Rosemount 928 Quick Start Guide
Quick Start Guide
00825-0100-4928, Rev AD
October 2019
Rosemount™ 928 Wireless Gas Monitor
Integrated Wireless Gas Monitoring
Quick Start Guide October 2019
Safety information
Read this Quick Start Guide before working with 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
This guide provides configuration and basic installation information for the Rosemount™ 928. It does
not provide diagnostic, maintenance, service, troubleshooting, Intrinsically Safe (I.S.) installation, or
ordering information. Refer to the Rosemount 928 Wireless Gas Monitor Reference Manual for more
information.
The manual and this guide are also available electronically on Emerson.com/Rosemount.
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.
Ensure that only qualified personnel perform the installation.
Installation of device in an explosive environment must be in accordance with appropriate local,
national, and international standards, codes, and practices.
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.
Verify that the operating atmosphere of the transmitter is consistent with the appropriate
hazardous locations certifications.
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.
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WARNING
Electrical shock
Electrical shock could cause death or serious injury.
Use extreme caution when making contact with the leads and terminals.
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.
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.
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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.
Contents
Overview......................................................................................................................................5
Install the sensor.......................................................................................................................... 7
Install the power module............................................................................................................10
Bench configuration...................................................................................................................12
Guided setup..............................................................................................................................14
Calibrating the sensor................................................................................................................ 23
Manual setup............................................................................................................................. 35
Wireless considerations..............................................................................................................41
Electrical.................................................................................................................................... 45
Verify operating atmosphere..................................................................................................... 46
Install the transmitter.................................................................................................................47
Verify wireless network communication.....................................................................................51
Verify operation......................................................................................................................... 54
External alarm device electrical connections.............................................................................. 57
Product certifications................................................................................................................. 61
Declaration of Conformity..........................................................................................................66
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1 Overview
The Rosemount™ 928 Wireless Gas Monitor is used with the Rosemount 628
Series of sensor modules.
The sensor fits integrally into the transmitter without the use of tools. Make
electrical connections when the sensor module is fully seated in the
transmitter sensor housing.
Note
Use Rosemount 928 only with the Rosemount 928 Transmitter.
CAUTION
The Ingress Protection (IP) filter must be installed.
If the IP filter is not installed, damage may occur to the sensor inside the
Rosemount 628.
Do not operate the transmitter without the correct IP filter installed in
the sensor module.
When installing the IP filter, verify that the IP filter gasket is in place, is
properly aligned, and that it does not block the white filter media. Refer
to Figure 1-1.
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.
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Figure 1-1: IP Filter
A. IP filter housing
B. IP filter gasket
C. Filter media
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2 Install the sensor
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 the figure below. 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 housing at the bottom of the
transmitter.
3. The sensor contains a keying feature that ensures that it cannot be
forced into the transmitter housing in an incorrect alignment.
Confirm that the keying feature is aligned by rotating it into position
before installing the module into the transmitter.
4. Slide the sensor assembly up into the transmitter housing until it is
completely seated.
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Figure 2-1: Inserting the Sensor into the Transmitter
A. Rosemount 928 Transmitter housing
B. Rosemount 628 Universal Gas Sensor
C. Latching tabs
5. To ensure a firm latch and seal, push the module upward until the
two latching tabs are fully engaged. Push up on the bottoms of the
latching tabs after they are seated.
6. Allow the trannsmitter to warm up before continuing.
Refer to the following table for maximum warm up times based on
gas type. During the warm up period, the displayed values, alerts,
and gas concentrations will not reflect actual measurements;
readings will not be transmitted.
Gas type
Hydrogen sulfide (H2S) One minute
Oxygen (O2) Seven minutes
Carbon monoxide (CO) One minute
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Maximum warm up period
October 2019 Quick Start Guide
Postrequisites
To remove the sensor, compress the latching tabs and pull downward until it
is released from the transmitter housing.
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3 Install the power module
To perform configuration, the sensor must be installed in a functional
transmitter. The transmitter is powered by the Emerson 701 SmartPower
Module - Black.
Procedure
1. Remove the rear housing cover.
A. Rear housing cover
2. Connect the Emerson 701 SmartPower Module - Black.
™
3. Verify the connection by viewing the LCD display.
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4. Replace the rear housing cover and completely tighten.
5. Allow the transmitter to warm up before continuing.
Refer to Table 3-1 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 3-1: Maximum Warm up Periods
Gas type Maximum warm up period
Hydrogen sulfide (H2S) One minute
Oxygen (O2) Seven minutes
Carbon monoxide (CO) One minute
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4 Bench configuration
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.
4.1 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.
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.
4.2
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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 Explorer pane, select the HART Modem 1.
2. In the device pane, double-click the device icon.
3. Select Configure.
4. In the Configure pane, do one of the following:
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• 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.
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5 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.
Procedure
1. Remove the rear housing.
2.
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.
3. Connect the HART communication leads to the COMM terminals on
the transmitter terminal block (A and B).
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A. +Comm terminal
B. -Comm terminal
4. 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.
5. On the Overview screen, select Configure.
6. On the Configure screen, select Guided Setup.
7. Perform each of the configuration tasks in the following subsections.
5.1
Basic setup
5.1.1 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.
• 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.
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• 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 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.
3. On the Device Information screen, select Next.
4. On the Basic Setup screen, select OK to confirm successful
completion of basic setup.
5.1.2 Basic setup using AMS Wireless Configurator
Procedure
1. On the Guided Setup tab, in the Initial Setup field, select Basic Setup.
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.
3. On the Basic Setup screen, select Next.
4. Select Finish.
5.2
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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
October 2019 Quick Start Guide
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.
5.2.1 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.
4. On the Join Key screen, use the hexadecimal keypad to enter the first
part of the join key.
The join key must match the Wireless Gateway 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 to configure the remaining keys to join the
Wireless Gateway.
5.2.2 Join a wireless network using AMS Wireless Configurator
Procedure
1. On the Guided Setup tab, in the Wireless field, select Join Device to
Network.
2. On the Join Device to Network tab, enter the network ID and join
key.
3. Select Next.
4. Follow the steps in the wizard to complete the network
configuration.
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5.3 Update rate considerations
Before configuring the wireless update rate for your wireless devices,
evaluate the safety concerns, conditions, and wireless network in your
facility to select the current update rate to meet your needs.
When specifying the update rate, consider the potential for toxic gas
release, the severity of potential gas concentration that may be released,
and whether the device is located in a populated area. The default update
rate is eight seconds and is appropriate for most applications. You may use a
more frequent update rate if desired. A less frequent update rate extends
transmitter power module life and optimizes Wireless Gateway device
capacity.
Consider the speed with which you want to be alerted to a dangerous
condition of toxic gas. Emerson does not recommend reporting by
exception for the Rosemount 928 Wireless Gas Monitors or Emerson
Wireless Gateways due to its potential adverse effect on Wireless Gateway
capacity and network integrity. Therefore, select an update rate for all
wireless gas monitors that corresponds to the safety needs of your facility
but does not exceed the capacity of the Wireless Gateway or your wireless
network.
Note
The configured wireless update rate does not affect the LCD display and the
optional alarm output (if installed) update rates.
5.3.1 Configure the update rate using Field Communicator
Procedure
1. On the Guided Setup screen, select Configure Update Rate.
2. On the Configure Update Rate screen, do one of the following:
• a. For an update rate from 1 to 60 seconds, select an update
rate from the list.
b. Select OK.
• a. For update rates greater than 60 seconds, select 61-3600
seconds from the list.
b. Enter the update rate in number of seconds. For example,
enter 1800 seconds for 30 minutes.
c. Select OK.
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3. On the Emerson Wireless Gateway Optimizations screen, select Yes
- Enable Optimizations to save and use wireless optimizations or
select No - Disable Optimizations to reject wireless optimizations.
Note
Wireless gateway optimizations combine process measurement and
device diagnostic messages from field devices to the wireless
gateway, saving network bandwidth. If you don't use optimizations,
you will need more message packets to receive the same amount of
information. Emerson recommends enabling wireless gateway
optimizations unless they are incompatible with the wireless
gateway.
4. Select OK.
5. On the Configure Update Rate screen, select OK to confirm
successful update rate configuration.
5.3.2 Configure the update rate using AMS Wireless Configurator
Procedure
1. On the Guided Setup tab, in the Wireless field, select Configure
Update Rate to configure the frequency at which the device reports
measurement and diagnostic information.
2. On the Configure Update Rate screen, do one of the following:
• a. Select an update rate from 1 to 60 seconds from the list.
b. Select Next.
• a. Select 61-3600 from the list.
b. Type the number of seconds for an update rate from 61
seconds to 60 minutes. For example, enter 1800 seconds
for 30 minutes.
c. Select Next.
3. On the Wireless Gateway Optimization screen, select Yes - Enable
Optimizations to save and use wireless optimizations or select No Disable Optimizations to reject wireless optimizations.
Note
Wireless gateway optimizations combine process measurement and
device diagnostic messages from field devices to the wireless
gateway, saving network bandwidth. If you don't use optimizations,
you will need more message packets to receive the same amount of
information. Emerson recommends enabling wireless gateway
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optimizations unless they are incompatible with the wireless
gateway.
4. Select Next.
5. Select Next and then select Finish to save the update rate
configuration.
5.4 Configuring the device display mode
The device display mode defines whether or how frequently the LCD display
is turned on to display selected dynamic variables screens. Disabling the
display mode or selecting a less frequent display mode extends power
module life.
5.4.1 Configure the device display mode using Field Communicator
Procedure
1. On the Guided Setup screen, select Configure Device Display.
2. On the Device Display Options screen, select one of the following
display mode options.
• Disabled: The display is turned off. This is useful if the display will
never be viewed locally.
• On Demand: The display is on when the gas monitor is connected
to a handheld communication device or when it receives a signal
from its wireless gateway.
• Periodic: The display is on only during updates at the configured
update rate.
• High Availability: The display is always on regardless of the
configured update rate. This is the default display mode option.
3. Select OK to save the selected device display options.
Note
When a handheld communication device is connected to the transmitter,
the LCD display is in High Availability mode. Selecting and accepting the On
Demand or Periodic options does not take effect until approximately five
minutes after the handheld communicator device is disconnected. Selecting
and displaying Disabled takes effect immediately.
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5.4.2 Configure the device display mode using AMS Wireless Configurator
Procedure
1. On the Guided Setup tab, in the Optional Setup field, select
Configure Device Display.
2. Select one of the following display mode options:
• Disabled: The display is turned off. This is useful if the display will
never be viewed locally.
• On Demand: The display is on when the gas monitor is connected
to a handheld communication device or when it receives a signal
from its wireless gateway.
• Periodic: The display is on only during updates at the configured
update rate.
• High Availability: The display is always on regardless of the
configured update rate. This is the default display mode option.
3. Follow the steps in the wizard to configure the device display mode.
5.5 Configuring process alerts
Process alerts allow you to configure the device to send a HART® message
when the configured data point is exceeded. Alerts remain active if the set
points are exceeded and the alert mode is ON. Process alerts are displayed
on a handheld communication device, on the AMS Device Manager status
screen, on the Wireless Gateway web interface, on host systems with which
the Wireless Gateway communicates, and in the error section of the LCD
display (if so configured).
The gas concentration may be latched. If you select Latch Concentration
Alarms, the alarm output is latched until the alert is manually cleared. You
can manually reset a latched gas concentration alarm by removing and
reinstalling the power module. Refer to the Removing the power module
section in the Rosemount 928 Wireless Gas Monitor Reference Manual and
Install the power module. Latched alarms do not remain latched following a
device reset or power model failure.
You can reset a latched gas concentration alarm by using Field
Communicator or AMS Wireless Configurator. Refer to the Clearing latched
alarms section in the Reference Manual for information about clearing
latched alarms. If you select Not Latched, the gas concentration alarm clears
automatically when the gas concentration level dissipates below the
specified High Concentration Threshold.
Clearing alert history clears process alert history for other alerts, but does
not clear latched gas concentration alerts. Refer to the Clearing process alarm
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