Endress+Hauser Liquicap M FMI51 HART Operating Instructions Manual
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Endress+Hauser Liquicap M FMI51 HART Operating Instructions Manual

Capacitive level measurement
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BA01978F/00/EN/02.20
71483666
2020-06-01
Valid as of version
01.03.zz
Products
Operating Instructions
Liquicap M
FMI51 HART
Capacitive Level Measurement
Solutions
Services

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Summary of Contents for Endress+Hauser Liquicap M FMI51 HART

  • Page 1 Products Solutions Services BA01978F/00/EN/02.20 71483666 2020-06-01 Valid as of version 01.03.zz Operating Instructions Liquicap M FMI51 HART Capacitive Level Measurement...
  • Page 2 Liquicap M FMI51 HART Order code: XXXXX-XXXXXX Ser. no.: XXXXXXXXXXXX Ext. ord. cd.: XXX.XXXX.XX Serial number www.endress.com/deviceviewer Endress+Hauser Operations App A0023555 Endress+Hauser...

  • Page 3: Table Of Contents

    Liquicap M FMI51 HART Table of contents Table of contents 5.1.2 Electromagnetic compatibility About this document ....6 (EMC) ......26 Document function .
  • Page 4 7.3.7 Operating mode: "Full calibration" Endress+Hauser services ....80 and function - "Dry" for conductive and nonconductive media ..49 Repair .
  • Page 5 Liquicap M FMI51 HART Table of contents 12.4.8 Accuracy of factory calibration ..87 12.4.9 Resolution ..... 87 12.5 Operating conditions: Environment .

  • Page 6: About This Document

    About this document Liquicap M FMI51 HART About this document Document function These Operating Instructions contain all the information that is required in various phases of the life cycle of the device: from product identification, incoming acceptance and storage, to mounting, connection, operation and commissioning through to troubleshooting, maintenance and disposal.

  • Page 7: Symbols For Certain Types Of Information And Graphics

    Liquicap M FMI51 HART About this document Flat blade screwdriver Torx screwdriver Allen key Open-ended wrench 1.2.4 Symbols for certain types of information and graphics Permitted Procedures, processes or actions that are permitted Preferred Procedures, processes or actions that are preferred...

  • Page 8: Documentation

    About this document Liquicap M FMI51 HART Documentation 1.3.1 Technical Information Liquicap M FMI51 TI01484F 1.3.2 Certificates ATEX safety instructions Liquicap M FMI51 • II 1/2 G Ex ia IIC T3...T6 Ga/Gb II 1/2 G Ex ia IIB T3...T6 Ga/Gb II 1/2 D Ex ia IIIC T90 °C Da/Db...
  • Page 9 Liquicap M FMI51 HART About this document Control Drawings (CSA and FM) • Liquicap M FMI51 FM IS ZD00220F • Liquicap M FMI51 CSA IS ZD00221F • Liquicap M FMI51 CSA XP ZD00233F Endress+Hauser...

  • Page 10: Registered Trademarks

    About this document Liquicap M FMI51 HART Registered trademarks HART ® Registered trademark of the FieldComm Group, Austin, USA TRI CLAMP ® Registered trademark of Alfa Laval Inc., Kenosha, USA Endress+Hauser...

  • Page 11: Basic Safety Instructions

    It meets general safety standards and legal requirements. It is compliant with the EC directives listed in the device-specific EC Declaration of Conformity. Endress+Hauser confirms this by affixing the CE mark to the device. Endress+Hauser...

  • Page 12: Incoming Acceptance And Product

    • the serial number on the nameplate into the Endress+Hauser Operations App or use the Endress+Hauser Operations App to scan the 2-D matrix code (QR Code) on the nameplate Order Code.:...

  • Page 13: Mounting

    Liquicap M FMI51 HART Mounting Mounting Quick installation guide A probe installation A0040388 1. Screw the probe onto the proper place. 2. Fasten the probe with proper torque in accordance with the thread size (see table below). G½ < 80 Nm (59.0 lbf ft) G¾...

  • Page 14: Mounting Requirements

    Mounting Liquicap M FMI51 HART Mounting requirements 4.2.1 Mounting the sensor The Liquicap M FMI51 can be installed from the top or from the bottom. Make sure that: • the probe is not installed in the area of the filling curtain •...

  • Page 15: Support With Marine Approval (Gl)

    Liquicap M FMI51 HART Mounting 4.2.2 Support with marine approval (GL) Conductive or nonconductive support can be provided for fully insulated rod probes. Partially insulated rod probes may only be supported with insulation at the uninsulated end of the probe.

  • Page 16: Minimum Probe Length For Nonconductive Media < 1 Μs/Cm

    Mounting Liquicap M FMI51 HART 100% ≥ 500 (19.7) A0040419 Unit of measurement mm (in) Measuring range Inactive length When installing in a nozzle, use inactive length (L3). The 0 % and 100 % calibration can be inverted. Minimum probe length for nonconductive media <...
  • Page 17 Liquicap M FMI51 HART Mounting If the probe is installed in a plastic tank, then a probe with the ground tube must be used. The probe housing must be grounded. A fully insulated rod probe may be neither shortened nor extended.
  • Page 18 Mounting Liquicap M FMI51 HART A0040428  5 A probe with ground tube and inactive length for mounting nozzles A0040429  6 A probe fully insulated with clad flange for aggressive media Endress+Hauser...

  • Page 19: Probe With Separate Housing

    Liquicap M FMI51 HART Mounting Probe with separate housing L4 ≤ 6m A0040466  7 Connection of the probe and separate housing Explosive zone 1 Explosive zone 0 Rod length: max. 4 m (13 ft) Cable length The maximum cable length L4 and rod length L1 cannot exceed 10 m (33 ft).
  • Page 20 Mounting Liquicap M FMI51 HART r ≥ 100 61 (2.4) 75 (2.95) r ≥ 100 A0040471  8 Housing side: wall mounting, pipe mounting, and sensor side. Unit of measurement mm (in) The parameters value B parameter • polyester housing (F16) 76 mm (2.99 in)

  • Page 21: Wall Bracket

    Liquicap M FMI51 HART Mounting H5 parameter • probes ⌀10 mm (0.39 in) rod 66 mm (2.6 in) • probes ⌀16 mm (0.63 in) rod, without fully insulated inactive length • 66 mm (2.6 in) • threads: G¾", G1", NPT¾", NPT1", Clamp 1", Clamp 1½", Universal ⌀44 mm (1.73 in), flange <...

  • Page 22: Pipe Mounting

    Mounting Liquicap M FMI51 HART 4.6.4 Pipe mounting The maximum pipe diameter is 50.8 mm (2 in). 1 → A0042318 A0042321 4.6.5 Shortening the connecting cable NOTICE Risk of damage to connections and cable. ‣ Make sure that neither the connecting cable nor the probe is turning with the pressing screw! Recalibration must be performed before commissioning.

  • Page 23: Installation Instructions

    Liquicap M FMI51 HART Mounting 7 → 8 → A0042117 A0042118 A0042119 gn/ye A0040734  9 Cable connections External screening (not required) Strand black (bk) (not required) Coaxial cable with central core a screening Solder the red (rd) strand with the central core of the coaxial cable (probe)

  • Page 24: Probe Installation

    Mounting Liquicap M FMI51 HART A0040476 4.7.1 Probe installation Probe with thread Cylindrical threads G½, G¾, G1, G1½ To be used with the elastomer fiber seal supplied or another chemically resistant seal. Make sure that the temperature resistance of a seal is correct.

  • Page 25: Aligning The Housing

    Liquicap M FMI51 HART Mounting A0040477 Spring washer 4.7.2 Aligning the housing The housing can be rotated 270 ° to align with the cable entry. To prevent moisture penetration, route the connecting cable downwards in front of the cable gland and secure it with a cable tie.

  • Page 26: Electrical Connection

    Electrical connection Liquicap M FMI51 HART Electrical connection Before connecting the power supply, note the following: • the supply voltage must match the data specified on the nameplate • switch off the supply voltage before connecting the device • connect the potential equalization to the ground terminal on the sensor When using the probe in hazardous areas, the relevant national standards and the information in the safety instructions (XA) must be observed.

  • Page 27: Connector

    Liquicap M FMI51 HART Electrical connection Cable entries • nickel-plated brass ⌀d = 7 to 10.5 mm (0.28 to 0.41 in) • synthetic material ⌀d = 5 to 10 mm (0.2 to 0.38 in) • stainless steel ⌀d = 7 to 12 mm (0.28 to 0.47 in) 5.1.4...
  • Page 28 Electrical connection Liquicap M FMI51 HART Ex d protection • aluminum housing F13 • stainless steel housing F27 • aluminum housing T13, with the separate connection compartment Gas-tight process seal • aluminum housing F13 • stainless steel housing F27 • aluminum housing T13, with the separate connection compartment...

  • Page 29: Terminal Assignment

    Liquicap M FMI51 HART Electrical connection A0040637 1. Unscrew the housing cover. 2. Remove the housing cover. 3. Release the cable gland. 4. Insert the cable. 5.2.2 Terminal assignment 2-wire, 4 to 20 mA with HART The twin-core connecting cable is connected to the screw terminals with conductor cross-section 0.5 to 2.5 mm...

  • Page 30: Connecting Hart With Other Supply Units

    Electrical connection Liquicap M FMI51 HART 5.2.3 Connecting HART with other supply units A0040750  10 Remote control via HART protocol Transmitter power supply unit e.g. RN221N with communication resistor Connection output for Commubox FXA191, FXA195 Computer with control software (DeviceCare or FieldCare, AMS Device Manager, SIMATIC PDM)

  • Page 31: Operation Options

    Liquicap M FMI51 HART Operation options Operation options Overview of operation options This device can operate with: • the operating elements at the FEI50H electronic insert • the display and operating module • the HART protocol with Commubox FXA195 and FieldCare operating program 6.1.1...

  • Page 32: Operation Via The Optional Display And Operating Module

    Operation options Liquicap M FMI51 HART • 5: Measuring range select the measuring range in pF for: - measuring range probe length < 6 m (20 ft) corresponds to 2 000 pF - measuring range probe length > 6 m (20 ft) corresponds to 4 000 pF •...
  • Page 33 Liquicap M FMI51 HART Operation options Symbols on the display Operating mode of the device • User user parameters can be edited • Lock all parameters are locked • Scrollbar scroll up or down to access more functions Locking state of the currently displayed parameter •...

  • Page 34: The Operating Menu

    Operation options Liquicap M FMI51 HART A0032710 Increases the contrast of the display module Decrease contrast A0032711 Decreases the contrast of the display module Locking and unlocking A0032712 Locks the device against parameter changes Press all three keys to unlock the device 6.1.3...
  • Page 35 Liquicap M FMI51 HART Operation options The second position refers to the position is out of function The third position refers to the individual functions within the function group Launching menus The display automatically switches to the main screen with the measured value, if the submenu is not chosen or the navigation key is not pressed for 15 minutes.
  • Page 36 Operation options Liquicap M FMI51 HART Selecting a function and subfunction If the function level has been reached, it is possible to navigate through the functions with  and . The current values of all the related subfunctions are displayed.

  • Page 37: Error Messages

    Liquicap M FMI51 HART Operation options A0040582  15 The marker jumps to the next position. A0040583  16 The marker jumps back to the previous position. A0040584  17 The current position and all positions to the right are deleted.

  • Page 38: Resetting To Factory Setting

    6.5.1 Function scope FDT-based plant asset management tool from Endress+Hauser. It can configure all smart field devices in a system and helps you manage them. By using the status information, it is also a simple but effective way of checking their status and condition.

  • Page 39: Commissioning

    Liquicap M FMI51 HART Commissioning Commissioning The device is operated via the electronic insert, the display or with FieldCare. If a display is attached to the electronic insert, the function keys  or  and the Mode switch at the electronic insert are deactivated. All other settings can be made using the function keys on the display or with FieldCare.

  • Page 40: Function Switch: Position 1. Operation

    Commissioning Liquicap M FMI51 HART 4...20mA 4.0 mA A0040485  18 FEI50H electronic insert  Green LED - operational status Mode switch Red LED - fault  Current pick-off 4 to 20 mA 7.2.1 Function switch: position 1. Operation In normal operation, the function switch must be set to position 1.

  • Page 41: Function Switch: Position 3. Carry Out Full Calibration - For Full Tanks

    Liquicap M FMI51 HART Commissioning The lower current value can be adjusted with the  and  keys. The following must also be considered: • the lower current value means that the tank is empty, 0 % is 4 mA.

  • Page 42: Function Switch: Position 4. Measuring Modes

    Commissioning Liquicap M FMI51 HART 2. Press  or  key for 2 s. 3. Connect the multimeter to the current pick-off. 4. Set the ordered electric current value < 20 mA. 5. Release the key.  The full calibration is saved.

  • Page 43: Function Switch: Position 6. Proof Test - Self-Test

    Liquicap M FMI51 HART Commissioning 7.2.8 Function switch: position 6. Proof test - self-test Before and after the automatic proof test, it is essential to check whether the level value displayed corresponds to the actual level value When the self-test is activated, the current output is set to 4 mA and follows a ramp function up to 22 mA.

  • Page 44: Menu: "Basic Setup". Commissioning With Display And Operating Module

    Commissioning Liquicap M FMI51 HART 2. Press the  key to start uploading from the sensor to the electronic insert.  The green LED flashes for 2 s, confirming your entry. The device restarts. Menu: "Basic setup". Commissioning with display and...
  • Page 45 Liquicap M FMI51 HART Commissioning 0% / 4mA A0040521 Customer specified 0% level (empty tank) Factory setting for 0% level (empty tank) Factory setting for 100% level (full tank) Customer specified 100% level (full tank) Configure the settings in the "Basic setup" menu: The factory settings are shown in bold.

  • Page 46: Function: "Basic Setup

    Commissioning Liquicap M FMI51 HART Basic setup • function: Basic setup subfunction: - Medium property: no buildup, buildup - Cal. type: Dry, Wet • function: Medium property • subfunction: Medium property - Conductive - Nonconductive - interface - unknown • subfunction: DC value - Value •...

  • Page 47: Function: "Medium Property

    Liquicap M FMI51 HART Commissioning Subfunction: "Cal. type" In the "Dry" "Cal. type" empty and full calibration can be carried out without the probe being in contact with the liquid. The calibration values can be entered directly in units of length.

  • Page 48: Operating Mode: "Full Calibr." And Function - "Wet

    Commissioning Liquicap M FMI51 HART Subfunction: "Confirm cal." In this function, empty calibration is confirmed and the "Measure capacity" currently measured is assigned to the percentage level value entered as "Value empty". 7.3.5 Operating mode: "Full calibr." and function - "Wet"...

  • Page 49: Operating Mode: "Full Calibration" And Function - "Dry" For Conductive And Nonconductive Media

    Liquicap M FMI51 HART Commissioning L3 for G1½ = 25 mm (0.98 in) L3 for G <1½ = 19 mm (0.75 in) Plug: 10 mm (0.39 in) rod = 10 mm (0.39 in) 16 mm (0.63 in) rod = 15 mm (0.59 in) 22 mm (0.87 in) rod = 15 mm (0.59 in)

  • Page 50: Operating Mode: "Empty Calibration" And Function - "Dry" For "Interface" Or "Unknown" Medium Properties

    Commissioning Liquicap M FMI51 HART 7.3.8 Operating mode: "Empty calibration" and function - "Dry" for "Interface" or "Unknown" medium properties Subfunction: "Value empty" This field displays 0% and cannot be edited. Subfunction: "Cap. empty" Enter the capacitance value, for example calculated with CapCalc.xls.
  • Page 51 Liquicap M FMI51 HART Commissioning Safety settings • function: Safety settings • subfunction: Code - 100 • subfunction: Status - Unlocked - Locked • function: Safety settings • subfunction: Operating mode - Standard - SIL/WHG • subfunction: Output damping - 1 s •...

  • Page 52: Function: "Safety Settings

    Commissioning Liquicap M FMI51 HART 7.4.1 Function: "Safety settings" Subfunction: "Code" With this subfunction, you can lock the device against unpermitted or unintentional changes. Enter a number that is not equal 100 to lock the device. The parameters cannot be modified.

  • Page 53: Function: "Operating Mode

    Liquicap M FMI51 HART Commissioning 7.4.3 Function: "Safety settings" Subfunction: "Cap. empty" This subfunction displays the measured capacitance during empty calibration in pF. Subfunction: "Value empty" This subfunction displays the empty calibration value in %. Subfunction: "Cap. full" This subfunction displays the measured capacitance during full calibration in pF.

  • Page 54: Function: "Safety Settings

    Commissioning Liquicap M FMI51 HART 7.4.5 Function: "Safety settings" Subfunction: "Operating mode" The "Standard" or "SIL/WHG" operating mode entered is displayed here. Subfunction: "Output damping" The output damping entered is displayed here. Subfunction: "Value empty" The capacitance of the empty calibration is displayed here.

  • Page 55: Function: "Proof Test" - Self-Test

    Liquicap M FMI51 HART Commissioning Subfunction: "Output value" - only for "Output" and "User-specific" In this function, specify the user-specific value the current output should assume in an alarm condition. Value range: 3.8 to 22 mA. 7.4.7 Function: "Proof test" - self-test From version FW: V 01.03.00:...
  • Page 56 Commissioning Liquicap M FMI51 HART Linearization • function: Linearization • subfunction: Type - None - Linear - Horizontal cyl - Sphere - Pyramid bottom - Conical bottom - Angled bottom - Table • subfunction: Mode - level - Ullage • subfunction: Simulation - Sim.

  • Page 57: Function: "Linearization

    Liquicap M FMI51 HART Commissioning • function: Linearization • subfunction: Customer unit - % (percentage) - hl - dm - cm - ft - usgal - igal - kg - lb - ton - ft - mm - inch - user-spec.
  • Page 58 Commissioning Liquicap M FMI51 HART 20 mA 100 % 4 mA A0040551 The maximum tank content. Customer unit The following parameters must be specified: • the unit for the linearized value • the maximum tank contents measured in a customer unit Options: •...
  • Page 59 Liquicap M FMI51 HART Commissioning 20 mA 100 % 4 mA A0040554 The intermediate height The maximum tank content Customer unit The following parameters must be specified: • the unit for the linearized value • The intermediate height in accordance with the diagram •...

  • Page 60: Function: "Linearization

    Commissioning Liquicap M FMI51 HART 20 mA 100 % 4 mA A0040563 Filled area Empty area Subfunction: "Simulation" In this subfunction, you can simulate the level or the volume by entering a level under "Sim. level value" or a volume under "Sim. vol. value".
  • Page 61 Liquicap M FMI51 HART Commissioning • Read The table editor is opened. The existing table can be read but not edited. • Manual The table editor is opened. Table values can be entered or modified. • Semi-automat. The table editor is opened. The level value is read in automatically. The related measured value must be entered by the user.

  • Page 62: Menu: "Output

    Commissioning Liquicap M FMI51 HART Subfunction: "Max. scale" In this function, specify the maximum contents of the tank in the customer unit. Menu: "Output" You can make the following settings in the "Output" menu: The factory settings are shown in bold.

  • Page 63: Submenu: "Extended Calibr

    Liquicap M FMI51 HART Commissioning 7.6.1 Submenu: "Extended calibr." Function: "Extended calibr." In this function, you can specify the measuring range. Subfunction: "Measuring range" Specify the measuring range in this subfunction. • C = 0 to 2 000 pF for probe length < 6 m (20 ft) •...

  • Page 64: Submenu: "Hart Setting

    Commissioning Liquicap M FMI51 HART [mA] A0040572 Turn down 4 mA Turn down 20 mA Subfunction: "4 mA threshold" - for Current span = 4 to 20 mA It is possible to switch on the 4 mA threshold in this subfunction. The 4 mA threshold means that the current never is below,4 mA even if the measured value is negative.

  • Page 65: Menu: "Simulation

    Liquicap M FMI51 HART Commissioning Function: Output / Calculat. Subfunction: "Current span" In this subfunction, select the current span to which the measuring range should be mapped. Options: • 4 to 20 mA the measuring range 0 to 100 % is mapped to the 4 to 20 mA current span •...
  • Page 66 Commissioning Liquicap M FMI51 HART submenu: Display • function: Language • English • Deutsch • Francais • Espanol • Italiano • Nederlands • function: Display format • subfunction: Format Decimal ft-in-1/16" • subfunction: No of decimals - x.x - x.xx - x.xxx...
  • Page 67 Liquicap M FMI51 HART Commissioning submenu: Diagnostics • function: Actual error • subfunction: Actual error 1 - ..• subfunction: Actual error 2 - ..• subfunction: Actual error 3 - ..• function: Last error • subfunction: reset errorlist...

  • Page 68: Submenu: "Display

    Commissioning Liquicap M FMI51 HART submenu: System parameters • function: Device information • subfunction: Device designation - Liquicap-FMI5x • subfunction: Serial No. - ..• subfunction: EC Serial No. - xxxxxxxxxxx • subfunction: Device marking - FMI51- OrderCode • function: Device information •...

  • Page 69: Submenu: "Diagnosis

    Liquicap M FMI51 HART Commissioning Options: • x • x.x • x.xx • x.xxx Subfunction: "Sep. character" Select the separator for displaying decimal numbers. Options: • . (dot) • , (comma) 7.7.2 Submenu: "Diagnosis" Function: "Actual error" With this function, you can call up the list of all currently pending errors. The errors are arranged by priority.

  • Page 70: Submenu: "System Parameters

    Commissioning Liquicap M FMI51 HART Subfunction: "Min. temp." The subfunction displays the lowest temperature value measured by the device. Subfunction: "Temperature unit" The subfunction determines the temperature unit. Options: • °C • °F • K Subfunction: "Min/Max temp." The subfunction resets the "Min/Max temp."...

  • Page 71: Operation

    FieldCare: operating program from Endress+Hauser The FieldCare operating program is Endress+Hauser plant asset management tool based on FDT technology. It is possible to use FieldCare to configure all Endress+Hauser devices as well as third-party devices which support the FDT standard. The following operating systems are supported: •...

  • Page 72: Fieldcare

    FieldCare Function scope FDT-based plant asset management tool from Endress+Hauser. It can configure all smart field devices in a system and helps you manage them. By using the status information, it is also a simple but effective way of checking their status and condition.

  • Page 73: Dry Calibration For Interface Measurement

    Liquicap M FMI51 HART Commissioning calculated calibration values can be transmitted to the FEI50H electronic insert via the display or FieldCare. Capacitance interface measurement is also suitable for very pronounced emulsion layers. The emulsion layer average is always measured. 7.9.3...

  • Page 74: Wet Calibration For Interface Measurement

    Commissioning Liquicap M FMI51 HART Editing the probe and application-specific data Editing the probe and application-specific data. Click the "Probe type" button. 2. Select the probe type. 3. Enter the length probe L1 in accordance with the nameplate. 4. Enter the inactive length L3 in accordance with the nameplate.
  • Page 75 Liquicap M FMI51 HART Commissioning 2. Perform "Empty calibration 0%" regarding procedure →  44. If it is not possible to fill the tank, perform the "Empty calibration" with the probe exposed in the air, however expect a calibration inaccuracy approximately 2.5 % per meter.

  • Page 76: Diagnostics And Troubleshooting

    Diagnostics and troubleshooting Liquicap M FMI51 HART Diagnostics and troubleshooting The operating status of the device is indicated by the LEDs on the electronic insert. Diagnostic information via LEDs 8.1.1 Green LED flashing Green LED indicates operation: • flashes every 5 s the device is in the operation mode •...

  • Page 77: Error Codes

    408, A 409, A 410, A 411, A 412, A 413, A 414, A 415, A 416, A 417, A 418, A 421, A 422, A 423, A 424 Electronics defective - switch the device off and then on - if the error persists contact Endress+Hauser Service • A 116 Download error - repeat download or perform a total reset •...

  • Page 78: Possible Measuring Errors

    Diagnostics and troubleshooting Liquicap M FMI51 HART Warning codes • W103, W153 Initializing - Please wait - if the message does not disappear after a few seconds replace the electronics • W153 Initializing - if the message does not disappear after a few seconds replace the electronics •...

  • Page 79: Firmware History

    Liquicap M FMI51 HART Diagnostics and troubleshooting 3. Verify the probe. 4. Change the installation position. Do not mount probe in a filling curtain. 5. Check ground from process connection to the tank wall. R < 1 Ω. 6. For conductive media, check the probe insulation. R > 800 kΩ.

  • Page 80: Maintenance

    The intervals between seal replacement depend on the frequency of the cleaning cycles and on the fluid and cleaning temperature. Endress+Hauser services Endress+Hauser offers a wide range of services. Your Endress+Hauser Sales Center can provide detailed information on the services. Endress+Hauser...

  • Page 81: Repair

    • The measuring devices have a modular design. • Spare parts are grouped into logical kits with the associated Installation Instructions. • Repairs are carried out by Endress+Hauser Service or by appropriately trained customers. • Certified devices can only be converted to other certified devices by Endress+Hauser Service or at the factory.

  • Page 82: Replacement

    Repair Liquicap M FMI51 HART • carry out the individual test for the device • change the device only with a device certificated by Endress+Hauser • report every change and repair of the device 10.4 Replacement After replacing a Liquicap M or the electronic insert, the calibration values must be transferred to the replacement device.

  • Page 83: Accessories

    Surge arrester for limiting overvoltage in signal lines and components is described in Brief Operating Instructions: KA00130R. 11.4 Weld-in adapter All available weld-in adapters are described in the document TI00426F. The documentation is available in the Download section on Endress+Hauser web site: www.endress.com Endress+Hauser...

  • Page 84: Technical Data

    Technical data Liquicap M FMI51 HART Technical data 12.1 Probe 12.1.1 Capacitance values of the probe The basic capacitance of the probe is approximately 18 pF. 12.1.2 Additional capacitance Mount the probe at a minimum distance of 50 mm (1.97 in) from a conductive container wall: approximately 1.3 pF/100 mm (3.94 in) in the air for a rod probe...

  • Page 85: Input

    Liquicap M FMI51 HART Technical data 12.2 Input 12.2.1 Measured variable Continuous measurement of change in capacitance between the probe rod and container wall or ground tube, depending on the level of a liquid. The probe covered -> high capacitance.

  • Page 86: Performance Characteristics

    Technical data Liquicap M FMI51 HART 12.4 Performance characteristics 12.4.1 Reference operating conditions Room temperature: +20 °C (+68 °F) ±5 °C (±8 °F) Span: • standard measuring range 5 to 2 000 pF • extended measuring range 5 to 4 000 pF •...

  • Page 87: Response Time

    Liquicap M FMI51 HART Technical data 12.4.7 Response time FEI50H (4 to 20 mA / HART version 5) The response time affects the speed at which the display and the current output react to changes in the level. The factory setting for time constant τ = 1 s; 0 to 60 s can be set.

  • Page 88: Operating Conditions: Environment

    Technical data Liquicap M FMI51 HART 12.5 Operating conditions: Environment 12.5.1 Ambient temperature range • F16 housing: –40 to +70 °C (–40 to +158 °F) • remaining housing: –50 to +70 °C (–58 to +158 °F) • observe derating • use a protective cover, when operating outdoors 12.5.2...

  • Page 89: Operating Conditions: Process

    Liquicap M FMI51 HART Technical data Aluminum housing T13 with gas-tight process seal and separate connection compartment (Ex d) Protection degree: • IP66 • IP68 • NEMA 4X Separate housing Protection degree: • IP66 • IP68 • NEMA 4X 12.6 Operating conditions: Process 12.6.1...

  • Page 90: Process Pressure Limits

    Technical data Liquicap M FMI51 HART Probe with separate housing +170/ °C +120 +200/ +100 °C –80 –40 –20 –40 –60 A0040624 Ambient temperature Process temperature The permitted ambient temperature at the separate housing is the same as indicated for the compact housing.

  • Page 91: Pressure And Temperature Derating

    Liquicap M FMI51 HART Technical data 12.6.3 Pressure and temperature derating For process connections ½", ¾", 1", flanges <DN50, <ANSI 2", <JIS 10K (10 mm (0.39 in) rod) and process connections ¾", 1", flanges <DN50, <ANSI 2", <JIS 10K (16 mm (0.63 in) rod)
  • Page 92 Technical data Liquicap M FMI51 HART +50/ +200/ °C –80 –40 +200/ –1 A0040627 Process pressure Process temperature Endress+Hauser...

  • Page 93: Index

    Liquicap M FMI51 HART Index Index 0 … 9 Error signal ....... . 76 Ex-area 4 mA threshold .
  • Page 94 Index Liquicap M FMI51 HART Operating conditions: Process ....89 Operating mode: "Empty calibr." Green LED flashing ......76 Function - "Dry"...
  • Page 95 Liquicap M FMI51 HART Index Return ........82 Subfunction: "Sensor DAT stat."...
  • Page 96 *71483666* 71483666 www.addresses.endress.com...

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