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Emerson Rosemount 848T FOUNDATION Quick Start Manual
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Emerson Rosemount 848T FOUNDATION Quick Start Manual

Emerson Rosemount 848T FOUNDATION Quick Start Manual

Fieldbus high density temperature transmitter
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Quick Start Guide
00825-0100-4697, Rev WC
November 2024
Rosemount
848T F
™
™
OUNDATION
Fieldbus High Density Temperature
Transmitter

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Summary of Contents for Emerson Rosemount 848T FOUNDATION

  • Page 1 Quick Start Guide 00825-0100-4697, Rev WC November 2024 Rosemount 848T F ™ ™ OUNDATION Fieldbus High Density Temperature Transmitter...
  • Page 2 Quick Start Guide November 2024 Contents Introduction..........................3 Mount the transmitter.........................7 Wire and apply power....................... 15 Verify the tag..........................23 Verify the transmitter configuration..................24 Product certifications........................ 25 Declaration of conformity......................38 China RoHS..........................40 www.Emerson.com...
  • Page 3 Refer to the Rosemount 848T Reference Manual for more instruction. The manual and this guide are also available electronically on Emerson.com/Rosemount. 1.2  Hazard messages This document uses the following criteria for hazard messages based on ANSI standards Z535.6-2011 (R2017).
  • Page 4 Quick Start Guide for any restrictions associated with a safe installation. Before connecting a Field Communicator in an explosive atmosphere, make sure the instruments in the loop are installed in accordance with intrinsically safe or non-incendive field wiring practices. www.Emerson.com...
  • Page 5 Physical security is an important part of any security program and fundamental in protecting your system. Restrict physical access by unauthorized personnel to protect end users’ assets. This is true for all systems used within the facility. www.Emerson.com...
  • Page 6 Refer to the Product certifications section of this Quick Start Guide documentation when using the RFID tag (option code Y3) for required installation conditions. 1.4  Product recycling/disposal Recycling of equipment and packaging should be taken into consideration and disposed of in accordance with local and national legislation/regulations. www.Emerson.com...
  • Page 7 Mount the transmitter inside the junction box onto a panel using the dimension drawings and secure it using four ¼-20 x 1.25-inch screws. Prerequisites Use four ¼-20 x 1.25-inch screws. Procedure Mount the transmitter to a panel from inside the junction box using one of the following dimension drawings: www.Emerson.com...
  • Page 8 3.67 [93] 2.27 1.88 [58] [48] 1.33 [34] 8.42 [214] 6.00 [152] 3.98 [101] 2.30 [58] [20] A. Nameplate B. Removable wiring connector C. Security switch D. Simulation switch E. External ground screw (optional) Dimensions are in inches (millimeters). www.Emerson.com...
  • Page 9 Dimensions are in inches (millimeters). 2.3  Mount to a panel from a stainless steel junction box Prerequisites Use two ¼-20 x ½-inch screws. Procedure Mount the transmitter to a panel from inside the junction box using one of the following dimension drawings. www.Emerson.com...
  • Page 10 1.8 (46) 9.14 (232.2) 7.72 (196) 1.1 (28) 1.73 (44) 6.61 (168) 4.0 (102) 2.4 (62) 1.8 (47) 1.2 (30) A. Top view B. 3-D view C. Ground screw D. Front view E. Side view Dimensions are in inches (millimeters). www.Emerson.com...
  • Page 11 ½-inch NPT fittings Dimensions are in inches (millimeters). 2.4  Mount to a 2 in (51 mm) pipe stand Procedure Use the optional mounting bracket (option code B6) to mount the transmitter to a 2 in (51 mm) pipe stand when using a junction box. www.Emerson.com...
  • Page 12 Quick Start Guide November 2024 Figure 2-6: Mount an aluminum junction box ‥ ․ 7.55 [193] 5.08 [129] A. Front view B. Side view Dimensions are in inches (millimeters) www.Emerson.com...
  • Page 13 November 2024 Quick Start Guide Figure 2-7: Mount a stainless steel junction box 4.7 (119) 7.5 (190) A. Front view B. Side view C. Fully assembled Dimensions are in inches (millimeters) www.Emerson.com...
  • Page 14 Quick Start Guide November 2024 Figure 2-8: Mount aluminum on a vertical pipe Figure 2-9: Mount stainless steel on vertical pipe www.Emerson.com...
  • Page 15 November 2024 Quick Start Guide 3  Wire and apply power 3.1  Use cable glands Procedure 1. Remove the junction box cover by unscrewing the cover screws. 2. Run the sensor and power/signal wires through the appropriate cable glands (see Figure 3-1). www.Emerson.com...
  • Page 16 H. Sensor 2 I. Sensor 4 J. Sensor 6 K. Sensor 8 3. Install the sensor wires into the correct screw terminals (follow the label on the electronics module). 4. Install the power/signal wires onto the correct screw terminals. www.Emerson.com...
  • Page 17 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. The transmitter must be configured for a 3-wire RTD in order to recognize an RTD with a compensation loop.
  • Page 18 Figure 3-3: Rosemount 848T Analog Input Wiring Diagram A. Analog input connectors B. Analog transmitters C. Power supply 3.4  Typical configuration for F Fieldbus OUNDATION networking Note Each segment in a F Fieldbus trunk must be terminated at OUNDATION both ends. www.Emerson.com...
  • Page 19 2. Ensure the shields are tied together and electrically isolated from the transmitter enclosure. 3. Only ground the shield at the power supply end. 4. Ensure that the sensor shield(s) is electrically isolated from the surrounding grounded fixtures. www.Emerson.com...
  • Page 20 1. Ground sensor wiring shield(s) at the sensor. 2. Ensure the sensor wiring and F Fieldbus signal OUNDATION wiring shields are electrically isolated from the transmitter enclosure. 3. Do not connect the F Fieldbus signal wiring shield to OUNDATION the sensor wiring shield(s). www.Emerson.com...
  • Page 21 3. Do not connect the analog signal wire shield to the F OUNDATION Fieldbus signal wire shield. A. Analog device power supply B. 4–20 mA loop C. Analog device D. Rosemount 848T E. F Fieldbus OUNDATION F. Power supply G. Shield ground points www.Emerson.com...
  • Page 22 Quick Start Guide November 2024 3.5.1  Transmitter enclosure (optional) Ground in accordance with local electrical requirements. www.Emerson.com...
  • Page 23 The installer should note the physical location of the transmitter on both the upper and lower location of the commissioning tag. The bottom portion should be torn off for each device on the segment and used for commissioning the segment in the control system. www.Emerson.com...
  • Page 24 The following is the minimum configuration requirement for a temperature measurement. This guide is designed for systems not using DD wizards. For a complete list of parameters and configuration information refer to the Rosemount 848T Reference Manual. www.Emerson.com...
  • Page 25 European Directive Information A copy of the EC Declaration of Conformity can be found at the end of the Quick Start Guide. The most recent revision of the EC Declaration of Conformity can be found at Emerson.com/Rosemount. 6.2  Ordinary Location Certification...
  • Page 26 = 17.5 = 42.4 = 12.5 V = 300 mA = 380 mA = 2.1 nF = 4.8 mA = 1.3 W = 5.32 W = 15 mW = 2.1 nF = 2.1 nF = 1.2 μF = 1 H www.Emerson.com...
  • Page 27 Markings C, and D; T3C(–50 °C ≤ T ≤ +60 °C) when installed per Rosemount drawing 00848-4405; Class I, Division 2, Groups A, B, C, D; T3C(–50 °C ≤ T ≤ +60 °C) when installed per Rosemount drawing 00848-4405 www.Emerson.com...
  • Page 28 6.3.13. This must be taken into account when installing the equipment. Fieldbus (input) Sensor field terminal (output) = 30 V = 12.5 V = 300 mA = 4.8 mA = 1.3 W = 15 mW = 2.1 nF = 1.2 μF = 1 H www.Emerson.com...
  • Page 29 ≤ +65 °C), Ex ec IIC T5 Gc (-40 °C ≤ T ≤ +65 °C) Special Conditions for Safe Use (X): 1. The equipment must only be installed in an area of pollution degree 2 or better, as defined in IEC 60664-1. www.Emerson.com...
  • Page 30 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. www.Emerson.com...
  • Page 31 ≤ +65 °C), Ex ec IIC T5 Gc (-40 Markings: °C ≤ T ≤ +65 °C) Special Conditions for Safe Use (X): 1. The equipment must only be installed and used in an area of pollution degree 2 or better, as defined in IEC 60664-1. www.Emerson.com...
  • Page 32 (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 www.Emerson.com...
  • Page 33 --- see manufacturer's instruction manual. FISCO (input) Sensor field terminal (output) = 17.5 V = 12.5 V = 380 mA = 4.8 mA = 5.32 W = 15 mW = 2.1 nF = 1.2 μF = 1 H www.Emerson.com...
  • Page 34 Ex ia IIC T4 (–50 °C ≤ T ≤ +60 °C) Markings 6.12  EAC - Belarus, Kazakhstan, Russia 6.12.1  IM Technical Regulation Customs Union (EAC) Intrinsic Safety Fieldbus]: 0Ex ia IIC T4 Ga X, T4(–50 °C ≤ T Markings OUNDATION ≤ +60 °C) www.Emerson.com...
  • Page 35 3. Blanking Plug and Threaded Adapter shall be either NPT or Metric thread forms. G½ and PG 13.5 thread forms are only acceptable for existing (legacy) equipment installations. IECEx Flameproof and Increased Safety IECEx FMG 13.0032X Certificate IEC 60079-0:2011, IEC 60079-1:2007, IEC Standards 60079-7:2006-2007 Ex de IIC Gb Markings www.Emerson.com...
  • Page 36 II 2G Ex ia IIC T6/T4 Gb, II 2D Ex ia IIC T80/T130C Markings Conditions of certification Maximum operating temperature: -58 °F (-50 °C) to +158 °F (+70 °C) The RFID tags shall never be exposed to high electromagnetic field strengths according to IEC 60079-14. www.Emerson.com...
  • Page 37  WARNING Additional warnings The plastic enclosure may present a potential electrostatic ignition hazard. RFID tag has limitations in ambient temperature and zone installation areas (Zones 1 & 21) as compared to the gauge. www.Emerson.com...
  • Page 38 Quick Start Guide November 2024 7  Declaration of conformity www.Emerson.com...
  • Page 39 November 2024 Quick Start Guide www.Emerson.com...
  • Page 40 X: Indicate that said hazardous substance contained in at least one of the homogeneous materials used for this part is above the limit requirement of GB/T 26572. Part Name Spare Parts Descriptions for Assemblies Electronics Terminal Block Assemblies Assembly Housing Electrical Housing Assembly www.Emerson.com...
  • Page 41 November 2024 Quick Start Guide www.Emerson.com...
  • Page 42 Quick Start Guide November 2024 www.Emerson.com...
  • Page 43 November 2024 Quick Start Guide www.Emerson.com...
  • Page 44 2024 Emerson. All rights reserved. Emerson Terms and Conditions of Sale are available upon request. The Emerson logo is a trademark and service mark of Emerson Electric Co. Rosemount is a mark of one of the Emerson family of companies. All other marks are the property of their respective owners.