Page 1
Quick Start Guide
00825-0100-4697, Rev WB
December 2021
Rosemount™ 848T FOUNDATION™ Fieldbus
High Density Temperature Transmitter
Page 2
Quick Start Guide December 2021
Contents
Introduction.................................................................................................................................3
Mount the transmitter..................................................................................................................7
Wire and apply power................................................................................................................ 15
Verify the tag............................................................................................................................. 22
Verify the transmitter configuration...........................................................................................23
Product certifications................................................................................................................. 24
Declaration of conformity.......................................................................................................... 36
China RoHS................................................................................................................................ 38
2 Rosemount 848T
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December 2021 Quick Start Guide
1 Introduction
The Rosemount 848T is optimized for process temperature measurement
because it can simultaneously measure eight separate and independent
temperature points with one transmitter. You can connect multiple
temperature sensor types to each transmitter. In addition, the Rosemount
848T can accept 4-20 mA inputs. The enhanced measurement capability of
the Rosemount 848T allows it to communicate these variables to any
FOUNDATION™ Fieldbus host or configuration tool.
1.1 About this guide
This guide provides basic guidelines for the Rosemount 848T Temperature
Transmitter. It does not provide instructions for detailed configuration,
diagnostics, maintenance, service, troubleshooting. Refer to the Rosemount
848T Reference Manual for more instruction. The manual and this guide are
also available electronically on Emerson.com/Rosemount.
1.2 Hazard messages
This document uses the following criteria for hazard messages based on
ANSI standards Z535.6-2011 (R2017).
DANGER
Serious injury or death will occur if a hazardous situation is not avoided.
WARNING
Serious injury or death could occur if a hazardous situation is not avoided.
CAUTION
Minor or moderate injury will or could occur if a hazardous situation is not
avoided.
NOTICE
Data loss, property damage, hardware damage, or software damage can
occur if a situation is not avoided. There is no credible risk of physical injury.
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Quick Start Guide December 2021
Physical access
NOTICE
Unauthorized personnel can potentially cause significant damage and/or
misconfiguration of end users' equipment. Protect against all intentional or
unintentional unauthorized use.
Physical security is an important part of any security program and
fundamental to protecting your system. Restrict physical access to protect
users' assets. This is true for all systems used within the facility.
1.3 Safety messages
Read this manual before working with the product. For personal and system
safety, and for optimum product performance, ensure you thoroughly
understand the contents before installing, using, or maintaining this
product.
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 Field Communicator in an explosive atmosphere, make
sure the instruments in the loop are installed in accordance with intrinsically
safe or non-incendive field wiring practices.
WARNING
Failure to follow these installation guidelines could result in death or
serious injury.
Ensure the transmitter is installed by qualified personnel and in accordance
with applicable code of practice.
WARNING
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.
4 Rosemount 848T
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December 2021 Quick Start Guide
WARNING
Electrical shock could cause death or serious injury.
If the sensor is installed in a high-voltage environment and a fault or
installation error occurs, high voltage may be present on transmitter leads
and terminals.
Use extreme caution when making contact with the leads and terminals.
CAUTION
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 7.9 in. (20 cm) from all persons.
NOTICE
Battery hazards remain when cells are discharged.
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.
Shipping considerations for wireless products.
• The unit was shipped to you without the power module installed.
Remove the power module prior to any re-shipping.
• Each power module contains two “C” size primary lithium batteries.
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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Quick Start Guide December 2021
1.4 Product recycling/disposal
Recycling of equipment and packaging should be taken into consideration
and disposed of in accordance with local and national legislation/
regulations.
6 Rosemount 848T
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December 2021 Quick Start Guide
2 Mount the transmitter
2.1 Mount to a DIN rail without an enclosure
To mount the transmitter to a DIN rail without an enclosure, follow these
steps:
Procedure
1. Pull up the DIN rail mounting clip located on the top back side of the
transmitter.
2. Hinge the DIN rail into the slots on the bottom of the transmitter.
3. Tilt the transmitter and place onto the DIN rail. Release the mounting
clip. The transmitter should be securely fastened to the DIN rail.
Figure 2-1: Mount the transmitter to a DIN rail
A. Rosemount 848T without installed enclosure
B. DIN rail mounting clip
C. DIN rail
2.2
Quick Start Guide 7
Mount to a panel from an aluminum junction box
Prerequisites
Use four 1/4-20 x 1.25-in. screws.
Procedure
Mount the transmitter to a panel from inside the junction box using one of
the following dimension drawings.
Page 8
10.21
[259]
A
1.70
[43]
B
6.70
[170]
C
D
3.67
[93]
E
.80
[20]
2.30
[58]
2.27
[58]
1.33
[34]
1.88
[48]
3.98
[101]
8.42
[214]
6.00
[152]
Quick Start Guide December 2021
Figure 2-2: Aluminum junction box with cable glands (option code JA4)
A. Nameplate
B. Removable wiring connector
C. Security switch
D. Simulation switch
E. External ground screw (optional)
Dimensions are in inches (millimeters).
8 Rosemount 848T
Page 9
A
10.21
[259]
1.70
[43]
B
6.70
[170]
C
D
.80
[20]
2.30
[58]
3.21
[81]
1.33
[34]
1.88
[48]
3.97
[101]
E
7.14
[181]
6.00
[152]
December 2021 Quick Start Guide
Figure 2-3: Aluminum junction box with plugged holes (option code
JA5)
A. Nameplate
B. Removable wiring connection
C. Security switch
D. Simulation switch
E. External ground screw (optional)
Dimensions are in inches (millimeters).
2.3
Mount to a panel from a stainless steel junction box
Prerequisites
Use two 1/4-20 x 1/2-in. screws.
Procedure
Mount the transmitter to a panel from inside the junction box using one of
the following dimension drawings.
Quick Start Guide 9
Page 10
9.91 (231)
7.7 (196)
C
1.8 (46)
1.1 (28)
1.73 (44)
2.4 (62)
1.2 (30)
1.8 (47)
4.0 (102)
9.14 (232.2)
7.72 (196)
6.61 (168)
A B
D E
Quick Start Guide December 2021
Figure 2-4: Stainless steel junction box with cable glands (option code
JS2)
A. Top view
B. 3-D view
C. Ground screw
D. Front view
E. Side view
Dimensions are in inches (millimeters).
10 Rosemount 848T
Page 11
9.1 (231)
7.7 (196)
C
A
4.0 (102)
B
1.4 (35)
1.1 (27)
2.8 (70)
4.0 (102)
1.8 (4.7)
2.4 (62)
1.6 (42)
F
D
1.2 (30)
E
December 2021 Quick Start Guide
Figure 2-5: Stainless steel junction box with a conduit entry (option
code JS3)
A. Top view
B. 3-D view
C. Ground screw
D. Front view
E. Side view
F. Five plugged 0.86 in (21.8 mm) diameter holes suitable for installing ½-
in. NPT fittings
Dimensions are in inches (millimeters).
2.4
Mount to a 2 in (51 mm) pipe stand
Procedure
Use the optional mounting bracket (option code B6) to mount the
transmitter to a 2 in (51 mm) pipe stand when using a junction box.
Quick Start Guide 11
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․
‥
A B
5.08
[129]
7.55
[193]
Quick Start Guide December 2021
Figure 2-6: Mount an aluminum junction box
A. Front view
B. Side view
Dimensions are in inches (millimeters)
12 Rosemount 848T
Page 13
4.7 (119)
7.5 (190)
C
A B
December 2021 Quick Start Guide
Figure 2-7: Mount a stainless steel junction box
A. Front view
B. Side view
C. Fully assembled
Dimensions are in inches (millimeters)
Quick Start Guide 13
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Quick Start Guide December 2021
Figure 2-8: Mount aluminum on a vertical pipe
Figure 2-9: Mount stainless steel on vertical pipe
14 Rosemount 848T
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December 2021 Quick Start Guide
3 Wire and apply power
3.1 Using cable glands
Procedure
1. Remove the junction box cover by unscrewing the cover screws.
2. Run the sensor and power/signal wires through the appropriate cable
glands (see Figure 3-1).
3. Install the sensor wires into the correct screw terminals (follow the
label on the electronics module).
4. Install the power/signal wires onto the correct screw terminals.
Power is polarity insensitive, allowing the user to connect positive (+)
or negative (–) to either fieldbus wiring terminal labeled “Bus”.
5. Replace the enclosure cover and securely tighten all cover screws.
Quick Start Guide 15
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+,-.
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Quick Start Guide December 2021
Figure 3-1: Installing the transmitter with cable glands
A. Enclosure cover screws (2)
B. Cable glands (9)
C. Sensor 1
D. Sensor 3
E. Sensor 5
F. Sensor 7
G. Power/signal
H. Sensor 2
I. Sensor 4
J. Sensor 6
K. Sensor 8
16 Rosemount 848T
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1 1 1 12 2 2 23 3 3 3
December 2021 Quick Start Guide
3.2 Sensor wiring and power supply
• Compatible with eight independently configurable channels including
combinations of 2- and 3-wire RTDs, thermocouples, mV, ohm, and mA
sensors.
• All sensor and power terminals are rated to 42.4 Vdc.
• FOUNDATION Fieldbus network powered with a terminal voltage of 9.0–
32.0 Vdc and 22 mA maximum current draw.
• For best network performance twisted, shielded pair cabling should be
used. Proper gage wire should be selected to maintain the 9.0 Vdc
minimum.
Figure 3-2: Sensor Wiring Diagrams
2-wire RTD and
Ohms
(1) Emerson provides 4-wire sensors for all single-element RTDs. Use these RTDs in
3-wire configurations by clipping the fourth lead or leaving it disconnected and
insulated with electrical tape.
(2) The transmitter must be configured for a 3-wire RTD in order to recognize an
RTD with a compensation loop.
3-wire RTD and
Ohms
(1)
Thermocouples/
Ohms and
millivolts
2-Wire RTD with
compensation
(2)
loop
The wiring of 3-wire RTDs for this unit is different than some earlier
Rosemount 848T models. Pay careful attention to the wiring diagram on the
label, especially if this unit is replacing an older unit.
Quick Start Guide 17
Page 18
A
C
B
Quick Start Guide December 2021
3.3 Wiring analog inputs
Figure 3-3: Rosemount 848T Analog Input Wiring Diagram
A. Analog input connectors
B. Analog transmitters
C. Power supply
3.4
18 Rosemount 848T
Typical configuration for FOUNDATION Fieldbus networking
Note
Each segment in a FOUNDATION Fieldbus trunk must be terminated at both
ends.
Page 19
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$
&
)
)
*
+
'
(
December 2021 Quick Start Guide
A. Integrated power conditioner and filter
B. 6234 ft. (1900 m) max (depending upon cable characteristics)
C. Terminators (trunk)
D. Power supply
E. FOUNDATION Fieldbus host or configuration tool
F. Spurs
G. Signal wiring
H. Devices 1-16 (intrinsically safe installations may allow fewer devices per
I.S. barrier)
3.4.1 Ground the transmitter
Proper ground is crucial to reliable temperature readings.
3.4.2 Ungrounded thermocouple, mV, and RTD/Ohm inputs Option 1
Procedure
1. Connect FOUNDATION Fieldbus signal wiring shield to the sensor wiring
shield(s).
2. Ensure the shields are tied together and electrically isolated from the
transmitter enclosure.
3. Only ground the shield at the power supply end.
4. Ensure that the sensor shield(s) is electrically isolated from the
Quick Start Guide 19
surrounding grounded fixtures.
Page 20
A
B
C
D
A
B
C
D
Quick Start Guide December 2021
A. Sensor wires
B. Rosemount 848T
C. Power supply
D. Shield ground point
Option 2
Procedure
1. Connect sensor wiring shield(s) to the transmitter enclosure (only if
the enclosure is grounded).
2. Ensure the sensor shield(s) is electrically isolated from surrounding
fixtures that may be grounded.
3. Ground FOUNDATION Fieldbus signal wiring shield at the power supply
end.
A. Sensor wires
B. Rosemount™ 848T
C. Power supply
D. Shield ground point
3.4.3 Grounded thermocouple inputs
Procedure
1. Ground sensor wiring shield(s) at the sensor.
2. Ensure the sensor wiring and FOUNDATION Fieldbus signal wiring
shields are electrically isolated from the transmitter enclosure.
3. Do not connect the FOUNDATION Fieldbus signal wiring shield to the
sensor wiring shield(s).
20 Rosemount 848T
Page 21
A
B
C
D
A
C D
F
G
B
E
December 2021 Quick Start Guide
4. Ground FOUNDATION Fieldbus signal wiring shield at the power supply
end.
A. Sensor wires
B. Rosemount 848T
C. Power supply
D. Shield ground point
3.5 Analog device inputs
Procedure
1. Ground analog signal wire at the power supply of the analog devices.
2. Ensure the analog signal wire and the FOUNDATION Fieldbus signal wire
shields are electrically isolated from the transmitter enclosure.
3. Do not connect the analog signal wire shield to the FOUNDATION
Fieldbus signal wire shield.
A. Analog device power supply
B. 4–20 mA loop
C. Analog device
D. Rosemount 848T
E. FOUNDATION Fieldbus
F. Power supply
G. Shield ground points
3.5.1 Transmitter enclosure (optional)
Ground in accordance with local electrical requirements.
Quick Start Guide 21
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Quick Start Guide December 2021
4 Verify the tag
The Rosemount 848T has a removable commissioning
tag that contains both the Device ID (the unique code
that identifies a particular device in the absence of a
device tag) and a space to record the device tag (the
operational identification for the device as defined by
the Piping and Instrumentation Diagram [P&ID]).
When commissioning more than one device on a
FOUNDATION Fieldbus segment, it can be difficult to
identify which device is at a particular location. The
removable tag aids in this process by linking the
Device ID to physical location. The installer should
note the physical location of the transmitter on both
the upper and lower location of the commissioning
tag. The bottom portion should be torn off for each
device on the segment and used for commissioning
the segment in the control system.
22 Rosemount 848T
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December 2021 Quick Start Guide
5 Verify the transmitter configuration
Each FOUNDATION Fieldbus host or configuration tool has a different way of
displaying and performing configurations. Some use Device Descriptions
(DD) or DD wizards for configuration and to display data consistently across
platforms. There is no requirement that a host or configuration tool support
these features.
The following is the minimum configuration requirement for a temperature
measurement. This guide is designed for systems not using DD wizards. For
a complete list of parameters and configuration information refer to the
Rosemount 848T Reference Manual.
Quick Start Guide 23
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Quick Start Guide December 2021
6 Product certifications
Rev 3.13
6.1 European Directive Information
A copy of the EC Declaration of Conformity can be found at the end of the
Quick Start Guide. The most recent revision of the EC Declaration of
Conformity can be found at Emerson.com/Rosemount.
6.2 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 FM Approvals, a nationally recognized test laboratory
(NRTL) as accredited by the Federal Occupational Safety and Health
Administration (OSHA).
6.3 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.
6.4 USA
6.4.1 I5 USA Intrinsically Safe and Nonincendive
Certificate
Standards
Markings
Note
Transmitters marked with Nonincendive CL I, DV 2 can be installed in
Division 2 locations using general Division 2 wiring methods or
Nonincendive Field Wiring (NIFW). See Drawing 00848-4404.
6.4.2 IE USA FISCO
Certificate
24 Rosemount 848T
3011568
FM Class 3600:1998, FM Class 3610:2010, FM Class
3611:2004, FM Class 3810:2005, ANSI/ISA 60079-0:2009,
ANSI/ISA 60079-11:2009, NEMA 250:1991, IEC 60529:2011
IS CL I, DIV 1, GP A, B, C, D; T4(–50 °C ≤ Ta ≤ +60 °C); NI CL I,
DIV 2, GP A, B, C, D; T4A(–50 °C ≤ Ta ≤ +85 °C); T5(–50 °C ≤ T
≤ +70 °C) when installed per Rosemount drawing 00848-4404.
3011568
a
Page 25
December 2021 Quick Start Guide
Standards
FM Class 3600:1998, FM Class 3610:2010, FM Class
3611:2004, FM Class 3810:2005, ANSI/ISA 60079-0:2009,
ANSI/ISA 60079-11:2009, NEMA 250:1991, IEC 60529:2011
Markings
IS CL I, DIV 1, GP A, B, C, D; T4(–50 °C ≤ Ta ≤ +60 °C); NI CL I,
DIV 2, GP A, B, C, D; T4A(–50 °C ≤ Ta ≤ +85 °C); T5(–50 °C ≤ T
≤ +70 °C) when installed per Rosemount drawing 00848-4404.
6.4.3 N5 USA Nonincendive and Dust-Ignitionproof
Certificate
Standards
Markings
3011568
FM Class 3600:1998, FM Class 3611:2004, FM Class
3810:2005, ANSI/ISA 60079-0:2009, NEMA 250:1991, IEC
60529:2011
NI CL I, DIV 2, GP A, B, C, D; DIP CL II/III, DIV 1, GP E, F, G; T4A(–
50 °C ≤ Ta ≤ +85 °C); T5(–50 °C ≤ Ta ≤ +70 °C) when installed
per Rosemount drawing 00848-4404; Type 4X
6.4.4 NK USA Nonincendive
Certificate
Standards
Markings
3011568
FM Class 3600:1998, FM Class 3611:2004, FM Class
3810:2005, ANSI/ISA 60079-0:2009, NEMA 250:1991, IEC
60529:2001
NI CL I, DIV 2, GP A, B, C, D; T4A(–50 °C ≤ Ta ≤ +85 °C); T5(–50
°C ≤ Ta ≤ +70 °C) when installed per Rosemount drawing
00848-4404
a
Note
Only the N5 and NK are valid with the S002 option.
Table 6-1: MAI Block Parameters
Fieldbus (input) FISCO (input) Nonincendive
V
= 30 V V
MAX
I
= 300 mA I
MAX
Pi = 1.3 W Pi = 5.32 W Li = 0 PO = 15 mW
Ci = 2.1 nF Ci = 2.1 nF N/A CA = 1.2 μF
Li = 0 Li = 0 N/A LA = 1 H
Quick Start Guide 25
= 17.5 V
MAX
= 380 mA Ci = 2.1 nF ISC = 4.8 mA
MAX
(input)
= 42.4 VOC = 12.5 V
MAX
Sensor field
terminal (output)
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Quick Start Guide December 2021
6.5 Canada
6.5.1 E6 Canada Explosionproof, Dust-Ignitionproof, Division 2 (JX3 Enclosure Required)
Certificate
Standards
Markings
1261865
CAN/CSA C22.2 No. 0-M91 (R2001), CSA Std. C22.2 No.
25.1966, CSA Std. C22.2 No. 30-M1986, CAN/CSA C22.2 No.
94-M91, CSA Std. C22.2 No. 142-M1987, CSA Std. C22.2 No.
213-M1987, CSA Std. C22.2 No. 60529:05
Explosionproof for Class I, Division 1, Groups B, C, and D; T4(–
40 °C ≤ Ta ≤ +40 °C) when installed per Rosemount drawing
00848-1041; Dust-Ignitionproof for Class II, Division 1, Groups
E, F, and G; Class III; Class I, Division 2, Groups A, B, C, and D;
T3C(–50 °C ≤ Ta ≤ +60 °C) when installed per Rosemount
drawing 00848-4405; Conduit Seal Required
6.5.2 I6 Canada Intrinsically Safe and Division 2
Certificate
Standards
Markings
1261865
CAN/CSA C22.2 No. 0-M91 (R2001), CAN/CSA C22.2 No. 94M91, CSA Std. C22.2 No. 142-M1987, CSA Std. C22.2 No.
157-92, CSA Std. C22.2 No. 213-M1987, CSA Std. C22.2 No.
60529:05
Intrinsically Safe for Class I, Division 1, Groups A, B, C, and D;
T3C(–50 °C ≤ Ta ≤ +60 °C) when installed per Rosemount
drawing 00848-4405; Class I, Division 2, Groups A, B, C, D;
T3C(–50 °C ≤ Ta ≤ +60 °C) when installed per Rosemount
drawing 00848-4405
6.5.3 IF Canada FISCO
Certificate
Standards
Markings
26 Rosemount 848T
1261865
CAN/CSA C22.2 No. 0-M91 (R2001), CAN/CSA C22.2 No. 94M91, CSA Std. C22.2 No. 142-M1987, CSA Std. C22.2 No.
157-92, CSA Std. C22.2 No. 213-M1987, CSA Std. C22.2 No.
60529:05
Intrinsically Safe for Class I, Division 1, Groups A, B, C, and D;
T3C(–50 °C ≤ Ta ≤ +60 °C) when installed per Rosemount
drawing 00848-4405; Class I, Division 2, Groups A, B, C, D;
T3C(–50 °C ≤ Ta ≤ +60 °C) when installed per Rosemount
drawing 00848-4405
Page 27
December 2021 Quick Start Guide
6.5.4 N6 Canada Division 2 and Dust-Ignitionproof (enclosure required)
Certificate
Standards
1261865
CAN/CSA C22.2 No. 0-M91 (R2001), CSA Std. C22.2 No. 30M1986, CAN/CSA C22.2 No. 94-M91, CSA Std. C22.2 No. 142M1987, CSA Std. C22.2 No. 213-M1987, CSA Std. C22.2 No.
60529:05
Markings
Class I, Division 2, Groups A, B, C, and D; T3C(–50 °C ≤ Ta ≤ +60
°C) when installed per Rosemount drawing 00848-4405; DustIgnitionproof for Class II, Division 1, Groups E, F, and G; Class
III; Conduit Seal Required
6.6 Europe
6.6.1 I1 ATEX Intrinsic Safety
Certificate
Standards
Markings
Special Conditions for Safe Use (X):
1. The equipment must be installed in an enclosure that provides a
Baseefa09ATEX0093X
EN IEC 60079-0:2018, EN 60079-11:2012
II 1 G Ex ia IIC T4 Ga (–50 °C ≤ Ta ≤ +60 °C) when installed
per drawing 00848-4406
degree of protection of at least IP20. Non-metallic enclosures must
be suitable to prevent electrostatic hazards and light alloy or
zirconium enclosures must be protected from impact and friction
when installed.
2. The equipment is not capable of withstanding the 500 V insulation
test required by EN 60079-11:2011, clause 6.3.13. This must be
taken into account when installing the equipment.
Fieldbus (input)
Ui = 30 V UO = 12.5 V
Ii = 300 mA IO = 4.8 mA
Pi = 1.3 W PO = 15 mW
Ci = 2.1 nF CO = 1.2 μF
Li = 0 LO = 1 H
Quick Start Guide 27
Sensor field terminal (output)
Page 28
Quick Start Guide December 2021
6.6.2 IA ATEX FISCO Intrinsic Safety
Certificate
Standards
Markings
Baseefa09ATEX0093X
EN IEC 60079-0:2018, EN 60079-11:2012
II 1 G Ex ia IIC T4 Ga (–50 °C ≤ Ta ≤ +60 °C) when installed
per drawing 00848-4406
Special Conditions for Safe Use (X):
1. The equipment must be installed in an enclosure that provides a
degree of protection of at least IP20. Non-metallic enclosures must
be suitable to prevent electrostatic hazards and light alloy or
zirconium enclosures must be protected from impact and friction
when installed.
2. The equipment is not capable of withstanding the 500 V insulation
test required by EN 60079-11:2011, clause 6.3.13. This must be
taken into account when installing the equipment.
FISCO (input) Sensor field terminal (output)
Ui = 17.5 V UO = 12.5 V
Ii = 380 mA IO = 4.8 mA
Pi = 5.32 W PO = 15 mW
Ci = 2.1 nF CO = 1.2 μF
Li = 0 LO = 1 H
6.6.3 N1 ATEX Zone 2 (with enclosure)
Certificate
Standards
Markings
Special Conditions for Safe Use (X):
1. The equipment must only be installed in an area of pollution degree
2. Provision must be made, external to the equipment, to ensure the
28 Rosemount 848T
Baseefa09ATEX0095X
EN IEC 60079-0:2018, EN 60079-7:2015 + A1:2018, EN
60079-15:2010
II 3G Ex nA IIC T5 Gc (-40 °C ≤ Ta ≤ +65 °C), Ex ec IIC T5 Gc
(-40 °C ≤ Ta ≤ +65 °C)
2 or better, as defined in IEC 60664-1.
rated voltage of the equipment supply is not exceeded by transient
disturbances of more than 40 percent.
Page 29
December 2021 Quick Start Guide
3. The electrical circuit is connected directly to earth; this must be
taken into account when installing the apparatus.
6.6.4 NC ATEX Zone 2 Component (without enclosure)
6.7
Certificate
Standards
Markings
Schedule of Limitations (U):
1. The equipment must only be installed in an area of pollution degree
2. Provision must be made, external to the component, to ensure the
3. The electrical circuit is connected directly to earth; this must be
International
Baseefa09ATEX0094U
EN IEC 60079-0:2018, EN 60079-7:2015 + A1:2018, EN
60079-15:2010
II 3G Ex nA IIC T4 Gc (-50 °C ≤ Ta ≤ +85 °C) or Ex nA IIC T5
Gc (-50 °C ≤ Ta ≤ +70 °C), Ex ec IIC T4 Gc (-50 °C ≤ Ta ≤ +85 °C)
or Ex ec IIC T5 Gc (-50 °C ≤ Ta ≤ +70 °C)
2 or better, as defined in IEC 60664-1, and in an enclosure that
provides a degree of protection of at least IP54 in accordance with EN
60079-0.
rated voltage of the component supply is not exceeded by transient
disturbances of more than 40 percent.
taken into account when installing the apparatus.
6.7.1 I7 IECEx Intrinsic Safety
Certificate
Standards
Markings
IECEx BAS 09.0030X
IEC 60079-0:2017, IEC 60079-11:2011
Ex ia IIC T4 Ga (–50 °C ≤ Ta ≤ +60 °C)
Special Conditions for Safe Use (X):
1. The apparatus must be installed in an enclosure that provides a
degree of protection of at least IP20. Non-metallic enclosures must
be suitable to prevent electrostatic hazards and light alloy or
zirconium enclosures must be protected from impact and friction
when installed.
2. The apparatus is not capable of withstanding the 500 V insulation
test required by IEC 60079-11:2011, clause 6.3.13. This must be
taken into account when installing the appartus.
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Quick Start Guide December 2021
6.7.2 IG IECEx FISCO Intrinsic Safety
Certificate
Standards
Markings
IECEx BAS 09.0030X
IEC 60079-0:2017, IEC 60079-11:2011
Ex ia IIC T4 Ga (-50 °C ≤ Ta ≤ +60 °C)
Special Conditions for Safe Use (X):
1. The equipment must be installed in an enclosure that provides a
degree of protection of at least IP20. Non-metallic enclosures must
be suitable to prevent electrostatic hazards and light alloy or
zirconium enclosures must be protected from impact and friction
when installed.
2. The equipment is not capable of withstanding the 500 V insulation
test required by EN 60079-11:2012, clause 6.3.13. This must be
taken into account when installing the equipment.
FISCO (input) Sensor field terminal (output)
Ui = 17.5 V UO = 12.5 V
Ii = 380 mA IO = 4.8 mA
Pi = 5.32 W PO = 15 mW
Ci = 2.1 nF CO = 1.2 μF
Li = 0 LO = 1 H
6.7.3 N7 IECEx Type n (with enclosure)
Certificate:
Standards:
Markings:
IECEx BAS 09.0032X
IEC 60079-0:2017, IEC 60079-7:2017, IEC 60079-15:2010
Ex nA IIC T5 Gc (-40 °C ≤ Ta ≤ +65 °C), Ex ec IIC T5 Gc (-40 °C ≤
Ta ≤ +65 °C)
Special Conditions for Safe Use (X):
1. The equipment must only be installed and used in an area of
pollution degree 2 or better, as defined in IEC 60664-1.
2. Provision must be made, external to the apparatus, to ensure the
rated voltage of the apparatus supply is not exceeded by transient
disturbances of more than 40 percent.
3. The electrical circuit is connected directly to earth. This must be
taken into account when installing the apparatus.
30 Rosemount 848T
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December 2021 Quick Start Guide
6.7.4 NJ IECEx Type n (without enclosure)
Certificate:
Standards:
Markings:
IECEx BAS 09.0031U
IEC 60079-0:2017, IEC 60079-7:2017, IEC 60079-15:2010
Ex nA IIC T4 Gc(-50 °C ≤ Ta ≤ +85 °C), Ex nA IIC T5 Gc (-50 °C ≤
Ta ≤ +70 °C), Ex ec IIC T4 Gc(-50 °C ≤ Ta ≤ +85 °C), Ex ec IIC T5
Gc (-50 °C ≤ Ta ≤ +70 °C)
Schedule of Limitations (U):
1. The component must be only installed and used in an area of
pollution degree 2 or better, as defined in IEC 60664-1, and in an
enclosure that provides a degree of protection of at least IP54 in
accordance with IEC 60079-0
2. Provision must be made, external to the component, to ensure the
rated voltage of the component supply is not exceeded by transient
disturbances of more than 40 percent.
3. The electrical circuit is connected directly to earth; this must be
taken into account when installing the apparatus.
6.8 Brazil
6.8.1 I2 Brazil Intrinsic Safety
Certificate
Standards
Markings
UL-BR 16.0086X
ABNT NBR IEC 60079-0:2008 + Errata 1:2011 ABNT NBR IEC
60079-11:2009
Ex ia IIC T4(–50 °C ≤ Ta ≤ +60 °C)
Special Conditions for Safe Use (X):
1. The apparatus must be installed in an enclosure that provides a
degree of protection of at least IP20. Non-metallic enclosures must
be suitable to prevent electrostatic hazards (see manufacturer's
instructions manual) and light alloy or zirconium enclosures must be
protected from impact and friction when installed.
2. The apparatus is not capable of withstanding the 500 V isolation test
required by ABNT NBR IEC 60079-11. This must be taken into
account when installing the apparatus --- see manufacturer's
instructions manual.
Fieldbus (input)
Ui = 30 V UO = 12.5 V
Ii = 300 mA IO = 4.8 mA
Quick Start Guide 31
Sensor field terminal (output)
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Quick Start Guide December 2021
Fieldbus (input) Sensor field terminal (output)
Pi = 1.3 W PO = 15 mW
Ci = 2.1 nF CO = 1.2 μF
Li = 0 LO = 1 H
6.8.2 IB Brazil Intrinsic Safety
Certificate
Standards
UL-BR 16.0086X
ABNT NBR IEC 60079-0:2008 + Errata 1:2011, ABNT NBR IEC
60079-11:2009
Markings
Ex ia IIC T4(–50 °C ≤ Ta ≤ +60 °C)
Special Conditions for Safe Use (X):
1. The apparatus must be installed in an enclosure that provides a
degree of protection of at least IP20. Non-metallic enclosures must
be suitable to prevent electrostatic hazards (see manufacturer's
instructions manual) and light alloy or zirconium enclosures must be
protected from impact and friction when installed.
2. The apparatus is not capable of withstanding the 500 V isolation test
required by ABNT NBR IEC 60079-11. This must be taken into
account when installing the apparatus --- see manufacturer's
instruction manual.
FISCO (input)
Ui = 17.5 V UO = 12.5 V
Ii = 380 mA IO = 4.8 mA
Pi = 5.32 W PO = 15 mW
Ci = 2.1 nF CO = 1.2 μF
Li = 0 LO = 1 H
Sensor field terminal (output)
6.9 China
6.9.1 I3 China Intrinsic Safety
Certificate
Standards
Markings
32 Rosemount 848T
GYJ21.1125X
GB3836.1-2010, GB3836.4-2010, GB3836.20-2010
Ex ia IIC T4/T5 Ga
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December 2021 Quick Start Guide
6.9.2 N3 China Type n
Certificate
Standards
Markings
GYJ21.3428U
GB3836.1-2010, GB3836.8-2014
Ex nA IIC T4/T5 Gc
6.10 Japan
6.10.1 I4 Japan FISCO Intrinsic Safety (ia)
Certificate
Markings
6.10.2 Japan Wi-HART Intrinsic Safety (ia)
Certificate
Markings
6.10.3 H4 Japan FISCO Intrinsic Safety (ib)
Certificate
Markings
6.11 Korea
6.11.1 IP Korea Intrinsic Safety
Certificate
Markings
20-KA4BO-0921X
Ex ia IIC T4 (–50 °C ≤ Ta ≤ +60 °C)
TC19713
ia IIC T4
TC19154
ia IIC T4
TC20737
ia IIC T4
6.12 EAC - Belarus, Kazakhstan, Russia
6.12.1 IM Technical Regulation Customs Union (EAC) Intrinsic Safety
Markings
Special Condition for Safe Use (X):
See certificate for special conditions.
6.12.2 IN Technical Regulation Customs Union (EAC) FISCO
Markings:
Quick Start Guide 33
[FOUNDATION Fieldbus]: 0Ex ia IIC T4 Ga X, T4(–50 °C ≤ Ta ≤ +60
°C)
See certificate for entity parameters.
[FISCO]: 0Ex ia IIC T4 Ga X, T4(-50 °≤ Ta ≤ +60 °C)
See certificate for entity parameters.
Page 34
Quick Start Guide December 2021
Special Condition for Safe Use (X):
See certificate for special conditions.
6.13 Combinations
KG
Combination of I1/IA, I5/IE, I6/IF, and I7/IG
6.14 Conduit Plugs and Adapters
ATEX Flameproof and Increased Safety
Certificate
Standards
Markings:
Special Conditions for Safe Use (X):
1. When the thread adapter or blanking plug is used with an enclosure
2. The blanking plug shall not be used with an adapter.
3. Blanking Plug and Threaded Adapter shall be either NPT or Metric
IECEx Flameproof and Increased Safety
Certificate
Standards
Markings
Special Conditions for Safe Use (X):
1. When the thread adapter or blanking plug is used with an enclosure
FM13ATEX0076X
EN 60079-0:2012, EN 60079-1:2007, IEC 60079-7:2007
2 G Ex de IIC Gb
in type of protection increased safety “e” the entry thread shall be
suitably sealed in order to maintain the ingress protection rating (IP)
of the enclosure.
thread forms. G½ and PG 13.5 thread forms are only acceptable for
existing (legacy) equipment installations.
IECEx FMG 13.0032X
IEC 60079-0:2011, IEC 60079-1:2007, IEC
60079-7:2006-2007
Ex de IIC Gb
in type of protection increased safety “e” the entry thread shall be
suitably sealed in order to maintain the ingress protection rating (IP)
of the enclosure.
2. The blanking plug shall not be used with an adapter.
3. Blanking Plug and Threaded Adapter shall be either NPT or Metric
thread forms. G½ and PG 13.5 thread forms are only acceptable for
existing (legacy) equipment installations.
34 Rosemount 848T
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December 2021 Quick Start Guide
Table 6-2: Conduit Plug Thread Sizes
Thread Identification mark
M20 x 1.5 M20
½–14 NPT ½ NPT
G½ G½
Table 6-3: Thread Adapter Thread Sizes
Male thread Identification mark
M20 x 1.5–6H M20
½–14 NPT ½–14 NPT
¾–14 NPT ¾–14 NPT
Female thread Identification mark
M20 x 1.5–6H M20
½–14 NPT ½–14 NPT
PG 13.5 PG 13.5
Quick Start Guide 35
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Quick Start Guide December 2021
7 Declaration of conformity
36 Rosemount 848T
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December 2021 Quick Start Guide
Quick Start Guide 37
Page 38
ᴹ
China RoHS
㇑᧗⢙䍘䎵䗷ᴰབྷ⎃ᓖ䲀٬Ⲵ䜘Ԧරࡇ㺘
848T
List of 848T Parts with China RoHS Concentration above MCVs
䜘Ԧ〠
Part Name
ᴹᇣ⢙䍘
/ Hazardous Substances
䫵
Lead
(Pb)
⊎
Mercury
(Hg)
䭹
Cadmium
(Cd)
ޝԧ䬜
Hexavalent
Chromium
(Cr +6)
ཊⓤ㚄㤟
Polybrominated
biphenyls
(PBB)
ཊⓤ㚄㤟䟊
Polybrominated
diphenyl ethers
(PBDE)
⭥ᆀ㓴Ԧ
Electronics
Assembly
X O O O O O
༣փ㓴Ԧ
Housing
Assembly
O O O X O O
Րᝏಘ㓴Ԧ
Sensor
Assembly
X O O O O O
ᵜ㺘Ṭ㌫ᦞ
SJ/T11364
Ⲵ㿴ᇊ㘼ࡦ
This table is proposed in accordance with the provision of SJ/T11364.
O:
Ѫ䈕䜘ԦⲴᡰᴹ൷䍘ᶀᯉѝ䈕ᴹᇣ⢙䍘Ⲵ䟿൷վҾ
GB/T 26572
ᡰ㿴ᇊⲴ䲀䟿㾱≲
O: Indicate that said hazardous substance in all of the homogeneous materials for this part is below the limit
requirement of GB/T 26572.
X:
Ѫ൘䈕䜘Ԧᡰ֯⭘Ⲵᡰᴹ൷䍘ᶀᯉ䟼ˈ㠣ቁᴹа㊫൷䍘ᶀᯉѝ䈕ᴹᇣ⢙䍘Ⲵ䟿儈Ҿ
GB/T 26572
ᡰ㿴ᇊⲴ䲀䟿㾱
≲
X: Indicate that said hazardous substance contained in at least one of the homogeneous materials used for this part is
above the limit requirement of GB/T 26572.
䜘Ԧ〠
Part Name
㓴㻵༷Ԧ䈤᰾
Spare Parts Descriptions for Assemblies
⭥ᆀ㓴Ԧ
Electronics
Assembly
ㄟᆀඇ㓴ԦTerminal Block Assemblies
༣փ㓴Ԧ
Housing
Assembly
⭥ᆀཆ༣Electrical Housing
Quick Start Guide December 2021
8 China RoHS
38 Rosemount 848T
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December 2021 Quick Start Guide
Quick Start Guide 39
Page 40
* 00825-0100-4697*
00825-0100-4697, Rev. WB
Quick Start Guide
December 2021
For more information:
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available upon request. The Emerson logo
is a trademark and service mark of
Emerson Electric Co. Rosemount is a mark
of one of the Emerson family of
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