Emerson Rosemount 248 User manual

Quick Start Guide
00825-0300-4248, Rev AA
July 2020
Rosemount™ 248 Wireless Temperature
Transmitter

Contents
About this guide...........................................................................................................................3
Wireless considerations................................................................................................................6
Physical installation...................................................................................................................... 7
Verify operations........................................................................................................................11
Reference information............................................................................................................... 14
Power module replacement....................................................................................................... 17
Product certifications................................................................................................................. 19
Declaration of conformity.......................................................................................................... 23
China RoHS................................................................................................................................ 25
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1 About this guide
This guide provides basic guidelines to install the Rosemount 248 Wireless
Temperature Transmmitter. It does not provide instructions for detailed
configuration, diagnostics, maintenance, service, troubleshooting, or
installations. Refer to the Rosemount 248 Temperature Transmitter
Reference Manual for more instruction. The manual and this guide are also
available electronically at Emerson.com/Rosemount.
1.1 Safety messages
WARNING
Failure to follow these installation guidelines could result in death or
serious injury.
Ensure only qualified personnel perform the installation.
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.
Review the Hazardous Locations Certifications for any restrictions
associated with a safe installation.
Process leaks
Process leaks could result in death or serious injury.
Install and tighten thermowells and sensors before applying pressure.
Do not remove the thermowell while in operation.
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.
Unless marked, the conduit/cable entries in the transmitter housing use
a ½–14 NPT thread form. Entries marked “M20” are M20 × 1.5 thread
form. On devices with multiple conduit entries, all entries will have the
same thread form. Only use plugs, adapters, glands, or conduit with a
compatible thread form when closing these entries.
When installing in a hazardous location, use only appropriately listed or
Ex certified plugs, glands, or adapters in cable/conduit entries.
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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.
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.
NOTICE
Power module considerations (Green Power Module, model number
701PGNKF)
The green power module with the wireless unit contains one “D” size
primary lithium-thionyl chloride battery (model number 701PGNKF).
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 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.
Power modules should be stored in a clean and dry area. For maximum
battery life, storage temperature should not exceed 86 °F (30 °C).
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NOTICE
Shipping considerations for wireless products (lithium batteries: Green
Power Module, model number 701PGNKF)
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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2 Wireless considerations
2.1 Power up sequence
The Rosemount 248 Wireless Transmitter and all other devices should be
installed only after the Wireless Gateway (“Gateway”) has been installed and
is functioning properly. Wireless devices should also be powered up in order
of proximity from the Gateway, beginning with the closest. This will result in
a simpler and faster network installation. Enable Active Advertising on the
Gateway to ensure new devices join the network faster. For more
information see the Emerson Wireless Gateway Reference Manual.
2.2 Antenna position
The internal antenna is designed for multiple mounting orientations. The
transmitter should be mounted according to best practices for your
temperature measurement application. The transmitter should be
approximately 3 ft. (1 m) from any large structure or building to allow clear
communication to other devices.
2.3 Field Communicator connections
The power module must be installed in the device for the Field
Communicator to interface with the transmitter. The Field Communicator
connections are located on the Green Power Module. To communicate to
the transmitter, begin by removing the power module cover. This will
expose the HART® communication terminals located on the Green Power
Module. Next, connect the Field Communicator leads to the COMM port
connections on the Green Power Module.
This transmitter uses the Green Power Module; order model number
701PGNKF. The power module is keyed and can only be inserted in one
orientation. Field communication with this device requires a HART-based
Field Communicator. Refer to Figure 2-1 for instructions on connecting the
Field Communicator to the transmitter.
Figure 2-1: Field Communicator Connection
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3 Physical installation
The transmitter can be installed in one of two configurations: Direct Mount,
where the sensor is connected directly to the transmitter conduit entry, or
Remote Mount, where the sensor is mounted separately from the
transmitter housing, then connected to the transmitter via conduit. Choose
the installation sequence that corresponds to the mounting configuration.
Upon installation of the transmitter, ensure that the conduit entry has an
installed conduit fitting or cable gland with approved thread sealant.
3.1 Direct mount
The direct mount installation should not be used when installing with a
Swagelok® fitting.
Procedure
1. Remove the transmitter enclosure cover.
2. Remove the LCD display (if applicable).
3. Loosen the captive screws and remove LCD display adapter plate (if
applicable).
Figure 3-1: Exploded View of LCD Display Assembly
4. Attach the sensor to the transmitter housing using the threaded
conduit entry. Be sure to use an approved thread sealant on all
connections.
5. Attach the sensor wiring to the terminals as indicated on Figure
1Figure 5-1.
6. Reattach and secure LCD display adapter plate to 5 in-lb of torque (if
applicable).
7. Reattach the LCD display (if applicable).
8. Reattach and tighten the transmitter enclosure cover.
9. Remove the power module cover.
10. Connect the Green Power Module.
11. Reattach and tighten the power module cover.
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12. Always ensure a proper seal by installing the electronics housing
cover(s) so that polymer contacts polymer (i.e. no O-ring visible).
Use Rosemount O-rings.
13. Provide 1.75-in. (45 mm) of clearance for units without an LCD
display. Provide 3-in. (76 mm) of clearance for units with an LCD
display for cover removal.
Figure 3-2: Direct Mount
Dimensions are in inches (millimeters).
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 a simpler and faster network installation.
3.2 Remote mount
Procedure
1. Remove the transmitter enclosure cover.
2. Remove the LCD display (if applicable).
3. Loosen the captive screws and remove LCD display adapter plate (if
applicable). Refer to Figure 3-3.
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Figure 3-3: Exploded View of LCD Display Assembly
4. Run wiring (and conduit, if necessary) from the sensor to the
transmitter.
Note
Use an ½-in. NPT when mating conduit to the transmitter.
5. Pull the wiring through the threaded conduit entry of the
transmitter.
6. Attach the sensor wiring to the terminals as indicated on Figure
1Figure 5-1.
7. Reattach and secure LCD display adapter plate to 5 in-lb of torque (if
applicable).
8. Reattach the LCD display (if applicable).
9. Reattach and tighten the transmitter enclosure cover.
10. Remove the power module cover.
11. Connect the Green Power Module.
12. Reattach and tighten the power module cover.
13. Always ensure a proper seal by installing the electronics housing
cover(s) so that polymer contacts polymer (i.e. no O-ring visible).
Use Rosemount O-rings.
14. Provide 1.75-in. (45 mm) of clearance for units without an LCD
display. Provide 3-in. (76 mm) of clearance for units with an LCD
display for cover removal.
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Figure 3-4: Remote Mount
Dimensions are in inches (millimeters).
Note
Wireless devices should be powered up in order of proximity from
the Wireless Gateway, beginning with the closest device to the
Gateway. This will result in a simpler and faster network installation.
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4 Verify operations
Operations can be verified in four locations:
•at the device via the Local Display
•using the Field Communicator
•at the Gateway's integrated web interface
•using AMS Wireless Configurator or AMS Device Manager
4.1 Local display
During normal operation, the LCD display will display the PV value at the
configured update rate.
For Device Status screens, see LCD display screen messages on Rosemount
248 Wireless Reference Manual.
For Device Status screens, see LCD display screen messages.
4.2 Field Communicator
For HART® communication, a Rosemount 248 Wireless DD is required. To
obtain the latest DD, visit the Emerson Easy Upgrade site at:
Emerson.com/Rosemount/Device-Install-Kits
The communication status may be verified in the wireless device using the
following Fast Key sequence.
Table 4-1: Fast Key Sequence
Function Key sequence Menu items
Communications 3, 4 Comm Status, Join Mode, Available
Neighbors, Advertisement, Join
Attempts
4.3 Emerson Wireless Gateway
In the integrated web interface from the Gateway, navigate to the Explorer
→ Status page. This page shows whether the device has joined the network
and if it is communicating properly.
Note
It may take several minutes for the device to join the network. If the device
joins the network and immediately has an alarm present, it is likely due to
sensor configuration. Check the sensor wiring (see Figure 5-1) and
configuration table (Table 5-1).
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Figure 4-1: Wireless Gateway Network Settings
4.4 AMS Wireless Configurator
When the device has joined the network, it will appear in the Wireless
Configurator window as illustrated in figure below. For HART®
communication, a Rosemount 248 Wireless DD is required. To obtain the
latest DD, visit the Emerson Easy Upgrade site at:
Emerson.com/Rosemount/Device-Install-Kits
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Figure 4-2: AMS Wireless Configurator
4.5 Troubleshooting
If the device is not joining to the network, check to make sure that you have
a power supply in your device. 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 Join Key in the device must match the
Network ID and Join Key of the Gateway.
The Network ID and Join Key may be obtained from the Gateway on the
Setup → Network → Settings page on the web server (see Figure 4-1). The
Network ID and Join Key may be changed in the wireless device by using the
following Fast Key sequence.
Function Key sequence Menu items
Join Device to Network 2,1,1 Join to Network
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5 Reference information
Figure 5-1: Sensor Wiring
Thermocouple and mV 4-Wire RTD and Ω
3-Wire RTD and Ω2-Wire RTD and Ω
Figure 5-2: Sensor Connections
2-wire RTD and Ω 3-wire RTD and Ω 4-wire RTD and ΏT/C and mV
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Note
Emerson provides 4-wire sensors for all single element RTDs. Use these RTDs
in 3- or 2-wire configurations by leaving the unneeded leads disconnected
and insulated with electrical tape.
Table 5-1: WirelessHART® Fast Key Sequences
Function Key sequence Menu items
Device Information 1, 7 Identification, Revisions, Radio,
Security
Guided Setup 2, 1 Join Device to Network, Configure
Update Rate, Configure Sensor,
Calibrate Sensor
Manual Setup 2, 2 Wireless, Process Sensor, Percent of
Range, Device Temperatures,
Device Information, Other
Wireless Configuration 2, 2, 1 Network ID, Join to Network,
Broadcast Info
Sensor Calibration 3, 5, 2 Sensor Value, Sensor Status,
Current Lower Trim, Current Upper
Trim, Lower Sensor Trim, Upper
Sensor Trim, Recall Factory Trim
Figure 5-3: RTD Lead Wire Configuration per IEC 60751
Note
To configure a single element, 4-wire RTD as a 3-wire system, connect only
one white lead.
Insulate or terminate the unused white lead in a manner that prevents
shorting to the ground.
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To configure a single element, 4-wire RTD as a 2-wire system, connect
matching colored wires first and then connect the paired wires to the
terminal.
Figure 5-4: Thermocouple Lead Wire Configurations
IEC 60584 thermocouple
colors
ASTM E-230 thermocouple
colors
Type POS(+) NEG(-) POS(+) NEG(-)
J Black White White Red
K Green White Yellow Red
T Brown White Blue Red
Note
Dual thermocouple sensors are shipped with one pair of the wires shrink
wrapped together.
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6 Power module replacement
Expected power module life is 10 years at reference conditions.(1)
When power module replacement is required, remove the cover and remove
the Green Power Module. Replace the Green Power Module (part number
701PGNKF) and replace the cover. Tighten to specification and verify
operation.
Figure 6-1: Exploded Power Module View
6.1 Handling considerations
The Green Power Module with the wireless unit contains one “D” size
primary lithium-thionyl chloride battery (Green Power Module, model
number 701PGNKF). 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 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.
Note
Power modules should be stored in a clean and dry area. For maximum
power module life, storage temperature should not exceed 86 °F (30 °C).
(1) Reference conditions are 70° F (21° C), transmit rate of once per minute, and routing
data for three additional network devices.
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CAUTION
Use caution when handling the power module, it may be damaged if
dropped from heights in excess of 20 feet.
WARNING
Battery hazards remain when cells are discharged.
6.2 Environmental considerations
As with any battery, local environmental rules and regulations should be
consulted for proper management of spent batteries. If no specific
requirements exist, recycling through a qualified recycler is encouraged.
Consult the material’s safety data sheet for battery specific information.
6.3 Shipping considerations
The unit was shipped to you without the power module installed. Remove
the power module prior to shipping the unit.
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7 Product certifications
Rev 1.9
7.1 European Directive Information
A copy of the EU Declaration of Conformity can be found at the end of the
Quick Start Guide. The most recent revision of the EU Declaration of
Conformity can be found at Emerson.com/Rosemount.
7.2 Ordinary Location Certification
As standard, the transmitter has been examined and tested to determine
that the design meets the basic electrical, mechanical, and fire protection
requirements by a nationally recognized test laboratory (NRTL) as accredited
by the Federal Occupational Safety and Health Administration (OSHA).
7.3 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.
7.4 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 20 cm from all persons.
7.5 North America
The US National Electrical Code® (NEC) and the 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 the respective codes.
7.5.1 USA
I5 USA Intrinsically Safe
Certificate 70008071
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Standards FM 3600: 2011; FM 3610: 2010; FM 3611: 2004; UL 61010-1:
2012; UL 50E: 2012; ANSI/IEC 60529:2004
Markings Intrinsically Safe: CL I, DIV 1, GP A, B, C, D; CL I, DIV 2, GP A, B,
C, D; Class I, Zone 0, AEx ia IIC T4/T5 Ga; T4 (-50 °C ≤ Ta ≤ +70
°C); T5 (-50 °C ≤ Ta ≤ +40 °C); WHEN INSTALLED PER
ROSEMOUNT DWG 00249-2020; TYPE 4X, IP66/67
See Table 7-1 for entity parameters.
Special Condition for Safe Use (X)
1. Battery exchange: The battery module can be changed inside
hazardous gas-explosive locations. During battery change it must be
assured that the connections are free from dust or dirt.
7.5.2 Canada
I6 Canada Intrinsically Safe
Certificate 70008071
Standards CSA C22.2 No. 0-10; CSA C22.2 No. 94.2-07 (R2012); CSA
C22.2 No. 213-M1987 (R2013); CAN/CSA-60079-0-11; CAN/
CSA-60079-11-14; CAN/CSA C22.2 No. 60529-05; CAN/CSA-
C22.2 No. 61010-1-12
Markings Intrinsically Safe: CL I, DIV 1, GP A, B, C, D; CL I, DIV 2, GP A, B,
C, D; Ex ia IIC T4/T5 Ga; T4 (–50 °C ≤ Ta ≤ +70 °C); T5 (–50 °C ≤
Ta ≤ +40 °C); WHEN INSTALLED PER ROSEMOUNT DWG
00249-2020; TYPE 4X, IP66/67
See Table 7-1 for entity parameters.
Special Condition for Safe Use (X)
1. Battery exchange: The battery module can be changed inside
hazardous gas-explosive locations. During battery change it must be
assured that the connections are free from dust or dirt.
7.6 Europe
I1 ATEX Intrinsic Safety
Certificate Baseefa14ATEX0359X
Standards EN 60079-0: 2012; EN 60079-11: 2012
Markings II 1 G Ex ia IIC T4/T5 Ga; T4 (–60 °C ≤ Ta ≤ +70 °C); T5 (–60
°C ≤ Ta ≤ +40 °C)
See Table 7-1 for entity parameters.
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