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Emerson Rosemount 3308 Reference Manual

Wireless guided wave radar level
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PRELIMINARY
Reference Manual
00809-XXXX-4811, Rev AA
February 2012
Rosemount 3308
Wireless Guided Wave Radar Level Transmitter
www.rosemount.com

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Summary of Contents for Emerson Rosemount 3308

  • Page 1 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA February 2012 Rosemount 3308 Wireless Guided Wave Radar Level Transmitter www.rosemount.com...
  • Page 2 PRELIMINARY...
  • Page 3 Process Management Sales Representative. NOTICE The Rosemount 3308 and all other wireless devices should be installed only after the Smart Wireless Gateway has been installed and is functioning properly. Wireless devices should also be powered up in order of proximity from the Smart Wireless Gateway, beginning with the closest.
  • Page 4 PRELIMINARY Failure to follow these installation guidelines could result in death or serious injury: • Only qualified personnel should perform the installation Explosions could result in death or serious injury: Installation of this transmitter in an explosive environment must be in accordance with the appropriate local, national, and international standards, codes, and practices.

  • Page 5: Table Of Contents

    Rosemount 3308 ........
  • Page 6 Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Free Space ......... . . 4-9 Recommended Mounting Position .
  • Page 7 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Network Connection Status Screens ..... . . 6-5 Diagnostic Button Screen Sequence (continued)....6-6 Alerts .
  • Page 8 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 TOC-4...

  • Page 9: Section 1 Safety Messages

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Section 1 Introduction Safety Messages ....... . . page 1-1 Manual Overview .

  • Page 10: Manual Overview

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 MANUAL OVERVIEW This manual provides installation, configuration and maintenance information for the Rosemount 3308 transmitter. Section 2: Transmitter Overview • Theory of operation • Application examples • System architecture •...

  • Page 11: Service Support

    To expedite the return process outside of the United States, contact the nearest Emerson Process Management representative. Within the United States, call the Emerson Process Management Instrument and Valves Response Center using the 1-800-654-RSMT (7768) toll-free number. This center, available 24 hours a day, will assist you with any needed information or materials.
  • Page 12 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012...

  • Page 13: Warnings

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Section 2 Transmitter Overview Safety Messages ....... . . page 2-1 Theory of Operation .

  • Page 14: Rosemount 3308

    Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 ROSEMOUNT 3308 Features of the Rosemount 3308 Wireless Guided Wave Radar include: • An installation-ready solution that provides a variety of mounting options, transmitter configurations, and switches • Flexibility to meet your most demanding applications •...

  • Page 15: Theory Of Operation

    Guided wave radar technology in combination with advanced signal processing make the Rosemount 3308 transmitter suitable for a wide range of applications.
  • Page 16 Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Boiling conditions with vapor and turbulence For these applications the Coaxial probe is particularly suitable. Bridle applications The Rosemount 3308 transmitter is well suited for bridle applications, such as distillation columns.
  • Page 17 The Rosemount 3308 measures both level and interface level. Underground tanks The Rosemount 3308 transmitter is a good choice for underground tanks since it is installed on the tank top with the radar pulse concentrated near the probe. It can be equipped with probes that are unaffected by high and narrow openings or nearby objects.

  • Page 18: System Architecture

    00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 SYSTEM The Rosemount 3308 transmitter is battery powered with wireless communication which means the unit works completely independent. ARCHITECTURE By using the optional HART Tri-loop, it is possible to convert the HART signal to up to three additional 4-20 mA analog signals.

  • Page 19: Interface

    Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Interface Rosemount 3308 is the ideal choice for measuring the interface of oil and water, or other liquids with significant dielectric differences. Figure 2-3. Interface measurement with a Rosemount 3308 Level...
  • Page 20 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Emulsion Layers Sometimes there is an emulsion layer (mix of the products) between the two products which, depending on its characteristics, will affect interface measurements. Please consult factory for guidelines on how to handle emulsion layers.

  • Page 21: Vessel Characteristics

    VESSEL CHARACTERISTICS Heating Coils, Agitators The Rosemount 3308 transmitter is relatively insensitive to objects in the tank since the radar signal is transmitted along a probe. Avoid physical contact between probes and agitators as well as applications with strong fluid movement unless the probe is anchored. If the probe can move within 1 ft (30 cm) away from any object, such as an agitator, during operation then probe tie-down is recommended.

  • Page 22: Components Of The Transmitter

    00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 COMPONENTS OF THE The Rosemount 3308 transmitter has an aluminum transmitter housing which contains advanced electronics for signal processing. TRANSMITTER The radar electronics produces an electromagnetic pulse which is guided by the probe.

  • Page 23: Probe Selection Guide

    00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 PROBE SELECTION Use the following guidelines to choose appropriate probe for your Rosemount 3308 transmitter: GUIDE Table 2-1. Probe selection guide. G=Good, NR=Not Recommended, AD=Application Dependent (consult factory) Coaxial Rigid Twin Lead Flexible Twin Lead...

  • Page 24: Transition Zones

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Transition Zones The measuring range depends on probe type and properties of the product. The Upper Transition Zone is the minimum measurement distance between the upper reference point and the product surface. The Upper Transition Zone varies between 4 - 20 in.

  • Page 25: Service Support

    To expedite the return process outside of North America, contact your Emerson Process Management representative, Within the United States, call the Emerson Process Management Response Center toll-free number 1 800 654 7768. The center, which is available 24 hours a day, will assist you with any needed information or materials.
  • Page 26 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 2-14...

  • Page 27: Safety Messages

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Section 3 Wireless Configuration Safety Messages ....... . . page 3-1 Wireless Considerations .

  • Page 28: Wireless Considerations

    CONSIDERATIONS General The Wireless Guided Wave Radar Transmitter has the capability to measure level, distance, interface level or volume. The Rosemount 3308 converts the measurement data into mapped variables and diagnostic information that are transmitted through a wireless signal. Power Up Sequence The Smart Wireless Gateway (Gateway) should be installed and functioning properly before any wireless field devices are powered.

  • Page 29: Mechanical

    Black Power Module; please order model number 701PBKKF. Field communication with this device requires a HART-based Field Communicator using the correct Rosemount 3308 Wireless DD. Field communicator connections are located on the terminal block. The correct DD for the available protocol should be selected.

  • Page 30: Electrical

    Rosemount 3308 February 2012 Electrical The Rosemount 3308 Wireless Guided Wave Radar transmitter is self-powered. The Black Power Module contains two "C" size primary lithium/thionyl chloride batteries. Each battery contains approximately 2.5 grams of lithium, for a total of 5 grams in each Power Module. Under normal conditions, the battery materials are self-contained and are not reactive as long as the batteries and the Power Module are maintained.

  • Page 31: Power Module Installation

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 POWER MODULE NOTE Wireless devices should be powered up in order of proximity from the Smart INSTALLATION Wireless Gateway, beginning with the closest device to the Smart Wireless Gateway. This will result in a simpler and faster network installation.

  • Page 32: Device Configuration

    HART communication terminals, then connect the Power Module to CONFIGURATION power the unit for configuration. The Rosemount 3308 transmitter will receive any HART communication from a handheld Field Communicator or AMS Wireless Configurator. When using a Field Communicator, any configuration changes must be sent to the transmitter using the Send key (F2).

  • Page 33: Ams

    00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Right click on the Rosemount 3308 transmitter and select Configure. When the menu opens, select Join Device to Network and complete the method to enter the Network ID and Join Key. Field Communicator Connect the field communicator leads to the COMM terminals on the terminal block as shown in Figure 3-7.
  • Page 34 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012...

  • Page 35: Safety Messages

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Section 4 Installation Safety messages ....... . . page 4-1 Installation Procedure .
  • Page 36 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Electrical shock can result in death or serious injury: • Avoid contact with the leads and terminals. High voltage that may be present on leads can cause electrical shock. Probes covered with plastic and/or with plastic discs may generate an ignition-capable level of electrostatic charge under certain extreme conditions.

  • Page 37: Installation Procedure

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 INSTALLATION Follow these steps for proper installation: PROCEDURE Review Installation Considerations (see page 4-5) Mount the transmitter (see page 4-11) Make sure covers and cable/conduit connections are tight. Power Up the...

  • Page 38: Before You Install

    Electronic boards are electrostatically sensitive. Failure to observe proper handling precautions for static-sensitive components can result in damage to the electronic components. Do not remove the electronic boards from the Rosemount 3308 transmitter. NOTE To ensure long life for your radar transmitter, and to comply with hazardous location installation requirements, tighten covers on both sides of the electronics housing.

  • Page 39: Mounting Considerations

    Before installing the Rosemount 3308 transmitter, consider specific mounting requirements, vessel characteristics and process characteristics. CONSIDERATIONS Process Connection The Rosemount 3308 transmitter has a threaded connection for easy mounting on the tank roof. It can also be mounted on a nozzle by using different flanges. Threaded Connection Figure 4-1.
  • Page 40 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Flange Connection on Nozzles Figure 4-2. Mounting in nozzles D1 = min. diameter D2 = min. diameter with Upper Null Zone adjustment The transmitter can be mounted in nozzles by using an appropriate flange. It is recommended that the nozzle size is within the dimensions given in Table 4-1.

  • Page 41: Installation Of Single Lead Probes In Non-Metallic Tanks

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Installation of Single For optimal single lead probe performance in non-metallic tanks the probe must be mounted with a metal flange, or screwed in to a metal sheet Lead Probes in (d>8 in./200 mm) if the threaded version is used.

  • Page 42: Mounting In Still Pipes/By-Pass Pipes

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Mounting in Still In order to prevent the probe from contacting the bridle wall when replacing displacers or installing in pipes, centering discs are available for the Rigid pipes/by-pass pipes Single, Flexible Single and Flexible Twin Lead probes.

  • Page 43: Free Space

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Free Space For easy access to the transmitter make sure that it is mounted with sufficient service space. For maximum measurement performance the transmitter should not be mounted too close to the tank wall or other objects in the tank.

  • Page 44: Recommended Mounting Position

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Recommended Mounting When finding an appropriate mounting position for the transmitter the conditions of the tank must be carefully considered. The transmitter should be Position mounted so that the influence of disturbing objects is reduced to a minimum.

  • Page 45: Mechanical Installation

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 MECHANICAL Mount the transmitter with flange on a nozzle on top of the tank. The transmitter can also be mounted on a threaded connection. Make sure only INSTALLATION qualified personnel perform the installation.
  • Page 46 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Figure 4-8. Tank connection with flange. 1. Place a gasket on top of the tank flange. 2. Lower the transmitter and probe with flange into the tank. Transmitter head 3. Tighten the bolts.

  • Page 47: Shortening The Probe

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Shortening the Probe Flexible Twin/Single Lead 1. Mark off the required probe length. Add at least 1.6 in. (40 mm) to the required probe length to be inserted into the weight.
  • Page 48 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Coaxial To cut a coaxial probe do the following: Centering piece 1. Insert the centering piece. (The centering piece is delivered from factory and should be used to prevent the spacers centering the rod from coming loose).

  • Page 49: Anchoring

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Anchoring In turbulent tanks it may be necessary to fix the probe. Depending on the probe type different methods can be used to guide the probe to the tank bottom. This may be needed in order to prevent the probe from hitting the tank wall or other objects in the tank, as well as preventing a probe from breaking.
  • Page 50 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Coaxial probe. The Coaxial probe can be guided by a tube welded on the tank bottom. Tubes are customer supplied. Make sure that the probe can move freely in order to handle thermal expansion.

  • Page 51: Mounting A Centering Disc For Pipe Installations

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Mounting a Centering Flexible Single/Twin Lead probe Disc for Pipe Installations Centering disc 1. Mount the centering disc at the end of the weight. 2. Make sure that the tab washer is...

  • Page 52: Lcd Display

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 LCD DISPLAY NOTE! Do not remove the instrument cover in explosive environments when the circuit is live. General If the LCD display is ordered in the transmitter model number (option code M5), it will be shipped attached to the transmitter.

  • Page 53: Ground The Transmitter

    Rosemount 3308 February 2012 GROUND THE The Rosemount 3308 Wireless Guided Wave Radar transmitter operates with the housing grounded or floating. Floating systems can cause extra noise that TRANSMITTER may affect many types of readout devices. If the signal appears noisy or erratic, grounding at a single point may solve the problem.
  • Page 54 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 4-20...

  • Page 55: Safety Messages

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Section 5 Start-Up/Commissioning Safety messages ....... . . page 5-1 Device Network Configuration .

  • Page 56: Device Network Configuration

    Figure 5-1. Figure 5-1. Gateway Network Settings Right click on the Rosemount 3308 transmitter and select Configure. When the menu opens, select Join Device to Network and complete the method to enter the Network ID and Join Key.

  • Page 57: Configuration Parameters

    00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 CONFIGURATION The Rosemount 3308 transmitter can be configured for level, volume, interface level, and interface distance measurements. PARAMETERS The Rosemount 3308 transmitter can be pre-configured according to the ordering specifications in the Configuration Data Sheet.
  • Page 58 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Tank Height The Tank Height is the distance from the Upper Reference Point to the bottom of the tank. The transmitter measures the distance to the product surface and subtracts this value from the Tank Height to determine the level.
  • Page 59 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Upper Null Zone This parameter should only be changed if there are measurement problems in the upper part of the tank. Such problems may occur if there are disturbing objects close to the probe. By setting the Upper Null Zone, the measuring range is reduced.

  • Page 60: Volume Configuration

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Volume Configuration For volume calculations you can choose one of the standard tank shapes or the strapping option. Choose None if volume calculation is not used. Tank Type You can choose one of the following options: •...
  • Page 61 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Standard Tank Shapes Figure 5-6. Standard tank shapes Vertical Cylinder Vertical Cylinder tanks are specified by Diameter and Height. Diameter Height Horizontal Cylinder Horizontal Cylinders are specified by Diameter Diameter and Height.

  • Page 62: Configuration Usinga Field Communicator

    00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 CONFIGURATION USING This section describes how to configure the Rosemount 3308 transmitter by using a Field Communicator. A HART Communicator may also be used. A FIELD COMMUNICATOR For information on all the capabilities, refer to the Field Communicator Product Manual (Document No.

  • Page 63: Basic Configuration

    February 2012 BASIC CONFIGURATION This section describes the various HART commands used to configure the Rosemount 3308 transmitter for level measurements. The transmitter outputs a digital HART wireless signal. Transmitter Variables You may assign up to four transmitter variables. Typically, the primary variable...

  • Page 64: Probe Type

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Probe Type The transmitter automatically makes an initial calibration based on the type of TO BE HART Comm probe that is used. This parameter is pre-configured at factory and only needs ADDED to be set if the probe is changed to another type.

  • Page 65: Measurement Mode

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Measurement Mode Normally the Measurement Mode does not need to be changed. The TO BE HART Comm transmitter is pre-configured according to the specified model: ADDED Table 5-2. Measurement Mode...
  • Page 66 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Figure 5-8. Range Values Upper Reference Point Upper Transition Zone Upper Range Value (URV) Product Level Interface Level Lower Range Value (LRV) Lower Transition Zone 5-12...

  • Page 67: Volume Configuration

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 VOLUME CONFIGURATION Transmitter Variables Select the Volume option in order to configure the transmitter for volume TO BE HART Comm measurements. ADDED Volume Units Choose one of the following units:...

  • Page 68: Verify Operation

    3. In the Smart Wireless Gateway's integrated web interface 4. Using the AMS® Suite Wireless Configurator or AMS Device Manager If the Rosemount 3308 was configured with the Network ID and Join Key, and sufficient time has passed, the transmitter will be connected to the network. If Network ID and Join Key were not configured, please see “Troubleshooting”...

  • Page 69: Verification By Gateway

    Configurator window as illustrated in Figure 5-11. For HART Wireless Wireless Configurator transmitter communication, a 3308A DD is required. To obtain the latest DD, visit the Emerson Process Management Easy Upgrade site at: http://www2.emersonprocess.com/en-US/documentation/deviceinstallkits. Figure 5-11. AMS Wireless Configurator Screen...

  • Page 70: Troubleshooting

    Smart Wireless Gateway. The Network ID and Join Key in the device must match the Network ID and Join Key of the Gateway. Reference the instructions given on page 5-2 for information on configuring the Network ID and Join Key of the Rosemount 3308. 5-16...

  • Page 71: Safety Messages

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Section 6 Operation and Maintenance Safety Messages ....... . . page 6-1 LCD Screen Messages .

  • Page 72: Lcd Screen Messages

    LCD SCREEN MESSAGES Startup Screen The following screens will display when the power module is first connected to the Rosemount 3308. Sequence X X X X X All Segments On: used to visually determine if X X X X x x x...

  • Page 73: Display Operation

    Diagnostic Button Detailed diagnostic information can be obtained by removing the display cover of the Rosemount 3308 transmitter, and momentarily depressing the Screen Sequence "DIAG" button. The LCD will display the diagnostic screens as shown below. Press the Diagnostic button to display the TAG, Device ID, Network ID, Network Join Status, and Device Status screens.
  • Page 74 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 A b c d e Diagnostic Button Screen 1: Tag f g h i d - X X Diagnostic Button Screen 2: Device Identification - used to determine Device ID...

  • Page 75: Network Connection Status Screens

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Network Connection One of the following network diagnostic status screens will display in the fourth position of the Diagnostic Button Screen sequence. The screen Status Screens displayed is dependent on the progress of the device in joining the wireless network.

  • Page 76: Diagnostic Button Screen Sequence (Continued)

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 n e t w k Diagnostic Button Screen 4.6: the device is attempting to join a network N E G O T Diagnostic Button Screen 4.7: the device is n e t w k connected to the network, but is in a “quarantined”...
  • Page 77 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Diagnostic Button Screen 6.2: there is a warning b o a r d which should be addressed, but should not affect the device output. w a r n Diagnostic Button Screen 7.1: the terminal voltage has dropped below level of operating limit.

  • Page 78: Alerts

    SV Measurement Electronics Temperature ALERTS The Rosemount 3308 can be configured to report alerts based on the measured variables. The Rosemount 3308 also reports diagnostic alerts when there is a device malfunction. For information on these alerts, refer to Section 6: Troubleshooting.

  • Page 79: Device Alert Configuration

    Conditions Device Alert Alert Levels Configuration The Rosemount 3308 provides 4 user configurable alerts. HI HI LO LO explain all and add image. Alert Setup There are three methods that can be used to set up these alerts using AMS Wireless Configurator or a field communicator.

  • Page 80: Power Module Replacement

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 POWER MODULE Expected Power Module life is years at reference conditions REPLACEMENT Add warnings When the Power Module needs to be replaced, remove the Power Module cover and the depleted Power Module. Replace the power module with a new Black Power Module, SmartPower™...

  • Page 81: Safety Messages

    High voltage that may be present on leads could cause electrical shock. Avoid contact with leads and terminals. Make sure the main power to the Rosemount 3308 transmitter is off and the lines to any other external power source are disconnected or not powered while wiring the gauge.

  • Page 82: Advanced Configuration

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 ADVANCED This section covers non-standard configuration. CONFIGURATION User defined Upper If you want to specify your own Upper Reference Point you can do this by setting the Calibration Offset parameter.

  • Page 83: Plotting The Measurement Signal

    This pulse is shown when the transmitter is in Measurement Mode=Level & Interface. Different amplitude thresholds are used in order to filter out unwanted signals. The following amplitude thresholds are used for the Rosemount 3308 transmitter: T1 - amplitude threshold for detection of the Reference pulse P1.
  • Page 84 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Normally the thresholds are adjusted to approximately 50% of the signal peak amplitude. To adjust the Amplitude Thresholds open the Advanced section in the RCT Project Bar and choose Device Commands>Details>Set Nominal Thresholds.

  • Page 85: Interface Measurements For Semi-Transparent Bottom Products

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Interface Measurements In interface applications where the bottom product has a low dielectric constant, or if the signal is attenuated in the upper product, the amplitude of for Semi-Transparent the reflected signal is relatively low and difficult for the transmitter to detect. In...
  • Page 86 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Figure 7-4 illustrates a situation where amplitude threshold T3 is too high. The signal amplitude peak at the interface between the upper and lower products is not detected in this case. By adjusting amplitude threshold T3, the peak at...

  • Page 87: High Level Rates

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 High Level Rates The measurement signal is filtered in order to minimize the influence of disturbing noise. In most measurement situations this does not have a noticeable effect on the response time to level changes. If high level rates occur it may however be necessary to reduce the damping value in order to allow the transmitter to respond quicker.

  • Page 88: Interface Measurements With Fully Immersed Probes

    Rosemount 3308 February 2012 Interface Measurements The Rosemount 3308 transmitter has a measurement option which makes it possible to handle interface measurements when the product level is not with Fully Immersed visible, for example in a full bridle pipe as illustrated in Figure 7-6. In this case...

  • Page 89: Service

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 SERVICE Level and Distance When calibrating the transmitter it is important that the product surface is calm and that the tank is not being filled or emptied. Calibration A complete calibration is performed in two steps: 1.

  • Page 90: Disturbances At The Top Of The Tank

    Near Zone (referred to as the region between 0-1.6 ft (0-0.5 m) below the Upper Reference Point) is normally somewhat limited. However, the Rosemount 3308 transmitter is equipped with software functionality that minimizes the Upper Transition Zone. The factory setting is normally sufficient and doesn’t need to be repeated after installation.
  • Page 91 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 To set the Upper Null Zone do one of the following: 1. Select the HART command [1, 3, 3, 1]. 2. Enter the desired value, 1. Start the Radar Configuration Tool (RCT).

  • Page 92: Amplitude Threshold Settings

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Amplitude Threshold The amplitude thresholds are automatically adjusted to appropriate values in order to filter out noise and other non-valid measurements from the Settings measurement signal. The amplitude of the measurement signal, i.e. the amplitude of the signal that is reflected by the product surface, is related to the actual dielectric constant of the product.
  • Page 93 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 By adjusting the amplitude threshold T2 the product surface is detected correctly as illustrated in Figure 7-12. Figure 7-12. Waveform plot after threshold T2 was adjusted After T2 is adjusted the product...

  • Page 94: Logging Measurement Data

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Logging Measurement To start logging do the following: Data 1. Click the Monitor icon in the RCT workspace or choose the Monitor option from the View menu. Start monitoring Log interval...

  • Page 95: Saving The Transmitter Configuration

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Saving the Transmitter The Radar Configuration Tool offers different methods to save the current transmitter configuration: Configuration • Save only the configuration specified in the Setup window. • Use the more extensive function in the Memory Map window.
  • Page 96 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 To load a setup 1. Click the Setup icon in the RCT workspace or choose the Setup option from the File menu. Open Setup 2. In the Setup window click the right mouse button and choose the Open Setup option, or from the File menu choose the Open Setup option.

  • Page 97: Removing The Transmitter Head

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Removing the Transmitter Head 1. Loosen the nut that connects the transmitter housing to the Process Seal. FLANGE VERSION 2. Carefully lift the transmitter head. 3. Make sure that the upper surface of the...

  • Page 98: Changing The Probe

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Changing the Probe Transmitter head Process Seal 1. Loosen the nut. 2. Remove the transmitter head from the old probe. 3. On the new probe, make sure that the protection plug is removed and the upper surface of the Process Seal is clean.

  • Page 99: Diagnostic Messages

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 DIAGNOSTIC MESSAGES Troubleshooting If there is a malfunction despite the absence of diagnostic messages, see Table 7-1 for information on possible causes. Table 7-1. Troubleshooting chart Symptom Possible cause Action Both P2 and P3 are detected but Interface Measurement Mode is set to “Level Only”.

  • Page 100: Errors

    • Load default database and restart LCD error code: CNFIG. is outside allowed range. the transmitter. NOTE: the default values are used • Contact Emerson customer service until the problem is solved. if the problem persists. RAM failure was detected The transmitter performs an Contact Rosemount service during startup test.

  • Page 101: Warnings

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Warnings Table 7-4 is a list of diagnostic messages that may be displayed on the Integral Display, on the Field Communicator or by the Radar Configuration Tools (RCT) software. Warnings are less serious than errors and in most cases do not result in Analog Output alarms.
  • Page 102 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 7-22...
  • Page 103 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Appendix A Reference Data Functional Specification ......page A-2 Performance Specification .

  • Page 104: Functional Specification

    • To communicate using RCT or AMS Device Manager, a HART modem is required. The HART modem is available as an RS232 or USB version (see “Accessories Rosemount 3308” on page A-20) • The transmitter can be pre-configured by selecting Options code C1 (page page A-18) and sending a completed Configuration Data Sheet (CDS).

  • Page 105: Process Temperature And Pressure Rating

    4 in. (0.1 m) for the rigid twin lead, and coaxial probes in order to distinguish the echoes of the two liquids • Sometimes there is an emulsion layer (mix of the products) between the two products which can affect interface measurements. For guidelines on emulsion situations, consult your local Emerson Process Management representative...
  • Page 106 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Table A-1. Temperature ranges for standard tank seals with different O-ring materials Tank seal with different Min. Temperature Max. Temperature O-ring material °F (°C) in air °F (°C) in air...

  • Page 107: Performance Specification

    For more information, ask your local Emerson Process Management representative. Different parameters (factors) affect the echo and therefore the maximum measuring range differs depending on application according to: •...
  • Page 108 February 2012 Coating The Rosemount 3308 has a high sensitivity due to its advanced signal processing and high signal to noise ratio, which makes it able to handle various disturbances. However, the following circumstances should be considered before mounting the transmitter.
  • Page 109 Single Lead Maximum Viscosity 500 cP 1500 cP 8000 cP Coating / Build-up Coating not recommended Thin coating allowed, but no bridging Coating allowed (1) Consult your local Emerson Process Management representative in the case of agitation/turbulence and high viscous products.

  • Page 110: Physical Specification

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 PHYSICAL SPECIFICATION Housing and Enclosure Type Dual compartment (removable without opening the tank). Electronics and cabling are separated. Two entries for conduit or cable connections. The transmitter housing can be rotated in any direction.
  • Page 111 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Total Probe Length This is defined from the upper reference point to the end of the probe (weight included, if applicable). Flange Tri-Clamp BSP/G Upper Reference Point Total Probe Length Select the probe length according to the required measuring range (the probe must be hung and fully extended through the entire distance where level readings are desired).
  • Page 112 For additional information, see the Rosemount 9901 Chamber for Process Level Instrumentation Product Data Sheet (Document Number 00813-0100-4601) Existing Chamber A Rosemount 3308 transmitter is the perfect replacement in an existing displacer chamber. Proprietary flanges are offered, enabling use of existing Replace chambers to make installation easy.
  • Page 113 February 2012 Probe Type in Chamber When installing a Rosemount 3308 transmitter in a chamber, the single lead probe is recommended. Considerations The recommended minimum chamber diameter is 4 in. (100 mm) for Single Flexible probe and 3 in. (75 mm) for the Single Rigid probe.
  • Page 114 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Table A-8. Required probe length in chambers Chamber Manufacturer Probe Length Major torque-tube manufacture (249B, 249C, 2449K, 249N, 259B) Displacer+9 in. (229 mm) Masoneilan (Torque tube operated), proprietary flange Displacer+8 in. (203 mm) Other - torque tube Displacer+8 in.

  • Page 115: Dimensional Drawings

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 DIMENSIONAL DRAWINGS TO BE ADDED Proprietary Flanges Raised Face Recessed Face Dimensions are in inches (millimeter). D: Outside diameter B1: Flange thickness with gasket surface B2: Flange thickness without gasket surface...

  • Page 116: Ordering Information

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 ORDERING INFORMATION 3308 Wireless Guided Wave Radar Level Transmitter Ordering Information ★ The Standard offering represents the most common options. The starred options (★) should be selected for best delivery.
  • Page 117 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Material of Construction: Process Connection / Probe Probe Type Standard Standard 316L SST (EN 1.4404) ★ Expanded Alloy C-276 (UNS N10276). With plate design if flanged version. Up to class 600, PN 63.
  • Page 118 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Special Special Probe Use when ordering a Spare Transmitter Head Probe Length Units Standard Standard ★ English (feet, inch) ★ Metric (meters, centimeters) Special Not applicable Probe Length (feet / meters)
  • Page 119 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 ★ JIS 20K Flange ★ Proprietary Flange, for use with proprietary flange process connection type Expanded ANSI Ratings ASME B16.5 Class 2500 Flange EN Ratings EN1092-1 PN250 Flange EN1092-1 PN320 Flange...
  • Page 120 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Wireless Options Update Rate, Operating Frequency and Protocol Standard Standard ★ User Configurable Update Rate, 2.4 GHz DSSS, IEC 62591 (WirelessHART) Omnidirectional Wireless Antenna and SmartPower Solutions Standard Standard External Antenna, Adapter for Black Power Module (I.S. Power Module Sold Separately) ★...
  • Page 121 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Expanded Short weight, Length: 2 in. (50 mm), Diameter: 1.5 in. (37.5 mm). For limited space below measuring range. Weight Assembly Options for Flexible Single Probes Standard Standard Weight not mounted on probe. Recommended for cutting probe in field.
  • Page 122 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Accessories Rosemount 3308 Code Process Connection - Size/Type (consult factory for other process connections) (1) (2) Centering discs Outer Diameter Standard Standard ★ 03300-1655-0001 Kit, 2-in. Centering Disc, SST, Rigid Single 1.8 in.

  • Page 123: Safety Messages

    PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Appendix B Product Certifications Safety Messages ....... . . page B-1...
  • Page 124 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 High voltage that may be present on leads could cause electrical shock: Avoid contact with leads and terminals. Make sure the main power to the Radar Transmitter is off and the lines to any other external power source are disconnected or not powered while wiring the transmitter.
  • Page 125 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 Index ....7-20 ....2-13...
  • Page 126 PRELIMINARY Reference Manual 00809-XXXX-4811, Rev AA Rosemount 3308 February 2012 ... . . 7-15 Save Setup Setup ..7-15 Save configuration ..2-13 Shipping Considerations .
  • Page 127 PRELIMINARY...
  • Page 128 The Emerson logo is a trademark and service mark of Emerson Electric Co. Rosemount and the Rosemount logotype are registered trademarks of Rosemount Inc. PlantWeb is a registered trademark of one of the Emerson Process Management group of companies. Asset Management Solutions is a trademark of Emerson Process Management.

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