Emerson Rosemount 628 User manual
Quick Start Guide
00825-0100-4628, Rev AD
May2023
Rosemount™ 628 Universal Gas
Sensor
Integrated Wireless Gas Monitoring
Safety information
NOTICE
This guide provides configuration and basic installation information for the Rosemount 628
Wireless Gas Monitor. It does not provide diagnostic, maintenance, service, troubleshooting,
Intrinsically Safe (IS) installation, or ordering information. For more information, refer to the
Rosemount 928 Wireless Gas Monitor Reference Manual.
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.
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.
WARNING
Electrical shock
Electrical shock could cause death or serious injury.
Avoid contact with the leads and terminals. High voltage that may be present on leads can
cause electrical shock.
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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.
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.
Contents
Overview....................................................................................................................................... 5
Install the sensor..........................................................................................................................7
Bench configuration.................................................................................................................. 10
Guided setup.............................................................................................................................. 12
Calibrating the sensor............................................................................................................... 22
Verify operating atmosphere................................................................................................... 44
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Quick Start Guide 3
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1 Overview
The Rosemount™ 628 Wireless Gas Monitor is compatible with the
Rosemount 928 Wireless Gas Monitor.
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 628 Universal Gas Sensor only with the Rosemount
928 Transmitter.
CAUTION
The Ingress Protection (IP) filter must be installed.
If the IP filter is not installed, then damage may occur to the sensor
inside the Rosemount 628 Universal Gas Sensor.
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 does not block the white filter
media. Refer to Figure 1-1.
When handling the IP filter, avoid contact with the filter media.
Verify all three legs are fully latched by pushing upward on IP
filter leg.
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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Quick Start Guide 5
Figure 1-1: Ingress Protection 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 Figure 2.1. The seal between the transmitter housing and the
sensor assembly is designed to achieve a snug, airtight fit 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, then
remove the protective plastic cap from the sensor housing at
the bottom of the transmitter.
3. Before installing the module into the transmitter, confirm the
keying feature is aligned by rotating it into position.
4. Slide the sensor assembly up into the transmitter housing until
it is completely seated.
Note
The sensor contains a keying feature ensuring it cannot be
forced into the transmitter housing in an incorrect alignment.
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Quick Start Guide 7
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. After they are seated,
push up on th bottom of each of the latching tabs.
6. Allow the transmitter 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.
Table 2-1: Maximum warm-up times
Gas type Maximum warm-up period
Hydrogen sulfide (H2S) One minute
Oxygen (O2) Seven minutes
Carbon monoxide (CO) One minute
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Postrequisites
To remove the sensor, compress the latching tabs and pull
downward until it is released from the transmitter housing.
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Quick Start Guide 9
3 Bench configuration
To configure, you must install the sensor in a functional transmitter.
The transmitter receives any HART® communication from a handheld
Field Communicator or from an AMS Wireless Configurator.
Remove the rear housing cover to expose the terminal block and
HART communication terminals; then connect the power module to
power the device for configuration.
3.1 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 the Manual Setup section in the
Rosemount 928 Wireless Gas Monitor Reference Manual.
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.
3.2 Bench configure AMS Wireless Configurator
AMS Wireless Configurator is capable of connecting to devices
directly, using a HART® modem, or though a Wireless Gateway.
Procedure
1. In the AMS Device Manager pane, select the HART modem.
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