Emerson Rosemount 3408 Reference Manual
  1. Manuals
  2. Brands
  3. Emerson Manuals
  4. Transmitter
  5. Rosemount 3408
  6. Reference manual
Emerson Rosemount 3408 Reference Manual

Emerson Rosemount 3408 Reference Manual

Level transmitter non-contacting radar with hart protocol
Hide thumbs Also See for Rosemount 3408:
Table of Contents

Advertisement

Quick Links

Download this manual
Reference Manual
00809-0100-4418, Rev AF
April 2025
Rosemount
™
3408 Level Transmitter
Non-Contacting Radar with HART
Protocol
®

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Rosemount 3408 and is the answer not in the manual?

Questions and answers

Related Manuals for Emerson Rosemount 3408

Summary of Contents for Emerson Rosemount 3408

  • Page 1 Reference Manual 00809-0100-4418, Rev AF April 2025 Rosemount ™ 3408 Level Transmitter Non-Contacting Radar with HART Protocol ®...
  • Page 2 Emerson. Any continued use of product that has been damaged or modified without the written authorization is at the customer’s sole risk and expense.
  • Page 3 The products described in this document are NOT designed for nuclear-qualified applications. Using non-nuclear qualified products in applications that require nuclear-qualified hardware or products may cause inaccurate readings. For information on Rosemount nuclear-qualified products, contact your local Emerson Sales Representative.

  • Page 5: Table Of Contents

    5.4 Confirm correct device driver....................40 5.5 Rosemount Radar Master Plus....................40 5.6 AMS Device Configurator......................41 5.7 Configure transmitter using guided setup................41 ® 5.8 Wireless configuration via Bluetooth technology............... 42 5.9 Run verify level...........................43 5.10 Multidrop communication..................... 43 ® ™ 5.11 Use with the Rosemount 333 HART Tri-Loop ..............43 www.Emerson.com...
  • Page 6 7.4 Service and troubleshooting tools..................83 7.5 Application challenges......................92 7.6 Service support........................102 Appendix A  Specifications and reference data..................103 A.1 Performance specifications....................103 A.2 Functional specifications......................105 A.3 Physical specifications......................110 A.4 Dimensional drawings......................112 Appendix B  Configuration parameters....................117 B.1 Menu tree..........................117 B.2 Device setup..........................119 B.3 Level setup..........................123 B.4 Alert setup..........................136 www.Emerson.com...

  • Page 7: Chapter 1 Introduction

    Specifications and reference data supplies reference and specification data. Configuration parameters provides extended information about the configuration parameters. 1.3  NAMUR NE 53 revision history The Rosemount 3408 meets the NAMUR recommendation NE 53. See the Device Revision History document for more information. www.Emerson.com...

  • Page 8: Product Certifications

    Introduction Reference Manual April 2025 00809-0100-4418 1.4  Product certifications See the Rosemount 3408 Product Certifications document for detailed information on the existing approvals and certifications. 1.5  Open source licenses This device uses open source software. Further information can be found in the License Information document available at Emerson.com/Rosemount.

  • Page 9: Chapter 2 Transmitter Overview

    Transmitter overview 2.1  Measurement principle The Rosemount 3408 is a device for continuous level measurements using fast-sweep Frequency Modulated Continuous Wave (FMCW) technology. The device continuously emits signal sweeps with a constantly varying frequency towards the product surface. Since the device continuously changes the frequency of the...

  • Page 10: Solid Surface

    High consistency - pulp stock Alumina Salt 2.3  Vessel characteristics 2.3.1  In-tank obstructions The device should be mounted so that objects such as heating coils, ladders, and agitators are not within the radar beam. These objects may cause false echoes resulting in reduced www.Emerson.com...

  • Page 11: Tank Shape

    The Rosemount 3408 uses Frequency Modulated Continuous Wave (FMCW) technology and smart algorithms to maximize measurement accuracy and reliability, even in small tanks and challenging fast-filling vessels.
  • Page 12 Get reliable level measurements of sumps or ponds, regardless of challenging surface and weather conditions. Bulk solids The Rosemount 3408 can be used for a wide range of solid applications. It provides a reliable measurement that is unaffected by dust or low product reflectivity. Safety applications The Rosemount 3408 is suitable for safety applications such as overfill prevention, dry-run prevention, or level range monitoring.

  • Page 13: Components Of The Transmitter

    B. Two cable/conduit entries (½-14 NPT or M20 x 1.5) C. Transmitter housing D. External ground screw E. Process seal antenna F. Lens antenna G. Main label H. ATAP (Atmospheric Temperature and Atmospheric Pressure) lens antenna I. Antenna extension for open air installations Related information Dimensional drawings www.Emerson.com...

  • Page 14: System Integration

    F. Approved IS barrier (for Intrinsically Safe installations only) G. Rosemount 333 H. Host/DCS system I. HART modem J. PC with Rosemount Radar Master Plus The Rosemount 3408 is compliant with NAMUR NE 107 Field Diagnostics for standardized device diagnostic information. www.Emerson.com...

  • Page 15: Chapter 3 Mechanical Installation

    Use the equipment only as specified in this manual. Failure to do so may impair the protection provided by the equipment. For installations in hazardous locations, the transmitter must be installed according to the Rosemount 3408 Product Certifications document and System Control Drawing.

  • Page 16: Confirm Approval Type

    • Do not mount the device on a manway cover. • Do not position the device directly over a side manway door. • Multiple Rosemount 3408 devices can be used in the same tank without interfering with each other. www.Emerson.com...

  • Page 17: Free Space Requirements

    See Table 3-1 for recommended clearance. Figure 3-3: Free Space Requirements Table 3-1: Distance to Tank Wall (L) Application Minimum Recommended Liquids 8 in. (200 mm) ½ of tank radius Solids 8 in. (200 mm) ⅔ of tank radius www.Emerson.com...

  • Page 18: Non-Metallic Tanks

    Figure 3-4: Inclination Max. 3° 90° 3.3.4  Non-metallic tanks Nearby objects outside the tank may cause disturbing radar echoes. Wherever possible, the device should be positioned so that objects close to the tank are kept outside the radar beam. www.Emerson.com...

  • Page 19: Beam Angle And Beam Width

    33 (10) 4.6 (1.4) 5.2 (1.6) 6.9 (2.1) 49 (15) 6.9 (2.1) 7.7 (2.4) 10.3 (3.2) 66 (20) 9.2 (2.8) 10.4 (3.1) 13.9 (4.2) 82 (25) 11.5 (3.5) 12.9 (3.9) 17.2 (5.3) 98 (30) 13.7 (4.2) 15.4 (4.7) 20.6 (6.3) www.Emerson.com...

  • Page 20: Nozzle Requirements

    3.3.7  Shipboard installations Devices with aluminum housing are not approved for open deck installations; for use only in engine room, pump room, etc. For application conditions and limitations refer to the applicable shipboard approval. www.Emerson.com...

  • Page 21: Mount The Process Seal Antenna

    Be careful not to scratch or otherwise damage the PTFE sealing. 2. Tighten the bolts and nuts (see Table 3-5). Note • Re-tighten after 24 hours and again after the first temperature cycle. • Check at regular intervals and re-tighten if necessary. www.Emerson.com...

  • Page 22: Torque Specifications

    74 (100) 6-in./DN150/150A 66 (90) 66 (90) 74 (100) 136 (185) 74 (100) 3.5  Mount the lens antenna 3.5.1  Mount on NPT threaded connections Procedure 1. Apply anti-seize paste or PTFE tape on threads according to your site procedures. www.Emerson.com...
  • Page 23 46 mm / 50 mm Note Be careful not to scratch or otherwise damage the PTFE sealing. 3.5.2  Mount on BSPP (G) threaded connections Procedure 1. Place a suitable gasket on the tank nozzle. Example • (A) Threaded fitting • (B) Threaded flange www.Emerson.com...

  • Page 24: Mount The Atap Lens Antenna

    3.6.1  Open air installations The antenna extension must be fitted to the transmitter to comply with open air requirements. Figure 3-7: Antenna Extension 3.6.2  Mount the bracket Prerequisites Mount the bracket so that it is not susceptible to vibration. www.Emerson.com...
  • Page 25 Reference Manual Mechanical installation 00809-0100-4418 April 2025 Procedure 1. Mount the bracket to the pipe/wall. Example 14 mm 2. Mount the adapter. 14 mm 3. Secure the transmitter to the adapter. 50 mm www.Emerson.com...
  • Page 26 Reference Manual April 2025 00809-0100-4418 3.6.3  Mount on 1½-in. BSPP (G) threaded connections Procedure 1. Place a suitable gasket on the tank nozzle. Example • (A) Threaded fitting • (B) Threaded flange 2. Mount the transmitter on the tank. 50 mm www.Emerson.com...

  • Page 27: Rotate The Transmitter Housing

    The housing can be rotated to improve field access or to better view the optional LCD display. Procedure 1. Loosen the set screw. H2.5 mm 2. Rotate the transmitter housing to the desired location, and then retighten the set screw. H2.5 mm www.Emerson.com...
  • Page 28 Mechanical installation Reference Manual April 2025 00809-0100-4418 www.Emerson.com...

  • Page 29: Chapter 4 Electrical Installation

    Use the equipment only as specified in this manual. Failure to do so may impair the protection provided by the equipment. For installations in hazardous locations, the transmitter must be installed according to the Rosemount 3408 Product Certifications document and System Control Drawing.

  • Page 30: Hazardous Areas

    4.3.3  Internal power consumption < 0.8 W in normal operation 4.3.4  Grounding Make sure grounding is done according to national and local electrical codes. Failure to do so may impair the protection provided by the equipment. www.Emerson.com...
  • Page 31 D. Connect drain wire to the power supply ground Note Do not ground the shield and its drain wire at the transmitter. If the cable shield touches the transmitter housing, it can create ground loops and interfere with communications. www.Emerson.com...

  • Page 32: Power Supply

    (R) is determined by the voltage level of the external power supply (U (Vdc) R (Ω) ≥ 15.6 R = 44.4 × (U − 12) < 15.6 R = 250 × (U − 15) Figure 4-3: Load Limits R (Ω) 1021 1000 U E (Vdc) 15.6 17.6 www.Emerson.com...

  • Page 33: Wiring Diagram

    D. Approved IS barrier (for Intrinsically Safe installations only) E. HART modem F. Load resistance (≥250 Ω) G. Current meter H. Power supply 4.4  Connect wiring and power up Procedure Verify the power supply is disconnected. 2. Remove the cover. 3. Remove the LCD display (if fitted). www.Emerson.com...
  • Page 34 Identification of thread size and type: ½-14 NPT M20 x 1.5 6. Connect the cable wires. 0.3 in. (8 mm) Note When connecting a flexible (stranded) conductor, use a small screwdriver to press down and hold the terminal connection open. 7. Ensure proper grounding. www.Emerson.com...
  • Page 35 9. Seal any unused port with the enclosed metal plug. Apply PTFE tape or other sealant to the threads. 10. Insert the LCD display into the compartment until you hear a "click" sound. 11. Attach and tighten the cover. www.Emerson.com...
  • Page 36 Turn the jam screw counterclockwise until it contacts the cover. Note Required for explosion-proof/flameproof installations only. H2.5 mm d) Turn the jam screw an additional ½ turn counterclockwise to secure the cover. 12. Connect the power supply. www.Emerson.com...

  • Page 37: Optional Devices

    Tri-Loop ® ™ The Rosemount 3408 outputs a HART signal with four process variables. By using the Rosemount 333 HART Tri-Loop, up to three additional analog 4-20 mA outputs are provided. Each Tri-Loop channel receives power from control room. Channel 1 must be powered for the Tri-Loop to operate.
  • Page 38 Electrical installation Reference Manual April 2025 00809-0100-4418 www.Emerson.com...

  • Page 39: Chapter 5 Configuration

    Use the equipment only as specified in this manual. Failure to do so may impair the protection provided by the equipment. For installations in hazardous locations, the transmitter must be installed according to the Rosemount 3408 Product Certifications document and System Control Drawing.

  • Page 40: Overview

    Field Device Integration (FDI) compliant systems • Device Descriptor (DD) compliant systems • Device Type Manager (DTM ) compliant systems ™ • Emerson's configuration tools with Bluetooth wireless technology capabilities ® 5.4  Confirm correct device driver Prerequisites This only applies to the desktop version. Procedure 1.

  • Page 41: Ams Device Configurator

    Note The mobile version requires Bluetooth connection. ® Related information Emerson.com/AMSDeviceConfigurator 5.6.2  Add the FDI Package to AMS Device Configurator Procedure 1. Start AMS Device Configurator. 2. At the top left, click the menu icon and select Add Device Package.

  • Page 42: Wireless Configuration Via Bluetooth ® Technology

    The Bluetooth functionality is enabled by default. If you are not using this wireless capability, it is recommended to disable it using a standard device configuration tool. Procedure 1. Select Service Tools → Communication. 2. In the Bluetooth Radio list, select Disable. www.Emerson.com...

  • Page 43: Run Verify Level

    5.11  Use with the Rosemount 333 HART Tri-Loop ® ™ To prepare the transmitter for use with a Rosemount 333 HART Tri-Loop, the transmitter must be configured to Burst Mode and the process variable output order must be set. www.Emerson.com...

  • Page 44: Write Protection

    Reference Manual April 2025 00809-0100-4418 Prerequisites The operational mode on the Rosemount 3408 must be set to Control/Monitoring when used with the Rosemount 333 HART Tri-Loop. Burst Mode configuration is possible via host systems supporting Device Descriptors (DD). Procedure 1. Make sure the transmitter is properly configured.

  • Page 45: Advanced Setup

    The default setting is mode 1. 5.13.2  Change the sweep mode Contact your local Emerson representative for further instructions. You need to provide the manufacturing date and serial number. Figure 5-2: Main Label A. Serial number B.
  • Page 46 Configuration Reference Manual April 2025 00809-0100-4418 www.Emerson.com...

  • Page 47: Operation And Maintenance

    Loop current ANALOG OUT Loop current as perceived by the device. Only for transmitters ordered with Smart Diagnostics Suite or Smart Meter Verification (professional). Default, user selectable display text (up to 14 characters). Related information User defined variable setup www.Emerson.com...

  • Page 48: Set Up The Lcd Display

    2. In the Display Language list, select the desired language. 6.2.3  Rotate the display The LCD display can be rotated 180 degrees. Procedure 1. Select Configure → (Manual Setup) → Device Setup → Display. 2. In the Display Orientation list, select 0 deg or 180 deg. www.Emerson.com...

  • Page 49: View Measurement Data

    1. Go to the Overview screen to view the overall device status. 2. If status is anything other than Good, select the button in the device status image to open a window with active alerts. Active alerts can also be obtained via Service Tools → Alerts. www.Emerson.com...
  • Page 50 At least one Out of Specification Specification alert is active (and no Failure or Function Check alerts).   Maintenance At least one Maintenance Required Required alert is active (and no Failure, Function Check, or Out of Specification alerts).   www.Emerson.com...

  • Page 51: Smart Echo Level Test

    This test is available for transmitters with: • Option code ET, MV, or QT • Rosemount Radar Master Plus Procedure 1. Select Service Tools → Proof Test. 2. Select Configure Smart Echo. 3. In the Smart Echo Level box, enter the desired value. 4. Select Save. www.Emerson.com...

  • Page 52: Smart Meter Verification

    The Smart Meter Verification functionality can be scheduled to run at defined intervals, or it can be initiated on demand. Enabling the Signal Quality Alert offers an additional layer of assurance through continuous measurement health monitoring. www.Emerson.com...

  • Page 53: Supported Features

    The verification result is categorized into seven diagnostics categories. Each category will have a pass/fail result. All must pass for the verification to pass. There may be other active alerts in the device that do not affect the result. www.Emerson.com...

  • Page 54: Summary Report

    The report includes the pass/fail results, configuration changes since previous verification together with a check sum. 6.6.5  Schedule automatic verification Procedure 1. Select Service Tools → Verification. 2. Under Automatic Verification, select Schedule Verification and follow the on-screen instructions. www.Emerson.com...

  • Page 55: Service And Troubleshooting

    Use the equipment only as specified in this manual. Failure to do so may impair the protection provided by the equipment. For installations in hazardous locations, the transmitter must be installed according to the Rosemount 3408 Product Certifications document and System Control Drawing.

  • Page 56: Diagnostic Messages Per Namur Ne 107

    1. Restart the device. 2. If the condition persists, replace the transmitter electronics (or the device). Related information Restart the device 7.2.3  Device memory failure Category Failure Cause A device memory error has occurred. The device measurement reading is invalid. www.Emerson.com...

  • Page 57: Startup Failure

    Category Failure Cause The software in the device encountered a problem and stopped running which may cause an invalid measurement reading. In some cases, problems may be caused by temporary environmental conditions (e.g. electromagnetic interferences) and not observed again. www.Emerson.com...

  • Page 58: Configuration Error

    Configure transmitter using guided setup 7.2.8  Configuration error Failure Category Cause The device has detected a configuration error. Reasons may be multiple. Recommended actions 1. Click the Details button for more information. 2. Correct the parameter causing the error. www.Emerson.com...
  • Page 59 The configured tank geometry results in a too large level measuring range for this device. Recommended actions 1. Check tank geometry configuration and reduce Reference Height. 2. If condition persists, restore default settings and reconfigure the device. Related information Reference height Restore to default settings Configure transmitter using guided setup www.Emerson.com...
  • Page 60 1. In the threshold table, check that distance-threshold values are entered in increasing order. 2. Check that the number of threshold points to use is correct. 3. If condition persists, restore default settings and reconfigure the device. Related information Amplitude threshold Restore to default settings Configure transmitter using guided setup www.Emerson.com...
  • Page 61 2. Change Operational Mode to Control/Monitoring if device is not intended to be used as safety device. 3. If the condition persists, restore default settings and reconfigure device. Related information Rosemount 3408 Safety Manual Operational mode Restore to default settings Configure transmitter using guided setup...
  • Page 62 Recommended actions Replace the device. Analog out span configuration error Cause The span for the configured analog out range is too small. Recommended actions Increase analog out span by adjusting Upper or Lower Range Value. www.Emerson.com...
  • Page 63 2. Change Operational Mode to Control/Monitoring if device is not intended to be used as safety device. 3. If the condition persists, restore default settings and reconfigure device. Related information Rosemount 3408 Safety Manual Operational mode Restore to default settings Configure transmitter using guided setup...
  • Page 64 Start codes are unique for individual devices and cannot be copied from one device to another. Recommended actions 1. Enter a valid start code for this device using the Upgrade function. 2. If condition persists, contact your local Emerson representative to get a valid start code. 7.2.9  Safety mode not activated...
  • Page 65 Recommended actions 1. Bring the system to a safe state. 2. Verify that the process variable is within specified limits. 3. Reconfirm the user defined alarm limit. 4. If not needed, disable this alert. Related information High/low user defined alert www.Emerson.com...
  • Page 66 The dielectric constant estimation is degraded. Accuracy of level measurement may be degraded. Recommended actions 1. Check configuration of Bottom Product Dielectric Constant. 2. Check configuration of Reference Height and Bottom Offset. 3. If not needed, disable Tank Bottom Projection. www.Emerson.com...
  • Page 67 This error will likely result in reduced or no Bluetooth communication capability; the field device will continue to function independent of this Bluetooth communication alert. Recommended actions 1. Restart the device. 2. Replace Bluetooth communication display. Related information Restart the device www.Emerson.com...

  • Page 68: Troubleshooting Guides

    Reported level is too high or low Figure 7-1: Symptom A. Level B. Time C. Actual level D. Reported level Possible cause Incorrect tank geometry configuration. Recommended actions • Verify the tank geometry parameters are configured correctly (especially the Reference Height). www.Emerson.com...
  • Page 69 Analyze the echo curve and check amplitude thresholds. • Remove the disturbing object. • Put an inclined metal plate on top of the disturbing object. • Move the device to another position. Related information Suppressing false echoes Read the echo curve Amplitude threshold Mounting position www.Emerson.com...
  • Page 70 Remove the disturbing object. • Move the device to another position. Possible cause Product build-up on the antenna. Recommended actions • Clean the antenna. Related information Suppressing false echoes Read the echo curve Amplitude threshold Change the upper null zone Mounting position www.Emerson.com...
  • Page 71 D. Reported level Possible cause Product surface is within the Upper Null Zone and a disturbance echo is interpreted as the product surface. Recommended actions • Check the setting of the Upper Null Zone. Related information Upper null zone www.Emerson.com...
  • Page 72 Multiple products in the tank, e.g. thin oil layer on top of water that is sometimes detected, sometimes not. Recommended actions • Set Double Surface Handling to Track Upper Surface or Track Lower Surface. Related information Double surface handling www.Emerson.com...
  • Page 73 C. Reported level Possible cause Excessive foaming or turbulence. Recommended actions • Under turbulent conditions with low level rates, consider increasing the Damping value. • Enable the Foam parameter or Turbulent Surface parameter, or both. Related information Damping value Process conditions www.Emerson.com...
  • Page 74 Figure 7-7: Symptom A. Level B. Time C. Actual level D. Reported level Possible cause The product surface is close to a suppressed false echo. Recommended actions • If possible, remove the disturbing object. Related information Read the echo curve www.Emerson.com...
  • Page 75 If there is a problem with lag during rapid level changes, consider decreasing the Damping value. Possible cause Maximum Level Rate value too low. Recommended actions • Verify Maximum Level Rate configuration. Related information Damping value Maximum level rate www.Emerson.com...
  • Page 76 B. Time C. Actual level D. Reported level Possible cause Upper Range Value is not set correctly. Recommended actions • Check that the Upper Range Value matches the 100% (20 mA) level in the tank. Related information Upper/lower range value www.Emerson.com...
  • Page 77 A. Level B. Time C. Actual level D. Reported level Possible cause A strong double bounce echo is interpreted as the product surface. Recommended actions • Enable the Double Bounce Handling function. Related information Handling strong double bounce echoes www.Emerson.com...
  • Page 78 Verify the Reference Height is configured correctly. • Enable the Tank Bottom Projection function • Enable the Bottom echo visible when tank is empty parameter. Related information Reference height Use tank bottom projection Enable bottom echo visible when tank is empty www.Emerson.com...
  • Page 79 After closing the cover, the echo is lost and the device reports "Level measurement lost". Recommended actions • Before opening the manway cover, disconnect power to the device. • After closing, restart the device. • Move the device to another position. Related information Restart the device Mounting position www.Emerson.com...
  • Page 80 "Level measurement lost". The message is cleared when start filling the tank. Recommended actions • Before opening the manway door, disconnect power to the device. • After closing, restart the device. • Move the device to another position. Related information Restart the device Mounting position www.Emerson.com...
  • Page 81 Enable bottom echo visible when tank is empty 7.3.2  Troubleshooting the 4-20 mA/HART output Device milliamp reading is zero Recommended actions 1. Verify power is applied to signal terminals. 2. Verify power supply voltage is adequate at signal terminals. www.Emerson.com...
  • Page 82 Verify level is between the 4 and 20 mA set points. • Verify output is not in alarm condition. • Verify device is not in loop test or simulation mode. Related information Upper/lower range value Alarm mode Check device status www.Emerson.com...

  • Page 83: Service And Troubleshooting Tools

    Measurement problems can be understood by studying the position and amplitude of the different peaks. Additionally, the recorded echo curves give insight into unexpected and intermittent measurement behaviors, for instance, at the time of the triggered alert. www.Emerson.com...

  • Page 84: Read The Echo Curve

    Echo managed as a double bounce echo by the Double Bounce function Secondary surface Echo tracked as the current secondary surface (if Double Surface Handling function is enabled) Tank bottom echo Echo considered as an echo from the tank bottom www.Emerson.com...

  • Page 85: Zoom In And Out The Echo Curve

    You can zoom in to a specific area of the echo curve. Procedure • To zoom in, drag a rectangle around the area you want to magnify. • To zoom out, in the upper right corner of the echo curve, select Reset Zoom. www.Emerson.com...
  • Page 86 Click the left or right arrow, or drag anywhere in the timeline. b) Click the start point in the timeline. 2. Select Play, or drag the timeline slider to move one frame at a time. Export echo curve movies Procedure 1. Select Service Tools → Echo Curve. www.Emerson.com...

  • Page 87: Set Echo Curve Range

    To set the resolution of the level trend timeline: Procedure 1. Select Service Tools → Echo Curve. 2. Select Options. 3. In the Timeline Resolution list, select the desired length (in hours) of the timeline. 4. Select Save. 5. Select Back. www.Emerson.com...
  • Page 88 You can view backup and echo curve files with the Rosemount Level Diagnostics Tool. Figure 7-18: Rosemount Level Diagnostics Tool Download Rosemount Level Diagnostics Tool Procedure Download the software at Emerson.com/RosemountLevelDiagnosticsTool. View a backup file of the device configuration You can view backup files with the Rosemount Level Diagnostics Tool. Procedure 1.

  • Page 89: Perform An Analog Loop Test

    A backup of the device configuration will be saved to file as well as a configuration report (optional). The backup file may be useful to: • Restore the configuration of the transmitter. • Install another transmitter in a similar tank. • Troubleshoot the transmitter. www.Emerson.com...

  • Page 90: Download Configuration From File To Device

    The backup file can be used to restore configuration at a later stage. Procedure 1. Select Service Tools → Maintenance → Reset/Restore. 2. Select Restore Default Settings and follow the on-screen instructions. Related information Save a backup file of the device configuration 7.4.9  Reset Bluetooth security ® Procedure 1. Select Configure → (Manual Setup) → Device Setup → Security. www.Emerson.com...

  • Page 91: Use The Simulation Mode

    2. Type the desired register number to start reading from. In Rosemount Radar Master Plus, registers can also be viewed by selecting a group from the Block list. 3. Select Read Holding Registers (Refresh in Rosemount Radar Master Plus). 4. (Handheld communicator) Select Holding Registers. www.Emerson.com...

  • Page 92: Application Challenges

    Suppressing false echoes may not be sufficient in those areas. Note Do not create a customized amplitude threshold section around echoes which are already registered as false echoes. www.Emerson.com...
  • Page 93 It is recommended to adjust thresholds using Rosemount Radar Master Plus. Procedure 1. Select Service Tools → Echo Curve. 2. In the echo curve, drag the amplitude threshold point left or right, or type the desired value. Figure 7-19: Amplitude Threshold Point 3. Select Save. www.Emerson.com...

  • Page 94: Set The Endpoint Of A Threshold Segment

    However, false echoes can be suppressed to reduce the influence of such objects, in case they cannot be totally avoided. When the surface is passing by a disturbing object, the transmitter will then measure with higher reliability, even if the surface echo is weaker than the false echo, see Figure 7-21. www.Emerson.com...

  • Page 95: Add A New False Echo Suppression

    Do not suppress false echoes located below the product surface. • Keep the number of suppressed false echoes to a minimum. It is recommended to suppress false echoes using Rosemount Radar Master Plus. Procedure 1. Select Service Tools → Echo Curve. www.Emerson.com...
  • Page 96 It may be necessary to suppress new false echoes at a later stage when objects have become visible due to surface movement. Related information Amplitude threshold Delete a false echo suppression Prerequisites It is recommended to suppress false echoes using Rosemount Radar Master Plus. Procedure 1. Select Service Tools → Echo Curve. www.Emerson.com...

  • Page 97: Suppress A False Echo Manually

    • To change a suppression, select the cell you want change and type the new value. • To delete a suppression, select the row you want to delete, and then select Delete. 4. Select Save. 5. Select Back. www.Emerson.com...

  • Page 98: Handling Disturbances At Top Of Tank

    (typical for flat tank bottoms), the transmitter may lock on the bottom echo and report a false level measurement (empty tank). If the application requires, the Tank Bottom Projection settings can be user-defined. Figure 7-24 illustrates an example of the Tank Bottom Projection when the tank is being emptied. www.Emerson.com...
  • Page 99 Enable the Bottom echo visible when tank is empty parameter if a bottom echo is visible when tank is empty (i.e. for flat tank bottoms). The bottom echo will then be treated as a disturbance echo to facilitate tracking of weak surface echoes close to the tank bottom. www.Emerson.com...
  • Page 100 Procedure 1. Select Configure → Level Setup → Advanced. 2. Under More Advanced Options, select Empty Tank Handling. 3. In the Empty Tank Handling list, select User Defined. 4. Select the Bottom echo visible when tank is empty check box. 5. Select Save. www.Emerson.com...

  • Page 101: Handling Strong Double Bounce Echoes

    The surface echo is required to suppress the double bounce. If the surface echo enters the Upper Null Zone, there is no product surface reference and the double bounce might be interpreted as the surface echo. The Double Bounce Handling function is only available in Rosemount Radar Master Plus. www.Emerson.com...

  • Page 102: Double Bounce Offset

    Returned products must include a copy of the required Safety Data Sheet (SDS) for each substance. Emerson representatives will explain the additional information and procedures necessary to return goods exposed to hazardous substances.

  • Page 103: Appendix A Specifications And Reference Data

    Radar performance may be affected if it is configured for certain local radio spectrum regulations. Refers to inaccuracy according to IEC 60770-1 when excluding installation dependent offset. See the IEC 60770-1 standard for a definition of radar specific performance parameters and if applicable corresponding test procedures. www.Emerson.com...

  • Page 104: Accuracy Over Measuring Range

    The measuring range is limited to 49 ft. (15 m) for the lens antenna with a ¾-in. threaded process connection. Also note that a combination of adverse process conditions, such as heavy turbulence, foam, and condensation, together with products with poor reflection may affect the measuring range. www.Emerson.com...

  • Page 105: Built-In Lightning Protection

    Part 15 of the FCC Rules • Industry Canada RSS 211 • Other country approvals Related information Product certifications A.2  Functional specifications A.2.1  General Field of application Continuous level measurements on a broad range of liquids, slurries, and solids. www.Emerson.com...

  • Page 106: Measurement Principle

    0 - 100% relative humidity, non-condensing Turn-on time < 60 s A.2.2  Functional safety The Rosemount 3408 Level Transmitter is IEC 61508 certified to: • Low and high demand: Type B element • SIL 2 for random integrity @ HFT=0 •...

  • Page 107: Bluetooth Connectivity

    Level and distance: ft., in., m, cm, mm • Level rate: ft/s, in./min, in./s, m/h, m/s • Volume: ft , in. , yd , US gal, imperial gal, barrel (bbl), m • Temperature: °F, °C • Signal strength: mV www.Emerson.com...

  • Page 108: Output Variables

    -76 to 392 °F (-60 to 200 °C) Lens antenna -76 to 392 °F (-60 to 200 °C) ATAP lens antenna -4 to 176 °F (-20 to 80 °C) Note The temperature range is -40 to 176 °F (-40 to 80 °C) for open air applications. www.Emerson.com...

  • Page 109: Ambient Temperature

    Storage temperature -40 to 176 °F (-40 to 80 °C) A.2.8  Flange rating ASME 316 SST according to ASME B16.5 Table 2-2.2 1.4404 according to EN 1092-1 material group 13E0 316 SST according to JIS B2220 material group No. 2.2 www.Emerson.com...

  • Page 110: Conditions Used For Flange Strength Calculations

    Recommended pressure: 100 to 115 psi (7 to 8 bar) • Inlet/outlet connection: BSPP (G) ⅜-in. • Air consumption: 252 gal/min at 65 psi (955 l/min at 4.5 bar) A.3  Physical specifications A.3.1  Housing and enclosure Electrical connections Two cable/conduit entries (½-14 NPT or M20 x 1.5) www.Emerson.com...
  • Page 111 PTFE sealing: PTFE fluoropolymer • Threaded process connection: Anodized aluminum 6082-T6 or 6061-T6 • O-ring: FKM • Antenna extension for open air: PTFE fluoropolymer with carbon filler The transmitter meets IP 68 at 9.8 ft. (3 m) for 45 minutes. www.Emerson.com...

  • Page 112: Dimensional Drawings

    Figure A-5: Lens Antenna with ¾-in. Threaded Process Connection 4.06 (103) 3.94 (100) 6.93 6.46 (176) (164) 10.00 9.53 (254) (242) 1.06 (27) 0.28 (7) Ø 0.67 (17) A. LCD display option B. No LCD display C. NPT or BSPP (G) Dimensions are in inches (millimeters). www.Emerson.com...
  • Page 113 Figure A-6: Lens Antenna with 1- or 1½-in. Threaded Process Connection 3.94 (100) 4.06 (103) 6.93 6.46 (176) (164) 10.12 9.65 (257) (245) 1.06 (27) 0.35 (9) Ø 0.91 (23) A. LCD display option B. No LCD display C. NPT or BSPP (G) Dimensions are in inches (millimeters). www.Emerson.com...
  • Page 114 C. BSPP (G) 1½-in. D. Antenna extension for open air installations Dimensions are in inches (millimeters). Figure A-8: ATAP Lens Antenna with Mounting Bracket 2.80 (71) 5.00 (127) 4.72 (120) A. Pipe diameter, max 2.5 (63.5) Dimensions are in inches (millimeters). www.Emerson.com...

  • Page 115: Flushing Connection Rings

    ¼-in. NPT 3-in. ANSI 3.60 (91.4) 5.00 (127.0) ¼-in. NPT 4-in. ANSI/DN100 3.60 (91.4) 6.20 (157.5) ¼-in. NPT 6-in. ANSI 3.60 (91.4) 8.50 (215.9) ¼-in. NPT DN50 2.40 (61.0) 4.00 (102.0) ¼-in. NPT DN80 3.60 (91.4) 5.43 (138.0) ¼-in. NPT www.Emerson.com...
  • Page 116 Specifications and reference data Reference Manual April 2025 00809-0100-4418 www.Emerson.com...

  • Page 117: Appendix B Configuration Parameters

    Alert Setup Measurement Recovery Signal Quality Alert High User Defined Alert Low User Defined Alert Service Tools Alerts Echo Curve Communication Verification Smart Meter Verification Proof Test Maintenance Routine Maintenance Backup Reset/Restore Upgrade Simulate Measurement Values Simulate Loop Test www.Emerson.com...
  • Page 118 High User Defined Alert Low User Defined Alert Service Tools Alerts Variables Mapped Variables Process Device Signal Quality Communication Verification Smart Meter Verification Maintenance Routine Maintenance Reset/Restore Echo Tuning Thresholds Echo Peaks Suppress Simulate Simulate Measurement Values Analog Out > Loop test www.Emerson.com...

  • Page 119: Device Setup

    The variable selected for percent of range auxiliary. 100% auxiliary Value corresponding to 100 percent range of variable selected for percent of range auxiliary. 0% auxiliary Value corresponding to 0 percent range of variable selected for percent of range auxiliary. www.Emerson.com...

  • Page 120: Analog Output

    The 20 mA point should be set below the reduced accuracy zone at the top of the tank. Figure B-3: Example of Range Value Settings A. Reduced accuracy zone B. 100% (20 mA) C. Zero Level D. Level measurement range 0-100% E. 0% (4 mA) www.Emerson.com...

  • Page 121: Display Orientation

    Set up the LCD display B.2.5  Security Write protection The Rosemount 3408 supports both software and hardware write protection. SW write protection The transmitter can be write protected (with or without a password) to prevent unintentional changes. HW write protection The security switch is used to prevent changes to the configuration data.

  • Page 122: Safety Instrumented System

    The date field can be used for any purpose, for example to save the date of the last configuration change. Descriptor The 16-character descriptor field can be used for any purpose. Message The 32-character message field can be used for any purpose, such as providing details of the last configuration change. www.Emerson.com...

  • Page 123: Level Setup

    The transmitter configuration includes setting the tank geometry parameters, see Figure Figure B-5. Figure B-4: Tank Geometry, Basic Dimensions A. Device Reference Point B. Reference Height C. Zero Level D. Vertical cylinder E. Cubical tank F. Horizontal cylinder G. Spherical tank www.Emerson.com...
  • Page 124 UIP (Rosemount Radar Master Plus) Tank shape Select a tank shape that corresponds to the actual tank. If the actual tank does not match one of the pre-defined tank shapes, then select Other (e.g. level measurements of sumps, basins, or ponds). www.Emerson.com...

  • Page 125: Tank Top Shape

    D. Flat, inclined (for vertical cylinder) E. Flat, inclined (for cubical tank) Tank end shape For a horizontal tank, form of the tank ends. Same shape is assumed at both ends. Figure B-8: Tank End Shape A. Dome B. Flat www.Emerson.com...

  • Page 126: Reference Height

    The Reference Offset parameter can be used to specify your own reference point, for example when the measured level by the transmitter should correspond with the level value obtained by hand-dipping. www.Emerson.com...

  • Page 127: Bottom Offset

    If the Zero Level is not located at the tank bottom, then enter a Bottom Offset. It is needed for the transmitter to know the position of the tank bottom echo and for correct volume calculations. www.Emerson.com...
  • Page 128 The height of the shape on tank top (typically from shape floor to cap top, measured at cylinder center line). Bottom shape height The height of the shape at tank bottom (typically from shape floor to shape bottom, measured at cylinder center line). www.Emerson.com...
  • Page 129 Default. B.3.3  Volume Volume calculation method Select if the volume measurement should be calculated from the configured tank dimensions or a strapping table. www.Emerson.com...

  • Page 130: Strapping Table

    Name of the scaled variable. It is recommended to enter a short name to fit into the LCD display area. Scaled variable unit Units of measurement of the scaled variable. Number of scaled values Number of values in the scaled variable table. Input variable Select the input variable to use for scaled variable calculation. www.Emerson.com...

  • Page 131: Antenna Type

    100% (20 mA) 1 000 2 000 3 000 4 000 5 000 6 000 7 000 A. Upper Null Zone B. Disturbance echo C. Amplitude threshold D. Product surface echo Related information Change the upper null zone www.Emerson.com...

  • Page 132: User Defined Variable Setup

    Name of the user defined variable. It is recommended to enter a short name to fit into the LCD display area. Input register Enter the number of the input register that contains value of the user defined variable. See Table B-4 for a list of suitable input registers. The default value is 20210 (Distance). www.Emerson.com...

  • Page 133: More Advanced Options

    Empty tank handling The Empty Tank Handling functions handle situations when the surface echo is close to the tank bottom. www.Emerson.com...

  • Page 134: Tank Bottom Projection

    Related information Use tank bottom projection Echo tracking Surface echo tracking Use these settings to configure how the transmitter should keep track of the surface. These are advanced settings. Normally, they should not be changed. www.Emerson.com...

  • Page 135: Double Surface Handling

    Handling strong double bounce echoes Overfill prevention The Overfill Prevention function adds an extra layer of protection to prevent tank overfills. The function uses an independent echo logic algorithm to identify the surface echo close to the top of the tank. www.Emerson.com...

  • Page 136: Alert Setup

    Signal Quality is a measure of the product surface echo amplitude compared to the surface threshold and noise. The Signal Quality spans from 0 to 10. A low value means that there is a risk for the noise peak to be mistaken for the product surface peak. www.Emerson.com...
  • Page 137 A high and low alert may be established to output an alert message when the measurement readings exceed the specified limits. Variable Select the device variable to use for the alert. Limit The value that will trigger the alert. www.Emerson.com...
  • Page 138 A. User Defined Alert B. Time C. Low Alert ON D. Deadband E. Limit F. The alert is active when the level value falls below the alert limit. G. The alert turns off when the value rises above the deadband. www.Emerson.com...
  • Page 139 Reference Manual 00809-0100-4418 April 2025 www.Emerson.com...
  • Page 140 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. The "Bluetooth" word mark and logos are registered trademarks owned by Bluetooth SIG, Inc.

Table of Contents