Rosemount 928 Operating Manual
00809-0100-4928, Rev AE
Rosemount™ 928 Wireless Gas Monitor
Reference Manual
September 2019
Safety information
Read this manual before working with this product. For personal and system safety and for optimum product performance, make
sure to thoroughly understand the contents before installing, using, or maintaining this product.
The United States has two toll-free assistance numbers and one international number.
Customer Central: 1 800 999 9307 (7:00 a.m. to 7:00 p.m. Central Time)
National Reponse Center: 1 800 654 7768 (24 hours a day) for equipment service needs
International: 1 952 906 8888
NOTICE
Read this document 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.
United States - 1-800-999-9307 (7:00 am to 7:00 pm Central Time)
Asia Pacific- 65 777 8211
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.
WARNING
Explosions
Explosions could result in death or serious injury.
Installation of device in an explosive environment must be in accordance with appropriate local, national, and international
standards, codes, and practices.
Review Product certifications for any restrictions associated with a safe installation.
Before connecting a handheld communication device in an explosive atmosphere, ensure the instruments are installed in
accordance with Intrinsically Safe or non-incendive field wiring practices.
When connecting an external device to the Rosemount 928's discrete output in a hazardous area, ensure that the external
device is installed in accordance with Intrinsically Safe or non-incendive field wiring practices.
WARNING
Electrical shock
Electrical shock could cause death or serious injury.
Avoid contact with the leads and terminals. High voltage that may be present on leads can cause electrical shock.
CAUTION
Nuclear applications
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 an Emerson sales representative.
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CAUTION
Installation problems
Only install the Rosemount 928 and all other wireless devices after the Wireless Gateway has been installed and is functioning
properly. Power up wireless devices in order of proximity from the Wireless Gateway, beginning with the closest. This will result in
a simpler and faster network installation.
CAUTION
Shipping considerations for wireless products
Battery hazards remain when cells are discharged.
The unit was shipped to you without the power module installed. Remove the power module prior to shipping.
Each power module contains two "C" size primary lithium batteries. Primary lithium batteries are regulated in transportation
by the US Department of Transportation and are also covered by IATA (International Air Transport Association), ICAO
(International Civil Aviation Organization), and ARD (European Ground Transportation of Dangerous Goods). It is the shipper's
responsibility to ensure compliance with these or any other local requirements. Consult current regulations and requirements
before shipping.
The power module with the wireless unit contains two "C" size primary lithium/thionyl chloride batteries. Each battery
contains approximately 2.5 grams of lithium, for a total of 5 grams in each pack. Under normal conditions, the battery
materials are self-contained and are not reactive as long as the batteries and the pack integrity are maintained. Take care to
prevent thermal, electrical, or mechanical damage. Protect contacts to prevent premature discharge.
Power modules should be stored in a clean and dry area. For maximum battery life, storage temperature should not exceed 86
°F (30 °C).
The power module has surface resisitivity greater than one gigaohm and must be properly installed in the wireless device
enclosure. Take care during transportation to and from the point of installation to prevent electrostatic charge buildup.
WARNING
Physical access
Unauthorized personnel may potentially cause significant damage to and/or misconfiguration of end users’ equipment. This could
be intentional or unintentional and needs to be protected against.
Physical security is an important part of any security program and fundamental to protecting your system. Restrict physical access
by unauthorized personnel to protect end users’ assets. This is true for all systems used within the facility.
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Contents
Chapter 1 Introduction.................................................................................................................. 9
1.1 Using this manual.............................................................................................................................9
1.2 Models covered................................................................................................................................ 9
1.3 Device overview............................................................................................................................. 10
1.4 Product recycling/disposal............................................................................................................. 10
Chapter 2 Configuration...............................................................................................................11
2.1 Overview........................................................................................................................................ 11
2.2 Safety messages.............................................................................................................................11
2.3 Install the sensor............................................................................................................................ 12
2.4 Install the power module................................................................................................................14
2.5 Bench configuration....................................................................................................................... 15
2.6 HART® menu trees..........................................................................................................................17
2.7 Guided setup..................................................................................................................................20
2.8 Calibrating the sensor.....................................................................................................................47
2.9 Manual setup..................................................................................................................................70
2.10 Advanced options.........................................................................................................................86
2.11 Remove power module.............................................................................................................. 105
Chapter 3 Install.........................................................................................................................107
3.1 Overview...................................................................................................................................... 107
3.2 Safety messages...........................................................................................................................107
3.3 Wireless considerations................................................................................................................108
3.4 Electrical.......................................................................................................................................111
3.5 Verify operating atmosphere........................................................................................................111
3.6 Install the transmitter...................................................................................................................112
3.7 Rotate LCD display........................................................................................................................114
3.8 Ground the transmitter................................................................................................................ 115
3.9 External alarm device electrical connections.................................................................................115
Chapter 4 Commissioning.......................................................................................................... 119
4.1 Safety messages...........................................................................................................................119
4.2 Verify wireless network communication.......................................................................................120
4.3 Using Field Communicator to change the network ID and join key................................................124
4.4 Using AMS Wireless Configurator to change the network ID and join key......................................124
4.5 Verify operation........................................................................................................................... 124
4.6 If there is an immediate alarm...................................................................................................... 126
4.7 Troubleshoot communication...................................................................................................... 126
Chapter 5 Operation and maintenance.......................................................................................127
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5.1 Safety messages...........................................................................................................................127
5.2 LCD display screens...................................................................................................................... 128
5.3 Software features......................................................................................................................... 133
5.4 Resetting latched alarms.............................................................................................................. 135
5.5 Clearing process alarm history......................................................................................................141
5.6 Calibration history........................................................................................................................ 146
5.7 Sensor log.................................................................................................................................... 152
5.8 Bump testing................................................................................................................................159
5.9 Calibration....................................................................................................................................161
5.10 Sensor storage........................................................................................................................... 161
5.11 Replace the gas sensor............................................................................................................... 161
5.12 Replace the power module.........................................................................................................162
5.13 Replace the Ingress Protection filter........................................................................................... 165
5.14 Service support.......................................................................................................................... 166
Chapter 6 Troubleshooting........................................................................................................ 169
6.1 Overview...................................................................................................................................... 169
6.2 Rosemount™ 928 troubleshooting................................................................................................169
6.3 Digital concentration output is not reacting to presence of target gas..........................................176
6.4 LCD display troubleshooting.........................................................................................................176
6.5 Wireless network troubleshooting................................................................................................177
Appendix A Specifications and reference data............................................................................... 179
A.1 Specifications...............................................................................................................................179
A.2 Dimensional drawings..................................................................................................................182
A.3 Ordering information................................................................................................................... 183
Appendix B Product certifications................................................................................................. 187
B.1 European Directive information....................................................................................................187
B.2 Telecommunication compliance.................................................................................................. 187
B.3 FCC and IC.................................................................................................................................... 187
B.4 Ordinary location certification ..................................................................................................... 187
B.5 Installing in North America........................................................................................................... 187
B.6 USA.............................................................................................................................................. 187
B.7 Canada.........................................................................................................................................188
B.8 Europe..........................................................................................................................................189
B.9 International.................................................................................................................................190
B.10 China..........................................................................................................................................190
B.11 Japan.......................................................................................................................................... 190
B.12 Brazil.......................................................................................................................................... 191
B.13 Intrinsically Safe installation drawing..........................................................................................192
Appendix C High gain remote antenna option...............................................................................193
C.1 Safety messages...........................................................................................................................193
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C.2 Antenna functional specifications.................................................................................................193
C.3 Installation considerations........................................................................................................... 194
C.4 Transient and lightning considerations.........................................................................................195
C.5 Dimensional drawing................................................................................................................... 196
C.6 Install the high gain remote antenna............................................................................................ 197
Appendix D Alert message mapping..............................................................................................201
D.1 Variable mapping.........................................................................................................................201
D.2 Alert mapping..............................................................................................................................201
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Introduction
1 Introduction
1.1 Using this manual
The sections in this manual provide information on installing, operating, and maintaining
the Rosemount™ 928 Wireless Gas Monitor. Models 928XSS00 and 928XUT00 are the
standard wireless gas monitors. Models 928XXSS01 and 928XUT01 include discrete
outputs, which can be used to trigger optional external device alarms, such as beacons or
annunciators, when an alarm condition occurs.
The manual sections are organized as follows.
Configuration contains information on the configuration and calibration of the
transmitter. You can configure with the AMS Wireless Configurator or Field
Communicator. This section also includes Field Communicator menu trees.
Install contains information on the installation of the transmitter, installation of the sensor
on the transmitter, and the wiring of external devices to the transmitter discrete output.
Commissioning contains information for the commissioning of the transmitter onto the
wireless network and how to verify that the transmitter has successfully joined.
Operation and maintenance provides detailed information on operation of the
transmitter. The chapter shows LCD display messages and includes maintenance
information, such as power module replacement, bump testing, and periodic calibration.
Troubleshooting provides descriptions and recommended corrective actions for common
errors and problems.
Specifications and reference data contains functional, physical, and performance
specifications, as well as ordering information.
Product certifications contains telecommunication compliance information, ordinary
location certification, hazardous locations certificates, and intrinsic safety installation
drawings.
High gain remote antenna option contains specifications, description, and installation
information for the optional high gain remote antenna.
Alert message mapping contains information about alerts in the HART® command, 48
additional status field and device variables, and variable mapping indexes for the
transmitter. This information can be used by DeltaV™ for alert monitoring and in the
Wireless Gateway for additional status mapping in Modbus®, OPC, or other
communications protocols.
1.2 Models covered
This manual covers the following modules
• Rosemount 928XSS00 Wireless Gas Monitor
— Ships with a separately specified Rosemount 628 Universal Gas Sensor.
• Rosemount 928UTX00 Wireless Gas Monitor
— Ships without a Rosemount 628 Universal Gas Sensor.
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• Rosemount 928XSS01 Wireless Gas Monitor
— Wireless gas monitor with discrete output to be used as a switch for triggering
external equipment on an alarm state.
— Ships with a separately specified Rosemount 628 Universal Gas Sensor.
• Rosemount 928UTX021
— Wireless gas monitor with discrete output to be used as a switch for triggering
external equipment on an alarm state.
— Ships without a Rosemount 628 Universal Gas Sensor.
1.3 Device overview
The Rosemount 928 Wireless Gas Monitor uses the Rosemount 628 Universal Gas Sensor
to monitor the presence of toxic gases. The Rosemount 628 Universal Gas Sensor consists
of an electrochemical sensor inside a hot-swappable sensor module installed into the
transmitter housing. The transmitter sends the gas concentrations measured by the
sensor to the host system using the WirelessHART® protocol.
Electrochemical toxic sensors, such as those contained in the Rosemount 628 Series Gas
Sensor Module, consist of a set of electrodes separated by electrolyte material. When the
target gas is present inside the sensor housing, it oxidizes or reduces on the sensing
electrode. This creates an electric signal across the cell, which the transmitter interprets
and converts into a wireless-enabled signal.
1.4 Product recycling/disposal
Consider recycling equipment and packaging. Dispose of the product and packaging in
accordance with local and national legislations and regulations.
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2 Configuration
2.1 Overview
This section contains information on configuring the transmitter, including the sensor,
using Field Communicator or AMS Wireless Configurator. It also includes sensor calibration
information.
2.2 Safety messages
Instructions and procedures in this section may require special precautions to ensure the
safety of the personnel performing them.
WARNING
Follow installation guidelines.
Failure to follow these installation guidelines could result in death or serious injury.
Ensure that only qualified persons perform the installation.
WARNING
Explosions
Explosions could result in death or serious injury.
Before connecting a handheld communication device in an explosive atmosphere,
make sure that the instruments are installed in accordance with Intrinsically Safe or
non-incendive field wiring practices.
Verify that the operating atmosphere of the transmitter is consistent with the
appropriate hazardous locations certifications.
WARNING
Electrical shock
Electrical shock could cause death or serious injury.
Use extreme caution when making contact with the leads and terminals.
The power module may be replaced in a hazardous area. The power module has a
surface resistivity greater than one gigaohm and must be properly installed in the
wireless device enclosure. Take care during transportation to and from the point of
installation to prevent electrostatic charge buildup.
The surface resistivity of the antenna is greater than one gigaohm. To avoid
electrostatic charge buildup, do not rub or clean the antenna with solvents or a dry
cloth.
Substitution of components may impair intrinsic safety.
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2.3 Install the sensor
The Rosemount™ 928 Wireless Gas Monitor is compatible with the Rosemount 628
Universal Gas Sensors. These sensors are contained within a sensor module that fits
integrally into the transmitter housing without using tools. Make electrical connections
when the sensor module is fully seated in the transmitter sensor module housing.
CAUTION
Install the Ingress Protection (IP) filter.
If the IP filter is not installed, damage may occur to the sensor inside the sensor.
Do not operate the transmitter without the correct IP filter installed in the sensor.
When installing the IP filter, verify that the IP filter gasket is in place and properly
aligned and that it does not block the white filter media. Refer to Figure 2-1.
When handling the IP filter, avoid contact with the filter media.
Verify that all three legs are fully latched by pushing upward on each leg of the IP filter.
Avoid getting water inside the IP filter.
Do not attempt to clean the IP filter.
Do not rinse or spray the IP filter with water.
Do not immerse the IP filter in water.
Figure 2-1: IP Filter
A. IP filter housing
B. IP filter gasket
C. Filter media
Note
Use Rosemount 628 Universal Gas Sensors only with the Rosemount 928 Transmitter.
The sensor is held in place using a tight-fitting seal and snap connections. The sensor is
connected to the transmitter by two latching tabs that fit into the bottom portion of the
housing as shown in Figure 2-2.
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Figure 2-2: IP Filter Latching Tabs Locations
A. Transmitter housing
B. Gas sensor module
C. Latching tabs
The seal between the transmitter housing and the sensor assembly is designed so that a
snug, airtight fit is achieved between the two assemblies when properly installed.
Procedure
1. Remove the sensor from its packaging.
2. If installing a sensor on the transmitter for the first time, remove the protective
plastic cap from the sensor module housing.
3. The sensor contains a keying feature that ensures that the module cannot be forced
into the transmitter housing incorrectly. Confirm that the keying feature is aligned
by rotating it into position before installing the sensor into the transmitter.
4. Slide the sensor assembly up into the main transmitter housing until it is completely
seated.
5. To ensure a firm latch and seal, push the sensor upward until the two latching tabs
are fully engaged. Push up on the bottoms of the tabs after they are seated.
6. Allow the transmitter to warm up before continuing.
Refer to Table 2-1 for maximum warm up times based on gas type. During the
warm up period, the displayed values, alerts, and gas concentrations do not reflect
actual measurements; readings are not transmitted.
Table 2-1: Maximum Warm up Periods
Gas type Maximum warm up period
Hydrogen sulfide (H2S) One minute
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Table 2-1: Maximum Warm up Periods (continued)
Gas type Maximum warm up period
Oxygen (O2) Seven minutes
Carbon monoxide (CO) One minute
Postrequisites
To remove the sensor, compress the two latching tabs and pull downward until the
module is released from the transmitter housing.
2.4 Install the power module
The transmitter is powered by the Emerson 701 SmartPower™ Module - Black. To connect
the module to the transmitter, do the following:
Procedure
1. Remove the rear housing cover.
A. Rear housing cover
2. Connect the Emerson 701 SmartPower Module - Black.
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3. Verify the connection by viewing the LCD display.
4. Replace the rear housing cover and completely tighten.
5. Allow the transmitter to warm up before continuing.
Refer to Table 2-2 for maximum warm up times based on gas type. During the
warm up period, the displayed values, alerts, and gas concentrations do not reflect
actual measurements; readings are not transmitted.
Table 2-2: Maximum Warm up Periods
Gas type Maximum warm up period
Hydrogen sulfide (H2S) One minute
Oxygen (O2) Seven minutes
Carbon monoxide (CO) One minute
2.5 Bench configuration
To configure, you must install the sensor in a functional transmitter. The transmitter
receives any HART® communication from a handheld Field Communicator or from an AMS
Wireless Configurator.
Remove the rear housing cover to expose the terminal block and HART communication
terminals; then connect the power module to power the device for configuration.
2.5.1
Bench configure using a Field Communicator
A transmitter Device Description (DD) is required for HART® communication.
To connect to the transmitter using a handheld communication device, refer to Guided
setup. To obtain the latest DD, go to EmersonProcess.com/DeviceFiles and then visit the
Emerson web page for your handheld device.
Procedure
1. On the Home screen, select Configure.
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2. Do one of the following:
• On the Configure screen, select Guided Setup to verify or change initial
configuration settings. Refer to Guided setup. Refer to the Field Communicator
subsections for each configuration task.
• On the Configure screen, select Manual Setup to verify or change all
configuration settings, including optional advanced settings. Refer to Manual
setup. Refer to the Field Communicator subsections for each configuration task.
3. When finished, select Send to implement configuration changes.
4. When configuration is completed, remove the HART communications leads from
the COMM terminals on the terminal block and replace the rear housing cover.
2.5.2 Bench configure AMS Wireless Configurator
AMS Wireless Configurator is capable of connecting to devices directly, using a HART
modem, or though a Wireless Gateway.
Procedure
®
1. In the AMS Device Manager pane, select the HART modem.
2. In the device pane, double-click the device icon.
3. Select Configure.
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4. In the Configure pane, do one of the following:
• Select Guided Setup to verify or change initial configuration settings. Refer to
Guided setup. Refer to the AMS Wireless Configurator subsections for each
configuration task.
• Select Manual Setup to verify or change all configuration settings, including
optional advanced settings. Refer to Manual setup. Refer to the AMS Wireless
Configurator subsections for each configuration task.
5. When finished, select Send to implement configuration changes.
2.6 HART® menu trees
The following figures show the navigation paths for Field Communicator commands and
options. A Rosemount 928 Wireless Gas Monitor DD is required for HART Wireless
transmitter communication. To obtain the latest Emerson DD, visit the System Software
and Device Description web page for your handheld communicator device. Refer to the
reference manual for your handheld communicator device.
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Figure 2-3: Field Communicator Overview Menu Tree
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Figure 2-4: Field Communicator Configure Menu Tree
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Figure 2-5: Field Communicator Service Tools Menu Tree
2.7 Guided setup
Guided setup contains basic configurations settings. The Guided Setup menus are useful
during initial configuration.
Note
Emerson developed the Field Communicator Guided Setup configuration procedures
using Emerson AMS Trex™ Device Communicator. The menus are identical to those found
in other Field Communicators, but are navigated using touch screens rather than fast keys.
Refer to the manual for your handheld communicator device for more information.
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Procedure
1.
WARNING
Explosions
Do not connect to the COMM terminals when an explosive atmopshere is present.
Connect the HART® communication leads to the HART terminals on the handheld
communicator.
2.
WARNING
Explosions
Do not connect to the COMM terminals when an explosive atmopshere is present.
Connect the HART communication leads to the COMM terminals on the transmitter
terminal block.
3. Start your handheld communicator device. If necessary, open the HART Field
Communicator application on your handheld device to establish HART
communication.
Refer to the manual for your handheld communicator device for more information.
4. On the Overview screen, select Configure.
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5. On the Configure screen, select Guided Setup.
6. Perform each of the configuration tasks in the following subsections.
2.7.1
Basic setup
Basic setup using Field Communicator
Procedure
1. On the Guided Setup screen, select Basic Setup.
2. On the Device Information screen, select any of the following and configure as
needed. Otherwise, continue with Step 3.
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• Long tag: Enter an identifier for the device up to 32 characters long using the
virtual keypad. The Long tag field is blank by default and does not display if left
blank.
• Tag: Enter an identifier for the device up to eight uppercase alphabetic and
numeric characters long using the virtual keypad. The Tag field is blank by
default and does not display if left blank.
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• Descriptor: Enter a description of the device up to 16 alphabetic, numeric, and
special characters long. The Descriptor field is blank by default and does not
display if left blank.
• Message: Enter a message up to 32 alphabetic, numeric, and special characters
long. The Message field is blank by default, does not display if left blank, and
may be used for any purpose.
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3. On the Device Information screen, select Next.
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4. On the Basic Setup screen, select OK to confirm successful completion of basic
setup.
Basic setup using AMS Wireless Configurator
Procedure
1. On the Guided Setup tab, in the Initial Setup field, select Basic Setup.
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2. On the Device Information tab, configure any of the following as needed.
Otherwise, continue with Step 3.
• Long tag: Enter an identifier for the device up to 32 characters long using the
virtual keypad. The Long tag field is left blank by default and does not display if
left blank.
• Tag: Enter an identifier for the device up to eight uppercase alphabetic and
numeric characters long using the virtual keypad. The Tag field is blank by
default and does not display if left blank.
• Descriptor: Enter a descriptor of the device up to 16 alphabetic, numeric, and
special characters long. The Descriptor field is blank by default and does not
display if left blank.
• Message: Enter a message up to 32 alphabetic, numeric, and special characters
long. The Message field is left blank by default, does not display if left blank, and
may be used for any purpose.
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3. On the Basic Setup screen, select Next.
2.7.2
4. Select Finish.
Joining the transmitter to a wireless network
To communicate with the Wireless Gateway and the host system, you must use the
wireless network to configure the transmitter.
This procedure is the wireless equivalent of connecting wires from a transmitter to the
host system. Using Field Communicator or AMS Wireless Configurator, enter the network
ID and join key so that they match the network ID and join key of the Wireless Gateway
and other devices in the network. If the network ID and join key are not identical, the
transmitter will not communicate with the network. You can obtain the network ID and
join key from the Wireless Gateway on the Setup → Network → Settings page on the web
server.
Note
The amount of time required to join the new device or devices to the network is
dependent on the number of devices being joined and the number of devices in the
current network. One new device joining an existing network with multiple devices may
take up to five minutes. Multiple new devices joining an existing network may take up to
60 minutes.
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Join a wireless network using Field Communicator
Procedure
1. On the Guided Setup screen, select Join to Network.
2. On the Join to Network screen, use the numeric keypad to enter the WirelessHART
network ID.
The network ID must match the Wireless Gateway network ID. Refer to the System
Settings → Network → Network Settings page in the Wireless Gateway web-based
user interface for the network ID.
3. Select OK.
®
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4. On the Join Key screen, use the hexadecimal keypad to enter the first part of the
join key.
Refer to the System Settings → Network → Network Settings page in the Wireless
Gateway web-based user interface for the join key.
5. Select OK.
6. Repeat Step 4 and Step 5 for parts 2 - 4 of the join key.
Join a wireless network using AMS Wireless Configurator
Procedure
1. On the Guided Setup tab, in the Wireless field, select Join Device to Network.
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