User manual | Rosemount 848T Multi-Input Temperature Transmitter Family

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Product Data Sheet
Rosemount 848T Family
00813-0100-4697, Rev GA
Catalog 2008 - 2009
Rosemount 848T Multi-Input Temperature
Transmitter Family
• Provides installation and operational savings
for temperature applications
• Inputs are independently configurable and
accept RTD, thermocouple, ohm, mV, and
4–20 mA
• Mounts anywhere - field hardened,
intrinsically safe, and low power
• Interfaces to any control architectures using
3420 or 1420 gateway devices
COMING SOON
Rosemount 848T Wireless
Temperature Transmitter
The Rosemount 848T Wireless is easy to use,
allowing leverage of existing practices, training, and
maintenance procedures without adding wiring costs.
Consult factory for availability.
Contents
Overview: The First Choice in Temperature Monitoring. . . . . . . . . . . . . . . . . . page Temperature-2
The Rosemount 848T Eight Input Temperature Transmitter . . . . . . . . . . . . . . page Temperature-3
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page Temperature-4
Product Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page Temperature-8
Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page Temperature-11
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page Temperature-14
The Rosemount 848T Wireless Temperature Transmitter . . . . . . . . . . . . . . . page Temperature-16
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page Temperature-17
www.rosemount.com
Product Data Sheet
00813-0100-4697, Rev GA
Catalog 2008 - 2009
Rosemount 848T Family
Overview: The First Choice in Temperature Monitoring
The Rosemount 848T FOUNDATION™ fieldbus Temperature Transmitter: Simplifies and reduces the cost of a plant’s
process control architecture. It eliminates traditional temperature monitoring methods (wire direct, low cost single
input transmitters, and multiplexers) with the introduction of this intrinsically safe, eight input transmitter that
mounts beside the process. The use of FOUNDATION™ fieldbus enables a quantum leap in temperature monitoring.
When combined with the Rosemount 3420 Fieldbus Interface Module, Rosemount 848T measurements can be
interfaced to existing systems.
The Rosemount 848T Wireless Temperature Transmitter: Ideal for high density measurement applications.
Reduces the total installed cost per wireless temperature measurement, which gives a cost effective solution in
hard-to-reach or cost prohibitive locations. The Rosemount 848T Wireless is an Intrinsically Safe (I.S.) device that
can be mounted practically anywhere. Each input can be configured for a variety of sensors, such as RTD,
thermocouple, mV, ohm, and 4–20 mA signals.
HIGH DENSITY MEASUREMENT
APPLICATIONS
Ideal for situations with multiple temperature
measurements within close proximity to each other,
such as distillation columns, tanks, boilers, and heat
exchangers.
MOUNTS PRACTICALLY ANYWHERE
Provides optimum mounting flexibility with its
ambient temperature limits, RFI immunity
compliance, Intrinsic Safety approvals, and ability to
mount in industrial environments.
ECONOMICAL SOLUTION
Reduces installation and operational costs by as
much as 70 percent per point when compared to
traditional sensor wire direct application temperature
measurements.
Rosemount High Density Temperature Solutions
Rosemount 1080/1082 Multipoint Sensors
Provides multiple measurement points in one process connection
using thermocouple and RTD sensors. Integrate with 848T Multi
Input Temperature Transmitters for a complete solution.
3420 Fieldbus Interface Module
Provides an interface between FOUNDATION fieldbus instruments
and systems without fieldbus capability using standard interface
protocols.
1420 Wireless Gateway
Offers robust security, easy host integration with no additional
software, and continuous network optimization to maximize data
reliability and power module life of the wireless devices. Provides
interface between WirelessHART field network and host systems
using standard interface protocols.
Temperature-2
Product Data Sheet
00813-0100-4697, Rev GA
Catalog 2008 - 2009
Rosemount 848T Family
The Rosemount 848T Eight Input Temperature Transmitter
ECONOMICAL SOLUTION
The Rosemount 848T offers the lowest cost solution
for temperature monitoring measurements (e.g.
distillation columns, tanks, reactors, boilers, etc.). It
can reduce installed costs by as much as 70 percent
per point when compared to traditional sensor wire
direct applications.
REDUCES I.S. BARRIER COSTS
For I.S. installations, only one barrier is needed to
safely power several Rosemount 848T transmitters.
As a result, one barrier can support at least 24
temperature measurement points, which results in
significant savings. The new Fieldbus Intrinsically
Safe Concept (FISCO) certification on the
Rosemount 848T allows even more measurements
per I.S. segment.
EIGHT INDEPENDENT SENSOR INPUTS
The Rosemount 848T accepts eight independently
configurable sensor inputs (2- and 3-wire RTDs,
thermocouples, mV, and ohm).
MOUNTS PRACTICALLY ANYWHERE
The Rosemount 848T’s ambient temperature limits,
RFI immunity compliance, I.S. approvals, and ability
to mount in industrial environments provides
optimum mounting flexibility.
848T EIGHT INPUT TEMPERATURE TRANSMITTER
DIAGNOSTICS AND MAI FUNCTION
BLOCKS
FOUNDATION fieldbus offers inherent diagnostics that
provide continuous measurement status (good, bad,
or uncertain) as well as sensor failure indication. The
Rosemount 848T also offers the Multiple Analog
Input (MAI) function block, which allows all eight
sensor inputs to communicate with one function
block, resulting in greater network efficiency.
CONVERTS ANALOG TO FIELDBUS
The Rosemount 848T can accept 4–20 mA inputs
then outputs the value onto FOUNDATION fieldbus.
The optional analog connector allows quick
connection of the Field Communicator for local
configuration.
The Rosemount 848T Transmitters power
PlantWeb® providing multi-input devices
with calculating capability using Input
Selector function blocks.
Rosemount Temperature Solutions
Rosemount 644 Temperature Transmitter
Rosemount 248 Temperature Transmitter
Head mount styles available with HART or FOUNDATION fieldbus
protocol. Rail mount style available for HART protocol.
Head mount (DIN B) and Rail mount style with HART protocol and
complete temperature assembly.
Rosemount 3420 Fieldbus Interface Module
Rosemount 3144P Temperature Transmitter
Provides an interface between FOUNDATION fieldbus instruments
and systems without fieldbus capability using standard interface
protocols.
Two-compartment housing, dual sensor design available with
HART or Foundation fieldbus protocol.
Rosemount 148 Temperature Transmitter
Rosemount sensors, thermowells, and extensions
Head mount style (DIN B) PC-programmable transmitter.
Rosemount has a broad offering of RTD and thermocouples that
are designed to meet plant requirements.
Temperature-3
Product Data Sheet
00813-0100-4697, Rev GA
Catalog 2008 - 2009
Rosemount 848T Family
Specifications
FUNCTIONAL
Backup Link Active Scheduler (LAS)
Inputs
The transmitter is classified as a device link master, which means
it can function as a Link Active Scheduler (LAS) if the current link
master device fails or is removed from the segment.
Eight independently configurable channels including combinations
of 2- and 3-wire RTDs, thermocouples, mV, and Ω inputs.
4-20 mA inputs using optional connector(s).
All sensor terminals are rated to 42.4 VDC.
Outputs
Manchester-encoded digital signal that conforms to IEC 1158-2
and ISA 50.02.
Status
If self-diagnostics detect a sensor burnout or a transmitter failure,
the status of the measurement will be updated accordingly.
The host or other configuration tool is used to download the
schedule for the application to the link master device. In the
absence of a primary link master, the transmitter will claim the LAS
and provide permanent control for the H1 segment.
FOUNDATION Fieldbus Parameters
Schedule Entries
Links
Virtual Communications Relationships (VCR)
25
30
20
PHYSICAL
Ambient Temperature Limits
Mounting
–40 to 185 °F (–40 to 85 °C)
The Rosemount 848T can be mounted directly onto a DIN rail or it
can be ordered with an optional junction box. When using the
optional junction box, the transmitter can be mounted onto a panel
or to a 2-in. pipe stand (with option code B6).
Isolation
Input/output isolation is tested to 500 VAC rms (707 VDC).
Input/input isolation between each sensor input connector is
tested to 500 VAC rms (707 VDC). Input/input isolation between
sensors on the same input connector is 3 VAC at 50 – 60 Hz, 1.5
VDC.
Power Supply
Powered over FOUNDATION fieldbus with standard fieldbus power
supplies. The transmitter operates between 9.0 and 32.0 V dc,
22 mA maximum. (Transmitter power terminals are rated
to 42.4 V dc.)
Transient Protection
The transient protector (option code T1) helps to prevent damage
to the transmitter from transients induced on the loop wiring by
lightening, welding, heavy electrical equipment, or switch gears.
This option is installed at the factory for the Rosemount 848T and
is not intended for field installation.
ASME B 16.5 (ANSI)/IEEE C62.41-1991
(IEEE 587), Location Categories A2, B3.
6 kV / 3 kA peak (1.2 x 50 μS Wave 8 x 20 μS Combination Wave)
Entries for Optional Junction Box
No entry
• Used for custom fittings
Cable Gland
• 9 x M20 nickel-plated brass glands for 7.5–11.9 mm
unarmored cable
Conduit
• 5 plugged 0.86-in. diameter holes suitable for installing 1/2-in.
NPT fittings.
Materials of Construction for Optional Junction Box
Junction Box Type
Aluminum
Plastic
Stainless Steel
Weight
Assembly
6 kV / 0.5 kA peak (100 kHz Ring Wave)
4 kV peak EFT (5 x 50 nS Electrical Fast Transient)
Update Time
Approximately 1.5 seconds to read all eight inputs.
Humidity Limits
0–100% non-condensing relative humidity
Turn-on Time
Performance within specifications is achieved in less than 50
seconds after power is applied to the transmitter.
Alarms
The AI and ISEL function blocks allow the user to configure the
alarms to HI-HI, HI, LO, or LO-LO with a variety of priority levels
and hysteresis settings.
Temperature-4
Paint
Epoxy Resin
NA
NA
Rosemount 848T only
Aluminum(1)
Plastic (1)
Stainless Steel (1)
Weight
oz
lb
9.60
78.2
58.1
77.0
0.60
4.89
3.68
4.81
kg
0.27
2.22
1.65
2.18
(1) Add 35.2 oz (2.2 lb, 0.998 kg) for nickel-plated brass glands
Environmental Ratings
Type 4X, and CSA Enclosure Type 4X, and IP66 with optional
junction box.
Product Data Sheet
00813-0100-4697, Rev GA
Catalog 2008 - 2009
FUNCTION BLOCKS
Analog Input (AI)
Rosemount 848T Family
Susceptibility
• Processes the measurement and makes it available on the
fieldbus segment.
• ESD
• 4 kV contact discharge
• 8 kV air discharge
• Allows filtering, alarming, and engineering unit changes.
• Radiated
• 80 – 1000 MHz at 10 V/m AM
Input Selector (ISEL)
• Used to select between inputs and generate an output using
specific selection strategies such as minimum, maximum,
midpoint, or average temperature.
• Since the temperature value always contains the
measurement status, this block allows the selection to be
restricted to the first “good” measurement.
• Burst
• 1 kV
• Surge
• 1 kV line–to-ground
• Conducted
• 150 kHz to 80 MHz at 3V
• Magnetic
• 50/60 Hz at 30 A/m
Multiple Analog Input Block (MAI)
• The MAI block allows the eight AI blocks to be multiplexed
together so they serve as one function block on the H1
segment, resulting in greater network efficiency.
PERFORMANCE
The transmitter maintains a specification conformance of
at least ±3.
Stability
• ±0.1% of reading or 0.1 °C (0.18 °F), whichever is greater, for
2 years for RTDs.
• ±0.1% of reading or 0.1 °C (0.18 °F), whichever is greater, for
1 year for thermocouples.
Self Calibration
The transmitter’s analog-to-digital circuitry automatically
self-calibrates for each temperature update by comparing the
dynamic measurement to extremely stable and accurate internal
reference elements.
Vibration Effect
Transmitters are tested to the following vibration conditions with no
effect on performance:
Frequency
10 - 60 Hz
60 - 2000 Hz
Acceleration
0.21 mm peak displacement
3g
CE Electromagnetic Compatibility Compliance Testing
Meets the criteria under IEC 61326 Amendment 1, 2002:
Emissions
• 30–230 MHz, 30 dB (uV/m) at 10 m
• 230–1000 MHz, 37 dB (uV/m) at 10 m
Temperature-5
Product Data Sheet
00813-0100-4697, Rev GA
Catalog 2008 - 2009
Rosemount 848T Family
ACCURACY
TABLE 1. Input Options/Accuracy
Input Ranges
Sensor Option
Sensor Reference
2- and 3-Wire RTDs
Pt 100 ( = 0.00385)
IEC 751; = 0.00385, 1995
Pt 100 ( = 0.003916)
JIS 1604, 1981
Pt 200
IEC 751; = 0.00385, 1995
Pt 500
IEC 751; = 0.00385, 1995
Pt 1000
IEC 751; = 0.00385, 1995
Ni 120
Edison Curve No. 7
Cu 10
Edison Copper Winding No. 15
Cu 100 (a=428)
GOST 6651-94
Cu 50 (a=428)
GOST 6651-94
Cu 100 (a=426)
GOST 6651-94
Cu 50 (a=426)
GOST 6651-94
Thermocouples—Cold Junction Adds + 0.5 °C to Listed Accuracy
NIST Type B (Accuracy varies
NIST Monograph 175
according to input range)
NIST Type E
NIST Monograph 175
NIST Type J
NIST Monograph 175
NIST Type K
NIST Monograph 175
NIST Type N
NIST Monograph 175
NIST Type R
NIST Monograph 175
NIST Type S
NIST Monograph 175
NIST Type T
NIST Monograph 175
DIN L
DIN 43710
DIN U
DIN 43710
w5Re26
ASTME 988-96
GOST Type L
GOST R 8.585-2001
Millivolt Input(1)—Not approved for use with CSA Option Code I6
2- and 3-Wire Ohm Input
Multipoint Sensors(2)
Accuracy Over Range(s)
°C
°F
°C
°F
–200 to 850
–200 to 645
–200 to 850
–200 to 850
–200 to 300
–70 to 300
–50 to 250
-185 to 200
-185 to 200
-50 to 200
-50 to 200
–328 to 1562
–328 to 1193
–328 to 1562
–328 to 1562
–328 to 572
–94 to 572
–58 to 482
-365 to 392
-365 to 392
-122 to 392
-122 to 392
± 0.30
± 0.30
± 0.54
± 0.38
± 0.40
± 0.30
± 3.20
± 0.48
± 0.96
± 0.48
± 0.96
± 0.54
± 0.54
± 0.98
± 0.68
± 0.72
± 0.54
± 5.76
±0.86
±1.73
±0.86
±1.73
100 to 300
212 to 572
301 to 1820
573 to 3308
–50 to 1000
–58 to 1832
–180 to 760
–292 to 1400
–180 to 1372
–292 to 2502
–200 to 1300
–328 to 2372
0 to 1768
32 to 3214
0 to 1768
32 to 3214
–200 to 400
–328 to 752
–200 to 900
–328 to 1652
–200 to 600
–328 to 1112
0 to 2000
32 to 3632
-200 to 800
-392 to 1472
–10 to 100 mV
0 to 2000 ohms
± 6.00
± 10.80
± 1.54
± 2.78
± 0.40
± 0.72
± 0.70
± 1.26
± 1.00
± 1.80
± 1.00
± 1.80
± 1.50
± 2.70
± 1.40
± 2.52
± 0.70
± 1.26
± 0.70
± 1.26
± 0.70
± 1.26
± 1.60
± 2.88
± 0.71
±1.28
± 0.05 mV
± 0.90 ohm
(1) 4–20 mA inputs are scaled to 20 – 100 mV.
(2) Multipoint (up to 8 points) thermocouples and RTDs are available for purchase with the Rosemount 848T. Input ranges and accuracy for these sensors will
depend on the specific multipoint sensor chosen. For more information, contact your local Emerson representative.
Accuracy Notes
Differential capability exists between any two sensor types:
For all differential configurations, the input range is X to +Y where
X = Sensor 1 minimum - Sensor 2 max.
Y = Sensor 1 maximum - Sensor 2 min.
Accuracy for differential configurations:
If sensor types are similar (for example, both RTDs or both
thermocouples), the accuracy = 1.5 times worst case accuracy of
either sensor type. If sensor types are dissimilar (for example, one
RTD and one thermocouple), the accuracy = Sensor 1 Accuracy +
Sensor 2 Accuracy.
Temperature-6
Product Data Sheet
00813-0100-4697, Rev GA
Catalog 2008 - 2009
Rosemount 848T Family
AMBIENT TEMPERATURE EFFECT
Transmitters may be installed in locations where the ambient
temperature is between –40 and 85 °C (–40 and 185 °F).
TABLE 2. Ambient Temperature Effects
Accuracy per 1.0 °C (1.8 °F) Change in Ambient
Temperature(1)C
NIST Type
RTD
Pt 100 (α = 0.00385)
• 0.003 °C (0.0054 °F)
Pt 100 (α = 0.003916)
Temperature Range (°C)
NA
• 0.003 °C (0.0054 °F)
NA
Pt 500, Pt 1000, Ni 120
• 0.003 °C (0.0054 °F)
NA
Pt 200
• 0.004 °C (0.0072 °F)
NA
Cu 10
• 0.03 °C (0.054 °F)
NA
Cu 100 (a=428)
• 0.002 °C (0.0036 °F)
NA
Cu 50 (a=428)
• 0.004 °C (.0072 °F)
NA
Cu 100 (a=426)
• 0.002 °C (0.0036 °F)
NA
Cu 50 (a=426)
• 0.004 °C (.0072 °F)
NA
Thermocouple (R = the value of the reading)
Type B
• 0.014 °C
NA
• 0.032 °C - (0.0025% of (R - 300))
• 0.054 °C - (0.011% of (R - 100))
• R ≥ 1000
• 300 ≤ R < 1000
• 100 ≤ R < 300
Type E
• 0.005 °C + (0.00043% of R)
• All
Type J, DIN Type L
• 0.0054 °C + (0.00029% of R)
• 0.0054 °C + (0.0025% of |R|)
• R≥0
• R<0
Type K
• 0.0061 °C + (0.00054% of R)
• 0.0061 °C + (0.0025% of |R|)
• R≥0
• R<0
Type N
• 0.0068 °C + (0.00036% of R)
• All
Type R, Type S
• 0.016 °C
• 0.023 °C - (0.0036% of R)
• R ≥ 200
• R < 200
Type T, DIN Type U
• 0.0064 °C
• 0.0064 °C - (0.0043% of |R|)
• R≥0
• R<0
GOST Type L
• 0.007 > 0 °C
• 0.007 ± 0.003% < 0 °C
•
Millivolt
2- and 3-wire Ohm
0.0005 mV
0.0084 ohms
NA
NA
(1) Change in ambient is in reference to the calibration temperature of the transmitter (20 °C (68 °F) typical from the factory).
Ambient Temperature Notes
Analog to Fieldbus Performance
Examples:
When using a Pt 100 (a = 0.00385) sensor input and the
transmitter is at 40 °C ambient temperature, temperature effects
would be:
0.003 °C x (40 - 20) = 0.06 °C.
Worst case error would be:
Sensor Accuracy + Temperature Effects = 0.30 °C + 0.06 =
0.36°C.
4– 20 mA inputs are scaled to 20 – 100 mV.
Accuracy(1):0.0625% of span
Temperature Effect: [0.002% of reading + 0.000625%
of span] per 1.0 °C change in Ambient Temperature.
(1) To obtain accuracy, the mV input must be calibrated while
using the optional analog connector.
Total Probable Error =
0.30 2 + 0.06 2 = 0.31°C
Temperature-7
Product Data Sheet
00813-0100-4697, Rev GA
Catalog 2008 - 2009
Rosemount 848T Family
Product Certifications
HAZARDOUS LOCATIONS CERTIFICATION
North American Certificates
I
TABLE 4. FM Approved Entity Parameters(1)
Factory Mutual (FM) Certifications
Power/Bus
Sensor
I5
Ui = 30 V
Ii = 300 mA
Pi = 1.3 W
Ci = 2.1 nF
Li = 0
Uo = 12.02 V
Io = 13.6 mA
Po = 0.04 W
Ca = 1.36 μF
La = 160 mH
Intrinsically Safety and Non-Incendive
Intrinsically Safe Class I, Division 1 Groups A, B, C, D.
Temperature Code:
T4 (Ta = –40 to 60 °C
Nonincendive for Class I, Division 2, Groups A, B, C, D.
Temperature Code:
T4A (Ta = –40 to 85 °C)
T5 (Ta = –40 to 70 °C)
When installed to Rosemount Control Drawing 00848-4402.
(1) Intrinsically safe and non-incendive parameters
Canadian Standards Association (CSA) Certifications
S002 Option is not valid with intrinsic safety (I5 and IE)
approval.
IE
FISCO (Fieldbus Intrinsically Safe Concept) Intrinsic Safety
FISCO for Class I, Division 1, Groups A, B, C, D.
Temperature Code:
T4 = (Ta = – 40 to 60 °C)
Nonincendive for Class I, Division 2, Groups A, B, C, D.
Temperature Code:
T4A (Ta = –40 to 85 °C)
T5 (Ta = –40 to 70 °C)
Suitable in FISCO System when installed to Rosemount
Control Drawing 00848-4402.
E6
Class II, Division 1, Groups E, F, and G.
Class III
Must be installed in enclosure option JX3.
Install per drawing 00848-1041.
Conduit seal not required.
I6
S002 Option is not valid with intrinsic safety (I5 and IE)
approval.
TABLE 3. Entity Parameters
N5
NK
Power/Bus
Sensor
Ui = 17.5 V
Ii = 380 mA
Pi = 5.32 W
Ci = 2.1 nF
Li = 0
Uo = 12.02 V
Io = 13.5 mA
Po = 0.04W
Ca = 1.36 μF
La = 160 mH
Dust Ignition-Proof for Use in Class II/III, Division 1, Groups
E, F, G.
Nonincendive for Class I, Division 2, Groups A, B, C, D.
When installed to Rosemount Control Drawing 00848-4402.
Temperature Code:
T4A (Ta = –40 to 85 °C)
T5 (Ta = –40 to 70 °C)
Rosemount Enclosure Required.
Indoor Hazardous (Classified) Locations.
NonIncendive for Class I, Division 2, Groups A, B, C, D.
When installed to Rosemount Control Drawing 00848-4402.
Temperature Code:
T4a (Tamb = -40 to 85 °C)
T5 (Tamb = -40 to 70 °C)
Rosemount Enclosure Required.
Indoor Hazardous (Classified) Locations.
Temperature-8
Explosion-Proof and Dust Ignition-Proof
Class I, Division 1, Groups B, C, and D.
Intrinsic Safety and Class I, Division 2
Class I, Division 1, Groups A, B, C, and D.
Temperature Code:
T3 = (– 50 ≤ Ta ≤ 60 °C)
Suitable for Class I, Division 2, Groups A, B, C, and D.
Temperature Code:
T3 = (– 50 ≤ Ta ≤ 60 °C)
Rated at 42.4 V dc Max.
Install per drawing 00848-4403.
S002 Option is not valid with intrinsic safety (I6 and IF)
approval.
TABLE 5. CSA Approved Entity Parameters
IF
Power/Bus
Sensor
Ui = 30 V
Ii = 300 mA
Ci = 2.1 nF
Li = 0
Uo = 12.02 V
Io = 11.8 mA
Ca = 1.36 μF
La = 225 mH
FISCO and Class I, Division 2
Class I, Division i, groups A, B, C, and D.
Temperature Code:
T3C = (– 50 ≤ Ta ≤ 60 °C)
Class I, Division 2, Groups A, b, C, and D.
Temperature Code:
T3C = (– 50 ≤ Ta ≤ 60 °C)
FISCO Output when installed per Installation Drawing
00848-4403.
S002 Option is not valid with intrinsic safety (I6 and IF)
approval.
Product Data Sheet
00813-0100-4697, Rev GA
Catalog 2008 - 2009
Rosemount 848T Family
Special Conditions for Safe Use (x):
TABLE 6. CSA Approved Entity Parameters
N6
Power/Bus
Sensor
Ui = 17.5 V
Ii = 380 mA
Ci = 2.1 nF
Li = 0
Uo = 12.02 V
Io = 11.8 mA
Ca = 1.36 μF
La = 225 mH
Class I, Division 2
Suitable for use in Class I, Division 2, Groups A, B, C, D.
when installed per Rosemount drawing 00848-4403.
Temperature Code:
T3C = (– 50 ≤ Ta ≤ 60 °C)
This apparatus must be installed in an enclosure which affords it a
degree of protection of at least IP20. Non-metallic enclosures must
have a surface resistance of less than 1G ohm, light alloy or
zirconium enclosures must be protected from impact and friction
when installed.
The apparatus will not meet the 500V rms isolation test required
by Clause 6.4.12 on EN50 020:1994. This must be taken into
account when installing the apparatus.
N1
TABLE 9. Entity Parameters
Must be installed in a suitable enclosure as determined
acceptable by the local inspection authority.
European Certifications
CENELEC Certifications
I1
Intrinsic Safety
Certification Number: Baseefa02ATEX0010X
ATEX Marking
II 1 G
EEx ia IIC T4 (Tamb = –50 to 60 °C)
1180
TABLE 7. CENELEC Approved Entity Parameters
Power/Bus
Sensor
Ui = 30 V
Ii = 300 mA
Pi = 1.3 W
Ci = 0
Li = 0
Uo = 12.5 V
Io = 66 mA
Po = 40 mW
Ci = 0
Li = 0
Special Conditions for Safe Use (x):
This apparatus must be installed in an enclosure which affords it a
degree of protection of at least IP20. Non-metallic enclosures must
have a surface resistance of less than 1G ohm, light alloy or
zirconium enclosures must be protected from impact and friction
when installed.
The apparatus will not meet the 500V rms isolation test required
by Clause 6.4.12 on EN50 020:1994. this must be taken into
account when installing the apparatus.
IA
FISCO (Fieldbus Intrinsically Safe Concept) Intrinsic Safety
Certification Number: Baseefa02ATEX0010X
ATEX Marking
II 1 G
EEx ia IIC T4 (Tamb = –50 to 60 °C)
1180
TABLE 8. CENELEC Approved Entity Parameters
Power/Bus
Sensor
Ui = 17.5 V
Ii = 380 mA
Pi = 5.32 W
Ci = 0
Li = 0
Uo = 12.5 V
Io = 66 mA
Po = 40 mW
Ci = 0
Li = 0
CENELEC Type n
Certification Number: BAS01ATEX3199X
ATEX Marking
II 3 G
EEx nL IIC T5 (Tamb = –40 to 65 °C)
Power/Bus
Sensor
Ui = 42.4 V
Ci = 0
Li = 0
Uo = 5 V
Io = 2.5 mA
Co = 1000 μF
Lo = 1000 mH
Special Conditions for Safe Use (x):
1. Provisions shall be made, external to the apparatus, to
prevent the rated voltage (42.4 V dc) being exceeded by
transient disturbances of more than 40%.
2. The ambient temperature range of use shall be the most
restrictive of the apparatus, cable gland, or blanking plug.
NC
CENELEC Type n Component
Certification Number: BAS01ATEX3198U
ATEX Marking
II 3 G
EEx nL IIC T4 (Tamb = –50 to 85 °C)
EEx nL IIC T5 (Tamb = –50 to 70 °C)
Special Conditions for Safe Use (x):
1. The component must be housed in a suitably certified
enclosure.
2. Provision shall be made, external to the component, to
prevent the rated voltage (42.4V d.c.) being exceeded by
transient disturbances of more than 40%.
ND
CENELEC Dust Ignition Proof
Certification Number: BAS01ATEX1315X
ATEX Marking
II 1 D
T90C (Tamb = – 40 to 65 °C) IP66
Special Conditions for Safe Use (x):
1. The user must ensure that the maximum rated voltage and
current (42.2 volts, 22 mA, DC) are not exceeded. All
connections to other apparatus or associated apparatus shall
have control over this voltage and current equivalent to a
category “ib” circuit according to EN50020.
2. Component approved EEx e cable entries must be used
which maintain the ingress protection of the enclosure to at
least IP66.
3. Any unused cable entry holes must be filled with component
approved EEx e blanking plugs.
4. The ambient temperature range of use shall be the most
restrictive of the apparatus, cable gland, or blanking plug.
Temperature-9
Product Data Sheet
Rosemount 848T Family
NE
BASEEFA/CENELEC ATEX TYPE 'n' APPROVAL
Certification Number: BAS01ATEX3199X
ATEX Marking
II 3 G
EEx nA nL IIC T5 (Tamb = -40 to 65 °C)
NOTE: NE is valid with S001 Input Type ONLY.
TABLE 10. Baseefa Approved Entity Parameters
Power/Bus
Ui = 42.4 V
Ci = 0
Li = 0
Sensor
Uo = 5 V dc
Io = 2.5 mA
Co = 1000 μF
Lo = 1000 mH
Special Conditions of Safe Use (x):
1. Provisions shall be made, external to the apparatus, to
prevent the rated voltage (42.2V dc) being exceeded by
transient disturbances of more than 40%.
2. The ambient temperature range of use shall be the most
restrictive of the apparatus, cable gland or blanking plug.
NF
COMPONENT Approval
Certification Number: BAS01ATEX3198U
ATEX Marking
II 3 G
EEx nA nL IIC T4 (Tamb = -50 to 85 °C)
EEx nA nL IIC T5 (Tamb = -50 to 70 °C)
NOTE: NF is valid with S001 Input Type ONLY..
TABLE 11. Baseefa Approved Entity Parameters
Power/Bus
Ui = 42.4 V
Ci = 0
Li = 0
Sensor
Uo = 5 V dc
Io = 2.5 mA
Co = 1000 μF
Lo = 1000 mH
Special Conditions of Safe Use (x):
1. The component must be housed in a suitable certified
enclosure.
2. Same as condition 1 for Cert: BAS01ATEX3198U
Australian Certifications
Standard Australia Quality Assurance Service (SAA)
NOTE
Consult factory for SAA availability.
I7
Intrinsic Safety
Ex ia IIC T4 (Tamb = – 40 to 60 °C)
IG
IECEx FISCO
Ex ia IIC T4 (Tamb = – 40 to 60 °C)
N7
Type n
Ex n IIC T4 (Tamb = – 50 to 85 °C)
Ex n IIC T5 (Tamb = – 50 to 70 °C)
Conditions of Safe Use (x):
1. The 848T shall be used according to its input and output
parameters.
2. For Ex ia applications, the equipment is to be DIN-rail
mounted in an IP20 area, mounted in a Rosemount Junction
Box Option Code JPx, JAx, or JSx, or mounted in any suitable
enclosure rated to a minimum of IP20.
Temperature-10
00813-0100-4697, Rev GA
Catalog 2008 - 2009
3. For Ex n applications, the equipment is to be mounted in a
Rosemount Junction Box Option Code JPx, JAx, or JSx, or
mounted in any suitable enclosure rated to a minimum of
IP54.
4. When installed in an enclosure, cable glands are to selected
and used to ensure a minimum rating of IP20 for Ex ia
equipment or a minimum rating of IP54 for Ex n equipment.
Unused cable glands or conduit entries are to be closed to
ensure the required IP rating is maintained.
5. When the equipment is to be installed and used in accordance
with the FISCO concept, the transient protection option is to
be fitted.
6. The sensor terminals are for use with passive temperature
sensors only (resistance or thermocouple) that are classed as
simple devices.
Brazilian Certifications
Centro de Pesquisas de Energia Eletrica
(CEPEL) Approval
NOTE
Consult factory for CEPEL availability.
Product Data Sheet
00813-0100-4697, Rev GA
Catalog 2008 - 2009
Rosemount 848T Family
Dimensional Drawings
Junction Boxes with no entries (option codes JP1, JA1, and JS1)– external dimensions are the same as those
outlined for the other junction box materials in this section.
Rosemount 848T
Top View
Security Switch
Side View
3-D View
1.7
(43)
Simulation Switch
6.7
(170)
3.7
(93)
Removable Wiring
Connection
Dimensions are in inches (millimeters)
Aluminum/Plastic Junction Box—Cable Gland (option codes JA2 and JP2)
Top View
3-D View
10.24 (260)
Ground Screw
Side View
Front View
7.84 (199.2)
2.44 (62)
1.57 (40)
6.30 (160)
4.41 (112)
1.73 (44)
2.28 (58)
1.10 (28)
3.78 (96)
Dimensions are in inches (millimeters)
Temperature-11
Product Data Sheet
00813-0100-4697, Rev GA
Catalog 2008 - 2009
Rosemount 848T Family
Stainless Steel Junction Box—Cable Gland (option code JS2)
Top View
3-D View
9.91 (231)
7.7 (196)
Ground Screw
Side View
Front View
9.14 (232.2)
1.8 (46)
1.1 (28)
7.72 (196)
6.61 (168)
1.73 (44)
4.0 (102)
2.4 (62)
1.8 (47)
1.2 (30)
Dimensions are in inches (millimeters)
Aluminum/Plastic Junction Box—Conduit Entry (option codes JA3 and JP3)
Top View
3-D View
10.2 (260)
Front View
Side View
157 (40)
2.44 (62)
10.2 (260)
3.5 (89)
1.7 (42)
Five Plugged 0.86-in. diameter
holes suitable for installing 1/2-in.
NPT fittings
Dimensions are in inches (millimeters)
Temperature-12
Product Data Sheet
00813-0100-4697, Rev GA
Catalog 2008 - 2009
Rosemount 848T Family
Stainless Steel Junction Box—Conduit Entry (option code JS3)
Top View
3-D View
9.1 (231)
7.7 (196)
Ground Screw
Front View
Side View
1.4 (35)
1.1 (27)
2.8 (70)
1.2 (30)
4.0 (102)
2.4 (62)
1.6 (42)
1.8 (4.7)
0.06 (1.5)
Five Plugged 0.86-in. diameter holes suitable for installing 1/2-in. NPT fittings
Dimensions are in inches (millimeters)
MOUNTING OPTIONS
Aluminum/Plastic Junction Box
(styles JA and JP)
Front View
5.1
(130)
10.2
(260)
Side View
Stainless Steel Junction Box
(style JS)
Front View
Side View
4.5
(114)
6.6 (167) fully
assembled
7.5 (190) fully
assembled
Dimensions are in inches (millimeters)
Aluminum/Plastic Junction Box
Mounted on a Vertical Pipe
Stainless Steel Junction Box
Mounted on a Vertical Pipe
Temperature-13
Product Data Sheet
Rosemount 848T Family
00813-0100-4697, Rev GA
Catalog 2008 - 2009
Ordering Information
Model
Product Description
848T
Multisensor Transmitter Temperature Inputs
Code
Communications Protocol
F
Code
I5(4)
FOUNDATION™ fieldbus digital signal (includes AI, MAI, and ISEL function blocks, and Backup Link Active Scheduler)
Product Certifications(1)
Rosemount Junction
Box required?
FM Intrinsic Safety and Non-Incendive, Class 1, Division 2
No
IE
FM FISCO (Fieldbus Intrinsically Safe Concept) and Non-Incendive Class I, Division 2
No
N5
FM Class I, Division 2, and Dust Ignition Proof
Yes
E6
CSA Explosion-Proof Approval and Dust Ignition Proof
Yes(2)
I6(4)
CSA Intrinsic Safety and Non-Incendive, Class 1, Division 2
No
IF(4)
CSA FISCO (Fieldbus Intrinsically Safe Concept) and suitable for Class I, Division 2
No
N6
CSA Class I, Division 2
No
I1
ATEX Intrinsic Safety
No
IA
ATEX FISCO (Fieldbus Intrinsically Safe Concept)
No
N1
ATEX Type n (EEx nL)
Yes
NC
ATEX Type n Component (EEx nL)
No(3)
ND
ATEX Dust Ignition Proof
Yes
NE(4)
ATEX Type n (EEx nA nL)
Yes
NF(4)
ATEX Type n Component (EEx nA nL)
No(3)
I7
IECEx Intrinsic Safety
No
IG
IECEx FISCO (Fieldbus Intrinsically Safe Concept)
No
N7
IECEx Type n (Ex nA nL)
Yes
NJ
IECEx Type n Component (Ex nA nL)
No(3)
NK
FM Class 1, Division 2
No
NA
No Approval
No
Code
Input Types
S001
S002(5)
Code
Resistance Temperature Detectors and Thermocouples
RTDs, Thermocouples, and 4–20 mA
Options
Transient Protection
T1
Transient Protection
Mounting Kit Options
B6
Mounting Bracket for 2-in. pipe mounting and for panel mounting – SST bracket and bolts
Enclosure Options
JP1
Plastic Junction Box; No Entries
JP2
Plastic Box, Cable Glands (9 x M20 nickel-plated brass glands for 7.5–11.9 mm unarmored cable)
JP3
Plastic Box, Conduit Entries (5 plugged holes, suitable for installing 1/2-in. NPT fittings)
JA1
Aluminum Junction Box; No Entries
JA2
Aluminum Cable Glands (9 x M20 nickel-plated brass glands for 7.5–11.9 mm unarmored cable)
JA3
Aluminum Conduit Entries (5 plugged holes, suitable for installing 1/2-in. NPT fittings)
JS1
Stainless Steel Junction Box; No Entries
JS2
Stainless Steel Box, Cable Glands (9 x M20 nickel-plated brass glands for 7.5–11.9 mm unarmored
cable)
JS3
Stainless Steel Box, Conduit Entries (5 plugged holes, suitable for installing 1/2-in. NPT fittings)
JX3
Explosion-Proof Box, Conduit Entries (4 plugged holes, suitable for installing 1/2-in. NPT fittings)
Custom Software Configuration Request
C1
Factory configuration of date, descriptor, and message fields (CDS required)
Options continued on next page
Temperature-14
Product Data Sheet
00813-0100-4697, Rev GA
Catalog 2008 - 2009
Model
Rosemount 848T Family
Product Description
Configuration Options(6)
F5
50 Hz Line Voltage Filter
Calibration Certification
Q4
3 Point Calibration Certificate Provided
Conduit Electrical Connector
GE(7)
M12, 4-pin, Male Connector (eurofast®)
GM(7)
A size Mini, 4-pin, Male Connector (minifast®)
Typical Model Number:
848T
F
I5
S001 T1
B6 JA2
(1) Consult factory for availability.
(2) Enclosure Option JX3 must be ordered with Product Certification Code E6.
(3) The Rosemount 848T ordered with component approval is not approved as a stand-alone unit. Additional system certification is required.
(4) Available only with S001 option
(5) S002 is only available with Product Certification N5, N6, N1, NC, Nk, and NA.
(6) Configuration is the same for all eight inputs.
(7) Available with no approval or Intrinsically Safe approvals only. For FM Intrinsically Safe (option code I5), install in accordance with Rosemount drawing
00848-4402.
Transmitter Tag
Hardware
• tagged in accordance with customer requirements
• permanently attached to the transmitter
Software
• the transmitter can store up to 30 characters
• if no characters are specified, the first 30 characters of the
hardware tag will be used
Rosemount 848T Analog Input Wiring Diagram
VDC
+ –
+
4–20 mA
Transmitter
–
–
1A
2A
4 – 20 mA to 20 – 100 mV*
Sensor Tag
* Optional Analog Connector required.
Hardware
• a provided plastic tag to record identification of eight sensors
• this information can be printed at the factory upon request
• in the field, the tag can be removed, printed onto, and
reattached to the transmitter
Software
• if sensor tagging is requested, the Sensor Transducer Block
sensor_sn parameters will be set at the factory
• the sensor_sn parameters can be updated in the field
Wiring
Rosemount 848T Sensor Wiring Diagram
+
1 2 3
2-wire RTD
and Ohms
1 2 3
3-wire RTD
and Ohms*
-
1 2 3
1 2 3
Thermocouples 2-Wire RTD with
and Millivolts Compensation Loop**
* Rosemount 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.
Transmitter Configuration
The transmitter is available with the standard configuration setting.
The configuration settings and block configuration may be
changed in the field with the Fisher-Rosemount Systems DeltaV®,
with AMSinside, or other FOUNDATION fieldbus host or
configuration tool.
Standard Configuration
Unless otherwise specified, the transmitter will be shipped as
follows for all eight sensors:
Standard Configuration Settings
Sensor Type(1)
Damping(1)
Measurement Units(1)
Output(1)
Line Voltage Filter(1)
Temperature Specific
Blocks
FOUNDATION™ fieldbus
Function Blocks
** The transmitter must be configured for a 3-wire RTD in order
to recognize an RTD with a compensation loop.
Thermocouple Type J
5 seconds
°C
Linear with Temperature
60 Hz
• Measurement Transducer Block (1)
• Sensor Transducer Block (8)
• Differential Transducer Block (4)
• Analog Input (8)
• Multiple Analog Input (1)
• Input Selector (4)
(1) For all eight sensors
Temperature-15
Product Data Sheet
00813-0100-4697, Rev GA
Catalog 2008 - 2009
Rosemount 848T Family
Coming Soon
The Rosemount 848T Wireless Temperature Transmitter
HIGH DENSITY MEASUREMENT
APPLICATIONS
Ideal for situations with multiple temperature
measurements within close proximity to each other,
such as distillation colums, tanks, boilers, and heat
exchangers.
SELF-ORGANIZING NETWORKS
Intelligent devices that provide exceptional data
reliability and network stability. The Rosemount 848T
Wireless is easy to use, allowing you to leverage
existing practices, training and maintenance
procedures, without adding wiring costs.
LAYERED SECURITY FOR NETWORK
SAFETY
Emerson Process Management’s layered approach
to wireless network security ensures that your
networks stays protected. The network devices
implement Encryption, Authentication, Verification,
Anti-Jamming and Key Management methods to
ensure data transmissions are received only by the
Wireless Gateway.
CONFIGURABLE ALERTS
The 848T Wireless has four different alert levels
configurable by the user. Alerts can be sent when the
temperature readings rise above or fall below the
user-defined temperature range. Improvements to
product quality or asset performance can be made
with four user configurable alerts.
848T WIRELESS TEMPERATURE TRANSMITTER
SMARTPOWER™
Rosemount devices incorporate SmartPower™.
SmartPower™ refers to the benefits that users enjoy
due to the engineering efforts made to reduce power
consumption. Emerson has power-optimized our
instrumentation, both hardware and software, to
extend power module life while still delivering highly
reliable measurements with rich HART data and
diagnostic information.
DIGITAL FIELD DEVICES THAT POWER
PLANTWEB
The Rosemount 848T Wireless powers
PlantWeb® by communicating
temperature diagnostics and PlantWeb
alerts that ensure process health and
enable economical multi-sensor
architecture.
Smart Wireless Solutions
Rosemount 648 Wireless Temperature Transmitter
Rosemount 702 Discrete Input Transmitter
The 648 integrates temperature measurement into a
self-organizing network to optimize plant performance while
minimizing maintenance.
The 702 integrates discrete measurements into a self-organizing
network, and accepts single or dual switch inputs.
1420 Wireless Gateway
The 1420 enables the most robust security available, easy host
integration with no additional software, and is continuously
optimizing network performance to maximize data reliability and
power module life of the wireless devices.
Rosemount 3051S Wireless Series
The scaleable 3051S integrates pressure, flow, and level
measurements into a self-organizing network solution to optimize
plant performance and reduce risk.
Temperature-16
Product Data Sheet
00813-0100-4697, Rev GA
Catalog 2008 - 2009
Rosemount 848T Family
Specifications
FUNCTIONAL
Inputs
Supports up to 4 thermocouple, 2-, 3-, and 4-wire RTD, mV, ohm,
and 4–20 mA input types.
Outputs
2.4 GHz DSSS WirelessHART, linear with temperature or input.
Humidity Limits
0–100% relative humidity
Transmit Rate
User selectable, 15 seconds to 60 minutes.
Accuracy
PT100 @ reference conditions 20 °C: ±0.30 °C (±0.54 °F).
PHYSICAL
Electrical Connections
Wireless Power Module
Intrinsically Safe, Field Replaceable Lithium-thionyl Chloride
power module. Ten year life at reference conditions.(1)
Sensor Terminals
Screw terminals permanently fixed to the terminal block.
HART Communicator Connections
Communication Terminals
Clips permanently fixed to terminal block.
Materials of Construction
Enclosure
Housing - Low-copper aluminum
Paint - Polyurethane
Cover O-ring - TBD
Mounting
Transmitter can be mounted onto a panel or 2-inch pipe stand.
Sensors must be remotely mounted.
Enclosure Rating
Type 4X; IP65.
(1)
Reference conditions are 77 °F (25 °C) and transmit
rate of once every 4 minutes.
Temperature-17
Product Data Sheet
00813-0100-4697, Rev GA
Catalog 2008 - 2009
Rosemount 848T Family
The Emerson logo is a trademark and service mark of Emerson Electric Co.
Rosemount and the Rosemount logotype are registered trademarks of Rosemount Inc.
HART is a registered trademark of the HART Communication Foundation.
FOUNDATION is a trademark of the Fieldbus Foundation.
DeltaV is a mark of one of the Emerson Process Management companies.
All other marks are the property of their respective owners.
Standard Terms and Conditions of Sale can be found at www.rosemount.com\terms_of_sale
Emerson Process Management
Rosemount Inc.
8200 Market Boulevard
Chanhassen, MN 55317 USA
T (U.S.) 1-800-999-9307
T (International) (952) 906-8888
F (952) 949-7001
www.rosemount.com
¢00813-0100-4697,¤
© 2008 Rosemount, Inc.
Emerson Process Management
Heath Place
Bognor Regis
West Sussex PO22 9SH
England
Tel 44 (1243) 863 121
Fax 44 (1243) 867 554
Emerson Process Management Asia
Pacific Private Limited
1 Pandan Crescent
Singapore 128461
T (65) 6777 8211
F (65) 6777 0947
[email protected]

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