Rosemount 848T Specifications

Product Data Sheet

July 2017

00813-0100-4697, Rev PA

Rosemount™ 848T High Density Temperature Measurement Family

 Innovative temperature measurement for high density applications that provide installation and

operational savings.

 Independently configurable inputs that support RTD, thermocouple, ohm, mV, 0–10 volt, and 4–20 mA

signals.

 Enclosure options and intrinsically safe design allows for installation close to any process, including

hazardous areas.

 WirelessHART

 Industry first measurement validation diagnostic can identify a variety of process concerns including

sensor degradation, sensor wiring connectivity, high vibration (affecting the measurement), and
abnormal process variations.

®

capabilities extends the full benefits of Plantweb™ to previously inaccessible locations.

Rosemount 848T Family

High Density Temperature Measurement

Smart Wireless delivers innovative wireless solutions for temperature measurement

 Self-organizing network delivers information rich data with greater than 99

percent data reliability and establishes a highly stable network.

 IEC-approved WirelessHART protocol .

 Emerson SmartPower

allowing field replacements without removing the transmitter from the
process, keeping personnel safe and reducing maintenance costs.

 Emerson’s layered approach to wireless network security ensures data

transmissions are secure.

FOUNDATION™ Fieldbus provides effective measurements with reduced wiring costs

 Internationally recognized digital network (IEC 61158) supports the

connection of up to 16 devices on a single twisted wire pair.

 Allows advanced computations through use of function blocks.

 Provides continuous measurement status for each measurement point.

 Lower costs by reducing wiring, terminations, and required number of I.S.

Barriers.

™

Solutions provide an intrinsically safe power module,

July 2017

Explore the benefits of Complete Point

™

Solution

from Rosemount Temperature

Measurement

 Emerson offers a selection of RTDs and thermocouples that bring superior durability

and Rosemount reliability to temperature sensing.

 A broad thermowell offering meets the demanding requirements of a variety of

process applications.

Contents

Rosemount 848T FOUNDATION Fieldbus Temperature

Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Product Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Rosemount 848T Wireless Temperature Transmitter . .25

WirelessHART... the Industry Standard . . . . . . . . . . . . . .27

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Product Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Dimensional drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

2

Emerson.com/Rosemount

July 2017

Experience global consistency and local support from worldwide Rosemount Temperature manufacturing sites

 World-class manufacturing provides globally consistent product

from every factory and the capacity to fulfill the needs of any
project.

 Experienced Instrumentation Consultants help select the right

products for each temperature application.

 An extensive global network of Emerson service and support

personnel can be onsite when and where they are needed.

Increase performance with High Density transmitters

 Transmit multiple measurements with one set of electronics.

 Mount close to process to reduce sensor wire length and increase

measurement reliability.

 Enhance accuracy with EMI correction, cold junction compensation,

and device diagnostics.

 Reduce installation costs by as much as 70 percent.

Rosemount 848T Family

Avoid unnecessary process shutdowns, on-scale failure related issues, and unsafe process conditions with measurement validation diagnostic

 Detect measurement abnormalities and take preventive action

before shutdown is necessary.

 Determine validity of data points that are outside of alarm limits.

 Identify on-scale failures and take action before process efficiency

and safety is compromised.

 Detect abnormally fast process rates of change before alarm state is

reached.

Emerson.com/Rosemount

3

Rosemount 848T Family

High density temperature measurement

Ideal solution for taking multiple measurements in close proximity to
each other such as:

 Bearing temperature on pumps and motors

 Distillation columns

 Furnaces and boilers

 Reactors, storage tanks, and many more

Simplify installation and reduce wiring costs

 Eliminate marshalling

 Less wire routing and fewer terminations

 Faster startups with fewer devices

Access powerful information with new device dashboards

July 2017

 Leverage Human Centered Design practices to create an

intuitive user interface.

 Instantly see status and output of each sensor.

 Direct links to graphical diagnostics and troubleshooting help.

 Drastically lower configuration time.

4

Emerson.com/Rosemount

July 2017

Rosemount 848T Family

Rosemount 848T FOUNDATION Fieldbus Temperature Transmitter

The Rosemount 848T offers a low cost solution for high density measurements. The
transmitter accepts eight independently configurable sensor inputs, and can be
mounted close to the process to improve data quality. F
allows up to 128 temperature measurements to be transmitted on a single H1 Fieldbus
line. Additionally, the transmitter is bus-powered, further reducing the amount of
required wiring to install the device. The robust design has proven itself in thousands of
successful installations. Capabilities include:

 Eight independently configurable inputs, including 2- and 3-wire RTDs,

thermocouples, mV, 2- and 3-wire ohms, and 4–20 mA signals

 Industry first measurement validation diagnostic

 Fieldbus functionality with eight AI blocks, 2 MAI blocks, 4 ISEL Blocks, and backup

LAS capabilities

 600 Vdc isolation and integral transient protection

Specification and selection of product materials, options, or components must be made
by the purchaser of the equipment. See page 28 for more information on material
selection.

Tab le 1. Rosemount 848T FOUNDATION Fieldbus Ordering Table

The starred offerings (★) represent the most common options and should be selected for best delivery. The non-starred offerings are
subject to additional delivery lead time.

Model Product description

848T High Density Temperature Measurement Family

OUNDATION Fieldbus architecture

Transmitter output

F FOUNDATION Fieldbus digital signal (includes AI, MAI, and ISEL function blocks, and Backup Link Active Scheduler)

Rosemount

Product certifications

(1)

Junction
Box required?

I1 ATEX Intrinsic Safety No

I2 INMETRO Intrinsic Safety No

I3 NEPSI Intrinsic Safety No

I4 TIIS Intrinsically Safety (FISCO) Type 'ia’ No

H4 TIIS Intrinsic Safety (FISCO) Type 'ib’ No

(2)

I5

(2)

I6

I7 IECEx Intrinsic Safety No

IA ATEX FISCO Intrinsic Safety No

IB INMETRO FISCO Intrinsic Safety No

IE FM FISCO Intrinsically Safe No

(2)

IF

IG IECEx FISCO (Intrinsic Safety) No

IM Technical Regulations Customs Union (EAC) Intrinsic Safety No

KG FM, CSA, ATEX, and IECEx Intrinsic Safety No

N1 ATEX Type n (enclosure required) Yes

N3 China Type n (enclosure required) Yes

FM Intrinsically Safe No

CSA Intrinsically Safe No

CSA FISCO Intrinsically Safe, Division 2 No

★

★

★

★

★

★

★

★

★

★

★

★

★

★

★

★

Emerson.com/Rosemount

5

Rosemount 848T Family

July 2017

Tab le 1.

Rosemount 848T FOUNDATION Fieldbus Ordering Table

The starred offerings (★) represent the most common options and should be selected for best delivery. The non-starred offerings are
subject to additional delivery lead time.

Rosemount

Product certifications

(1)

Junction
Box required?

N5 FM Class I, Division 2, and Dust Ignitionproof (enclosure required) Yes

N6 CSA Class I, Division 2 No

N7 IECEx Type n (enclosure required) Yes

NC ATEX Type n Component (Ex nA nL) No

(3)

ND ATEX Dust (enclosure required) Yes

NJ IECEx Type n Component (Ex nA nL) No

(3)

NK FM Class I, Division 2 Yes

E6 CSA Explosion-proof, Dust Ignitionproof, Division 2 (JX3 enclosure required) Yes

(4)

IM Technical Regulations Customs Union (EAC) Intrinsic Safety No

IP Korea Intrinsic Safety No

NA No approval No

Input types

S001 RTD, thermocouple, mV, Ohm inputs

(5)

S002

RTDs, thermocouple, mV, Ohm and 4–20 mA inputs

★

★

★

★

★

★

★

★

★

★

★

★

Options (Include with selected model number)

Plantweb advanced diagnostics

D04 Measurement validation diagnostic

Transient protection

T1 Integral transient protector

Mounting bracket

B6 Mounting bracket for 2-in. pipe mounting – SST bracket and bolts

Enclosure options

JP1 Plastic junction box; no entries

JP2 Plastic box, cable glands (9  M20 nickel-plated brass glands for 7.5–11.9 mm unarmored cable)

JP3 Plastic Box, conduit entries (five plugged holes, suitable for installing 1/2-in. NPT fittings)

JA1 Aluminum junction box; no entries

JA2 Aluminum cable glands (9  M20 nickel-plated brass glands for 7.5–11.9 mm unarmored cable)

JA3 Aluminum conduit entries (five plugged holes, suitable for installing 1/2-in. NPT fittings)

JS1 Stainless steel junction box; no entries

JS2 Stainless steel box, cable glands (9 M20 nickel-plated brass glands for 7.5–11.9 mm unarmored cable)

JS3 Stainless steel box, conduit entries (five plugged holes, suitable for installing 1/2-in. NPT fittings)

(6)

JX3

Software configuration

C1 Custom configuration of date, descriptor, message and wireless parameters (requires CDS with order)

Explosion-proof box, conduit entries (four plugged holes, suitable for installing 1/2-in. NPT fittings)

★

★

★

★

★

★

★

★

★

★

★

★

★

★

Line filter

F5 50 Hz line voltage filter

6

★

Emerson.com/Rosemount

July 2017

12 3

2-wire

RTD and

Ohms

3-wire

RTD and

Ohms

(1)

Thermocouples/

Ohms and

millivolts

123 123

2-Wire RTD with

compensation

loop

(2)

123

Tab le 1. Rosemount 848T FOUNDATION Fieldbus Ordering Table

The starred offerings (★) represent the most common options and should be selected for best delivery. The non-starred offerings are
subject to additional delivery lead time.

Rosemount 848T Family

Calibration certificate

Q4 Calibration certificate (3-point calibration)

Shipboard certification

SBS American Bureau of Shipping (ABS) Type Approval

SBV Bureau Veritas (BV) Type Approval

SDN Det Norske Veritas (DNV) Type Approval

SLL Lloyd's Register (LR) Type Approval

Special temperature test

LT Test to –60 °F (–51.1 °C)

Conduit electrical connector

(7)

GE

GM

(7)

M12, 4-pin, male connector (eurofast®)

A size mini, 4-pin, male connector (minifast®)

Extended product warranty

WR3 3-year limited warranty

WR5 5-year limited warranty

★

★

★

★

★

★

★

★

★

Typical model number: 848T F I5 S001 T1 B6 JA2

1. Consult factor y for availability.

2. Available only with S001 option.

3. The Rosemount 848T ordered with component approval is not approved as a stand-alone unit. Additional system certification is required.

4. Enclosure Option JX3 must be ordered with Product Certificatio n Code E6. (O-ring for the JX3 enclosure rated to -20 °C).

5. S002 is only available with Product Certification N5, N6, N1, NC, NK, and NA.

6. JX3 Explosion-proof enclosure rated to -4 °F (-20 °C).

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.

Wiring

Standard configuration

Unless otherwise specified, the transmitter will be shipped as

Figure 1. Rosemount 848T Sensor Wiring Diagram

follows for all eight sensors:

Standard configuration settings

(1)

(1)

(1)

(1)

(1)

Thermocouple Type J

Five seconds

°C

Linear with temperature

60 Hz

Analog input (8)
Multiple analog input (2)
Input selector (4)

(1)

Enabled

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.

Sensor type

Damping

Measurement units

Output

Line voltage filter

Temperature specific blocks Sensor transducer block (1)

FOUNDATION Fieldbus Function
Blocks

Input transient filter

Emerson.com/Rosemount

1. For all eight sensors.

7

Rosemount 848T Family

Specifications

July 2017

Functional specifications

Inputs

Eight independently configurable channels including
combinations of 2- and 3-wire RTDs, thermocouples, mV, and 2­and 3-wire ohm inputs. 4–20 mA inputs using optional
connector(s).

Outputs

Manchester-encoded digital signal that conforms to IEC 61158
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.

Ambient temperature limits

–40 to 185 °F (–40 to 85 °C)

Accuracy

(Pt 100 at reference condition: 20 °C) ±0.30 °C (±0.54 °F); for the
complete list, see “Accuracy” on page 10.

Isolation

 600 Vdc channel to channel isolation

 10 Vdc channel to channel isolation for all operating

conditions with maximum 150 meters (500 feet) of sensor
lead length 18 AWG.

Power supply

Powered over FOUNDATION Fieldbus with standard fieldbus power
supplies. The transmitter operates between 9.0 and 32.0 Vdc,
22 mA maximum. (transmitter power terminals are rated
to 42.4 Vdc.)

Transient protection

The transient protector (option code T1) helps to prevent
damage to the transmitter from transients induced on the loop
wiring by lightning, 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.

Update time

Approximately 1.5 seconds to read all eight inputs

(1)

.

Humidity limits

0–99 percent non-condensing relative humidity

Turn-on time

Performance within specifications is achieved in less than 30
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.

Electromagnetic compatibility compliance testing

 Meets the criteria under European Union Directive

2004/108/EC.

 Meets the criteria under IEC 61326: 2006.

Stability

 ±0.1% of reading or 0.1 °C (0.18 °F), whichever is greater, for

two years for RTDs.

 ±0.1% of reading or 0.1 °C (0.18 °F), whichever is greater, for

one 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

Tested to the following with no effect on performance per IEC
60770-1, 1999.

Frequency acceleration

10-60 Hz 0.21 mm peak displacement

60-2000 Hz 3 g

Backup Link Active Scheduler (LAS)

The transmitter is classified as a device link master, which means
it can function as a LAS if the current link master device fails or is
removed from the segment.

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.

1. Reference conditions are -40 to 60 °C (-40 to 140 °F) with 30 meters (100

feet) of sensor lead length 18 AWG wire.

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Emerson.com/Rosemount

July 2017

Rosemount 848T Family

Software upgrade in the field

Software for the Rosemount 848T with FOUNDATION Fieldbus is
easy to upgrade in the field using the FOUNDATION Fieldbus
Common Device Software Download procedure.

FOUNDATION Fieldbus parameters

Schedule Entries 20

Links 30

Virtual Communications Relationships (VCR) 20

Physical specifications

Conformance to specifications (±3σ [Sigma])

Technology leadership, advanced manufacturing techniques,
and statistical process control ensure specification conformance
to at least ±3

Mounting

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 a 2-in. pipe stand (with option code B6).

Entries for optional junction box

No entry

 Used for custom fittings.

Cable gland

 9  M20 nickel-plated brass glands for 7.5–11.9 mm

unarmored cable

Conduit

 Five plugged 0.86-in. diameter holes suitable for installing

1

/2-in. NPT fittings.

Materials of construction for optional junction box

Junction box type Paint

Aluminum Epoxy Resin

Plastic N/A

Stainless Steel N/A

Aluminum Explosion-proof N/A

σ.

Weight

Weight

Assembly

oz lb kg

Rosemount 848T only 7.5 .47 .208

Aluminum

Plastic

Stainless Steel

Aluminum Explosion-proof 557 34.8 15.5

1. Add 35.2 oz (2.2 lb, 0.998 kg) for nickel-plated brass glands.

(1)

(1)

(1)

78.2 4.89 2.22

58.1 3.68 1.65

77.0 4.81 2.18

Environmental ratings

Type 4X and IP66 with optional junction box. JX3
Explosion-proof enclosure rated to –4 °F (–20 °C).

Function blocks

Analog Input (AI)

 Processes the measurement and makes it available on the

fieldbus segment.

 Allows filtering, alarming, and engineering unit changes.

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.

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.

Emerson.com/Rosemount

9

Rosemount 848T Family

Accuracy

Table 2. Input Options/Accuracy

July 2017

Accuracy over

range(s)

Sensor option

Sensor reference

Input ranges

°C °F °C °F

2- and 3-wire RTDs

Pt 50 ( = 0.00391) GOST 6651-94 –200 to 550 –328 to 1022 ± 0.57 ± 1.03

Pt 100 ( = 0.00391) GOST 6651-94 –200 to 550 –328 to 1022 ± 0.28 ± 0.50

Pt 100 ( = 0.00385) IEC 751;  = 0.00385, 1995 –200 to 850 –328 to 1562 ± 0.30 ± 0.54

Pt 100 ( = 0.003916) JIS 1604, 1981 –200 to 645 –328 to 1193 ± 0.30 ± 0.54

Pt 200 ( = 0.00385) IEC 751;  = 0.00385, 1995 –200 to 850 –328 to 1562 ± 0.54 ± 0.98

Pt 200 ( = 0.003916) JIS 1604;  = 0.003916, 1981 –200 to 645 –328 to 1193 ± 0.54 ± 0.98

Pt 500 IEC 751;  = 0.00385, 1995 –200 to 850 –328 to 1562 ± 0.38 ± 0.68

Pt 1000 IEC 751;  = 0.00385, 1995 –200 to 300 –328 to 572 ± 0.40 ± 0.72

Ni 120 Edison curve no. 7 –70 to 300 –94 to 572 ± 0.30 ± 0.54

Cu 10 Edison copper winding no. 15 –50 to 250 –58 to 482 ± 3.20 ± 5.76

Cu 100 (a=428) GOST 6651-94 –185 to 200 –301 to 392 ± 0.48 ±0.86

Cu 50 (a=428) GOST 6651-94 –185 to 200 –301 to 392 ± 0.96 ±1.73

Cu 100 (a=426) GOST 6651-94 –50 to 200 –58 to 392 ± 0.48 ±0.86

Cu 50 (a=426) GOST 6651-94 –50 to 200 –58 to 392 ± 0.96 ±1.73

Thermocouples—cold junction adds + 0.5 °C to listed accuracy

NIST Type B (Accuracy varies
according to input range)

NIST Type E NIST Monograph 175 –200 to 1000 –328 to 1832 ± 0.40 ± 0.72

NIST Type J NIST Monograph 175 –180 to 760 –292 to 1400 ± 0.70 ± 1.26

NIST Type K NIST Monograph 175 –180 to 1372 –292 to 2501 ± 1.00 ± 1.80

NIST Type N NIST Monograph 175 –200 to 1300 –328 to 2372 ± 1.00 ± 1.80

NIST Type R NIST Monograph 175 0 to 1768 32 to 3214 ± 1.50 ± 2.70

NIST Type S NIST Monograph 175 0 to 1768 32 to 3214 ± 1.40 ± 2.52

NIST Type T NIST Monograph 175 –200 to 400 –328 to 752 ± 0.70 ± 1.26

DIN L DIN 43710 –200 to 900 –328 to 1652 ± 0.70 ± 1.26

DIN U DIN 43710 –200 to 600 –328 to 1112 ± 0.70 ± 1.26

w5Re26/W26Re ASTME 988-96 0 to 2000 32 to 3632 ± 1.60 ± 2.88

Type L GOST R 8.585-2001 –200 to 800 –328 to 1472 ± 0.71 ±1.28

Ter minal tem perature –50 to 85 –58 to 185 ±0.50 ±0.90

Millivolt input—Not approved for use with CSA Option Code I6 –10 to 100 mV ± 0.05 mV

2- and 3-wire Ohm input 0 to 2000 ohms ± 0.90 ohm

4–20 mA (Rosemount)

4–20 mA (NAMUR)

1. Requires the S002 option code.

(1)

(1)

NIST Monograph 175

100 to 300

301 to 1820

212 to 572

573 to 3308

4–20 mA ± 0.01 mA

4–20 mA ± 0.01 mA

± 6.00
± 1.54

± 10.80

± 2.78

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Emerson.com/Rosemount

July 2017

Differential configuration notes

Differential capability exists between any two sensor types.

For all differential configurations, the input range is X to Y where

X = Sensor A minimum - Sensor B max.
Y = Sensor A maximum - Sensor B 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.

Analog sensors 4–20mA

Two types of alarm levels are available with 4–20 mA sensors on
the Rosemount 848T. These types must be ordered with the
S002 option code complete with an analog connector kit. The
alarm levels, accuracy for each type are listed in Table 3.

Table 3. Analog Sensors

Rosemount 848T Family

Sensor option

4–20 mA
(Rosemount standard)

4–20 mA (NAMUR) 3.8 to 20.5 mA ± 0.01 mA

Alarm levels Accuracy

3.9 to 20.8 mA ± 0.01 mA

Emerson.com/Rosemount

11

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 4. Ambient Temperature Effects

NIST type

RTD

Pt 50 (α = 0.00391) 0.004 °C (0.0072 °F) N/A

Pt 100 (α = 0.00391) 0.002 °C (0.0036 °F) N/A

Pt 100 (α = 0.00385) 0.003 °C (0.0054 °F) N/A

Pt 100 (α = 0.003916) 0.003 °C (0.0054 °F) N/A

Pt 200 (α = 0.003916) 0.004 °C (0.0072 °F) N/A

Pt 200 (α = 0.00385) 0.004 °C (0.0072 °F) N/A

Pt 500 0.003 °C (0.0054 °F) N/A

Pt 1000 0.003 °C (0.0054 °F) N/A

Cu 10 0.03 °C (0.054 °F) N/A

Cu 100 (a = 428) 0.002 °C (0.0036 °F) N/A

Cu 50 (a = 428) 0.004 °C (.0072 °F) N/A

Cu 100 (a = 426) 0.002 °C (0.0036 °F) N/A

Accuracy per 1.0 °C (1.8 °F) change in ambient temperature

(1)(2)

Temperature range (°C)

July 2017

Cu 50 (a = 426) 0.004 °C (.0072 °F) N/A

Ni 120 0.003 °C (0.0054 °F) N/A

Thermocouple (R = the value of the reading)

0.014 °C

Type B

Type E 0.005 °C + (0.00043% of R) All

Type J, DIN Type L

Type K

Type N 0.0068 °C + (0.00036% of R) All

Type R, Type S 0.016 °C

Type T, DI N Type U

GOST Type L

Millivolt 0.0005 mV N/A

2- and 3-wire Ohm 0.0084 ohms N/A

0.032 °C - (0.0025% of [R - 300])

0.054 °C - (0.011% of [R - 100])

0.0054 °C + (0.00029% of R)

0.0054 °C + (0.0025% of |R|)

0.0061 °C + (0.00054% of R)

0.0061 °C + (0.0025% of |R|)

0.023 °C - (0.0036% of R)

0.0064 °C

0.0064 °C - (0.0043% of |R|)

0.007 °C

0.007 °C + (0.003% of IRI)

R ≥ 1000

300 ≤ R < 1000

100 ≤ R < 300

R ≥ 0
R < 0

R ≥ 0
R < 0

R ≥ 200
R < 200

R ≥ 0
R < 0

R ≥ 0
R < 0

4–20 mA (Rosemount) 0.0001 mA N/A

4-20 mA (NAMUR) 0.0001 mA N/A

1. Change in ambient is in reference to the calibration temperature of the transmitter (20 °C [68 °F] typical from the factor y).

2. Ambient temperature effect specification valid over minimum temperature span of 28 °C (50 °F).

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Emerson.com/Rosemount

July 2017

0.3020.03

2

+0.30 ° C=

Ambient temperature notes

Examples

When using a Pt 100 (α = 0.00385) sensor input at 30 °C
ambient temperature:

 Ambient temperature effects: 0.003 °C  (30 – 20) = 0.03 °C

 Worst case error: Sensor accuracy + Ambient temperature

effects = 0.30 °C + 0.03 °C = 0.33 °C

 Total probable error:

Rosemount 848T Family

Emerson.com/Rosemount

13

Rosemount 848T Family

Product Certifications

Rev 2.4

July 2017

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

.

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).

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.

USA

I5 FM Intrinsically Safe and Nonincendive

Certificate: 3011568
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;

≤ T

T4(–50 °C
C, D; T4A(–50 °C ≤ Ta ≤ +85 °C);
T5(–50 °C
Rosemount drawing 00848-4404

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.

≤ +60 °C); NI CL I, DIV 2, GP A, B,

a

≤ T

≤ +70 °C) when installed per

a

IE FM FISCO

Certificate: 3011568
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;

≤ T

T4(–50 °C

≤ +60 °C); NI CL I, DIV 2, GP A, B,

a

C, D; T4A(–50 °C ≤ Ta ≤ +85 °C);

≤ T

T5(–50 °C

≤ +70 °C) when installed per

a

Rosemount drawing 00848-4404

N5 Nonincendive and Dust-Ignitionproof

Certificate: 3011568
Standards: FM Class 3600:1998, FM Class 3611:2004,

FM Class 3810:2005, ANSI/ISA 60079-0:2009,

®

250:1991, IEC 60529:2011

NEMA

Markings: NI CL I, DIV 2, GP A, B, C, D; DIP CL II/III, DIV 1,

≤ T

GP E, F, G; T4A(–50 °C

≤ +85 °C);

a

T5(–50 °C ≤ Ta ≤ +70 °C) when installed per

Rosemount drawing 00848-4404; Type 4X

NK Nonincendive

Certificate: 3011568

Standards: FM Class 3600:1998, FM Class 3611:2004,

FM Class 3810:2005, ANSI/ISA 60079-0:2009,
NEMA 250:1991, IEC 60529:2001

Markings: NI CL I, DIV 2, GP A, B, C, D;

≤ T

T4A(–50 °C

≤ +85 °C);

a

T5(–50 °C ≤ Ta ≤ +70 °C) when installed per
Rosemount drawing 00848-4404

Note

Only the N5 and NK are valid with the S002 option.

Table 5. Entity Parameters

FIELDBUS

(input)

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

FISCO

(input)

= 17.5 V

MAX

= 380 mA Ci = 2.1 nF ISC = 4.8 mA

MAX

Nonincendive

(input)

= 42.4 Voc = 12.5 V

MAX

Sensor field

terminal
(output)

14

Emerson.com/Rosemount

July 2017

Rosemount 848T Family

Canada

E6 CSA Explosionproof, Dust-Ignitionproof, Division 2

(JX3 Enclosure Required)
Certificate: 1261865
Standards: 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

Markings: Explosionproof for Class I, Division 1, Groups B,

≤ T

C, and D; T4(–40 °C
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;

≤ T

T3C(–50 ° C

≤ +60 °C) when installed per

a

Rosemount drawing 00848-4405; Conduit
Seal Required

I6 CSA Intrinsically Safe and Division 2

Certificate: 1261865
Standards: CAN/CSA C22.2 No. 0-M91 (R2001),

CAN/CSA C22.2 No. 94-M91,
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

Markings: Intrinsically Safe for Class I, Division 1, Groups

A, B, C, and D; T3C(–50 °C
installed per Rosemount drawing 00848-4405;
Class I, Division 2, Groups A, B, C, D;

≤ T

T3C(–50 °C

≤ +60 °C) when installed per

a

Rosemount drawing 00848-4405

IF CSA FISCO

Certificate: 1261865
Standards: CAN/CSA C22.2 No. 0-M91 (R2001),

CAN/CSA C22.2 No. 94-M91,
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

Markings: Intrinsically Safe for Class I, Division 1, Groups

A, B, C, and D; T3C(–50 °C
installed per Rosemount drawing 00848-4405;
Class I, Division 2, Groups A, B, C, D;

≤ T

T3C(–50 °C

≤ +60 °C) when installed per

a

Rosemount drawing 00848-4405

≤+40 °C) when

a

≤ T

≤ +60 °C) when

a

≤ T

≤ +60 °C) when

a

N6 CSA Division 2 and Dust-Ignitionproof (enclosure required)

Certificate: 1261865
Standards: CAN/CSA C22.2 No. 0-M91 (R2001),

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

Markings: Class I, Division 2, Groups A, B, C, and D;

≤ T

T3C(–50 °C

≤ +60 °C) when installed per

a

Rosemount drawing 00848-4405;
Dust-Ignitionproof for Class II, Division 1,
Groups E, F, and G; Class III; Conduit Seal
Required

Europe

I1 ATEX Intrinsic Safety

Certificate: Baseefa09ATEX0093X
Standards: EN 60079-0:2012, EN60079-11:2012

≤ T

Markings: II 1 G Ex ia IIC T4 Ga (–50 °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 500V
insulation test required by EN 60079-11:2011, clause

6.3.13. This must be taken into account when installing
the equipment.

Table 6. Entity Parameters

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

Sensor field terminal

(output)

IA ATEX FISCO Intrinsic Safety

Certificate: Baseefa09ATEX0093X
Standards: EN 60079-0:2012, EN60079-11:2012
Markings:

II 1 G Ex ia IIC T4 Ga (–50 °C ≤ T

when installed per drawing 00848-4406

≤ +60 °C)

a

≤ +60 °C)

a

Emerson.com/Rosemount

15

Rosemount 848T Family

July 2017

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.

Table 7. Entity Parameters

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)

N1 ATEX Type n (with enclosure)

Certificate: Baseefa09ATEX0095X
Standards: EN 60079-0:2006, EN60079-15:2005

≤ T

Markings: II 3 G Ex nA nL IIC T5(–40 °C

≤ +65 °C)

a

Special Conditions for Safe Use (X):

1. 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%.

2. The electrical circuit is connected directly to earth; this
must be taken into account when installing the apparatus.

NC ATEX Type n (without enclosure)

Certificate: Baseefa09ATEX0094U
Standards: EN 60079-0:2006, EN60079-15:2005

≤ T

Markings: II 3 G Ex nA nL IIC T4(–50 °C

≤ T

T5(–50 °C

≤ +70 °C)

a

≤ +85 °C),

a

Schedule of Limitations (U):

1. The component must be installed in a suitable component
certified enclosure that provides a degree of protection of
at least IP54 and meets the relevant material and
environmental requirements of EN 60079-0:2006 and EN
60079-15:2005.

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%.

3. The electrical circuit is connected directly to earth; this
must be taken into account when installing the apparatus.

Note

The Rosemount 848T may also be installed in an external energy
limited circuit as Ex nL IIC. In this case the following parameters
apply:

Table 8. Entity Parameters

Power/bus

(input)

Ui = 42.4 V Uo = 12.5 V

Ci = 2.1 nF Io = 2.5 mA

Li = 0 Co = 1000 μF

N/A Lo = 1 H

Sensor field terminal

(output)

ND AT EX Dust

Certificate: BAS01ATEX1315X
Standards: EN 50281-1-1:1998
Markings:

II 1 D T90 °C (–40 °C ≤ T

≤ +65 °C); IP66

a

Special Conditions for Safe Use (X):

1. The user must ensure that the maximum rated voltage and
current (42.4 volts, 22 milliamps 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 EN 50020.

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.

International

I7 IECEx Intrinsic Safety

Certificate: IECEx BAS 09.0030X
Standards: IEC 60079-0:2011, IEC60079-11:2011

≤ T

Markings: Ex ia IIC T4 Ga (–50 °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 apparatus.

≤ +60 °C)

a

16

IG IECEx FISCO Intrinsic Safety

Certificate: IECEx BAS 09.0030X
Standards: IEC 60079-0:2011, IEC60079-11:2011
Markings: Ex ia IIC T4 Ga (–50 °C

≤ T

a

Emerson.com/Rosemount

≤ +60 °C)

July 2017

Rosemount 848T Family

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.

Table 9. Entity Parameters

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)

N7 IECEx Type n (with enclosure)

Certificate: IECEx BAS 09.0032X
Standards: IEC 60079-0:2004, IEC 60079-15:2005

≤ T

Markings: Ex nA nL IIC T5(–40 °C

≤ +65 °C)

a

Special Conditions for Safe Use (X):

1. 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%.

2. The electrical circuit is connected directly to earth; this
must be taken into account when installing the apparatus.

NJ IECEx Type n (without enclosure)

Certificate: IECEx BAS 09.0031U
Standards: IEC 60079-0:2004, IEC 60079-15:2005

≤ T

Markings: Ex nA nL IIC T4(–50 °C

≤ T

T5(–50 °C

≤ +70 °C)

a

≤ +85 °C),

a

Schedule of Limitations (U):

1. The component must be installed in a suitable component
certified enclosure that provides a degree of protection of
at least IP54 and meets the relevant material and
environmental requirements of EN 60079-0:2006 and EN
60079-15:2005.

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%.

3. The electrical circuit is connected directly to earth; this
must be taken into account when installing the apparatus.

Brazil

I2 INMETRO Intrinsic Safety

Certificate: UL-BR 16.0086X
S t a n d a r d s : A B N T N B R I E C 6 0 0 7 9 - 0 : 2 0 0 8 + E r r a t a 1 : 2 0 1 1

ABNT NBR IEC 60079-11:2009

≤ T

Markings: Ex ia IIC T4(–50 °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.

Table 10. Entity Parameters

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

IB INMETRO Intrinsic Safety

Certificate: UL-BR 16.0086X
S t a n d a r d s : A B N T N B R I E C 6 0 0 7 9 - 0 : 2 0 0 8 + E r r a t a 1 : 2 0 1 1

ABNT NBR IEC 60079-11:2009

Markings: Ex ia IIC T4(–50 °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.

Table 11. Entity Parameters

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

≤ +60 °C)

a

Sensor field terminal

(output)

≤ T

≤ +60 °C)

a

Sensor field terminal

(output)

Emerson.com/Rosemount

17

Rosemount 848T Family

July 2017

China

I3 NEPSI Intrinsic Safety

Certificate: GYJ16.1205X
Standards: GB3836.1-2010, GB3836.4-2010,

GB3836.20-2010

Markings: Ex ia IIC T4/T5 Ga

Special Conditions for Safe Use (X):

1. Only when temperature transmitter is installed in IP
20(GB4208-2008) housing, can it be used in a hazardous
location. Metallic housing should observe the
requirements of GB3836.1-2010 Clause 8. Non-metallic
housing should observe the requirements of
GB3836.1-2010 Clause 7.3.

2. This apparatus is not capable of withstanding the 500 V
rms insulation test required by Clause 6.4.12 of
GB3836.4-2010.

3. The ambient temperature range of the equipment is

≤ T

T4(–50 °C

4. Parameters:

Output

F 30 300 1.3 2.1 0

F (FISCO) 17.5 380 5.32 2.1 0

Note

Non-FISCO parameters listed above must be derived from a
linear supply with a resistance limited output.

Output Term i na ls

F 1-8 30 300 1.3 2.1 0

5. The product complies to the requirements for FISCO field
devices specified in IEC60079-27: 2008. For the
connection of an intrinsically safe circuit in accordance
FISCO model, FISCO parameters of this product are as
above.

6. The product should be used with Ex-certified associated
apparatus to establish explosion protection system that
can be used in explosive gas atmospheres. Wiring and
terminals should comply with the instruction manual of
the product and associated apparatus.

7. The cables between this product and associated apparatus
should be shielded cables (the cables must have insulated
shield). The shielded cable has to be grounded reliably in
non-hazardous area.

≤ +60 °C).

a

Terminals of power/loop (1-2)

Maximum

output

voltage:

Uo(V) Io(mA) Po(mW) Co(μF) Lo(H)

Maximum

output

current:

Maximum

output
power:

Maximum external

parameters:

Terminals of sensor

Maximum

output

voltage:

Uo(V) Io(mA) Po(mW) Co(μF) Lo(H)

Maximum

output

current:

Maximum

output
power:

Maximum

external

parameters:

8. End users are not permitted to change any component's
insides, but to settle the problem, in conjunction with
manufacturer to avoid damage to the product.

9. During installation, use and maintenance of this product,
observe following standards:

GB3836.13-2013 “Electrical apparatus for explosive gas
atmospheres Part 13: Repair and overhaul for apparatus
used in explosive gas atmospheres”

GB3836.15-2000 “Electrical apparatus for explosive gas

atmospheres Part 15: Electrical installations in hazardous
area (other than mines)”
GB3836.16-2006 “Electrical apparatus for explosive gas
atmospheres Part 16: Inspection and maintenance of
electrical installation (other than mines)”

GB3836.18-2010 “Explosive Atmospheres Part 18:
Intrinsically Safe System”
GB50257-2014 “Code for construction and acceptance of
electric device for explosion atmospheres and fire hazard
electrical equipment installation

N3 NEPSI Type n

Certificate: GYJ17.1008U
Standards: GB3836.1-2010, GB3836.8-2014
Markings: Ex nA nL IIC T4/T5 Gc

Schedule of Limitations (U):

1. This component is not capable of withstanding the 500 V
electrical strength test defined in Clause 6.5.1 of
GB3836.8-2014. The must be taken into account during
installation.

2. This component must be housed in a suitable component
certified enclosure that provides a degree of protection of
at least IP54 and meets the relevant material and
environmental requirements of GB3836.1-2010 and
GB3836.8-2014.

3. 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 the 40%.

4. The ambient temperature range is:

T code Ambient temperature

T4 –50 °C ≤ Ta ≤ +85 °C

T5 –50 °C ≤ Ta ≤ +70 °C

5. Maximum input voltage: 42.4 V.

6. End users are not permitted to change any components
inside, but to settle the problem in conjunction with
manufacturer to avoid damage to the product.

7. During installation, use and maintenance of this product,
observe the following standards:

GB3836.13-2013 “Electrical apparatus for explosive gas
atmospheres Part 13: Repair and overhaul for apparatus

used in explosive gas atmospheres”
GB3836.15-2000 “Electrical apparatus for explosive gas
atmospheres Part 15: Electrical installations in hazardous
area (other than mines)”

18

Emerson.com/Rosemount

July 2017

Rosemount 848T Family

GB3836.16-2006 “Electrical apparatus for explosive gas
atmospheres Part 16: Inspection and maintenance of
electrical installation (other than mines)”

GB50257-2014 “Code for construction and acceptance of

electric device for explosion atmospheres and fire hazard
electrical equipment installation engineering”

Japan

I4 TIIS FISCO Intrinsic Safety (ia)

Certificate: TC19713
Markings: ia IIC T4

TIIS Wi-HART Intrinsic Safety (ia)
Certificate: TC19154
Markings: ia IIC T4

H4 TIIS FISCO Intrinsic Safety (ib)

Certificate: TC20737
Markings: ia IIC T4

Korea

IP Korea Intrinsic Safety

Certificate: 10-KB4BO-0088X
Markings: Ex ia IIC T4 (–50 °C ≤ T

≤ +60 °C)

a

EAC - Belarus, Kazakhstan, Russia

IM Technical Regulation Customs Union (EAC) Intrinsic Safety

Standards: GOST R IEC 60079-0-2011,

GOST R IEC 60079-11-2010

Markings: [F

OUNDATION Fieldbus]: 0Ex ia IIC T4 Ga X

Special Condition for Safe Use (X):

1. See certificate for special conditions.

Combinations

Certificate: IECEx FMG 13.0032X
Standards: IEC 60079-0:2011, IEC 60079-1:2007,

IEC 60079-7:2006-2007

Markings: Ex de IIC Gb

Special Conditions for Safe Use (X):

1. When the thread adapter or blanking plug is used with an
enclosure 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

1

Metric thread forms. G

/2 and PG 13.5 thread forms are
only acceptable for existing (legacy) equipment
installations.

Table 12. Conduit Plug Thread Sizes

Thread Identification mark

M20  1.5 M20

1

/2 - 14 NPT

1

/2 NPT

G1/2 G1/2

Table 13. Thread Adapter Thread Sizes

Male thread Identification mark

M20 1.5 – 6H M20

1

/2 –14 NPT

3

/4–14 NPT

1

/2 –14 NPT

3

/4–14 NPT

Female thread Identification mark

M20  1.5 – 6H M20

1

/2–14 NPT

1

/2 –14 NPT

PG 13.5 PG 13.5

KG Combination of I1/IA, I5/IE, I6/IF, and I7/IG

Conduit Plugs and Adapters

ATEX Flameproof and Increased Safety
Certificate: FM13ATEX0076X
Standards: EN 60079-0:2012, EN 60079-1:2007,

IEC 60079-7:2007

Markings: 2 G Ex de IIC Gb

Special Conditions for Safe Use (X):

1. When the thread adapter or blanking plug is used with an
enclosure 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. G1/2 and PG 13.5 thread forms are
only acceptable for existing (legacy) equipment
installations.

IECEx Flameproof and Increased Safety

Emerson.com/Rosemount

19

Rosemount 848T Family

Additional Certifications

SBS American Bureau of Shipping (ABS) Type Approval

Certificate: 011-HS771994C-1-PDA
ABS Rules: 2013 Steel Vessels Rules 1-1-4/7.7,

1-1-Appendix 3, 4-8-3/1.7, 4-8-3/13.1

SBV Bureau Veritas (BV) Type Approval

Certificate: 26325/A3 BV
Requirements: Bureau Veritas Rules for the Classification of

Steel Ships

Application: Class notations: AUT-UMS, AUT-CCS,

AUT-PORT and AUT-IMS

SDN Det Norske Veritas (DNV) Type Approval

Certificate: A-14187
Intended Use: Det Norske Veritas’ Rules for Classification of

Ships, High Speed & Light Craft and Det
Norske Veritas’ Offshore Standards

Application:

Location classes

Tem p er at u re D

Humidity B

Vibration A

EMC A

Enclosure

B/IP66: Al

C/IP66: SST

July 2017

SLL Lloyds Register (LR) Type Approval

Certificate: 11/60002 (E2)
Application: Environmental categories ENV1, ENV2, ENV2

and ENV5

20

Emerson.com/Rosemount

July 2017

A

6.7 (170)

B

3.7 (93)

C

1.7

(43)

10.24 (260)

A

1.57 (40)

2.44 (62)

1.73 (44)

2.28 (58)

1.10 (28)

3.78 (96)

7.84 (199.2)

6.30 (160)

4.41 (112)

Top view

Front view

3-D view

Side view

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.

Figure 2. Rosemount 848T

Top view 3-D view Side view

A. Security switch
B. Simulation switch
C. Removable wiring connection
Dimensions are in inches (millimeters).

Figure 3. Aluminum/Plastic Junction Box—Cable Gland (Option Codes JA2 and JP2)

A. Ground screw
Dimensions are in inches (millimeters).

Emerson.com/Rosemount

21

Rosemount 848T Family

9.91 (231)

Top view

7.7 (196)

A

3-D view

1.8 (46)

9.14 (232.2)

Front view

Side view

1.1 (28)

1.73 (44)

2.4 (62)

1.2 (30)

1.8 (47)

4.0 (102)

7.72 (196)

6.61 (168)

10.2 (260)

Top view 3-D view

157 (40)

2.44 (62)

3.5 (89)

1.7 (42)

10.2 (260)

Front view

Side view

Figure 4. Stainless Steel Junction Box—Cable Gland (Option Code JS2)

July 2017

A. Ground screw
Dimensions are in inches (millimeters).

Figure 5. Aluminum/Plastic Junction Box—Conduit Entry (Option Codes JA3 and JP3)

A. Five plugged 0.86-in. diameter holes suitable for installing 1/2-in. NPT fittings
Dimensions are in inches (millimeters).

22

Emerson.com/Rosemount

July 2017

9.1 (231)

Top view

7.7 (196)

3-D view

1.4 (35)

1.2 (30)

Front view

Side view

1.1 (27)

2.8 (70)

4.0 (102)

4.0 (102)

1.8 (4.7)

2.4 (62)

1.6 (42)

A

B

Figure 6. Stainless Steel Junction Box—Conduit Entry (Option Code JS3)

Rosemount 848T Family

A. Ground screw
B. Five Plugged 0.86-in. diameter holes suitable for installing
Dimensions are in inches (millimeters).

1

/2-in. NPT fittings

Emerson.com/Rosemount

23

Rosemount 848T Family

10.2 (260)

5.1 (130)

6.6 (167)

fully assembled

4.7 (119)

Mounting options

Figure 7. Aluminum/Plastic Junction Box (Styles JA and JP)

Front view Side view

Dimensions are in inches (millimeters).

Figure 8. Stainless Steel Junction Box (Style JS)

Front view Side view

July 2017

7.5 (190)

fully assembled

Dimensions are in inches (millimeters).

Figure 9. Mounted on Vertical Pipe

Aluminum/plastic junction box Stainless steel junction box

24

Emerson.com/Rosemount

July 2017

Rosemount 848T Family

Rosemount 848T Wireless Temperature Transmitter

The Rosemount 848T is the premier choice for Wireless High Density measurements.
Four independently configurable inputs are transmitted through WirelessHART. Costs
per point are dramatically reduced through the use of smart wireless networks, with
the same reliability and security of wired solutions. Additionally, the field hardened
enclosure is suitable for installation in IS areas. Capabilities include:

Four independently configurable inputs, including 2-, 3- and 4-wire RTDs,
thermocouples, 0-1000mV and 0-10V, 2-, 3- and 4-wire ohms, and 4-20 mA signals.

 Intrinsically safe, long lasting power module, which utilizes Emerson’s SmartPower

Tec hn o lo gy

 Configurable high and low alerts to improve process performance

 Easy to use Device Dashboard, used to configure, monitor, and troubleshoot the

Rosemount 848T

Specification and selection of product materials, options, or components must be
made by the purchaser of the equipment.
See page 28 for more information on Material Selection.

Table 14. Rosemount 848T Wireless Transmitter Ordering Table

The starred offerings (★) represent the most common options and should be selected for best delivery. The non-starred offerings are
subject to additional delivery lead time.

Model Product description

848T High density temperature measurement family

Transmitter output

X Wireless

Product certifications

I1 ATEX Intrinsic Safety

I2 INMETRO Intrinsic Safety

I3 NEPSI Intrinsic Safety

I4 TIIS Intrinsic Safety

I5 FM Intrinsically Safe

I6 CSA Intrinsically Safe

I7 IECEx Intrinsic Safety

N5 FM Class I, Division 2, and Dust Ignition-proof (enclosure required)

N6 CSA Class I, Division 2

IM Technical Regulations Customs Union (EAC) Intrinsic Safety

NA No Approval

Input type

★

★

★

★

★

★

★

★

★

★

★

★

S001 RTD, thermocouple, mV, Ohm Inputs

(1)

S002

RTD, thermocouple, mV, Ohm and 4–20 mA inputs

S003 RTD, thermocouple, Ohm, mV, and 2 - dual channel voltage adapters

(2)

S004

RTD, thermocouple, Ohm, mV, and 1 - dual channel voltage adapters

Emerson.com/Rosemount

★

★

★

★

25

Rosemount 848T Family

July 2017

Table 14. Rosemount 848T Wireless Transmitter Ordering Table

The starred offerings (★) represent the most common options and should be selected for best delivery. The non-starred offerings are
subject to additional delivery lead time.

Options (include with selected model number)

Wireless burst rate, operating frequency and protocol

(3)

WA3 User configurable update rate, 2.4 GHz DSSS, IEC 62591 (WirelessHART)

Omni-directional wireless antenna and SmartPower

WK1 External antenna, adapter for black power module (I.S. power module sold separately)

(4)

(5)

WM1 Extended range, external antenna, adapter for black power module (I.S. power module sold separately)

Mounting bracket

B6 Mounting bracket for 2-in. pipe mounting - SST bracket and bolts

Enclosure options

(6)

HA1 Aluminum with cable glands (5  1/2-in. NPT for 7.5 - 11.9 mm)

HA2 Aluminum with conduit entries (5 plugged holes, suitable for installing 1/2-in. NPT fittings)

Software configuration

C1 Custom configuration of date, descriptor, message and wireless parameters (required CDS with order)

Line filter

F5 50 Hz line voltage filter

5-point calibration

★

★

(5)

★

★

★

★

★

★

C4 5-point calibration (requires Q4 option code to generate a calibration certificate)

Calibration certificate

Q4 Calibration certificate (3-point calibration)

Shipboard certification

SBV Bureau Veritas (BV) type approval

Extended product warranty

WR3 3-year limited warranty

WR5 5-year limited warranty

Typical model number: 848T X I5 S001 WA3 WK1 B6 HA1

1. Only available with product certifications NA and N5. Stable resistors included.

2. Dual channel voltage adapter will be installed on channels 1 and 2.

3. Required for wireless.

4. WK1 or WM1 required for wireless.

5. Black power module must be shipped separately, order Model 701PBKKF or Part# 00753-9220-0001.

6. HA1 or HA2 required for wireless.

★

★

★

★

26

Emerson.com/Rosemount

July 2017

WirelessHART... the Industry Standard

Self-organizing, adaptive mesh routing

 No wireless expertise required, devices automatically find the

best communication paths.

 Network continuously monitors paths for degradation and

repairs itself.

 Adaptive behavior provides reliable, hands-off operation and

simplifies network deployments, expansion and
reconfiguration.

 Supports both star and mesh topologies.

Industry standard radio with channel hopping

 Standard IEEE 802.15.4 radios

 2.4 GHz ISM band sliced into 16 radio-channels.

 Continually “hop” across channels to avoid interference and

increase reliability.

 Frequency hopping spread spectrum (FHSS) technology

delivers high reliability in challenging radio environment.

Rosemount 848T Family

Self-healing network

 If an obstruction is introduced into the mesh network, devices

will automatically find the best alternate communication
path.

 This allows the network to instantly change to the new path

without any loss in data.

Seamless integration to existing hosts

 Transparent and seamless integration.

 Same control system applications.

 Gateways connect using industry protocols.

Emerson.com/Rosemount

27

Rosemount 848T Family

Specifications

July 2017

Functional specifications

Input

Four independently configurable input channels that supports
Thermocouple, RTD, mV, 0-10 V, ohm, and 4–20 mA, input
types. See “Accura cy” on page 30 for sensor options.

Output

IEC 62591 (WirelessHART), 2.4 GHz DSSS

Ambient temperature limits

–40 to 85 °C (–40 to 185 °F)

Humidity limits

0–99% non-condensing relative humidity

Update rate

User selectable, 4 sec to 60 min.

Accuracy

(Pt 100 @ reference condition: 20 °C)
±0.30 °C (±0.54 °F)
For the complete list see

Isolation

Isolation between all sensor channels is rated to 10 Vdc over all
operating conditions. No damage will occur to the device with
up to 250 Vdc between any sensor channels.

Alerts

Message sent when open or short sensor is detected

Electromagnetic Compatibility (EMC)

 Meets the criteria under European Union Directive

2004/108/EC

 Meets all relevant requirements of EN 61326

“Accurac y” on p age 30.

Self calibration

The analog-to-digital measurement circuitry automatically
self-calibrates for each temperature update by comparing the
dynamic measurement to extremely stable and accurate
internal reference elements.

Vibration effect

Tested to the following with no effect on performance per IEC
60770-1, 1999.

Frequency acceleration

10-60 Hz 0.21 mm peak displacement

60-2000 Hz 3 g

Physical specifications

Material selection

Emerson provides a variety of Rosemount product with various
product options and configurations including materials of
construction that can be expected to perform well in a wide
range of applications. The Rosemount product information
presented is intended as a guide for the purchaser to make an
appropriate selection for the application. It is the purchaser’s
sole responsibility to make a careful analysis of all process
parameters (such as all chemical components, temperature,
pressure, flow rate, abrasives, contaminants, etc.), when
specifying product, materials, options and components for the
particular application. Emerson is not in a position to evaluate or
guarantee the compatibility of the process fluid or other process
parameters with the product, options, configuration or
materials of construction selected.

Conformance to specifications (±3σ [Sigma])

Technology leadership, advanced manufacturing techniques,
and statistical process control ensure specification conformance
to at least ±3σ.

Transmitter stability

 ±0.15% of reading or 0.15 °C (0.27 °F), whichever is greater, for

2 years for RTDs

 ±0.15% of reading or 0.15 °C (0.27 °F), whichever is greater, for

1 year for thermocouples

1. Reference conditions are 68 °F (20 °C), and routing data for three additional network devices.
Note: Continuous exposure to ambient temperature limits (-40 °F or 185 °F) (-40 °C or 85 °C) may reduce specified life to less than 20 percent.

Electrical connections

Power module

The Emerson SmartPower Power Module is field replaceable,
featuring keyed connections that eliminate the risk of incorrect
installation. The power module is an Intrinsically Safe solution,
containing the Lithium-thionyl chloride with a polybutadine
terephthalate (PBT) enclosure. The 848T Wireless has a power
module life time rating of six years with a one-minute update
rate, at reference conditions.

28

(1)

Emerson.com/Rosemount

July 2017

Rosemount 848T Family

Sensor terminals

Sensor terminals permanently fixed to terminal block

Field Communicator connections

Communication terminals

Clips permanently fixed to terminal block

Materials of construction

Enclosure

Housing - Low-copper aluminum
Paint - Polyurethane
Cover O-ring - Silicone

Terminal Block and Power Module

PBT

Antenna

PBT/Polycarbonate (PC) integrated omni-directional antenna

Mounting

Transmitter can be panel mounted, or be mounted onto a 2-in.
pipe stand (with option code B6). Sensors must be remotely
mounted, as transmitter conduit entries are not designed for
direct sensor mounting.

Optional voltage adapter

The Rosemount 848T Wireless voltage adapter allows voltage
measurement from 0-10 volts. For this capability, one or two
adapters are required. Each adapter accommodates 2 voltage
inputs, and can be installed interchangeably on inputs 1 and 2 or
3 and 4.

The divider is ordered using option codes S003 or S004, and can
also be purchased as a spare part.

Weight

Rosemount 848T Wireless - 4.75 lb. (2.15 kg)

Enclosure ratings (Rosemount 848T Wireless)

Housing option codes HA1 or HA2 are Type 4x and IP66.

Sensor connections

Figure 10. Rosemount 848T Wireless Sensor Connections

Diagram

1
2
3
4
5

1
2
3
4
5

2-wire RTD and  3-wire RTD and 

1
2
3
4
5

1
2
3
4
5

+

-

4-wire RTD and  Thermocouple and mV

Emerson.com/Rosemount

29

Rosemount 848T Family

Accuracy

July 2017

Sensor option

Sensor reference

°C °F °C °F

2-, 3-, and 4-wire RTDs

Input ranges Accuracy over range(s)

Pt 50 ( = 0.00391) GOST 6651-94 –200 to 550 –328 to 1022 ± 0.57 ± 1.03

Pt 100 ( = 0.00391) GOST 6651-94 –200 to 550 –328 to 1022 ± 0.28 ± 0.50

Pt 100 ( = 0.00385) IEC 751;  = 0.00385, 1995 –200 to 850 –328 to 1562 ± 0.30 ± 0.54

Pt 100 ( = 0.003916) JIS 1604, 1981 –200 to 645 –328 to 1193 ± 0.30 ± 0.54

Pt 200 ( = 0.00385) IEC 751;  = 0.00385, 1995 –200 to 850 –328 to 1562 ± 0.54 ± 0.98

PT 200 ( = 0.003916) JIS 1604, 1981 ( = 0.003916) –200 to 645 –328 to 1193 ± 0.54 ± 0.98

Pt 500 ( = 0.00385) IEC 751;  = 0.00385, 1995 –200 to 850 –328 to 1562 ± 0.38 ± 0.68

Pt 1000 ( = 0.00385)s IEC 751;  = 0.00385, 1995 –200 to 300 –328 to 572 ± 0.40 ± 0.72

Ni 120 Edison Curve No. 7 –70 to 300 –94 to 572 ± 0.30 ± 0.54

Cu 10 Edison Copper Winding No. 15 –50 to 250 –58 to 482 ± 3.20 ± 5.76

Cu 100 (a=428) GOST 6651-94 –185 to 200 –301 to 392 ± 0.48 ±0.86

Cu 50 (a=428) GOST 6651-94 –185 to 200 –301 to 392 ± 0.96 ±1.73

Cu 100 (a=426) GOST 6651-94 –50 to 200 –58 to 392 ± 0.48 ±0.86

Cu 50 (a=426) GOST 6651-94 –50 to 200 –58 to 392 ± 0.96 ±1.73

Thermocouples—cold junction adds + 0.5 °C to listed accuracy

NIST Type B (Accuracy varies
according to input range)

NIST Type E NIST Monograph 175 –200 to 1000 –328 to 1832 ± 0.40 ± 0.72

NIST Type J NIST Monograph 175 –180 to 760 –292 to 1400 ± 0.70 ± 1.26

NIST Type K NIST Monograph 175 –180 to 1372 –292 to 2502 ± 1.00 ± 1.80

NIST Type N NIST Monograph 175 –200 to 1300 –328 to 2372 ± 1.00 ± 1.80

NIST Type R NIST Monograph 175 0 to 1768 32 to 3214 ± 1.50 ± 2.70

NIST Type S NIST Monograph 175 0 to 1768 32 to 3214 ± 1.40 ± 2.52

NIST Type T NIST Monograph 175 –200 to 400 –328 to 752 ± 0.70 ± 1.26

DIN L DIN 43710 –200 to 900 –328 to 1652 ± 0.70 ± 1.26

DIN U DIN 43710 –200 to 600 –328 to 1112 ± 0.70 ± 1.26

w5Re/W26Re ASTME 988-96 0 to 2000 32 to 3632 ± 1.60 ± 2.88

Type L GOST R.8.585-2001 –200 to 800 –328 to 1472 ±0.71 ±1.28

Ter minal Temp erature –50 to 85 –58 to 185 ±3.50 ±6.30

NIST Monograph 175

100 to 300

301 to 1820

212 to 572

573 to 3308

± 6.00
± 1.54

± 10.80

± 2.78

Input units

Ohm Input 0 to 2000 ohms ±0.90 ohms

Millivolt Input –10 to 100 mV ±0.05 mV

1000 mV input –10 to 1000 mV ±1.0 mV

1000 mV input 0 to 10 V

4–20 mA (Rosemount)

4–20 mA (NAMUR)

1. Requires the S002 option code.

(1)

(1)

4–20 mA ±0.01 mA

4–20 mA ±0.01 mA

30

greater of ±10 mV or

0.2% of span

Emerson.com/Rosemount

July 2017

Analog sensors 4–20mA

Two types of alarm levels are available with 4-20 mA sensors on
the Rosemount 848T. These types must be ordered with the
S002 option code complete with an analog connector kit. The
alarm levels, accuracy for each type are listed in Table 1 5.

Table 15. Analog Sensors

Rosemount 848T Family

Sensor option

4–20 mA
(Rosemount Standard)

4–20 mA (NAMUR) 3.8 to 20.5 mA ± 0.01 mA

Alarm levels Accuracy

3.9 to 20.8 mA ± 0.01 mA

Emerson.com/Rosemount

31

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).

NIST type

RTD

Pt 50 (α = 0.003910) 0.004 °C (0.0072 °F) N/A

Pt 100 (α = 0.00391) 0.002 °C (0.0036 °F) N/A

Pt 100 (α = 0.00385) 0.003 °C (0.0054 °F) N/A

Pt 100 (α = 0.003916) 0.003 °C (0.0054 °F) N/A

Pt 200 (α = 0.00385) 0.004 °C (0.0072 °F) N/A

PT 200 (α = 0.003916) 0.004 °C (0.0072 °F) N/A

Cu 10 0.03 °C (0.054 °F) N/A

Pt 500 0.003 °C (0.0054 °F) N/A

Pt 1000 0.003 °C (0.0054 °F) N/A

Cu 100 (a=428) 0.002 °C (0.0036 °F) N/A

Cu 50 (a=428) 0.004 °C (.0072 °F) N/A

Cu 100 (a=426) 0.002 °C (0.0036 °F) N/A

Cu 50 (a=426) 0.004 °C (.0072 °F) N/A

Ni 120 0.003 °C (0.0054 °F) N/A

Accuracy per 1.0 °C (1.8 °F) change in ambient

temperature

(1)(2)

Thermocouple (R = the value of the reading)

0.014 °C

Type B

Type E 0.005 °C + (0.00043% of R) All

Type J, Din Type L

Type K

Type N 0.0068 °C + (0.00036% of R) All

Type R, Type S 0.016 °C

Type T, DI N Type U

GOST Type L

0.032 °C - (0.0025% of [R - 300])

0.054 °C - (0.011% of [R - 100])

0.0054 °C + (0.00029% of R)

0.0054 °C + (0.0025% of |R|)

0.0061 °C + (0.00054% of R)

0.0061 °C + (0.0025% of |R|)

0.023 °C - (0.0036% of R)

0.0064 °C

0.0064 °C - (0.0043% of |R|)

0.007 °C

0.007 °C + (0.003% of IRI)

Input units

Ohm input 0.0084 ohms N/A

100 mV Input 0.0005 mV N/A

1000 mV Input 0.005 mV N/A

4–20 mA (Rosemount) 0.0001 mA N/A

4–20 mA (NAMUR) 0.0001 mA N/A

Temperature range (°C)

R ≥ 1000

300 ≤ R < 1000

100 ≤ R < 300

R ≥ 0
R < 0

R ≥ 0
R < 0

R ≥ 200
R < 200

R ≥ 0
R < 0

R ≥ 0
R < 0

July 2017

1. Change in ambient is in reference to the calibration temperature of the transmitter (20 °C [68 °F] typical from the factor y).

2. Ambient temperature effect specification valid over minimum temperature span of 28 °C (50 °F).

32

Emerson.com/Rosemount

July 2017

0.3020.03

2

+0.30 ° C=

Ambient temperature notes

Examples

When using a Pt 100 (α = 0.00385) sensor input at 30 °C
ambient temperature, temperature effects would be:

 Ambient temperature effects: 0.003 °C (30 - 20) = 0.03 °C

 Worst case error: Sensor accuracy + Ambient temperature

effects = 0.30 °C + 0.03 °C = 0.33 °C

 Total probable error:

Rosemount 848T Family

Emerson.com/Rosemount

33

Rosemount 848T Family

Product Certifications

Rev 1.4

July 2017

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.

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.

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

.

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).

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.

USA

I5 FM Intrinsically Safe

Certificate: 303437
Standards: FM Class 3600:1998, FM Class 3610:2010, FM

Class 3810:2005, NEMA-250:1997,
ANSI/ISA-60079-0:2009,
ANSI/ISA-60079-11:2009, IEC 60529:2004

Markings: IS CL I, DIV 1, GP A, B, C, D; NI CL I, DIV 2, GP A,

B, C, D; IS CL I, Zone 0, AEx ia IIC T4(–50 °C

≤ +70 °C), when installed per Rosemount

drawing 00849-1000; Type 4X; IP66
See Table 16 on page -36 at the end of the
Product Certifications section for Entity
Parameters.

N5 FM Class I, Division 2, and Dust Ignition-proof

Certificate: 3034378
Standards: FM Class 3600:1998, FM Class 3610:2010,

FM Class 3810:2005, NEMA-250:1997,
IEC 60529:2004

Markings: NI CL I, DIV 2, GP A, B, C, D; T4(–50 °C

+70 °C); DIP CL II/III DIV 1, GP E, F, G; –50 °C ≤ Ta

≤+85 °C; when installed per Rosemount

drawing 00849-1000; Type 4X; IP66

Canada

I6 CSA Intrinsically Safe

Certificate: 1261865
Standards: CSA Std. C22.2 No. 25-1966, CSA Std. C22.2

No. 30-M1986, CAN/CSA C22.2 No. 94-M91,
CSA C22.2 No. 142-M1987, CAN/CSA C22.2
No. 157-92, CSA Std. C22.2 No. 213-M1987,
CSA Std. C22.2 No 60529:05

Markings: Intrinsically Safe for CL I, DIV 1 GP A, B, C, D;

Suitable for CL I DIV 2 GP A, B, C, D; when
installed per Rosemount drawing 00849-1016;
T3C; Type 4X, IP66
See Table 16 on page -36 at the end of the
Product Certifications section for Entity
Parameters.

N6 CSA Class I, Division 2

Certificate: 1261865
Standards: CSA Std. C22.2 No. 25-1966, CSA Std. C22.2

No. 30-M1986, CAN/CSA C22.2 No. 94-M91,
CSA C22.2 No. 142-M1987, CSA Std. C22.2 No.
213-M1987, CSA Std. C22.2 No 60529:05;

Markings: Suitable for CL I DIV 2 GP A, B, C, D; T3C; when

installed per Rosemount drawing 00849-1016;
Type 4X, IP66

Europe

I1 ATEX Intrinsic Safety

Certificate: Baseefa09ATEX0022X
Standards: EN 60079-0:2012, EN 60079-11:2012;
Markings: II 1 G Ex ia IIC T4/T5 Ga,

≤ T

T4(–60 °C
See Table 16 on page -36 at the end of the
product certifications section for entity
parameters.

≤+70 °C),T5(–60 °C ≤ Ta ≤ +40 °C);

a

≤ T

≤ T

a

≤

a

34

Emerson.com/Rosemount

July 2017

Rosemount 848T Family

Special Conditions for Safe Use (X):

1. The surface resistivity of the antenna is greater than 1 GΩ.
To avoid electrostatic charge build-up, it must not be
rubbed or cleaned with solvents or a dry cloth.

2. The Model 701PBKKF Power Module or Intelligent Power
Module 71008 may be replaced in a hazardous area. The
Power Modules have surface resistivity greater than 1 GΩ
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.

3. The enclosure may be made from aluminum alloy and
given a protective polyurethane paint finish; however, care
should be taken to protect it from impact or abrasion
when located in a zone 0 area.

International

I7 IECEx Intrinsic Safety

Certificate: IECEx BAS 09.0004X
Standards: IEC 60079-0:2011, IEC 60079-11:2011;

≤ T

Markings: Ex ia IIC T4/T5 Ga, T4(–60 °C

T5(–60 °C ≤ Ta ≤ +40 °C);
See Table 16 on page -36 at the end of the
Product Certifications section for Entity
Parameters.

Special Conditions for Safe Use (X):

1. The surface resistivity of the antenna is greater than 1 GΩ.
To avoid electrostatic charge build-up, it must not be
rubbed or cleaned with solvents or a dry cloth.

2. The Model 701PBKKF Power Module or Intelligent Power
Module 71008 may be replaced in a hazardous area. The
Power Modules have surface resistivity greater than 1 GΩ
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.

3. The enclosure may be made from aluminum allow with a
protective polyurethane paint finish; however, care should
be taken to protect it from impact or abrasion when
located in Zone 0.

≤ +70 °C),

a

Brazil

I2 INMETRO Intrinsic Safety

Certificate: UL-BR 15.0034X
Standards: ABNT NBR IEC 60079-0:2008 + Corrigendum

1:2011, ABNT NBR IEC 60079-11:2009

≤ T

Markings: Ex ia IIC T4/T5, T4(–60 °C

(–60 °C

≤ T

≤ +40 °C)
See Table 16 on page -36 at the end of the
product certifications section for entity
parameters.

a

≤ +70 °C), T5

a

Special Conditions for Safe Use (X):

1. The surface resistance of the antenna is greater than 1GΩ.
To avoid electrostatic charge build-up, it must not be
rubbed or cleaned with solvents or a dry cloth.

2. The Model 701PBKKF Power Module may be replaced in a
hazardous area. The power module has surface resistance
greater than 1GΩ 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.

3. The 848T enclosure may be made of aluminum alloy and
given a protective polyurethane paint finish; however, care
should be taken to protect it from impact or abrasion if
located in areas that requires EPL Ga (Zone 0).

China

I3 NEPSI Intrinsic Safety

Certificate: GYJ16.1205X
Markings: Ex ia IIC T4/T5 Ga, T4(–60 °C ≤ Ta ≤ +70 °C),

≤ T

T5(–60 °C
See Table 16 on page -36 at the end of the
Product Certifications section for Entity
Parameters.

Special Conditions for Safe Use (X):

1. The surface resistance of the antenna is greater than 1 GΩ.
To avoid electrostatic charge build-up, it must not be
rubbed or cleaned with solvents or a dry cloth.

2. The power module may be replaced in a hazardous area.
The power module has surface resistance greater than
1 GΩ 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.

3. Manufacture-provided battery pack made up of two
Tadiran TL-5920 Lithium Thionyl-Chloride primary cells
should be used.

4. The product should be used with Ex-certified associated
apparatus to establish explosion protection system that
can be used in explosive gas atmospheres. Wiring and
terminals should comply with the instruction manual of
the product and associated apparatus.

5. The cables between this product and associated apparatus
should be shielded cables (the cables must have insulated
shield). The shield has to be grounded reliably in
non-hazardous area.

6. End user is not permitted to change any components
inside, but to settle the problem in conjunction with
manufacturer to avoid damage to the product.

≤ +40 °C)

a

Emerson.com/Rosemount

35

Rosemount 848T Family

7. When installation, use and maintenance of this product,
observe following standards:
GB3836.13-2013 “Electrical apparatus for explosive gas
atmospheres Part 13: Repair and overhaul for apparatus
used in explosive gas atmospheres”
GB3836.15-2000 “Electrical apparatus for explosive gas
atmospheres Part 15: Electrical installations in hazardous
area (other than mines)”
GB3836.16-2006 “Electrical apparatus for explosive gas
atmospheres Part 16: Inspection and maintenance of
electrical installation (other than mines)”
GB3836.18-2010 " Explosive Atmospheres Part 18:
Intrinsically Safe System
GB50257-2014 “Code for construction and acceptance of
electric device for explosion atmospheres and fire hazard
electrical equipment installation engineering”

EAC – Belarus, Kazakhstan, Russia

IM Technical Regulations Customs Union (EAC) Intrinsic Safety

≤ T

Markings: 0Ex ia IIC T4, T5 Ga X, T4(–60 °C

T5(–60 °C ≤ Ta ≤ +40 °C); IP66/IP67
See Table 16 on page -36 at the end of the
Product Certifications section for Entity
Parameters.

≤ +70 °C),

a

July 2017

Japan

I4 TIIS Intrinsic Safety

Certificate: TC19154

≤ T

Markings: Ex ia IIC T4, T4(–20 °C

See Table 16 on page -36 at the end of the
Product Certifications section for Entity
Parameters.

≤ +60 °C)

a

Additional Certifications

SBV Bureau Veritas (BV) Type Approval

Certificate: 26325/A3 BV
Requirements: Bureau Veritas Rules for the Classification of

Steel Ships

Table 16. Entity Parameters

ATE X/ IE CEx /

NEPSI/EAC/

TIIS/INMETRO

Voltage Uo (V)

Current Io (mA)

Power Po (mW)

Capacitance Co (μF)

FM CSA

6.51 6.6 6.6

3.12 3.2 3.2

5.1 20.4 5.3

22 22 22

Inductance Lo (H)

36

11 1

Emerson.com/Rosemount

July 2017

6.81

(173)

3.46

(87,8)

3.978
(101)

Dimensional drawings

Figure 11. Rosemount 848T Wireless

5.55

(141,1)

2.20

(55,8)

7.0

(177,8)

Rosemount 848T Family

10.22

(259,7)

Dimensions are in inches (millimeters).

3.00

(76,3)

6.38

(162)

Emerson.com/Rosemount

37

Rosemount 848T Family

00813-0100-4697, Rev PA

Global Headquarters

Emerson Automation Solutions

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[phone]
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[phone]
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Product Data Sheet

July 2017

Europe Regional Office

Emerson Automation Solutions Europe GmbH

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CH 6340 Baar
Switzerland

[phone]
[phone]
[e-mail]

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[phone]
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[e-mail]

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Emerson FZE P.O. Box 17033
Jebel Ali Free Zone - South 2
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Conditions of Sale page.

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