Emerson Rosemount 708 User manual

Quick Start Guide
00825-0200-4708, Rev DD
June 2022
Rosemount™ 708 Wireless Acoustic
Transmitter

Safety messages
NOTICE
This guide provides basic guidelines for the Rosemount 708. It does not provide instructions for
detailed configuration, diagnostics, maintenance, service, troubleshooting, or installations. Refer to
the Rosemount 708 Reference Manual for more instruction. This guide and the manual are available
electronically on Emerson.com/Rosemount.
WARNING
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. Review the approvals section of this
manual for any restrictions associated with a safe installation.
Before connecting a communicator in an explosive atmosphere, ensure the instruments in the
segment are installed in accordance with intrinsically safe or non-incendive field wiring practices.
WARNING
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 8 in. (20 cm) from
all persons.
The power module may be replaced in a hazardous area. The power module has surface resistivity
greater than one gigaohm and must be properly installed in the wireless device enclosure. Care must
be taken during transportation to and from the point of installation to prevent electrostatic charge
build-up.
Polymer enclosure has surface resistivity greater than one gigaohm. Care must be taken during
transportation to and from the point of installation to prevent a potential electrostatic charging
hazard.
NOTICE
Shipping considerations for wireless products.
The unit was shipped to you without the power module installed. Remove the power module prior to
shipping.
Each power module contains one “D” size primary lithium battery. 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. Consult current regulations and requirements
before shipping.
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Contents
Transmitter overview................................................................................................................... 5
Considerations............................................................................................................................. 6
Field Communicator connections.................................................................................................8
Installation................................................................................................................................... 9
Configuration.............................................................................................................................18
Verify operation......................................................................................................................... 22
Product Certifications.................................................................................................................27
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1 Transmitter overview
Figure 1-1: Rosemount 708 Wireless Acoustic Transmitter
A
C
B
E
D
A. Power module cover — power module is inside device; unscrew cap for
access
B. Waveguide — acoustic and temperature sensors
C. Electronics cover — cover is sealed and cannot be removed
D. Stainless steel mounting bands — used to connect the acoustic
transmitter to the piping
E. Pipe — the acoustic transmitter is installed directly to the pipe
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2 Considerations
2.1 Power-up sequence
The Emerson Wireless Gateway (Gateway) should be installed and
functioning properly before any wireless devices are powered. Install the
power module, SmartPower™ Solutions, model number 701PGN Green
Power Module, into the Rosemount 708 Transmitter to power the device.
This results in a simpler and faster network configuration. Enabling Active
Advertising on the Gateway ensures new devices are able to join the network
faster. For more information, see the Emerson Wireless Gateway Reference
Manual.
Figure 2-1: Power Module Installation
2.2 Antenna position
The antenna is internal to the acoustic transmitter. To achieve optimal
range, position the transmitter with the waveguide horizontal and the
power module closest to the ground as shown in Figure 2-2. Good
connectivity can also be achieved in other orientations. The antenna should
also be approximately 1 m (3 ft.) from any large structure, building, or
conductive surface to allow for clear communication to other devices. Refer
to best practices for additional information on optimal mounting locations
of device.
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Figure 2-2: Antenna Position
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3 Field Communicator connections
The power module needs to be installed in the device for the Field
Communicator to interface with the Rosemount 708. This transmitter uses
the green power module; order model number 701PGNKF. Field
communication with this device requires a HART® protocol-based Field
Communicator using the correct 708 DD. Field Communicator connections
are located on the power module. The power module is keyed and can only
be inserted in one orientation. Refer to Figure 3 for instructions on
connecting the Field Communicator to the Rosemount 708.
Figure 3-1: Connection Diagram
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4 Installation
4.1 Considerations
4.1.1 General
The Rosemount 708 Acoustic Wireless Transmitter measures the level of
ultrasonic acoustic noise and waveguide temperature. The Rosemount 708
Transmitter converts the acoustic and temperature measurements into
output data and alerts.
4.1.2 Wireless considerations
Power-up sequence
The Emerson Wireless Gateway (Gateway) should be installed and
functioning properly before any wireless devices are powered. Install the
power module, SmartPower™ Solutions, model number 701PGN Green
Power Module, into the Rosemount 708 Transmitter to power the device.
This results in a simpler and faster network configuration. Enabling Active
Advertising on the Gateway ensures new devices are able to join the network
faster. For more information, see the Emerson Wireless Gateway Reference
Manual.
Figure 4-1: Power Module Installation
Antenna position
The antenna is internal to the acoustic transmitter. To achieve optimal
range, position the transmitter with the waveguide horizontal and the
power module closest to the ground as shown in Figure 4-2. Good
connectivity can also be achieved in other orientations. The antenna should
also be approximately 1 m (3 ft.) from any large structure, building, or
conductive surface to allow for clear communication to other devices. Refer
to best practices for additional information on optimal mounting locations
of device.
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Figure 4-2: Antenna Position
Recommended practices
When mounting the device, recommended practices should be considered
to achieve the best wireless performance. See Rosemount 708 Reference
Manual for more information on recommended practices.
Field Communicator connections
The power module needs to be installed in the device for the Field
Communicator to interface with the Rosemount 708 Transmitter. This
transmitter uses the green power module; order model number 701PGN.
Field communication with this device requires a HART®-based Field
Communicator using the correct Rosemount 708 DD. Field Communicator
connections are located on the power module. The power module is keyed
and can only be inserted in one orientation. Refer to Figure 4-3 for
instructions on connecting the Field Communicator to the transmitter.
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Figure 4-3: Connection Diagram
4.1.3 Mechanical
Location
When choosing a location and position, consider access to the power
module compartment for easy power module replacement.
Electronics cover
The electronics cover is sealed and cannot be removed. Do not attempt to
unscrew the cover.
4.1.4 Electrical
Power module
The Rosemount 708 Transmitter is self-powered. The power module
contains one “D” size primary lithium/thionyl chloride battery. Each battery
contains approximately 5.0 grams of lithium. Under normal conditions, the
battery materials are self-contained and are not reactive as long as the
battery and the power module are maintained. Care should be taken to
prevent thermal, electrical, or mechanical damage. Contacts should be
protected to prevent premature discharge.
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CAUTION
Use caution when handling the power module, it may be damaged if
dropped from heights exceeding 6.10 m (20 ft).
4.1.5 Environmental
Verify the operating atmosphere of the transmitter is consistent with the
appropriate hazardous locations certification.
Temperature effects
The transmitter will operate within specifications for ambient temperatures
between –40 and 85 °C (–40 and 185 °F).
Heat from the process is transferred to the transmitter housing. If the
process temperature is high, the ambient temperature will need to be lower
to account for heat transferred to the transmitter housing. See Table 4-1 for
ambient temperature derating. Refer to Table 4-2 for High Temperature
option (HT01) for ambient temperature derating.
Table 4-1: Ambient Temperature Derating
Process temperature Max ambient
°C °F °C °F
260 500 41 106
240 464 45 113
220 428 49 120
200 392 53 127
180 356 57 135
160 320 61 142
140 284 64 147
120 248 58 136
100 212 72 162
85 185 75 167
Table 4-2: Ambient Temperature Derating - HT01
Process temperature Max ambient
°C °F °C °F
550 1022 41 106
520 968 45 113
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Table 4-2: Ambient Temperature Derating - HT01 (continued)
Process temperature Max ambient
°C °F °C °F
490 914 47 117
460 860 49 120
430 806 51 124
400 752 53 127
370 698 56 133
340 644 58 136
310 590 60 140
280 536 62 144
260 500 63 145
4.1.6 Mounting installation considerations
Procedure
1. Inspect mounting bands periodically and re-tighten if necessary.
Some loosening may occur after initial installation due to thermal
expansion/contraction.
2. Ensure the waveguide is in direct contact with the pipe.
3. Insulate process piping to minimize ambient temperature effects
(see Figure 4-8). Insulation thickness over the top of the waveguide
foot should not exceed 2.54 cm (1 in.).
4. For best results, mount the transmitter within 15.24 cm (6 in.) of the
equipment being monitored.
5. The stainless steel mounting bands could be affected by stress
corrosion and potentially fail when in the presence of chlorides.
6. The transmitter should be installed such that steam or other high
temperature fluids do not directly impinge the housing of the device.
7. If installing the device on a steam trap, the device should be installed
on the upstream side of the trap.
4.2 Mounting
For high temperature mounting, see Mounting in a high temperature
application.
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Procedure
1. Locate the Rosemount 708 Transmitter on a horizontal section of
piping as close as possible to the equipment to be monitored. Align
the waveguide of the transmitter as shown in Figure 4-4
2. Ensure the mounting location is free of foreign matter and corrosion
to ensure good contact between the piping and waveguide.
3. Tighten each clamp to 10.2 N-m (90 in-lb). Trim the excess clamp
band material to prevent unwanted acoustic noise.
4. If commissioning the device, install the power module (see Power
module).
5. Ensure the power module cover is fully tightened to prevent
moisture ingress. The lip of the polymer power module cover should
be in contact with the surface of the polymer enclosure to ensure a
proper seal. Do not over tighten.
Example
Figure 4-4: Transmitter Orientation
Figure 4-5: Power Module Installation
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Note
Wireless devices should be powered up in order of proximity from the
Gateway, beginning with the closest device to the Gateway. This will result
in faster network formation.
4.2.1 Mounting in a high temperature application
High temperature mounting hardware should be used when process
temperatures exceed 260 °C (500 °F).
Procedure
1. Place the foot of the transmitter between the standoff mounting
hardware plates as shown in Figure 4-6.
2. Press standoff plates together so plates and transmitter foot are
aligned.
3. Tighten each screw to 90 in-lb (10.2 N-m).
4. Locate the Rosemount 708 Transmitter and high temperature
mounting hardware on a horizontal section of the piping as close as
possible to the equipment being monitored.
5. Ensure the mounting location is free of foreign matter and corrosion
to ensure good contact between the piping and mounting hardware.
6. Insert the U-bolt through the standoff mounting hardware.
7. Tighten each nut to 90 in-lb (10 N-m) Figure 4-7.
8. If commissioning the device, install the power module (see Figure
4-5).
9. Ensure the power module cover is fully tightened to prevent
moisture ingress. The lip of the polymer power module cover should
be in contact with the surface of the polymer enclosure to ensure a
proper seal. Do not over tighten.
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Example
Figure 4-6: High Temperature Mounting Hardware
Figure 4-7: Rosemount 708 Transmitter with High Temperature
Mounting Kit
A
B
A. For pipe sizes ½ to 1¼-in.
B. Bracket mounting
Dimensions are in inches (millimeters).
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Figure 4-8: Piping, Insulation Side View
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5 Configuration
5.1 Safety messages
Instructions 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 ( ). Refer to the following safety messages before performing an
operation preceded by this symbol.
WARNING
Failure to follow these installation guidelines could result in death or
serious injury.
Ensure only qualified personnel perform the installation.
Explosions could result in death or serious injury.
Before connecting a handheld communicator in an explosive atmosphere,
ensure the instruments are installed in accordance with intrinsically safe or
non-incendive field wiring practices. Verify that the operating environment
of the device is consistent with the appropriate hazardous locations
certifications.
Electrical shock could cause death or serious injury.
Use extreme caution when making contact with the leads and terminals.
Device must be installed to ensure a minimum antenna separation distance
of 8 in. (20 cm) from all persons.
5.2 Device configuration
Remove the power module cover and connect to the HART®
Communication terminals for configuration.
The Rosemount 708 Acoustic Wireless Transmitter will receive HART
Communication from a Field Communicator or AMS™ Device Manager.
When using a Field Communicator, any configuration changes must be sent
to the transmitter using the Send key (F2). AMS Device Manager
configuration changes are implemented when the Apply button is selected.
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5.2.1 Configure the device using AMS Device Manager
AMS Device Manager is capable of connecting to devices directly, using a
HART modem, or remotely using the Gateway.
Procedure
•To configure the Rosemount 708 Transmitter, double click (or right click
and select Configure/Setup) on the device icon that will appear below
either the HART modem or Gateway connection tree.
5.3 Device network configuration
To communicate with the Gateway (and ultimately the host system), the
transmitter must be configured to communicate with the wireless network.
Using a Field Communicator or AMS Device Manager, enter the network ID
and join key so they match the network ID and join key of the Gateway and
other devices in the network. If they do not match, the acoustic transmitter
will not communicate with the network. The network ID and join key may be
obtained from the Gateway on the Systems Settings>Network>Network
Settings page on the web server, shown in Figure 5-1.
Figure 5-1: Gateway Network Settings
5.3.1 Configure the network using AMS Device Manager
Procedure
1. Right click on the acoustic transmitter and select Configure.
2. When the menu opens, select Join Device to Network and follow the
method to enter the network ID and join key.
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5.3.2 Field Communicator
The network ID and join key may be changed in the wireless device by using
the following Fast Key sequence. Set both network ID and join key.
Function Key sequence Menu items
Join Device to Network 2, 1, 2 Network ID, Set Join Key
5.3.3 Fast Key sequence
Table 5-1 lists the Fast Key sequence for common transmitter functions.
Table 5-1: Rosemount 708 Fast Key Sequence
Function Key sequence Menu items
Device
Information
2, 2, 5 Tag, Long Tag, Descriptor, Message, Date,
Country, SI Unit Control
Guided Setup 2, 1 Basic Setup, Join Device to Network, Configure
Update Rates, Alert Setup
Manual Setup 2, 2 Wireless, Sensor, HART, Security, Device
Information, Power
Wireless 2, 2, 1 Network ID, Join Device to Network, Broadcast
Information
5.4 Remove power module
Procedure
•After the device has been configured, remove the power module and
replace the power module cover. The power module should be inserted
only when the device is ready for commissioning.
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