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Honeywell stt850 SMARTLINE User Manual
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Honeywell stt850 SMARTLINE User Manual

Honeywell stt850 SMARTLINE User Manual

Temperature transmitter
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STT850 SMARTLINE
Temperature Transmitter
User's Manual
34-TT-25-03
Revision 3
March 2016
Honeywell Process Solutions

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Summary of Contents for Honeywell stt850 SMARTLINE

  • Page 1 STT850 SMARTLINE Temperature Transmitter User’s Manual 34-TT-25-03 Revision 3 March 2016 Honeywell Process Solutions...
  • Page 2 In no event is Honeywell liable to anyone for any indirect, special, or consequential damages. The information and specifications in this document are subject to change without notice.
  • Page 3 STT850 SmartLine Series HART/DE Option User’s Manual, document number 34-TT-25-06. Users who have a Honeywell STT850 SmartLine Temperature Transmitter configured for Fieldbus operation are referred to the STT850 SmartLine Series Fieldbus Option User’s Manual, document number (34-TT-25-07). The configuration of your Transmitter depends on the mode of operation and the options selected for it with respect to operating controls, displays and mechanical installation.
  • Page 4 Smart Field Communicator Model STS 103 Operating Guide, Document # 34-ST-11-14 Patent Notice The Honeywell STT850 SmartLine Temperature Transmitter family is covered by one or more of the following U. S. Patents: 5,485,753; 5,811,690; 6,041,659; 6,055,633; 7,786,878; 8,073,098; and other patents pending.
  • Page 5 Symbol Descriptions and Definitions The symbols identified and defined in the following table may appear in this document. Symbol Definition ATTENTION: Identifies information that requires special consideration. TIP: Identifies advice or hints for the user, often in terms of performing a task.
  • Page 6 Symbol Description ® The Factory Mutual Approval mark means the equipment has been rigorously tested and certified to be reliable. The Canadian Standards mark means the equipment has been tested and meets applicable standards for safety and/or performance. The Ex mark means the equipment complies with the requirements of the European standards that are harmonized with the 94/9/EC Directive (ATEX Directive, named after the French "ATmosphere EXplosible").

  • Page 7: Table Of Contents

    Safety Integrity Level (SIL) ................... 6 Installation and Startup ........................7 1.10. Installation Site Evaluation ..................... 7 1.11. Honeywell MC Toolkit......................7 1.12. Display Installation Precautions ..................... 7 1.13. Mounting STT850 SmartLine Temperature Transmitters ............8 3.1.1 Summary......................... 8 3.1.2 Mounting Dimensions ....................9 3.1.3...
  • Page 8 4.1.6 The Basic Display Menu ....................38 4.1.7 Selecting a new setting from a list of choices .............. 42 1.18. Three Button Operation with no Display Installed .............. 43 4.1.8 Zero Adjustment ......................43 4.1.9 Span Adjustment ......................43 1.19. Changing the Default Failsafe Direction................44 4.1.10 DE and Analog Differences ..................
  • Page 9 List of Figures Figure 1 – STT850 Major Assemblies ....................2 Figure 2 – Electronics Housing Components ..................2 Figure 3 –Typical STT850 NamePlate ....................3 Figure 4 – Typical Bracket Mounted Installations ................. 8 Figure 5 – Pipe Mounting Bracket Secured to a Horizontal or Vertical Pipe ........9 Figure 6 –...
  • Page 10 List of Tables Table 1 – Features and Options......................1 Table 2 – Available Display Characteristics ..................4 Table 3 – STT850 Standard Diagnostics Messages ................6 Table 4 – Three-Button Option Functions ................... 22 Table 5 – Three-Button Data Entry ...................... 23 Table 6 –...

  • Page 11: Introduction

    This section is an introduction to the physical and functional characteristics Honeywell’s family of STT850 SmartLine Temperature Transmitters. 1.2. Features and Options The STT850 SmartLine Temperature Transmitter is available in a variety of models for measuring Thermocouples, RTD, Millivolts, and Volt or ohm sensor types. Table 1 lists the protocols, Human- Machine Interface (HMI), materials, approvals, and mounting bracket options for the STT850.

  • Page 12: Functional Characteristics

    1.1.2 Functional Characteristics The Transmitter measures process Temperature and outputs a signal proportional to the measured process variable (PV). Available output communication protocols include 4 to 20mA, Honeywell Digitally Enhanced (DE), HART, and FOUNDATION Fieldbus. STT850 Temperature Transmitter User’s Manual...

  • Page 13: Stt850 Smartline Transmitter Nameplate

    Transmitters with the optional three-button assembly located at the top of the Electronic Housing (see Figure For HART and DE you can also use the Honeywell MC Toolkit or other third-party hand-held to make any adjustments to an STT850 SmartLine Temperature Transmitter. Alternately, certain adjustments can be made through the Experion or Universal Station, if the Transmitter is digitally integrated with a Honeywell Experion or TPS system.

  • Page 14: Display Options

    1.6. Display Options The STT850 SmartLine Temperature Transmitter has two display options: Basic and Advanced; see Table 2. Table 2 – Available Display Characteristics Basic Display  Suitable for basic process needs  rotation in 90 increments  8 configurable screens ...

  • Page 15: Application Design

    Table 3 are specific to the Transmitter, exclusive of those associated with HART and DE protocols. HART and DE diagnostic messages are listed and described in the STT850 SmartLine Temperature Transmitter HART/DE Option User Manual, document number 34-TT-25-06. STT850 Temperature Transmitter User’s Manual...

  • Page 16: Safety Integrity Level (Sil)

    Table 3 – STT850 Standard Diagnostics Messages Critical Diagnostics Non-Critical Diagnostics (Warning Conditions) (Failure Conditions) Temperature Sensor Module Excess Cal 1 Correct Failure (Excess LRV Correct and/or Span correct for Sensor Input 1) Sensor Input 1 Failure Excess Cal 2 correct (Excess LRV Correct and/or Span correct for Sensor Input 2) Sensor Input 2 Failure Input 1 Out of Range...

  • Page 17: Installation And Startup

    1.10. Installation Site Evaluation Evaluate the site selected for the STT850 SmartLine Transmitter installation with respect to the process system design specifications and Honeywell’s published performance characteristics for your particular model. Some parameters that you may want to include in your site evaluation are: ...

  • Page 18: Mounting Stt850 Smartline Temperature Transmitters

    Transmitter models can be attached to a two-inch (50 millimeter) vertical or horizontal pipe using Honeywell’s optional angle. Honeywell’s optional wall mounting bracket is also shown below: For Housing with Adaptor refer to Honeywell drawings 50095917 (Pipe mount), 50095918 (Wall mount) and 50124813 (Angle pipe mount) for detailed mounting specifications.

  • Page 19: Mounting Dimensions

    3.1.2 Mounting Dimensions Refer to Honeywell drawing number 50094836 for detailed dimensions of the transmitter assembly. Abbreviated overall dimensions are also shown on the Specification Sheets for the transmitter models. This section assumes that the mounting dimensions have already been taken into account and the mounting area can accommodate the Transmitter.

  • Page 20: Wiring A Transmitter

    1.14. Wiring a Transmitter 3.1.4 Loop Power Overview The transmitter is designed to operate in a two-wire power/current loop with loop resistance and power supply voltage within the HART or DE operating range shown in Figure Figure 6 – HART and DE Transmitter Operating Ranges STT850 Temperature Transmitter User’s Manual Page 10 Revision 3...

  • Page 21: Figure 7 - Transmitter 9-Screw Terminal Board And Grounding Screw

    For DE operation, add 2.0 V to these values. The Fieldbus transmitter operates from 9-32 V and does not require a loop resistance. Loop wiring is connected to the Transmitter by simply attaching the positive (+) and negative (–) loop wires to the positive (+) and negative (–) terminals on the Transmitter terminal block in the Electronics Housing.

  • Page 22: Digital System Integration Information

    The positive and negative loop wires are connected to the positive (+) and negative (–) terminals on the terminal block in the Transmitter Electronics Housing. Barriers can be installed per Honeywell’s instructions for Transmitters to be used in intrinsically safe applications.

  • Page 23: Grounding And Lightning Protection

    42 V DC. Consult the process design system documentation for specifics. 3.1.10 Process Sealing The STT850 SmartLine Temperature Transmitter is CSA-certified as a Dual Seal device in accordance with ANSI/ISA–12.27.01–2003, “Requirements for Process Sealing Between Electrical Systems and Flammable, or Combustible Process Fluids.”...

  • Page 24: Input Sensor Wiring

    3.1.12 Input Sensor Wiring Connect the input sensors as shown in Figures below: – HART/DE/FF Single Input Wiring Diagram Figure 8 Figure 8 – HART/DE/FF Single Input Wiring Diagram RTD Thermocouple, mV and Ohm Connections STT850 Temperature Transmitter User’s Manual Page 14 Revision 3...

  • Page 25: Figure 9 - Rtd And Ohm Connections

    – DE Dual Input Wiring Diagram Figure 9 o Resistance temperature detector (RTD) measurements use the 3 or 4 wire approach. o Dual-input units wired for a 4-wire RTD will automatically disable Input 2. o To minimize common noise problems in the application, a strap/jumper should be wired between terminals 6 and 8.
  • Page 26 Figure 10 - HART/FF Dual Input Wiring Diagram Remote C/J and Mixed Sensors Connections STT850 Temperature Transmitter User’s Manual Page 16 Revision 3...

  • Page 27: Figure 11 - Digital Output Connections For Ma Load (Hart Only)

    Digital Output is available only on HART transmitters. The Digital Output should not use the same power supply as used to support the 4-20mA transmitter output. See Figure 11 Figure 12. For Intrinsically Safe (IS) applications, the 4-20mA and the Digital Output must use separate IS Barriers.

  • Page 28: Startup

    The actual steps in a startup procedure vary based on the type of Transmitter and the measurement application. In general, the procedures in this section are based on using Honeywell MC Toolkit, with a HART or DE variant, to check the Transmitter input and output under static process conditions, and make adjustments as required initiating full operation with the running process.

  • Page 29: Constant Current Source Mode Procedure

    3.1.16 Constant Current Source Mode Procedure Figure 13 – Current Loop Test Connections 1. Refer to Figure for test connections. Verify the integrity of electrical components in the output current loop. 2. Establish communication with the Transmitter. For these procedures, the values of components in the current loop are not critical if they support reliable communication between the Transmitter and the Toolkit.
  • Page 30 6. Select the Set button. A box will be displayed asking Are you sure you want to place the transmitter in output mode? With the Transmitter in Analog mode, you can observe the output on an externally- connected meter or on a local meter. 7.

  • Page 31: Operation

    4 Operation 1.16. Overview This section provides the information and processes involved for both Digitally Enhanced (DE) and HART and Foundation Fieldbus (FF) operation using the 3-button option. 1.17. Three-Button Operation The STT850 optional three-button interface provides a user interface and operation capability without opening the transmitter.

  • Page 32: Menu Navigation

    Table 4 – Three-Button Option Functions Physical Basic Display Advanced Display Action Button Increment Increment Scroll to previous menu item in an active list. Left Scroll through alphanumeric list to desired  character (ex. for entering Tag names or Previous Menu Item Move cursor Up numeric values) Decrement...

  • Page 33: Editing A Numeric Value

    All numeric entries are clamped at the low or high limit if needed. You can determine the low and high limit for a parameter by selecting either the ▲ or ▼ character while the cursor is positioned over  the left-most digit and press button.

  • Page 34: The Advanced Display Menus

    4.1.5 The Advanced Display Menus The Advanced Display menus are organized into three levels, as shown by Table 6. There is a <Return> menu item at each level that allows the user to return to the previous level. Table 6 – Advanced Display Main Menu Structure Level 1 Level 2 Level 3...

  • Page 35: Table 7 -Diagnostics Menu

    Table 7 – Diagnostics Menu All Diagnostics menu items are Read Only. All instances of #2 reference Dual Inputs <Return> Active Diags Description Sensor Module FAULT FAULT: There is a problem with the Sensor Module FAULT FAULT: There is a problem with the Comm Module Electronics Module (HART, DE, or Fieldbus)
  • Page 36 Input 1 TB6 OPEN: Input 1 terminal TB6 is open OPEN OPEN: Input 2 Terminal TB7 is open Input TB7 OPEN (RTD and Ohm sensors only) OPEN: Input 1 terminal TB8 is open OPEN Applicable to RTD 4 wire Input 1 TB8 configuration for Sensor 1 RTD or Sensor 1 Ohm input OPEN: Input 2 terminal TB8 is open...

  • Page 37: Table 8 -Display Setup Menus

    Table 8 – Display Setup Menus <Return> Return to the Level 1 menu <Return> Adjust the LCD contrast level. Contrast Set Contrast Range from 0 to 9. Default: 5 <Return> Enter Display configuration password. Default: 0000. This value disables the password.

  • Page 38: Table 9 -Calibration Menus

    Display Select the Display Units for the R, K, Units selected PV. Custom Enter Custom Units using any Units alphanumeric value up to 14 DE/FF only characters long. Press  to enter None menu selection Select the decimal resolution Decimals ...
  • Page 39 <Return> Executing this selection corrects the Input 1 Press  to enter S1 Cal Lo Calibration Low Point based on the input Corr measurement. menu selection Do S1 Cal Lo (HART only) The current live value of the Input 1 Sensor is Scroll to Do Cal Press ...
  • Page 40 <Return> Press  to enter Reset menu selection Corrects Reset Executing this selection Resets the Zero, LRV, Scroll to Reset (DE only) Corrects and URV Corrects back to Factory values Corrects Press  to initiate <Return> This selection will calibrate the loop zero output to 4.000 mA Connect a current meter to the transmitter to monitor the loop output.

  • Page 41: Table 10 -Transmitter Setup Menus

    ##. # (HART/DE only) The limits for this value are 0.0 to 32.0 seconds Disabling sets the loop output and Disabled burnout levels to the Honeywell levels NAMUR Output (HART/DE only) Enabling sets the loop output and Enabled burnout levels to the NAMUR...
  • Page 42 Match PVs (Dual Match PVs value for when Loop Inputs only) Ctrl Mode is in Redundant mode (HART/FF only) When enabled, causes all critical sensor input failures to latch to the Critical Fault state. The fault may Enabled, Latching only be cleared by device reset. Disabled When disabled, the critical sensor input failure will be cleared if the...
  • Page 43 <Return> Select Sensor Type1. mV, TC, RTD, Database updates take 30 Sensor 1 Type seconds to complete. Do not interrupt power. Select Sensor ID for Input n for selected Sensor Type. (Input 1 selection or dual Sensor 1 ID Sensor ID for input model).
  • Page 44 Enabled, Callendar - van Dusen RTD coefficients for Sensor 2 CVD Disabled Sensor 2. See Note 1 Press ↵ to enter menu Sensor 2 CVD Resistance at 0°C CVD selection (HART or FF) Sensor 2 R0 ####.#### ↑ and ↓ to coefficient Applicable for select entry.
  • Page 45 Sensor 1, Press ↵ to Sensor 2, Type Average, The range for the selected enter menu (Dual Inputs only) Differential, type is shown selection Redundant, ↑ and ↓ to Split Range Range Values ####.## Lower Range value for Type select entry. (FF only) ↵...
  • Page 46 <Return> Enter the current year. Year This item will only be visible if no # # # # HART only Install Date has been written to the transmitter. Select the current month. Month January through This item will only be visible if no HART only December Install Date has been written to...

  • Page 47: Table 11 -Information Menus

    Only protocols Comm Module The communications protocol of the transmitter:  HART: HART protocol Read Protocol  DE: Honeywell DE protocol Only  FF: Foundation Fieldbus Serial Number Read Serial number of the Fieldbus Comms module (FF only) Only <Return>...

  • Page 48: The Basic Display Menu

    4.1.6 The Basic Display Menu The Basic Display Menu is implemented as one long single-level menu and will “wrap around” when it reaches the start or end of the menu. Operation is as follows:  Press the button to call up the Menu. ...
  • Page 49 Select Input Select Input number to configure, (HART/FF) 1, 2 referred to as "n" in subsequent menu (Dual input only) items Sensor n Type mV, TC, RTD, Ohm Select Sensor Type. Database (FF read only) updates take 30 seconds to complete. Do not interrupt power.
  • Page 50 Break Detect Enable or disable detection of Input Enabled, Disabled (FF read only) wire break When enabled, causes all critical sensor input failures to latch to the Critical Fault state. The fault may Latching Enabled, Disabled only be cleared by device reset. Press ↵...
  • Page 51 NAMUR Output Enabled Disabling sets the loop output and (HART/DE) Disabled burnout levels to the Honeywell levels DAC Zero Trim This selection allows the loop zero (HART/DE) output 4mA value to be trimmed. DAC Zero Trim Note: Loop must Note: You must connect a current...

  • Page 52: Selecting A New Setting From A List Of Choices

    This selection allows the user to enter ↑ and ↓ to the date a transmitter is installed. The Install Date is entered in select sequence of Day, Month, and Year, entry. ↵ to enter followed by the new date and the Install Date prompt Write Date to confirm the DD MM YYYY...

  • Page 53: Three Button Operation With No Display Installed

    1.18. Three Button Operation with no Display Installed When there is no Display installed, the buttons can be used to perform a Zero or Span adjustment of the Transmitter. Caution should be taken to insure these adjustments are only made when the correct input values are applied.

  • Page 54: Changing The Default Failsafe Direction

    1.19. Changing the Default Failsafe Direction For HART or DE the transmitters are shipped with a default failsafe direction of upscale. This means that the Transmitter output will set the current output to upscale failsafe (maximum output) upon detection of a critical status. You can change the direction from upscale failsafe to downscale failsafe (minimum output) by moving the top jumper located in the Electronics module.

  • Page 55: Figure 15 - Locating The Failsafe And Write Protect Jumpers

    Figure 15 – Locating the Failsafe and Write Protect Jumpers Table 13 – HART and DE Failsafe and Write Protect Jumpers Jumper Description Arrangements Failsafe = UP (High) Write Protect = OFF (Not Protected) Failsafe = DOWN (Low) Write Protect = OFF (Not Protected) Failsafe = UP (High) Write Protect = ON (Protected) Failsafe = Down (Low)

  • Page 56: Write Protect Jumper On Foundation Fieldbus (Ff)

    4. If necessary, unplug the interface connector from the Communication module. Do not discard the connector. 5. Set the Failsafe Jumper (top jumper) to the desired position (UP or DOWN). See Table 13 Figure 15 for jumper positioning. 6. If applicable, re-install the Display module as follows: ...

  • Page 57: Monitoring The Basic And Advanced Displays

    Table 14 – Fieldbus Simulation and Write Protect Jumpers Image Description Fieldbus Simulation Mode = OFF Write Protect = OFF (Not Protected) Fieldbus Simulation Mode = OFF Write Protect = ON (Protected) Fieldbus SIM Mode = ON Write Protect = OFF (Not Protected) 1.20.

  • Page 58: Figure 17 - Advanced Display Formats With The Process Variable

    Advanced Display Advanced Display Advanced Display with process variable with Bar graph with Trending Figure 17 – Advanced Display Formats with the Process Variable Table 15 – Advanced Displays with PV Format Display Indications Display Indicator What It Means Diagnostic / Diagnostic condition present Maintenance This indicator is displayed any time a diagnostic is present in the...
  • Page 59 PV Value User Configurable. This field has 7 characters. Maximum allowable numeric value of 9999999 or -999999. If fractional decimals are configured, the fractional positions will be dropped as required. If the PV exceeds the values above limits, the PV is divided by 1000 and “K”...

  • Page 60: Button Operation During Monitoring

    PV Function Block The Function Block Mode is only displayed for Foundation Fieldbus Mode transmitters. The eight possible Modes are shown below. Out Of Service RCas Remote Cascade Auto Automatic Rout Remote Output Manual IMan Initialization Manual Cascade Local Override Process Variable Tag User Configurable.

  • Page 61: Maintenance

    Replacement of damaged parts such as the Electronics Modules. 1.22. Preventive Maintenance Practices and Schedules The STT850 SmartLine Transmitter does not require any specific maintenance at regularly scheduled intervals. Maintenance of the STT850 is limited to ensuring that connections, seals and mounting are tight and secure.
  • Page 62 1. Turn OFF Transmitter power (Power removal is only required in accordance with area safety approvals. Power removal is only required in Class 1 Div 1 Explosionproof and Class 1 Div 2 environments).  When removing the Communications Module with power applied, the loop will go to 0V.
  • Page 63 (Steps 13 - 16 required for Field Upgrades Only) 12. Loosen the End Cap locking screw and unscrew the End Cap from the Field Wiring side of the transmitter housing. 13. Select the proper Communication/External Configuration upgrade kit label from the label strip provided and adhere to the inside of the Field Wiring compartment End Cap.

  • Page 64: Calibration

    For a Transmitter operating in analog mode, you must calibrate its output signal measurement range using any compatible hand-held communicator or a local display. One calibration option is to use the Honeywell MC Toolkit (MCT). Refer to the MC Toolkit User Manual, Document # 34-ST-25-20.
  • Page 65 This page is left blank intentionally STT850 Temperature Transmitter User’s Manual Revision 3 Page 55...

  • Page 66: Troubleshooting

    However, this section covers the diagnostic messages that indicate critical conditions. Other than the critical conditions, additional detail is not provided. If you require assistance, contact your distributor or Honeywell Technical Support. All other messages are covered by the MC Toolkit Users’ Manual. 1.27.

  • Page 67: Fault Conditions And Recommended Corrective Actions

    7.1.1 Fault Conditions and Recommended Corrective Actions Table 16 – Fault Conditions and Recommended Corrective Actions. Recommended Corrective Condtion Analysis Action Electronics Module Use a HART, DE, or Fieldbus Cycle power to the Fault. communicator to read the detailed transmitter. A critical failure has status information from the transmitter.

  • Page 68: Parts List

    8 Parts List 1.28. Overview Individually saleable parts for the various Transmitter models are listed in this section. Some parts are illustrated for identification. Parts are identified and listed in the corresponding tables as follows:  Individually saleable parts are indicated in each figure by key number callout. ...
  • Page 69 1-10 100- Figure Part Number Description Unit 1000 Units Units 50049911-502 Basic Display Module 50049846-503 Advanced Display Module 50087087-503 Advanced Display Module, East Asia (CH, JP) Figure 50086421-501 HART/DE Temperature/Terminal Block Assy Without Lightning Protection, Single Input 50086421-502 HART/DE Temperature/Terminal Block Assy Without Lightning Protection, Dual Input 50086421-503 HART/DE Temperature/Terminal Block Assy With...

  • Page 70: Figure 20 - Pipe And Wall Bracket Parts

    Figure 20 – Pipe and Wall Bracket Parts Pipe Mounting Bracket Carbon Steel 316 SS Pipe Mounting Bracket Carbon Steel Angle Pipe Mounting Bracket 316 SS Angle Pipe Mounting Bracket 316 SS Marine Approved Mounting Bracket Wall Mounting Bracket Carbon Steel Wall Mounting Bracket 316 SS Table 18 –...

  • Page 71: Figure 21 - Electronic Housing, Display End

    Figure 21 – Electronic Housing, Display End Table 19 – Transmitter Major Assemblies (Refer to Figure , Figure Quantity Part Number Description Per Unit 50049858-501 End Cap (Aluminum) 50049858-521 End Cap (Stainless Steel) 50049832-501 End Cap, Display (Aluminum) 50049832-521 End Cap, Display (Stainless Steel) STT850 Temperature Transmitter User’s Manual Revision 3 Page 61...
  • Page 72 50086421-501 HART/DE Temperature/Terminal Block Assy Without Lightning Protection, Single Input 50086421-502 HART/DE Temperature/Terminal Block Assy Without Lightning Protection, Dual Input 50086421-503 HART/DE Temperature/Terminal Block Assy With Lightning Protection, Single Input 50086421-504 HART/DE Temperature/Terminal Block Assy With Lightning Protection, Dual Input 50086421-505 HART/DE Temperature/Terminal Block Assy Without Lightning Protection, Single Input w/Digital Output...

  • Page 73: Figure 22 - Electronic Housing, Terminal Block End

    Figure 22 – Electronic Housing, Terminal Block End STT850 Temperature Transmitter User’s Manual Revision 3 Page 63...

  • Page 74: Appendix A. Product Certifications

    Appendix A. PRODUCT CERTIFICATIONS A1. Safety Instrumented Systems (SIS) Installations For Safety Certified Installations, please refer to STT850 Safety Manual 34-TT-25-05 for installation procedure and system requirements. A2. European Directive Information (CE Mark) STT850 Temperature Transmitter User’s Manual Page 64 Revision 3...
  • Page 75 STT850 Temperature Transmitter User’s Manual Revision 3 Page 65...
  • Page 76 STT850 Temperature Transmitter User’s Manual Page 66 Revision 3...
  • Page 77 STT850 Temperature Transmitter User’s Manual Revision 3 Page 67...

  • Page 78: Ambient Temperature

    A3. Hazardous Locations Certifications AGENCY TYPE OF PROTECTION COMM Electrical Ambient CODE OPTION Parameters Temperature Explosion proof, Certificate: 3051269: Class I, Division 1, Groups A, B, C, C to 85 Dust Ignition Proof: 4-20 mA/ With Display: Class II, III, Division 1, Groups E, DE/HART/ FF/ Note 1 C to 70...
  • Page 79 Certificate: Intrinsically Safe, 2689056: Class I, II, III, Division 1, Groups A, B, C, 4-20 mA/ D, E, F, G; T4 Note 2 C to 70 DE/HART/FF Ex ia IIC T4 Ga FISCO Field Device (Only for FF Option) Ex ia IIC T4 Certificate: Non-Incendive, 2689056:...
  • Page 80 Flameproof, SIR 14.0020X 4-20 mA/ Ex d IIC T4 Gb DE/HART/ Note 1 C to 85 Ex tb IIIC T 95 C IP 66/ IP67 Intrinsically Safe, SIR 14.0020X Ex ia IIC T4 Ga C to 70 4-20 mA/ FISCO Field Device (Only Note 2 FISCO: DE/HART/ FF...
  • Page 81 Notes 1. Operating Parameters: 4-20 mA/DE/HART (Loop Terminal) Terminals 1, 2: Voltage= 11 to 42 V Current= 4-20 mA Normal (3.8 – 23 mA Faults) OPTIONAL DIGITAL OUTPUT: Terminals 4 and 9: Voltage 4 to 30 V Current 40 ma max FF (Loop Terminal) Voltage= 9 to 32 V Current= 25 mA...

  • Page 82: Warnings And Cautions

    A4. Marking ATEX Directive General: The following information is provided as part of the labeling of the transmitter: • Name and Address of the manufacturer • Notified Body identification: DEKRA Quality B.V., Arnhem, the Netherlands • For complete model number, see the Model Selection Guide for the particular model of Temperature Transmitter.
  • Page 83 A.5 Conditions of Use” for Ex Equipment”, Hazardous Location Equipment or “Schedule of Limitations”: Consult the manufacturer for dimensional information on the flameproof joints for repair. Painted surface of the STT850 may store electrostatic charge and become a source of ignition in applications with a low relative humidity less than approximately30% relative humidity where the painted surface is relatively free of surface contamination such as dirt, dust or oil.
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  • Page 90: Glossary

    Glossary American Wire Gauge Callendar Van Duesen is an equation that describe the relationship between resistance (R) and temperature (t) of platinum resistance thermometers (RTD) Digital Enhanced Communications Mode Electromagnetic Interference Foundation Fieldbus Field Termination Assembly Hertz Lower Range Limit Lower Range Value mAdc Milliamperes Direct Current...
  • Page 91 Optional 3-Button Assembly ....... 4 Physical Characteristics ..........1 Parts List ........... 58 Glossary ........... 80 Patent Notice ..........iv Honeywell MC Toolkit ......... 7 References ..........iv Release Information ........iii STT850 Temperature Transmitter User’s Manual Revision 3 Page 81...
  • Page 92 Safety ............5 Accuracy ..............5 Diagnosis Messages ........... 5 Safety Integrity Level ..........6 Safety Certification ........3 Startup ............. 18 Constant Current Source Mode Procedure ....19 Output Check Procedures ........18 Support and Contact Information ....iv Symbol Descriptions and Definitions ...
  • Page 93 China – PRC - Shanghai Honeywell China Inc. Phone: (86-21) 5257-4568 Fax: (86-21) 6237-2826 Singapore Honeywell Pte Ltd. Phone: +(65) 6580 3278 Fax: +(65) 6445-3033 South Korea Honeywell Korea Co Ltd Phone: +(822) 799 6114 Fax: +(822) 792 9015...
  • Page 94 For more information To learn more about SmartLine Transmitters, visit www.honeywellprocess.com Or contact your Honeywell Account Manager Process Solutions Honeywell 1250 W Sam Houston Pkwy S Houston, TX 77042 Honeywell Control Systems Ltd Honeywell House, Skimped Hill Lane Bracknell, England, RG12 1EB...

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