Emerson Fisher FIELDVUE L2t Instruction Manual
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Emerson Fisher FIELDVUE L2t Instruction Manual

Emerson Fisher FIELDVUE L2t Instruction Manual

Liquid level controller
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Instruction Manual
D104782X012
Fisher
FIELDVUE
™
This manual applies to
Device Type
Device Revision
Firmware Revision
DD Revision
Contents
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Attaching a Vertical Displacer
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L2t Liquid Level Controller
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Figure 1. FIELDVUE L2t Liquid Level Controller
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L2t Liquid Level Controller
TRANSMITTER
HOUSING
LOCK MOUNT
HOLES
October 2023

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  • Page 1: Table Of Contents

    Instruction Manual L2t Liquid Level Controller D104782X012 October 2023 Fisher FIELDVUE L2t Liquid Level Controller ™ ™ Figure 1. FIELDVUE L2t Liquid Level Controller This manual applies to Device Type 0x1314 Device Revision Firmware Revision DD Revision Contents Introduction ....... . . Scope of Manual .

  • Page 2: Introduction

    Fisher FIELDVUE L2t liquid level controller. Scan or click code for This manual describes using the local interface or an Emerson handheld Installation Documents communicator, such as the AMS Trex Device Communicator, to setup and &...
  • Page 3 3. Converting from a threaded NPT connection to a flange connection is to be done by the end-user. Refer to Converting a Threaded NPT Connection to a Flange Connection instruction Manual Supplement (D103277X012), available at Emerson.com or from your Emerson sales office.
  • Page 4 Instruction Manual L2t Liquid Level Controller October 2023 D104782X012 Table 2. Specifications - Transmitter Input Signal Source Reference Accuracy $ 1% of output span. Includes combined effects of Hall Effect Sensor and magnet array hysteresis, linearity, and deadband Limit Switch: 2% of travel span Transmitter Output Signal Analog: 4 to 20 mA DC Repeatability...
  • Page 5 Instruction Manual L2t Liquid Level Controller D104782X012 October 2023 Table 3. EMC Summary Results - Transmitter—Immunity per EN61326-1 (1)(2) Port Phenomenon Basic Standard Test Level Test Results Electrostatic 4 kV contact IEC 61000-4-2 discharge (ESD) 8 kV air 80 to 1000 MHz @ 10V/m with 1 kHz AM at 80% Radiated EM field IEC 61000-4-3 1400 to 6000 MHz @ 3V/m with 1 kHz AM at 80%...

  • Page 6: Security

    Zero pushbutton and the Span pushbutton, located under the cover. d The FDI (Field Device Integration) or DD (Device Description) used with asset manager software such as AMS Device Manager or a handheld communicator such as Emerson Trex. D Product Operation Best Practices:...

  • Page 7: Installation

    Instruction Manual L2t Liquid Level Controller D104782X012 October 2023 d It is recommended that you set the configuration lock switch in the enabled position after configuration is complete. d Operate the device within a controlled and secured physical environment. d Operate the L2t and the FDI/DD host within a controlled and secured network environment. d Configure the FDI/DD host to allow users to have least privilege access to the L2t, providing access to only what is absolutely required to perform their job function.

  • Page 8: Attaching The Sensor To The Vessel

    Instruction Manual L2t Liquid Level Controller October 2023 D104782X012 Attaching the Sensor to the Vessel Insert the displacer end of the L2t sensor into the vessel connection and tighten enough to seal the threads. If necessary, loosen or tighten slightly to obtain the horizontal orientation shown in figure 2. Make sure that the controller case is level.

  • Page 9: Electrical Connections

    Instruction Manual L2t Liquid Level Controller D104782X012 October 2023 Electrical Connections WARNING Select wiring and/or cable glands that are rated for the environment of use (such as hazardous area, ingress protection, and temperature). Failure to use properly rated wiring and/or cable glands can result in personal injury or property damage from fire or explosion.
  • Page 10 Instruction Manual L2t Liquid Level Controller October 2023 D104782X012 Figure 4. Wiring Diagram with easy-Drive Actuator POSITION SWITCH FIELD WIRING DEVICE RECEIVING HIGH POSITION SWITCH OUTPUT (CONTACT CLOSURE) DEVICE RECEIVING LOW POSITION INDICATOR SWITCH OUTPUT (CONTACT CLOSURE) TRANSMITTER FIELD WIRING LOOP + POWER SUPPLY...

  • Page 11: Seal Certification

    Instruction Manual L2t Liquid Level Controller D104782X012 October 2023 Seal Certification The L2t transmitter is not dual-seal certified. However, the enclosure is not exposed to process pressure during normal operation, and is vented, as shown in 5. The process seal is contained in the separate mechanical sensor which can be separated from the L2t housing without disturbing the process connection.

  • Page 12: Calibration

    Instruction Manual L2t Liquid Level Controller October 2023 D104782X012 Calibration The L2t is is pre-calibrated when ordered from the factory; recalibration is generally unnecessary. However, if calibration is required for any reason, refer to the following calibration procedure. NOTICE When accessing the pushbuttons or terminals, proper means of electrostatic discharge protection is required. Failure to provide appropriate protection can cause the device to malfunction.
  • Page 13 The limit switches do not require an independent calibration; they are calibrated as part of the Zero and Span calibration. Calibration using an Emerson Handheld Communicator 1. Install the latest version of the communication software on the user interface tool.

  • Page 14: Zero Adjustment

    Configuration Note An Emerson handheld communicator can provide access to configuration and setup information, as well as various service tools. Note Trip Recovery Mode should be set to Auto. If set to Manual and the device trips on sensor out of range it will lock and remain locked until reset via DD or cycle power.
  • Page 15 Instruction Manual L2t Liquid Level Controller D104782X012 October 2023 Figure 6. Overview Overview Overview Status  Device  Mode Primary Purpose Variables  PV: Percent of Span  Temperature: Instrument Temperature  Limit Switch Status: Switch State Loop Current Short Cuts  Device Information  Calibration  Primary Purpose Variables Device includes Important information regarding the connected instrument such as device type, firmware and hardware revisions, functional options, and the HART ID identifier.
  • Page 16 Instruction Manual L2t Liquid Level Controller October 2023 D104782X012 Figure 7. Configure Configure Manual Setup Alert Setup Guided Setup See figure 8 Instrument Initial Setup Instrument Clock  Calibrate  Instrument Date  Calibrate Time Delay  Instrument Time Device Information  Tag Calibration Status  Long Tag  Descriptor  Date...
  • Page 17 Instruction Manual L2t Liquid Level Controller D104782X012 October 2023 Figure 8. Configure: Alert Setup Alert Setup See Alert Setup Section, page 21 Calibration Calibration Progress Calibration Failed Cycle Counter Temperature Cycle Counter Alert Instrument Temperature Low Alert Trigger Instrument Temperature High Travel Accumulator Alert Instrument Temperature Sensor Alert Alert Trigger...
  • Page 18 Instruction Manual L2t Liquid Level Controller October 2023 D104782X012 Figure 9. Service Tools Service Tools Active Alerts Variables Trends Maintenance See figure 10 Mapped Variables Primary Variable Primary Variable Simulate  Percent of Span Secondary Variable Secondary Variable Tertiary Variable Tertiary Variable Quaternary Variable Quaternary Variable Temperature...
  • Page 19 Instruction Manual L2t Liquid Level Controller D104782X012 October 2023 Figure 10. Service Tools: Maintenance Maintenance Time Open Log Locate Device: Locate Device  Time Open Calibration   Erase Time Open Log   Read Time Open Log  Calibrate:  Calibrate Time Delay Time Open Data  Calibration Status   Time Open Index  Calibration Date...
  • Page 20 Instruction Manual L2t Liquid Level Controller October 2023 D104782X012 Loop Current refers to the instrument’s output current of 4 .0 mA to 20.0 mA for normal operation based on array position and calibration. Alert state outputs of High (21.5 mA) and Low (3.6 mA) are displayed when the device’s travel sensor is out of range.

  • Page 21: Alert Setup

    Instruction Manual L2t Liquid Level Controller D104782X012 October 2023 Simulate provides enable/disable feature for simulation of alerts. Any alert can be simulated and viewed. Status Instrument alerts, when enabled, detect many operational and performance issues that may be of interest. If there are no alerts currently active, Status is shown as GOOD on a green background.
  • Page 22 Instruction Manual L2t Liquid Level Controller October 2023 D104782X012 Critical NVM Error indicates that configuration data affecting the critical parameters in the memory is corrupted. Cycle Counter Alert is set when the value exceeds the set Alert Trigger [expressed in percent (%)]. Reset the Cycle Counter to a value less than the alert trigger to clear the alert.

  • Page 23: Principle Of Operation

    Instruction Manual L2t Liquid Level Controller D104782X012 October 2023 Principle of Operation The operation of the L2t’s mechanical sensor is based on Archimedes’ Principle, which states that a body immersed in a liquid will be buoyed up by a force equal to the weight of the fluid being displaced. The net weight of the displacer in the liquid is transmitted to the controller and amplified by the lever arm ratio.

  • Page 24: Maintenance

    Maintenance There are no repairable or replaceable parts on the L2t liquid level controller, however the entire controller assembly can be replaced per the directions below. Contact your Emerson sales office if a replacement Lt2 controller is needed. WARNING Always wear protective clothing, gloves, and eyewear when performing any maintenance operations to avoid personal injury.
  • Page 25 Instruction Manual L2t Liquid Level Controller D104782X012 October 2023 Figure 12. Fisher L2t Controller LEVER MAGNET ASSEMBLY ZERO SPRING (KEY 7) ZERO ADJUSTMENT CONTROLLER MOUNTING SCREWS (KEY 24) ZERO ADJUSTMENT HEX NUT (KEY 5)

  • Page 26: Product Disposal Guidelines

    Instruction Manual L2t Liquid Level Controller October 2023 D104782X012 Product Disposal Guidelines When the device needs to be disposed of, consider the following aspects of device removal: D Identify whether the device can be reused in another part of the process or for testing or training purposes. D Identify what data is stored on the device and sanitize this data with the latest industry recommended methods.
  • Page 27 Instruction Manual L2t Liquid Level Controller D104782X012 October 2023...
  • Page 28 Fisher and FIELDVUE are marks owned by one of the companies in the Emerson business unit of Emerson Electric Co. Emerson and the Emerson logo are trademarks and service marks of Emerson Electric Co.

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