Rosemount 702 Hardware Revision
HART® Device Revision
Field Communicator Field Device Revision
Read this manual before working with the product. For personal and system safety, and for
optimum product performance, make sure to thoroughly understand the contents before
installing, using, or maintaining this product.
The United States has two toll-free assistance numbers and one international number.
Customer Central
1-800-999-9307 (7:00 a.m. to 7:00 P.M. CST)
National Response Center
1-800-654-7768 (24 hours a day)
Equipment service needs
International
1-(952) 906-8888
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 a Emerson Process
Management Sales Representative.
1
1
Dev v1, DD v4
www.rosemount.com
Rosemount 702 Wireless Temperature Transmitter may be protected by one or more U.S.
Patents pending. Other foreign patents pending.
Rosemount 702
NOTICE
NOTICE
Reference Manual
00809-0100-4702, Rev AA
September 2007
Explosions could result in death or serious injury:
Installation of this transmitter in an explosive environment must be in accordance
with the appropriate local, national, and international standards, codes, and
practices. Please review the approvals section of the 702 reference manual for any
restrictions associated with a safe installation.
• Before connecting a Field Communicator in an explosive atmosphere, ensure the
instruments are installed in accordance with intrinsically safe or non-incendive
field wiring practices.
Process leaks may cause harm or result in death.
• Install and tighten process connectors before applying pressure.
Electrical shock can result in death or serious injury.
• Avoid contact with the leads and terminals. High voltage that may be present on
leads can cause electrical shock.
The Rosemount 702 and all other wireless devices should be installed only after the
1420 Wireless Gateway has been installed and is functioning properly. Wireless devices
should also be powered up in order of proximity from the 1420 Wireless Gateway,
beginning with the closest. This will result in a simpler and faster network installation.
Shipping considerations for wireless products (Lithium Batteries):
The unit was shipped to you without the battery installed. Please remove the battery pack
from the unit prior to shipping.
Primary lithium batteries are regulated in transportation by the U. S. 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 responsibility of the shipper to ensure
compliance with these or any other local requirements. Please consult current regulations
and requirements before shipping.
The battery pack 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. Care should be taken to
prevent thermal, electrical or mechanical damage. Contacts should be
protected to prevent premature discharge.
Battery hazards remain when cells are discharged.
Batteries should be stored in a clean and dry area. For maximum battery life,
storage temperature should not exceed 30° C.
Reference Manual
00809-0100-4702, Rev AA
September 2007
Rosemount 702
Table of Contents
Shipping considerations for wireless products (Lithium Batteries): 0-2
SAFETY MESSAGESInstructions and procedures in this section may require special precautions to
ensure the safety of the personnel performing the operations. Information that
potentially raises safety issues is indicated by a warning symbol ( ). Please
refer to the following safety messages before performing an operation
preceded by this symbol.
Warnings
Failure to follow these installation guidelines could result in death or
serious injury.
• Make sure only qualified personnel perform the installation.
Explosions could result in death or serious injury.
• Before connecting a 375 Field Communicator in an explosive atmosphere, make
sure 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.
Process leaks could result in death or serious injury.
• Do not remove the thermowell while in operation.
• Install and tighten thermowells and switches before applying pressure
Electrical shock could cause death or serious injury.
• Use extreme caution when making contact with the leads and terminals.
www.rosemount.com
Reference Manual
00809-0100-4702, Rev AA
Rosemount 702
September 2007
OVERVIEW
ManualThis manual is designed to assist in the installation, operation, and
maintenance of Rosemount 702.
Section 1: Overview
•Manual and Transmitter Overview
•Considerations
•Return of Materials
Section 2: Configuration
•Device switch Configuration
•Device Network Configuration
Section 3: Mounting
•Mount the switch
•Switch Assembly/Leads
•Grounding
•LCD Rotation
Section 4: Commissioning
•Network Status
•Verify Operation
Section 5: Operation and Maintenance
•LCD Screen Messages
•LCD Rotation
•Battery Replacement
Appendix A: Specifications and Reference Data
•Specifications
•Dimensional drawings
•Ordering Information
Appendix B: Approvals
•Product Certifications
•Installation Drawings
Transmitter Features of the Rosemount 702 include:
•An installation-ready solution that provides a variety of mounting
options, transmitter configurations, and switches/thermowells
•Flexibility to meet your most demanding applications
•Wireless output with >99% data reliability delivers rich HART data,
protected by industry leading security
•Single or dual switch input with logics for limit contact and opposing
contact applications.
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Reference Manual
00809-0100-4702, Rev AA
September 2007
•The integral LCD conveniently displays the primary switch input and
diagnostics of the transmitter
•Simple and easy installation practices already used today for robust
installations
Rosemount 702
CONSIDERATIONS
GeneralSwitches produce either an open or closed signal. With simple HART
configuration the Rosemount 702 converts the switch signal to a
wireless-enabled signal.l.
CommissioningThe transmitter can be commissioned before or after installation. It may be
useful to commission it on the bench, before installation, to ensure proper
operation and to become familiar with its functionality. When applicable, make
sure the instruments are installed in accordance with intrinsically safe or
non-incendive field wiring practices. The device will be powered whenever the
battery is installed. To avoid depleting the battery, make sure it is removed
when the device is not in use.
MechanicalLocation
When choosing an installation location and position, take into account the
need for access to the transmitter. For best performance, the antenna should
be vertical with some space between objects in a parallel metal plane such as
a pipe or metal framework, as the pipes or framework may adversely affect
the performance of the antenna.
Electrical Battery
The Rosemount 702 Wireless Temperature transmitter is battery powered.
The battery pack with the wireless unit contains 2 “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 battery pack are maintained. Care should be taken to
prevent thermal, electrical or mechanical damage. Contacts should be
protected to prevent premature discharge.
Use caution when handling the battery pack. The battery pack may be
damaged if dropped from heights in excess of 20 feet.
Switch
Make switch connections through the cable entry in the side of the connection
head. Be sure to provide adequate clearance for cover removal.
EnvironmentalVerify that the operating atmosphere of the transmitter is consistent with the
appropriate hazardous locations certifications.
Temperature Effects
The transmitter will operate within specifications for ambient temperatures
between –40 and 185 °F (–40 and 85 °C). Heat from the process is
transferred from the switch to the transmitter housing. If the expected process
temperature is near or beyond specification limits, consider the use of
additional thermowell and extension, or remote mounting the transmitter to
thermally isolate it from the process.
1-3
Rosemount 702
Housing Temperature Rise, Above
Ambient °C (°F)
3456789
0
60 (108)
50 (90)
40 (72)
30 (54)
20 (36)
10 (18)
4.2
55
Extension Length (in.)
815 °C (1500 °F) Process Temperature
540 °C (1000 °F) Process Temperature
250 °C (482 °F) Process Temperature
Figure 1-1. 702 Transmitter
Connection Head Temperature
Rise vs. Extension Length
Reference Manual
00809-0100-4702, Rev AA
September 2007
Figure 1-1 provides an example of the relationship between transmitter
housing temperature rise and thermowell extension length.
Example
The transmitter specification limit is 85 °C. If the ambient temperature is 55 °C
and the max process temperature to be measured is 815 °C, the maximum
permissible connection head temperature rise is the transmitter specification
limit minus the ambient temperature (moves 85 to 55 °C), or 30 °C.
In this case, an extension of 5” meets this requirement, but 6” provides an
additional margin of thermowell protection, thereby reducing risk of ambient
thermal damage.
Temperature Limits
Operating LimitStorage Limit
With LCD Display–4 to 175 °F
–20 to 80 °C
Without LCD Display –40 to 185 °F
–40 to 85 °C
–40 to 185 °F
–40 to 85 °C
–40 to 185 °F
–40 to 85 °C
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Reference Manual
00809-0100-4702, Rev AA
September 2007
Rosemount 702
RETURN OF MATERIALSTo expedite the return process in North America, call the Emerson Process
Management National Response Center toll-free at 800-654-7768. This
center, available 24 hours a day, will assist you with any needed information
or materials.
The center will ask for the following information:
•Product model
•Serial numbers
•The last process material to which the product was exposed
The center will provide
•A Return Material Authorization (RMA) number
•Instructions and procedures that are necessary to return goods that
were exposed to hazardous substances
For other locations outside North America, please contact an Emerson
Process Management sales representative for further instructions.
NOTE
If the device has been exposed to a hazardous substance, a Material Safety
Data Sheet (MSDS) must be included with the returned materials. An MSDS
is required by law to be available to people exposed to specific hazardous
substances.
SHIPPING CONSIDERATIONS FOR WIRELESS PRODUCTS (LITHIUM
BATTERIES):
The unit was shipped to you without the battery installed. Please remove the
battery pack prior to shipping the unit.
Primary lithium batteries (charged or discharged) are regulated in
transportation by the U.S. 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 responsibility of the shipper to ensure compliance
with these or any other local requirements. Please consult current regulations
and requirements before shipping.
SAFETY MESSAGESInstructions and procedures in this section may require special precautions to
ensure the safety of the personnel performing the operations. Information that
potentially raises safety issues is indicated by a warning symbol ( ). Please
refer to the following safety messages before performing an operation
preceded by this symbol.
Warnings
Failure to follow these installation guidelines could result in death or
serious injury.
• Make sure only qualified personnel perform the installation.
Explosions could result in death or serious injury.
• Before connecting a 375 Field Communicator in an explosive atmosphere, make
sure 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.
Process leaks could result in death or serious injury.
• Do not remove the thermowell while in operation.
• Install and tighten thermowells and sensors before applying pressure
Electrical shock could cause death or serious injury.
• Use extreme caution when making contact with the leads and terminals.
www.rosemount.com
Reference Manual
00809-0100-4702, Rev AA
Rosemount 702
September 2007
Switch ConnectionsThe 702 is compatible with a number of simple switches. Figure 2-1 shows
the correct input connections to the switch terminals on the transmitter. To
ensure a proper switch connection, anchor the switch lead wires into the
appropriate compression terminals and tighten the screws.
Switch Leads
If the switch is installed in a high-voltage environment and a fault condition or
installation error occurs, the sensor leads and transmitter terminals could
carry lethal voltages. Use extreme caution when making contact with the
leads and terminals.
Use the following steps to wire the sensor and supply power to the
transmitter:
1.Remove the transmitter enclosure cover (if applicable).
2.Attach the sensor leads according to the wiring diagrams
3.Connect the battery.
4.Verify the connection by observing the LCD
5.Reattach and tighten the cover (if applicable).
DEVICE SENSOR
CONFIGURATION
DEVICE NETWORK
CONFIGURATION
Begin by removing the battery-side housing cover. This will expose the
terminal block and HART communication terminals. Connect the battery to
supply power for configuration.
The Rosemount 702 will receive any HART communications from a handheld
Field Communicator, or AMS. When using a Field Communicator, any
configuration changes must be sent to the transmitter by using the Send key
(F2). AMS configuration changes are implemented when the Apply button is
clicked.
AMS Wireless and Direct Connections
AMS is capable of connecting to devices either directly, using a HART
modem, or through wireless via the 1420. When configuring on the bench
using a HART modem, double click the device icon (or right click and select
Configure/Setup), then choose the Configure/Setup tab. Configure the device
settings using the Direct Connection menu. When configuring wirelessly via
the 1420, double click the device icon (or right click and select
Configure/Setup), then choose the Configure/Setup tab. Configure the device
settings using the Wireless Connection menu.
In order to communicate with the 1420 Wireless Gateway, and ultimately the
Information System, the transmitter must be configured to communicate with
the wireless network. This step is the wireless equivalent of connecting wires
from a transmitter to the information system.
Using a Field Communicator or AMS, enter the Network ID and Join Key so
that they match the Network ID and Join Key of the 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. The Network ID and Join
Key may be obtained from the 1420 Wireless Gateway on the
Setup>Network>Settings page on the web server.
2-2
Reference Manual
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4
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00809-0100-4702, Rev AA
September 2007
Figure 2-1. 702 Terminal Block
Rosemount 702
The final device network configuration piece is the Update Rate. This by
default is 5 minutes. This may be changed at commissioning, or at any time
via AMS or the 1420 Wireless Gateway’s web server. The Update Rate
should be between 15 seconds and 60 minutes. For networks of up to 100
wireless devices, fastest Update Rate is 60 seconds. For networks of 50 or
fewer devices, the fastest Update Rate is 15 seconds
When device configuration is completed, remove the battery and replace the
battery cover. Tighten the cover to the proper tension for safety approvals.
To access the Network Settings using a 375 Field Communicator, enter the
following Fast Key Sequence: 1, 3, 3.
Figure 2-2. 375 Field
Communicator Connections
Connect the HART communication leads to the COMM terminals on the
terminal block.
1
2
P/N 00753-9200-0020
3
COMM
4
For HART communication, a 702 DD is required.
2-3
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Reference Manual
00809-0100-4702, Rev AA
Rosemount 702
September 2007
HART Menu TreeFor ease of operation, changing setup, such as switch type, can be completed
in several locations.
Figure 2-3. Field Communicator Menu Tree
2-4
T
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