Quick Start Guide
00825-0100-4928, Rev AE
December 2019
Rosemount™ 928 Wireless Gas Monitor
Integrated Wireless Gas Monitoring
Quick Start Guide December 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.
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.
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.
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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.
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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December 2019 Quick Start Guide
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
December 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:
December 2019 Quick Start Guide
• 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.
WARNING
Explosions
Do not connect to the COMM terminals when an explosive atmosphere is
present.
Procedure
1. Remove the rear housing.
2. 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.
Postrequisites
Refer to Basic setup throughConfiguring process alerts.
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
December 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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history section in the Reference Manual. You may query alert history for
other process alerts to determine whether they have been active.
5.5.1 Configure process alerts using Field Communicator
Procedure
1. On the Guided Setup screen, select Configure Process Alerts.
2. On the Process Alerts screen, select a process alert to configure.
3. On the selected process alert screen, select Mode.
4. On the Mode screen, select Enabled.
5. Select OK.
6. On the Alert Limit screen, use the numeric keypad to enter an alert
limit for the selected process alert based on your needs and local
regulations.
7. Select OK.
8. On the selected process alert screen, select Next.
9. On the Configure Process Alerts screen, select OK to confirm
successful process alert configurations.
10. Repeat Step 2 through Step 9 as necessary to configure additional
process alerts.
5.5.2 Configure process alerts using AMS Wireless Configurator
Procedure
1. On the Guided Setup tab, in the Optional Setup field, select Configure
Process Alerts.
The Process Alerts window is displayed.
2. In the Mode list, in the HI-HI Alarm field, select Enabled to enable the
alarm.
3. In the Alert Limit field, enter an alert limit for the selected process
alert based on your needs and local regulations.
4. Repeat Step 2 and Step 3 if necessary to configure the Hi Alarm
process alert.
5. Select Next.
6. Select Next to confirm successful process alert configuration.
7. Select Finish.
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6 Calibrating the sensor
Calibrating the sensor ensures that the analog, digital, and discrete outputs
accurately transmit the target gas concentrations registered by the module.
Although Emerson calibrated the device at the factory, you must calibrate it
at the following times to ensure accuracy and correct operation:
• During installation.
• At least every 180 days throughout the device's service life.
• When replacing the sensor.
The Rosemount 628 Universal Gas Sensor is a smart sensor. As such, it
retains its own calibration information. It must be connected to a
transmitter to calibrate, but the calibration settings are stored in the sensor
itself rather than in the transmitter. You may uninstall the sensor from a
transmitter and reinstall it in another transmitter without affecting its
calibration.
CAUTION
If you are calibrating in a windy environment (over five mph), use a
calibration cup to ensure calibration accuracy.
Note
You do not need a conventional calibration cup to calibrate the sensor.
Connect calibration tubing (PVC tubing, 3/16-in. ID, 5/16-in. OD) directly to
the fitting on the IP filter assembly (part number 00628-9000-0001).
6.1
Calibrate using Field Communicator
Note
Emerson developed the Field Communicator guided setup configuration
procedures in this manual using Emerson AMS Trex Device Communicator.
The menus are identical to those found in other Field Communicators, but
you navigate using touch screens rather than fast keys. Refer to the manual
for your handheld communication device for more information.
WARNING
Explosions
Do not connect to the COMM terminals when an explosive atmosphere is
present.
Quick Start Guide 23
A
B
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Procedure
1. Connect the HART® communication leads from the Field
Communicator HART terminals to the COMM terminals on the
terminal block of the transmitter.
A. +COMM terminal
B. -COMM terminal
2. Establish communication between the transmitter and the Field
Communicator.
3. On the Home screen, select Configure.
4. On the Configure screen, select Guided Setup.
5. On the Guided Setup screen, select Calibrate Sensor.
6. Select OK to accept the current date as the calibration date and
continue.
7. Acknowledge the warning. If necessary, remove the loop from
automatic control.
Note
Calibration of an O2 sensor is unlikely to use a true zero value for its
lower limit; one must calibrate the sensor to a known lower percent
oxygen value (such as 15 percent oxygen level by volume) in order to
"zero" the sensor as outlined in the remainder of the calibration steps
below.
8. When calibrating for H2S and CO, expose the sensor to clean air to
zero the reading. When calibrating for O2, expose the sensor to a
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December 2019 Quick Start Guide
known percent of oxygen content calibration gas (recommended 15
percent oxygen by volume) to be used as the "zero" calibration value.
If the ambient air may contain trace amounts of target gas or other
gases (for example, carbon monoxide from engine exhaust) that may
interfere with zeroing the device, do the following:
a) Obtain a cylinder of verified clean air (H2S and CO) or a
cylinder of verified percent oxygen content calibration gas
(O2) and a length of calibration tubing (PVC tubing, 3/16-in.
ID, 5/16-in. OD).
b) Install a regulator on the clean air/percent known oxygen
content gas cylinder.
c) Attach a length of calibration tubing (PVC tubing, 3/16-in. ID,
5/16-in. OD) from the regulator on the cylinder to the fitting
on the IP filter assembly (part number 00628-9000-0001).
d) Release the clean air/known percent oxygen specified
calibration gas to the sensor.
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Note
If you need a long length of calibration tubing to reach the
device, make allowances for a delay in response time from
the sensor while the clean air travels the length of the
calibration tubing.
e) Complete Step 13 through Step 14
f) Turn off the clean air (or percent oxygen specified calibration
gas) when the sensor is correctly zeroed.
9. Select OK when the zero measurement reading stabilizes.
Note
Negative measurement readings may occur and are normal during
zeroing.
10. Wait while the Field Communicator performs zero adjustment.
11. Select OK to accept the new zero measurement.
12. Select OK to accept the new zero.
13. On the Calibrate Sensor screen, enter a gas concentration level that
corresponds to the concentration of calibration gas that will be
applied during calibration.
For oxygen, use 20.9 percent oxygen from clean air. This step may be
performed with surrounding air if no contaminants are present.
14. Select OK.
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December 2019 Quick Start Guide
15. Install a regulator on the target gas source.
WARNING
Toxic gas
Before performing the next step, verify that the regulator is closed to
avoid releasing target gas into the air during calibration.
16. Attach a length of calibration tubing (PVC tubing, 3/16-in. ID, 5/16in. OD) from the regulator on the target gas source to the fitting on
the IP filter assembly (part number 00628-9000-0001).
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17. Release the target gas from the target gas source.
Emerson recommends a flow rate of 1.0 liters per minute to ensure a
consistent sensor reading.
Note
If you need a long length of tubing to reach the device, make
allowances for a delay in response time from the sensor while the
target gas travels the length of the calibration tubing.
A gas concentration should begin to register on the LCD display and
gradually increase to the calibration gas concentration level. The gas
concentration level shown on the device display may not exactly
match that shown on the label of the target gas source.
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18. Wait while the gas concentration measurement stabilizes.
Refer to Figure 6-1.
Figure 6-1: Typical Calibration Profile
A. Gas concentration ppm
B. Time (in seconds)
C. Gas concentration measurement has stabilized
19. Select OK when the gas concentration measurement stabilizes at or
near the target gas concentration level.
20. Wait while the Field Communicator calibrates.
When the calibration process finishes, the Field Communicator
displays the new adjusted reading.
21. Select OK.
Note
If you can't calibrate the sensor, verify that the correct sensor is
installed, the correct target gas is being applied, and the IP filter is
not clogged or obstructed. A sensor that cannot accept a new
calibration may have reached the end of its service life. Replace the
sensor and repeat this procedure. Refer to the Replace the gas sensor
section in the Rosemount 928 Wireless Gas Monitor Reference
Manual.
22. Select Accept calibration and then select OK.
The Field Communicator displays the Service Reminder screen if a
service reminder is configured and enabled.
23. Select OK to accept the service reminder date or enter another date.
Quick Start Guide 29
Quick Start Guide December 2019
Refer to the Service Reminders section of the Rosemount 928 Wireless
Gas Monitor Reference Manual for more information.
24. Shut off the target gas flow at the regulator.
25. Detach the calibration tubing from the regulator on the target gas
source and from the IP filter inlet on the bottom of the sensor.
6.2 Calibrate using AMS Wireless Configurator
Procedure
1. On the Guided Setup tab, in the Initial Setup field, select Calibrate
Sensor.
2. On the Calibrate Sensor screen, select Next to accept the current date
as the calibration date and continue.
3. On the Warning screen, select Next.
4. When calibrating for H2S, and CO, expose the sensor to clean air to
zero the reading. When calibrating for O2, expose the sensor to a
known percent oxygen content calibration gas (recommended 15
percent oxygen by volume) to be used as the "zero" calibration value.
If the ambient air may contain trace amounts of target gas or other
gases (for example, carbon monoxide from engine exhaust) that may
interfere with zeroing the device, do the following:
a) Obtain a cylinder of verified clean air (H2S and CO) or a
cylinder of verified percent oxygen content calibration gas
(O2) and a length of calibration tubing (PVC tubing, 3/16-in.
ID, 5/16-in. OD).
30 Emerson.com/Rosemount
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b) Install a regulator on the clean air/known percent oxygen
content gas cylinder.
c) Attach a length of calibration tubing (PVC tubing, 3/16-in.
OD, 5/16-in. OD) from the regulator on the cylinder to the IP
filter on the bottom of the sensor.
d) Release the clean air/known percent oxygen specified
calibration gas to the sensor.
Note
If you need a long length of calibration tubing to reach the
device, make allowances for a delay in response time from
the sensor while the clean air travels the length of the
calibration tubing.
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Quick Start Guide December 2019
e) Perform Step 5 through Step 7.
f) Turn off the clean air/known percent oxygen specified
calibration gas when the sensor is correctly zeroed.
5. Select Next when the zero measurement reading stabilizes.
6. Select Next.
7. Select Accept New Zero.
8. Select Next.
9. On the Calibrate Sensor screen, enter a gas concentration level that
corresponds to the concentration of the calibration gas that will be
applied during calibration.
The value must be between 5 ppm and 100 ppm.
10. Select Next.
WARNING
Toxic gas
The regulator may release gas into the air during calibration.
Before starting the next step, verify that the regulator is closed.
11. Install a regulator on the target gas source.
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12. Attach a length of calibration tubing (PVC tubing, 3/16-in. ID, 5/16in. OD) from the regulator on the target gas source to the IP filter
inlet on the bottom of the sensor.
13. Release the target gas from the target gas source.
Emerson recommends a flow rate of 1.0 liters per minute to ensure a
consistent sensor reading.
Note
If you need a long length of calibration tubing to reach the device,
make allowances for a delay in response time from the sensor while
the target gas travels the length of the calibration tubing.
A gas concentration should begin to register on the device display
and gradually increase to the calibration gas concentration level. The
gas concentration level shown on the device display may not exactly
match that shown on the label attached to the target gas source.
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Quick Start Guide December 2019
14. Wait while the gas concentration measurement stabilizes.
Refer to Figure 6-2.
Figure 6-2: Typical Calibration Profile
A. Gas concentration ppm
B. Time (in seconds)
C. Gas concentration measurement has stabilized
15. Select Next when the gas concentration measurement stabilizes at
or near the target gas concentration level.
16. Wait while the AMS Wireless Configurator calibrates.
When the calibration process finishes, the new adjusted reading is
displayed.
17. Select Next.
18. Select Accept calibration.
19. Select Next.
The Service Reminder screen is displayed if a service reminder is
configured and enabled.
20. Select Next to accept the service reminder date or enter another
date.
Refer to the Service reminders section of the Rosemount 928 Wireless
Gas Monitor Reference Manual for more information.
21. Shut off the target gas flow at the regulator.
22. Detach the calibration tubing from the regulator on the target gas
source and from the IP filter inlet on the bottom of the sensor.
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7 Manual setup
Manual setup includes all available configuration settings. You may use it to
change specific settings configured during initial setup without using the
Guided Setup menus. You may also use it to configure advanced optional
settings.
Note
Emerson developed the Field Communicator manual setup configuration
procedures in this manual 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. Connect the HART® communications leads to the HART terminals on
the handheld communicator.
A. +COMM terminal
B. -COMM terminal
WARNING
Explosions
Do not connect to the COMM terminals when an explosive
atmosphere is present.
Quick Start Guide 35
Quick Start Guide December 2019
2. Connect the HART communication leads to the COMM terminals on
the terminal block.
3. Start your handheld communicator device. If necessary, open the
HART Field Communicator 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.
5. On the Configure screen, select Manual Setup.
Postrequisites
Complete Configuring display options, Configuring security settings, and
Configuring device information as needed.
7.1 Configuring display options
The primary variable (gas concentration) is displayed by default on the LCD
display.
To configure the display of additional dynamic variable items, do the
following:
7.1.1 Configure display options using Field Communicator
Procedure
1. On the Manual Setup screen, select Display.
2. On the Display screen, select Display Options.
3. Select a display option or options to alternate displaying with the
primary variable (gas concentration):
• Concentration
• Percent of Range
• Sensor Temp (gas sensor module temperature)
• Electronics Temp (electronics temperature)
• Supply Voltage
4. Select On.
5. Select OK.
6. Repeat Step 3 through Step 5 for additional display options.
7. On the Display Options screen, select Send.
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8. On the Send screen, do one or more of the following:
• Select Display Options if you want to review the selected
display options.
• Select Cancel to return to the Display Options screen. Pending
changes to display options are preserved.
• Select Discard to return to the Display Options screen and discard
pending changes. Select OK to confirm or Cancel to return to the
previous screen.
• Select Send to send display option changes to the device.
9. Select Back to return to the Manual Setup screen.
7.1.2 Configure display options using AMS Wireless Configurator
Procedure
1. On the Manual Setup page, select the Display tab.
2. On the Display tab, select a display option or options to alternate
displaying with the primary variable (gas concentrations).
• Concentration
• Percent of Range
• Sensor Temperature (gas sensor module temperature)
• Electronics Temperature
• Supply Voltage
3. Select Send.
4. In the Confirm Device Configuration Change dialog box, select a reason
for the change from the Service Reason list. Select Details if you want
to view additional information.
5. Select Yes.
7.2
Configuring security settings
You have the option to configure security settings to protect the device
from unauthorized configuration changes.
7.2.1 Configure security settings using a Field Communicator
Procedure
1. On the Manual Setup screen, select Security.
2. Configure the following security settings as required.
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• Write Protect: If you select No (the default option), you may view
and edit device configuration settings. If you select Yes, you may
view device configuration settings but not edit them.
• Lock Device: If you select Unlock, you may access the device with
any host to view and edit configuration settings. If you select
Lock (the default option), you cannot access the device with any
host to view and edit configuration settings until a host unlocks
the device. To change this option, do the following:
a. On the Security screen, select Lock/Unlock.
b. On the Select HART Lock option screen, select Lock or
Unlock to change the setting.
c. Select OK.
On the Security screen, the Device is Locked field displays On
when the device is locked and Off when the device is unlocked.
• Over the Air Upgrade: If you select Unlock (the default option),
you can upgrade the transmitter radio with programming sent
over the air. If you select Lock, the transmitter prevents over-theair radio upgrades.
7.2.2 Configure security settings using AMS Wireless Configurator
Procedure
1. On the Manual Setup page, select the Security tab.
2. Configure the following security settings as needed:
• Write Protection: If you select No (the default option) you can
view and edit device configuration settings. If you select Yes, you
will not be able to view and edit the configuration settings.
• Radio Upgrade: If you select Unlock (the default option), you can
upgrade the transmitter radio with programming sent over the
air. If you select Lock, you will not be able to upgrade the radio
over the air.
• Lock Device: If you select Unlock (the default option), you can
access the device with any host to view and edit configuration
settings. If you select Lock, you will not be able to access the
device with any host to view and edit configuration settings until
a host unlocks the device. To change this option, do the
following:
a. Select Lock/Unlock.
b. In the HART Lock list, select Lock or Unlock to change the
setting.
38 Emerson.com/Rosemount
December 2019 Quick Start Guide
c. Select Finish.
In the HART Lock field, the Device is Locked check box is selected
when the device is locked.
3. When you are finished making changes, select Send to update the
device configuration.
7.3 Configuring device information
7.3.1 Configure device information using Field Communicator
Procedure
1. On the Manual Setup screen, select Device Information.
2. On the Device Information screen, select any of the following and
configure as needed.
• 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 left 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.
• Date: Enter a date in mm/dd/yyy format using the virtual keypad.
The date may be used for any purpose, such as recording the date
of the most recent calibration.
3. When you have finished making changes, select Send.
4. On the Send screen, do one of the following:
• Select Cancel to return to the Device Information screen. Pending
changes are preserved.
• Select Discard to return to the Device Information screen and
discard pending changes. Select OK to confirm or Cancel to
return to the previous screen.
• Select Send to send display option changes to the device.
5. Select Back to return to the Manual Setup screen.
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7.3.2 Configure device information using AMS Wireless Configurator
Procedure
1. On the Manual Setup page, select the Device Information tab.
2. Enter any of the following as needed:
• Long tag: Enter an identifier for the device up to 32 characters
long. 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. The Tag field is blank by
default and does not display if left blank.
• Descriptor: Enter a description of the device up to 16 characters
long. The Descriptor field is blank by default and does not display
if left blank.
• Message: Enter text up to 32 characters long. The Message field is
blank by default, does not display if left blank, and may be used
for any purpose.
• Date: Enter a date in mm/dd/yyyy format. The date may be used
for any purpose, such as recording the date of the most recent
calibration.
3. When you have finished making changes, select Send to update the
device configuration.
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8 Wireless considerations
8.1 Power up sequence
Only install the transmitter and all other wireless devices after you have
installed the wireless gateway and the gateway is functioning properly.
Install the Emerson 701 SmartPower™ Module - Black into the transmitter to
power the device. Power up wireless devices in order of proximity from the
gateway, beginning with the closest. This results in a simpler and faster
network installation. Enable active advertising on the gateway to ensure that
new devices join the network faster. Refer to the reference manual for your
wireless gateway for more information.
8.2 Antenna position
Position the antenna vertically straight up and, if the application
requirements allow, approximately three feet (one meter) from any large
Quick Start Guide 41
Quick Start Guide December 2019
structure, building, or conductive surface to allow for clear communication
with other devices.
Figure 8-1: Antenna Position
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December 2019 Quick Start Guide
8.3 Conduit entries
Upon installation, ensure that each conduit entry is either sealed with a
conduit plug using appropriate thread sealant or has a conduit fitting or
cable gland installed with appropriate thread sealant.
Figure 8-2: Conduit Entries
A. Conduit entries
8.4
Quick Start Guide 43
Choosing an installation location and position
When choosing an installation location and position, take into account
access to the transmitter for ease of power module and sensor replacement.
For best performance, install the antenna vertically with space between
objects in a parallel metal plane, such as a pipe or metal framework, as the
pipes or framework may adversely affect the antenna's performance.
The Rosemount 928 is a diffusion-based gas monitor. This means that the
target gas must actually come into contact with the electrochemical sensor
for the device to register a signal. Each target gas has a unique density and
behaves differently depending on the density of the surrounding
Quick Start Guide December 2019
atmosphere. For example, hydrogen sulfide is considered a heavier-than-air
gas and tends to settle in low-lying areas when released into the air.
Install all transmitters with the sensor module facing downwards. Install
devices with sensors for heavier-than-air gases close to ground level, ideally
between 12 in. (30.5 cm) above the ground and a breathing zone of a
worker (3- 6 ft. [0.9 - 1.8 m] above grade level).
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9 Electrical
9.1 Handling the power module
The Rosemount 928 is self-powered. The included Emerson 701 SmartPower
Module-Black contains two "C" size primary lithium/thionyl chloride
batteries. Each battery contains approximately .1 oz. (2.5 grams) of lithum,
for a total of .2 oz. (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 power module are maintained. Take care to prevent
thermal, electrical, or mechanical damage. Protect contacts to prevent
premature discharge.
CAUTION
Equipment damage
The Power Module may be damaged if dropped from heights in excess of 20
ft. (6 m).
Use caution when handling the power module.
9.2 Making electrical connections (Rosemount 928XSS01 and 928XUT01 only)
Make electrical connections through the cable entry in the side of the
connection head. Be sure to provide adequate clearance for cover removal.
See Conduit entries
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10 Verify operating atmosphere
Verify that the operating atmosphere of the transmitter and the sensor is
consistent with the appropriate hazardous locations certifications.
Table 10-1: Temperature Guidelines
Operating limit Transmitter storage limit Sensor storage
-40 to 140 °F
-40 to 60 °C
-40 to 185 °F
-40 to 85 °C
recommendation
34 to 45 °F
1 to 7 °C
Note
The electrochemical cells in the sensor have a limited shelf life. Store sensor
modules in a cool location that is not excessively humid or dry. Storing
sensors for periods longer than three months may shorten their useful
service life.
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11 Install the transmitter
The transmitter is designed to use the B4 Universal Mounting Bracket. This
curved, stainless steel bracket includes a U-bolt and fasteners for mounting
the transmitter to a 2-in. (50.8 mm) pipe or pole. The B4 bracket attaches
directly to the transmitter. You can also use the B4 bracket in other
mounting configurations, such as mounting the transmitter to a wall or a
panel.
11.1 Pipe mount
Required equipment
• Mounting kit (part number 03151-9270-0004)
— One 2-in. (50.8 mm) U-bolt assembly
— One B4 mounting bracket
— Two 5/16-18 x 1¼-in. bolts
— Two washers
• A ¼-in. combination wrench and adjustable wrench
Quick Start Guide 47
Quick Start Guide December 2019
Figure 11-1: Pipe Mounting
Dimensions are in inches [millimeters].
A. 2-in. bolt for pipe mounting (clamp shown)
B. 5/16-18 x 1¼-in. bolts for transmitter mounting
11.2
48 Emerson.com/Rosemount
Panel mount
Required equipment
• Mounting kit (part number 03151-9270-0004)
— One B4 mounting bracket
— Two ¼-in. x 1¼-in. bolts
• A 5/16-in. combination wrench or adjustable wrench
• A ¼-in. combination wrench or adjustable wrench
• Two 5/16-18 bolts with nuts and washers (not included)
December 2019 Quick Start Guide
Figure 11-2: Panel Mounting
A. 5/16-18 bolts for panel mounting (not supplied)
B. 5/16-18 x 1¼-in. bolts for transmitter mounting
Dimensions are in inches [millimeters].
11.3
Quick Start Guide 49
Rotate LCD display
You can rotate the LCD display in 90 degree increments by squeezing the
two tabs, pulling the LCD display out, rotating it, and snapping it back into
place.
Note
Although you can rotate the LCD display, always install the transmitter with
the sensor facing downwards.
If the LCD display pins are inadvertently removed from the interface board,
carefully reinsert the pins before snapping the LCD display back into place.
Note
Use only Rosemount Wireless LCD Display part number 00753-9004-0002.
Quick Start Guide December 2019
11.4 Ground the transmitter
The transmitter operates with the housing grounded or floating. Floating
systems, however, can cause extra noise that may affect many types of
readout devices. If the signal appears noisy or erratic, grounding at a single
point may solve the problem. Ground the electronics enclosure in
accordance with local and national installation codes. Ground the
electronics using the internal or external case grounding terminal.
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12 Verify wireless network communication
In order for the transmitter to communicate with the wireless gateway, and
ultimately the host system, you must configure the transmitter to
communicate with the wireless network. This step is the wireless equivalent
of connecting wires from a transmitter to the host system. If the network ID
and join key are not identical, the transmitter will not communicate with the
network.
You may obtain the network ID and join key from the Wireless Gateway on
the Setup → Network → Settings page on the web server, shown in Figure
12-1.
Figure 12-1: Wireless Gateway Network Settings
Refer to Joining the transmitter to a wireless network.
12.1
Quick Start Guide 51
Verify network join status
The chevron-shaped status bar at the top of the LCD screen indicates the
progress of the network join process. When the status bar is filled, the device
is successfully connected to the wireless network.
Refer to Figure 12-2.
Quick Start Guide December 2019
Figure 12-2: Network Status Bar
12.2 Verify communication using Field Communicator
Procedure
1. On the Overview screen, select Service Tools.
2. On the Service Tools screen, select Communications.
3. Verify the following communications information.
• Communication status: Displays whether the device is connected
to the wireless network.
• Join Mode: Displays the current join mode. Select Join Mode to
change the way that the device joins the wireless network.The
default option is Attempt to join immediately on powerup or
reset. Select Send twice to update the join mode.
• Neighbor Count: Displays the number of available neighboring
devices.
• Advertisement Count: Displays the number of advertisement
packets received.
4. When finished, select Back to return to the Communications screen.
12.3
52 Emerson.com/Rosemount
Verify communication using AMS Wireless Configurator
Complete the following steps to verify communications on the device using
the AMS Wireless Configurator.
Procedure
1. Open AMS Wireless Configurator.
2. In the Device Manager pane, expand the wireless network menu.
3. Expand the wireless gateway menu.
4. Select the device list.
5. In the device panel, double-click the device icon.
6. Select Service Tools.
7. In the Service Tools pane, select Communications.
December 2019 Quick Start Guide
8. On the Communications tab, in the Join Status field, verify that all four
network join steps are completed.
12.4 Verify communication using the Wireless Gateway
Open the Wireless Gateway web interface. This page shows whether the
device has joined the network and is communicating properly.
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13 Verify operation
There are four ways to verify operation:
• Transmitter LCD display
• Handheld communication device
• Wireless Gateway's integrated web interface
• AMS Device Manager
If you have configured the transmitter with the network ID and join key and
sufficient time has passed, the transmitter will be connected to the network.
When the device has joined the network, it will be displayed in AMS Device
Explorer.
Figure 13-1: AMS Device Explorer
13.1 Verify LCD display operation
Procedure
1. Verify that the display items are correct.
The LCD displays the primary variable (Gas Concentration) by default.
The other variables are:
• Secondary variable (Gas Sensor Module Temperature)
• Tertiary variable (Electronics Temperature)
• Quaternary variable (Supply Voltage)
You may configure these variables to alternate displaying with the
primary variable at the configured update rate. Refer to Configuring
display options if you need to change the display items.
2. Verify that the display mode is correct.
Refer to Configuring the device display mode if you need to change
the display mode.
• Disabled: The display is turned off. This is useful if the display will
never be viewed locally.
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• On Demand: The display is on when the transmitter 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. Press the Diagnostic button to display the TAG, Device ID, Network ID,
Network Join Status, and Device Status screens.
13.2 If there is an immediate alarm
WARNING
Alarm
If the device joins the network and immediately issues an alarm, respond as
though the alarm is real until it is proven false.
If the alarm is false, it is likely due to sensor configuration. Verify the sensor
configuration, alert set points, and alarm set points.
13.3 Troubleshoot communication
If the device is not joined to the network after power up, verify the correct
configuration of the network ID and join key and verify that active
advertising has been enabled on the wireless gateway. The network ID and
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join key in the device must match the network ID and join key of the wireless
gateway.
You may obtain the network ID and join key from the wireless gateway on
the Setup → Network → Setttings page on the web interface. You may
change the Network ID and Join Key if necessary. Refer to Joining the
transmitter to a wireless network.
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14 External alarm device electrical connections
The discrete output of the transmitter (Rosemount 928XSS01 and
928UTX01) can trigger an optional, customer-supplied external alarm
device.
Note
The transmitter cannot power external devices. It acts as a switch that closes
the power circuit of a connected external device activated by a HI-HI alarm if
configured to do so.
You can configure an external power supply and alert device to issue a local
alarm when the detected gas concentration level exceeds the specified high
concentration threshold. You can configure the local alarm to latch the
alarm output until the alarm is manually cleared or query the device to
detect whether this option is installed. Examples of alarm mechanism
options include:
• Audible alarm
• Visual alarm (for example, a flashing light)
• Initiate action (for example, close valves, initiate facility evacuation, call
emergency services)
WARNING
Alarm
If installing an optional, customer-supplied external alarm device, verify
proper function.
Verify that gas concentrations in the area have dissipated to a safe level
before clearing local or digital alarms.
When connecting an external device to the monitor'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.
The transmitter does not need to be connected to a wireless network for
the external alarm device to function. However, the low battery, no
measurement, or sensor failure alerts will not be available.
There are two possible connection methods for the external alarm device:
• Four-wire: This connection method (most common) uses a set of two
wires for an Intrinsically Safe (IS) input power supply. Another set of two
input wires is used for a separate IS alarm mechanism.
• Two-wire: This connection method combines an IS power source, such as
an internal battery, and alarm device into one package.
You may also add an optional, customer-supplied alarm suppression button.
Quick Start Guide 57
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14.1 Connect an external alarm device
Procedure
1. On the transmitter's main housing, remove the rear housing cover to
expose the terminal block.
A. +Barrier power
B. -Barrier power
C. +Output to alarm
D. -Output to alarm
E. +Comm terminal
F. -Comm terminal
2. On the main housing, remove one of the conduit plugs.
3. Route the barrier power and alarm output wiring into the main
housing.
4. Connect the wiring to the external device on the terminal block
according to the terminal labels. Do one of the following:
Note
Shield alarm wiring for noise immunity.
• Perform four-wire installation. This is the most common
configuration. Refer to Figure 14-1.
58 Emerson.com/Rosemount
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Figure 14-1: Four-Wire Installation
A. Intrinsically Safe power (in)
B. External alarm
C. External alarm suppression button (optional)
• Perform two wire installation. Refer to Figure 14-2.
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Quick Start Guide December 2019
Figure 14-2: Two-Wire Installation
A. Voltage in
B. External alarm with Intrinsically Safe power
C. External alarm suppression button (optional)
5. Connect the wiring to the external device according to the
manufacturer's instructions.
6. Verify that the external device functions properly.
a) Perform a bump test.
Refer to the Bump Testing section in the Rosemount 928
Wireless Gas Monitor Reference Manual.
b) If available, use the external device's manual test function to
verify proper function.
Refer to the external device documentation for more
information.
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15 Product certifications
Rev 3.3
15.1 European Directive information
The most recent revision of the EC Declaration of Conformity can be found
at www.Emerson.com/Rosemount under Documentation.
15.2 Telecommunication compliance
All wireless devices require certification to ensure that they adhere to
regulations regarding the use of the RF spectrum. Nearly every country
requires this type of product certification. Emerson is working with
governmental agencies around the world to supply fully compliant products
and remove the risk of violating country directives or laws governing
wireless device usage.
15.3 FCC and IC
This device complies with Part 15 of the FCC rules. Operation is subject to
the following conditions: This device may not cause harmful interference.
This device must accept any interference received, including interference
that may cause undesired operation. This device must be installed to ensure
a minimum antenna separation distance of 7.81 in. (20 cm) from all persons.
15.4 Ordinary location certification
As standard, the transmitter has been examined and tested to determine
that the design meets basic electrical, mechanical, and fire protection
requirements by a nationally recognized testing laboratory (NRTL) as
accredited by the Federal Occupational Safety and Health Administration
(OSHA).
15.5
15.6
15.6.1 USA
Quick Start Guide 61
Installing in North America
The U.S. National Electrical Code® (NEC) and Canadian Electrical Code (CEC)
permit the use of Division marked equipment in Zones and Zone marked
equipment in Divisions. The markings must be suitable for the area
classification, gas, and temperature class. This information is clearly defined
in their respective codes.
Hazardous location certificates
I5 U.S.A. Intrinsically Safe (IS)
Certificate
CSA 70138122
Quick Start Guide December 2019
Standards
FM 3600–2011, FM 3610–2010, UL Standard 50—11th
edition, UL 61010–1—3rd edition, ANSI/ISA–60079–0
(12.00.01)–2013, ANSI/ISA–60079–11 (12.02.01)–2014
Markings
IS CL I, DIV 1, GP A, B, C, D T4 Ex ia IIC T4 Ga;
T4 (-40 °C ≤ Ta ≤ +50 °C) when installed according to
Rosemount drawing 00928-1010;
Class 1, Zone 0, AEx ia IIC T4 Ga;
Type 4X
Table 15-1: Entity Parameters
Input (power) parameters Output (alarm) parameters
Ui - 28 Vdc Uo - 28 Vdc
Ii - 93.3 mA Io -93.3 mA
Pi - 653 mW Po - 653 mW
Ci - 5.72 nF Co - 77 nF
Li - 0 Lo - 2 mH
Table 15-2: HART® Comm Parameters
Uo - 1.9 Vdc
Io - 32 µA
Special Conditions for Safe Use (X):
1. For use only with the Emerson Model 701PBKKF, the Computation
Systems, Inc. MHM-89004, or the Perpetuum Ltd. IPM71008/
IPM74001.
2. The surface resistivity of the antenna is greater than 1 GΩ. To avoid
electrostatic discharge buildup, it must not be rubbed or cleaned
with solvents or dry cloth.
3. Substitution of components may impair Intrinsic Safety.
15.6.2 Canada
I6 Canada Intrinsically Safe (IS)
Certificate
Standards
62 Emerson.com/Rosemount
CSA 70138122
CAN/CSA C22 No. 0–10, CAN/CSA C22.2 No. 94.2-15, CAN/
CSA-60079-0–2015, CAN/CSA-60079-11–2014, CAN/CSAC22.2 61010-1–2012
December 2019 Quick Start Guide
Markings
IS CL I, DIV 1, GP A, B, C, D T4;
Ex ia IIC T4 Ga;
T4 (-40 °C ≤ Ta ≤ +50 °C) when installed according to
Rosemount drawing 00928-1010;
Type 4X
Refer to Table 15-1.
Special Conditions for Safe Use (X):
1. For use only with the Emerson Model 701PBKKF, the Computations
Systems, Inc. MHM-89004, or the Perpetuum Ltd. IPM71008/
IPM74001.
Pour utilization uniquement avec Emerson Model 701PBKKF,
Computation Systems, Inc MHM-89004, ou Perpetuum Ltd. IPM71008/
IPM74001.
2. The surface resistivity of the antenna is greater than 1 GΩ. To avoid
electrostatic discharge buildup, it must not be rubbed or cleaned
with solvents or a dry cloth.
La résistivité de surface du boȋtier est supérieure à un gigaohm. Pour
éviter l’accumulation de charge électrostatique, ne pas frotter ou
nettoyer avec des produits solvants ou un chiffon sec.
3. Substitution of components may impair Intrinsic Safety.
La substitution de composants peut compromettre la sécurité
intrinsèque.
15.6.3 Europe
I1 ATEX Intrinsically Safe (IS)
Certificate
Standards
Markings
Refer to Table 15-1 and Table 15-2.
Special Conditions for Safe Use (X):
1. Under certain extreme circumstances, the non-metallic parts
incorporated in the enclosure of this equipment may generate an
ignition capable of electrostatic charge. Therefore, the equipment
shall not be installed in a location where the external conditions are
Quick Start Guide 63
Sira17ATEX2371X
EN 60079-0:2012 + A11:2013, EN 60079-11:2012
II1 G
Ex ia IIC T4 Ga;
T4 (-40 °C ≤ Ta ≤ +50 °C)
Type IP66
Quick Start Guide December 2019
conducive to the build-up of electrostatic charge on such surfaces. In
addition, the equipment shall only be cleaned with a damp cloth.
2. The transmitter may contain more than 10 percent aluminum and is
considered a potential risk ignition by impact or friction. Care must
be taken into account during installation and use to prevent impact
or friction.
3. The equipment shall be powered by Emerson 701PBKKF. An
alternative power source shall be the CSI MHM-89004, as these
devices have output parameters that are equal or less onerous than
the parameters of the 701PBKKF.
4. Only the 375, 475, or AMS Trex Communicators may be used with
the Rosemount 928.
15.6.4 International
I7 IECEx Intrinsically Safe (IS)
Certificate
Standards
Markings
IECEx SIR 17.0091X
IEC 60079-0:2011, IEC 60079-11:2011
Ex ia IIC T4 Ga;
T4 (-40 °C ≤ Ta ≤ +50 °C)
Type IP66
Refer to Table 15-1 and Table 15-2.
Special Conditions for Safe Use (X):
1. Under extreme circumstances, the non-metallic parts incorporated in
the enclosure of this equipment may generate an ignition-capable
level of electrostatic charge. Therefore, the equipment shall not be
installed in a location where the external conditions are conducive to
the build-up of electrostatic charge on such surfaces. In addition, the
equipment shall only be cleaned with a damp cloth.
2. The transmitter may contain more than 10 percent aluminum and is
considered a potential risk ignition by impact or friction. Care must
be taken into account during installation and use to prevent impact
or friction.
3. The equipment shall be powered by Emerson 701PBKKF. An
alternative power source shall be the the CSI MHM-89004, as these
devices have output parameters that are equal or less onerous than
the parameters of the 701PBKKF.
4. Only the 375, 475, or AMS Trex Communicators may be used with
the Rosemount 928.
64 Emerson.com/Rosemount
December 2019 Quick Start Guide
15.6.5 China
I3 NEPSI Intrinsically Safe (IS)
Certificate
Standards
Markings
Special Conditions for Safe Use (X):
See certificate.
15.6.6 Japan
CML Intrinsically Safe (IS)
Certificate
Standards
Markings
Special Conditions for Safe Use (X):
See certificate.
GYJ18.1438X
GB 3836.1-2010, GB 3836.4-2010, GB 3836.20-2010
Ex ia IIC T4 Ga (Ta= -40 °C to +50 °C)
CML 18JPN2345X
IEC 60079-0:2011, IEC 60079-11:2011
Ex ia IIC T4 Ga;
T4 (-40 °C ≤ Ta ≤ +50 °C)
Quick Start Guide 65
Quick Start Guide December 2019
16 Declaration of Conformity
66 Emerson.com/Rosemount
December 2019 Quick Start Guide
Quick Start Guide 67
*00825-0100-4928*
00825-0100-4928, Rev. AE
Quick Start Guide
December 2019
GLOBAL HEADQUARTERS
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Shakopee, MN 55379
+1 866 347 3427
+1 952 949 7001
safety.csc@emerson.com
MIDDLE EAST AND AFRICA
Emerson Automation Solutions
Emerson FZE
Jebel Ali Free Zone
Dubai, United Arab Emirates, P.O. Box
17033
+971 4 811 8100
+971 4 886 5465
safety.csc@emerson.com
Linkedin.com/company/Emerson-
Automation-Solutions
twitter.com/rosemount_news
Facebook.com/Rosemount
youtube.com/RosemountMeasurement
EUROPE
Emerson Automation Solutions
Neuhofstrasse 19a PO Box 1046
CH-6340 Baar
Switzerland
+41 (0) 41 768 6111
+41 (0) 41 768 6300
safety.csc@emerson.com
ASIA-PACIFIC
Emerson Automation Solutions
1 Pandan Crescent
Singapore 128461
Republic of Singapore
+65 6 777 8211
+65 6 777 0947
safety.csc@emerson.com
©
2019 Emerson. All rights reserved.
The Emerson logo is a trademark and service
mark of Emerson Electric Co. Rosemount is a
mark of one of the Emerson family of companies.
All other marks are the property of their
respective owners.
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