements,
see the appropriate approval drawings in Appendix C: Product Certifications.
For material compatibility considerations, see technical note
00816-0100-3045 on www.emersonprocess.com/rosemount.
Failure to follow these installation guidelines could result in death or serious injury:
• Make sure only qualified personnel perform the installation.
Explosions could result in death or serious injury:
• Do not remove the housing covers in explosive atmospheres when the circuit is live.
• Before connecting a Field Communicator in an explosive atmosphere, make sure the
instruments in the loop are installed in accordance with intrinsically safe or non-incendive
field wiring practices.
• Both housing covers must be fully engaged to meet flameproof / explosion-proof
requirements.
• Verify that the operating atmosphere of the transmitter is consistent with the appropriate
hazardous location certifications.
Electrical shock could cause death or serious injury. If the ERS system is installed in a high-voltage
environment and a fault or installation error occurs, high voltage may be present on the sensor leads
and terminals:
• Use extreme caution when making contact with the leads and terminals.
Process leaks could result in death or serious injury:
• Install and tighten all four flange bolts before applying pressure.
• Do not attempt to loosen or remove flange bolts while the ERS system is in service.
• Replacement equipment or spare parts not approved by Emerson Process Management
for use as spare parts could reduce the pressure retaining capabilities of the transmitter
and may render the instrument dangerous.
• Use only bolts supplied or sold by Emerson Process Management as spare parts.
Improper assembly of manifolds to traditional flange can damage the device:
• For the safe assembly of the manifold to the sensor flange, bolts must break the back
plane of the flange web (i.e. bolt hole) but must not contact the sensor module.
Static electricity can damage sensitive components:
• Observe safe handling precautions for static-sensitive components.

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Rosemount 3051S ERS System
Mechanical For dimensional drawing information, refer to Appendix A: Specifications and
Reference Data on page A-11.
For steam service or for applications with process temperatures greater than
the limits of each ERS sensor, do not blow down impulse piping through either
sensor. Flush lines with the blocking valves and refill lines with water before
resuming measurement.
If a 3051S ERS sensor is mounted on its side, position the flange / manifold to
ensure proper venting or draining.
Field Terminal Side of Housing
Mount each ERS sensor so the terminal side is accessible. Clearance of
0.75-in. (19 mm) is required for cover removal.
Electronics Side of Housing
Provide 0.75-in. (19 mm) of clearance for units without an LCD display. Three
inches of clearance is required for cover removal if an LCD display is
installed.
Cover Installation
Always ensure a proper seal by installing the housing covers so that metal
contacts metal in order to prevent performance degradation due to
environmental effects. For replacement cover o-rings, use Rosemount o-rings
(part number 03151-9040-0001).
Conduit Entry Threads
For NEMA 4X, IP66, and IP68 requirements, use thread seal (PTFE) tape or
paste on male threads to provide a watertight seal.
Cover Jam Screw
For housings shipped with a cover jam screw (as shown in Figure 2-1), the
screw should be properly installed once the ERS system has been wired and
powered up. The cover jam screw is intended to prevent the removal of the
housing covers in flameproof environments without the use of tools. Follow
these steps to install the cover jam screw:
1. Verify that the cover jam screw is completely threaded into the
housing.
2. Install the housing covers and verify that metal contacts metal in order
to meet flameproof / explosion-proof requirements.
3. Using an M4 hex wrench, turn the jam screw counterclockwise until it
contacts the housing cover.
4. Turn the jam screw an additional ½ turn counterclockwise to secure
the cover. Application of excessive torque may strip the threads.
5. Verify that the covers cannot be removed.

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Rosemount 3051S ERS System
2-4
Figure 2-1. Cover Jam Screw
Environmental Access requirements and cover installation can help optimize transmitter
performance. Mount each transmitter to minimize ambient temperature
changes, vibration, mechanical shock, and to avoid external contact with
corrosive materials. Refer to Appendix A: Specifications and Reference Data
for temperature operating limits.
NOTE:
The ERS system contains additional electrical protection that is inherent to
the design. As a result, ERS cannot be used in applications with floating
electrical grounds greater than 50 Vdc (such as Cathodic Protection). Consult
an Emerson Process Management sales representative for additional
information or considerations on use in similar applications.
PlantWeb®Housing Junction Box Housing
2X Cover Jam Screw
(1 per side)
Cover Jam
Screw

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Rosemount 3051S ERS System
Figure 2-2. 3051S ERS
Installation Flowchart
START HERE
Device Tagging
No
Bench
Commissioning
?
Yes
Field Installation
Run “Basic
Setup” Wizard
Units of Measure
& Damping
Variable Mapping
4 & 20 mA Range
Points
Alarm &
Saturation Levels
Verify
Review ERS
System
Configuration
Verify PHI and
PLO Designations
Apply Pressure
No
Bench
Commissioning
?Yes
Refer to Section 4:
Operation and
Maintenance
Identify PHI and
PLO ERS Sensors
Mount Each ERS
Sensor
Consider
Housing Rotation
Set Switches
Connect Wiring
and Apply Power
Trim ERS System
for Mounting
Effects
Finish

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Rosemount 3051S ERS System
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INSTALLATION
PROCEDURES
Identify ERS Sensors A complete ERS system contains two pressure sensors. One is mounted on
the high-pressure (PHI) process connection, and the other is mounted on the
low-pressure (PLO) process connection. An optional remote display and
interface may also be included if ordered.
1. Look at the wire-on tag on the ERS sensor to identify whether it is
configured as the PHI or PLO sensor (see Figure 2-3)
2. Locate the second sensor that will be used in the ERS System:
• For new installations or applications, the second ERS sensor may
have been shipped in a separate box.
• If servicing or replacing part of an existing ERS system, the other
sensor may already be installed.
NOTE:
ERS sensors are shipped from the factory preconfigured such that the
primary unit (4-20 loop termination and optional LCD) is assigned as the PHI
device, and the secondary unit (junction box housing) is assigned as the PLO
device. The PHI and PLO process connection (such as at the top of a tank),
these designations may be switched electronically using a Field
communicator (page 3-12).
Figure 2-3. ERS PHI and PLO
Wire-On Tags
OR

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Rosemount 3051S ERS System
Mount Each ERS Sensor Mount the PHI and PLO sensors at the correct process connections for the
application. Common ERS installations are shown in Figure 2-4.
Vertical Installation
In a vertical installation such as on a vessel or distillation column, the PHI
sensor should be installed at the bottom process connection. The PLO sensor
should be installed at the top process connection.
Horizontal Installation
In a horizontal installation, the PHI sensor should be installed at the upstream
process connection. The PLO sensor should be installed downstream.
Figure 2-4. Vertical and
Horizontal ERS Installations
PLO Sensor
PHI Sensor
PHI Sensor PLO Sensor
Pressure Drop

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Rosemount 3051S ERS System
2-8
Mounting Brackets
Mounting brackets are available to facilitate mounting the transmitter to a 2-in.
pipe or to a panel. The B4 SST bracket option is for use with Coplanar and
In-Line process connections. “Coplanar Flange Mounting Configurations” on
page A-14 shows dimensions and mounting configuration for the B4 bracket.
Other bracket options are listed in Table 2-1.
When installing a 3051S ERS Sensor to one of the optional mounting
brackets, torque the bolts to 125 in-lb. (0,9 N-m).
Table 2-1. Mounting Brackets
Flange Bolts
An ERS sensor can be shipped with a Coplanar flange or a traditional flange
installed with four 1.75-in. flange bolts. Mounting bolts and bolting
configurations for the Coplanar and traditional flanges can be found on
page 2-9. Stainless steel bolts supplied by Emerson Process Management
are coated with a lubricant to ease installation. Carbon steel bolts do not
require lubrication. No additional lubricant should be applied when installing
either type of bolt. Bolts supplied by Emerson Process Management are
identified by their head markings:
Options Description Mounting Type Bracket Material Bolt Material
B4 Coplanar Flange Bracket 2-in. Pipe/Panel SST SST
B1 Traditional Flange Bracket 2-in. Pipe Painted Carbon Steel Carbon Steel
B2 Traditional Flange Bracket Panel Painted Carbon Steel Carbon Steel
B3 Traditional Flange Flat Bracket 2-in. Pipe Painted Carbon Steel Carbon Steel
B7 Traditional Flange Bracket 2-in. Pipe Painted Carbon Steel SST
B8 Traditional Flange Bracket Panel Painted Carbon Steel SST
B9 Traditional Flange Flat Bracket 2-in. Pipe Painted Carbon Steel SST
BA Traditional Flange Bracket 2-in. Pipe SST SST
BC Traditional Flange Flat Bracket 2-in. Pipe SST SST
Carbon Steel (CS) Head Markings
B7M
316 B8M F593_*
Stainless Steel (SST) Head Markings
* The last digit in the F593_ head marking
may be any letter between A and M.
F593_*
KM
660
CL A
Alloy K-500 Head Marking

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Rosemount 3051S ERS System
Bolt Installation
Only use bolts supplied with the ERS sensor or sold by Emerson Process
Management as spare parts. Use the following bolt installation procedure:
1. Finger-tighten the bolts.
2. Torque the bolts to the initial torque value using a crossing pattern.
For initial torque values, see Table 2-2.
3. Torque the bolts to the final torque value using the same crossing
pattern. For final torque values, see Table 2-2.
Torque values for the flange and manifold adapter bolts are as follows:
Table 2-2. Bolt Installation
Torq ue Valu es
Figure 2-5. Common ERS
Sensor / Flange Assemblies
Bolt Material Option Code Initial Torque Value Final Torque Value
CS-ASTM-A449 Standard 300 in.-lb (34 N-m) 650 in.-lb (73 N-m)
316 SST Option L4 150 in.-lb (17 N-m) 300 in.-lb (34 N-m)
ASTM-A-193-B7M Option L5 300 in.-lb (34 N-m) 650 in.-lb (73 N-m)
Alloy K-500 Option L6 300 in.-lb (34 N-m) 650 in.-lb (73 N-m)
ASTM-A-453-660 Option L7 150 in.-lb (17 N-m) 300 in.-lb (34 N-m)
ASTM-A-193-B8M Option L8 150 in.-lb (17 N-m) 300 in.-lb (34 N-m)
ERS Sensor with Coplanar Flange ERS Sensor with Coplanar Flange and
Flange Adapters ERS Sensor with Traditional Flange and Flange Adapters
1.75 in. (44 mm) x 4
1.75 in.
(44 mm) x 2 2.88 in.
(73 mm) x 2
1.75 in.
(44 mm) x 4 1.5 in.
(38 mm) x 2

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Process Connections The process connection size on a 3051S ERS Sensor flange is 1/4-18 NPT.
Flange adapters with a 1/4-18 NPT to 1/2-14 NPT connection are available with
the D2 option. Use a plant-approved lubricant or sealant when making the
process connections.
Install and tighten all four flange bolts before applying pressure to avoid
leakage. When properly installed, the flange bolts will protrude through the top
of the sensor module Isolator Plate. See Figure 2-6. Do not attempt to loosen
or remove the flange bolts while the transmitter is in service.
Figure 2-6. Sensor Module
Isolator Plate
To install adapters to a Coplanar flange, perform the following procedure:
1. Remove the flange bolts.
2. Leaving the flange in place, move the adapters into position with the
o-rings installed.
3. Attach the adapters and the Coplanar flange to the transmitter sensor
module assembly using the longer of the bolts supplied.
4. Tighten the bolts. Refer to Table 2-2 on page 2-9 for torque
specifications.
Refer to “Spare Parts” on page A-37 for the correct part number of the flange
adapter and o-rings designed for a Coplanar 3051S ERS sensor.
When removing flanges or adapters, visually inspect the PTFE o-rings.
Replace them if there are any signs of damage such as nicks or cuts. If
replacing o-rings, re-torque the flange bolts after installation to compensate
for seating of the PTFE o-ring.
Bolt
Sensor Module
Isolator Plate
Coplanar Flange
Flange Adapters
Use only the o-rings included with the flange adapter for the 3051S ERS sensor. Failure
to install proper fitting flange adapter o-rings may cause process leaks, which can result
in death or serious injury.

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Rosemount 3051S ERS System
Impulse Piping
The piping between the process and each ERS sensor must accurately
transfer the pressure to obtain accurate measurements. There are many
possible sources of error: pressure transfer, leaks, friction loss (particularly if
purging is used), trapped gas in a liquid line, liquid in a gas line, and plugged
impulse lines.
The best location for each ERS sensor depends on the process itself. Use the
following guidelines to determine sensor location and placement of impulse
piping:
• Keep impulse piping as short as possible.
• For liquid service, slope the impulse piping at least 1 inch per foot (8
cm per m) upward from the transmitter toward the process connection.
• For gas service, slope the impulse piping at least 1 inch per foot (8 cm
per m) downward from the transmitter toward the process connection.
• Avoid high points in liquid lines and low points in gas lines.
• When purging, make the purge connection close to the process tap and
purge through equal lengths of the same size pipe. Avoid purging
through either 3051S ERS sensor.
• Keep corrosive or hot (above 250 °F or 121 °C) process material out of
direct contact with the sensor module process connection and flanges.
• Prevent sediments from depositing in the impulse piping.
NOTE:
Take necessary steps to prevent process fluid from freezing with the process
flange to avoid damage to the 3051S ERS sensor.
NOTE:
Verify the zero point on each ERS sensor after installation. To reset the zero
point, refer to “Calibration Overview” on page 4-3.
Consider Housing
Orientation Housing Rotation
The housing can be rotated to improve access to wiring or to better view the
LCD display (if ordered). To rotate the housing, perform the following
procedure:
1. Loosen the housing set screw.
2. Turn the housing up to 180 degrees to the left or right of its original
(as shipped) position.
NOTE:
Do not rotate the housing more than 180 degrees from its original position
without first performing a disassembly procedure (see page 4-8). Over
rotation may sever the electrical connection between the sensor module and
the electronics featureboard.
3. Retighten the housing rotation set screw.

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Figure 2-7. Housing Rotation
LCD display Rotation
In addition to rotating the housing, the optional LCD display on the primary
ERS sensor can be rotated in 90° increments by squeezing the two tabs,
pulling out the display, rotating, and snapping the display back into place.
NOTE:
If the LCD pins are inadvertently removed from the electronics featureboard,
re-insert the pins before snapping the LCD display back into place.
Configure Security and
Alarm Security Switch
Changes to the ERS system configuration can be prevented with the security
(write protect) switch, which is located on the electronics featureboard of the
ERS primary sensor. See Figure 2-8 for the location of the switch. Position the
switch in the “ON” position to prevent accidental or deliberate change to the
ERS system configuration.
If the write protect switch is in the “ON” position, the ERS System will not
accept any “writes” to its memory. Configuration changes, such as digital trim
and reranging, cannot take place when the security switch is set to “ON.”
Alarm Direction
The alarm direction of the analog output of the ERS system is set by
repositioning the alarm switch, which is located on the electronics
featureboard of the primary transmitter. Position the switch in the “HI” position
to have the ERS system go to high alarm in a fail condition, or position the
switch in the “LO” position to have the system go to low alarm in a fail
condition. See “Alarm and Saturation Levels” on page 3-5 for more
information on alarm and saturation levels.
PlantWeb Housing Junction Box Housing
Housing Rotation Set Screw
(3/32 inch)