Endress+Hauser Liquicap M FMI52 Technical specifications

Products Solutions Services
Brief Operating Instructions
Liquicap M
FMI52 HART
Capacitive
Continuous level measurement for liquids
KA01454F/00/EN/02.21
71510166
2021-02-01

Table of contents Liquicap M FMI52 HART
2 Endress+Hauser
Table of contents
1 About this document .............................................................. 2
1.1 Document conventions .................................................................. 2
2 Basic safety instructions .......................................................... 5
2.1 Requirements for the personnel ............................................................ 5
2.2 Workplace safety ...................................................................... 5
2.3 Operational safety ......................................................................5
2.4 Product safety ......................................................................... 5
3 Incoming acceptance and product identification ................................... 5
3.1 Incoming acceptance .................................................................... 5
3.2 Product identification ................................................................... 6
3.3 Storage and transport ................................................................... 6
4 Mounting ......................................................................... 7
4.1 Mounting requirements ................................................................. 7
4.2 Probe with separate housing ............................................................. 11
4.3 Post-installation check ................................................................. 17
5 Electrical connection ............................................................ 18
5.1 Connecting requirements ............................................................... 18
5.2 Wiring and connecting ................................................................. 20
5.3 Post-connection check ..................................................................23
6 Operation options ............................................................... 23
6.1 Overview of operation options ............................................................ 23
6.2 Operation via FieldCare Device Setup ....................................................... 28
7 Commissioning .................................................................. 28
7.1 Installation and function check ........................................................... 28
7.2 Setting the operating language ........................................................... 28
1 About this document
1.1 Document conventions
1.1.1 Safety symbols
DANGER
This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in
serious or fatal injury.
WARNING
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
serious or fatal injury.
CAUTION
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
minor or medium injury.

Liquicap M FMI52 HART About this document
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NOTICE
This symbol contains information on procedures and other facts which do not result in
personal injury.
1.1.2 Electrical symbols
Alternating current
Direct current and alternating current
Direct current
Ground connection
A grounded terminal which, as far as the operator is concerned, is grounded via a grounding
system.
Protective earth (PE)
Ground terminals that must be connected to ground prior to establishing any other
connections.
The ground terminals are located on the interior and exterior of the device:
• Interior ground terminal: protective earth is connected to the mains supply.
• Exterior ground terminal: device is connected to the plant grounding system.
1.1.3 Tool symbols
Phillips head screwdriver
Flat blade screwdriver
Torx screwdriver
Allen key
Open-ended wrench
1.1.4 Symbols for certain types of information and graphics
Permitted
Procedures, processes or actions that are permitted
Preferred
Procedures, processes or actions that are preferred
Forbidden
Procedures, processes or actions that are forbidden

About this document Liquicap M FMI52 HART
4 Endress+Hauser
Tip
Indicates additional information
Reference to documentation
A
Reference to page
Reference to graphic
Notice or individual step to be observed
1.
,
2.
,
3.
Series of steps
Result of a step
Help in the event of a problem
Visual inspection
Operation via operating tool
Write-protected parameter
1, 2, 3, ...
Item numbers
A, B, C, ...
Views
-
Hazardous area
Indicates the hazardous area
.
Safe area (non-hazardous area)
Indicates the non-hazardous area
Safety instructions
Observe the safety instructions contained in the associated Operating Instructions
Temperature resistance of the connection cables
Specifies the minimum value of the temperature resistance of the connection cables
LED not lit
LED lit
LED flashes

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2 Basic safety instructions
2.1 Requirements for the personnel
The personnel must fulfill the following requirements to carry out the necessary tasks:
‣Are trained, qualified to perform specific functions and tasks.
‣Are authorized by the plant owner or operator to perform specific tasks.
‣Are familiar with federal or national regulations.
‣Have read and understood the instructions in the manual and supplementary
documentation.
‣They follow instructions and comply with conditions.
2.2 Workplace safety
For work on and with the device:
‣Wear the required protective equipment according to federal or national regulations.
2.3 Operational safety
When performing configuration, testing, and maintenance work on the device, alternative
supervisory measures must be taken to guarantee the operational safety and process safety.
2.3.1 Ex-area
When using the measuring system in Ex-areas, the appropriate national standards and
regulations must be observed. Separate Ex-documentation, which constitutes an integral part
of this documentation, is supplied with the device. The installation procedures, connection
data and safety instructions it contains must be observed.
• Make sure that the technical staff has adequate training.
• The special measuring and safety-related requirements for the measuring points must be
observed.
2.4 Product safety
This measuring device is designed following good engineering practice to meet state-of-the-
art safety requirements, has been tested, and left the factory in a condition in which it is safe
to operate.
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.
3 Incoming acceptance and product identification
3.1 Incoming acceptance
Check whether the packaging or content is damaged. Check that the goods delivered are
complete and compare the scope of delivery with the information in your order.

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3.2 Product identification
The measuring device can be identified in the following ways:
• nameplate data
• extended order code with a breakdown of the device features on the delivery note
• the serial number from nameplates in W@M Device Viewer
(www.endress.com/deviceviewer): all of the information on the measuring device is
displayed along with an overview of the scope of the technical documentation provided
• 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
Dat.:
IP66/ IP67
NEMA4X
Order Code.:
Ser.No.:
mm
Output:
L1 =
L3 =
L =
mm
mm
1
2
3
4
5
67
9
8
10
11
12
13 14
15
A0040359
 1 The nameplate
2 Order number
3 Serial number
4 Electronic insert
5 Electronic insert output value
6 Ambient temperature at housing
7 Max. permissible pressure in a tank
8 Safety certificates
9 Functional safety
10 Probe length values
11 ATEX approval
12 WHG approval (German Water Resources Act)
13 Safety information
14 Production date
15 Bar code
3.3 Storage and transport
For storage and transportation, pack the device to protect it against impact. The original
packing offers the best protection for this. The permitted storage temperature is
–50 to +85 °C (–58 to +185 °F).

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4 Mounting
4.1 Mounting requirements
4.1.1 Mounting the sensor
The Liquicap M FMI52 can be installed vertically from above.
Make sure that:
• the probe is not installed in the area of the filling curtain
• the probe is not in contact with the container wall
• the distance from the container floor is ≥10 mm (0.39 in)
• multiple probes are mounted next to each other at the minimum distance between the
probes of 500 mm (19.7 in)
≥500 (19.7)
A0040578
Unit of measurement mm (in)
4.1.2 Measuring condition
Measuring range L1 is possible from the tip of the probe to the process connection.

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≥500 (19.7)
100%
0 %
L1 L3
A0040579
Unit of measurement mm (in)
L1 Measuring range
L3 Inactive length
When installing in a nozzle, use inactive length L3.
The 0 % and 100 % calibration can be inverted.
4.1.3 Installation examples
Rope probes
The probe can be installed from above in conductive tanks made from metal.
If the process connection of the probe is insulated from the metal tank using a seal material,
then the ground connection on the probe housing must be connected to the tank using a short
line.
• The probe may not come into contact with the container wall! Do not install probes in
the area of the filling curtain.
• If multiple probes are mounted next to each other, a minimum distance of
500 mm (19.7 in) between the probes must be observed.
• When mounting, ensure there is a good electrically conductive connection between the
process connection and the tank. Use an electrically conductive sealing band for
example.
A fully insulated rope probe may be neither shortened nor extended.
Damaged insulation of the probe rope causes improper measurements.

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The following application examples show the vertical installation for continuous level
measurement.
A0040451
 2 Rope probe
A0040452
 3 A probe with inactive length for the insulated tanks

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A0040453
 4 A probe with fully insulated inactive length for mounting nozzles
Shortening the rope
For information about the shortening kit, see Brief Operating Instructions KA061F/00.
Tensioning weight with tension
The end of the probe needs to be secured if the probe would otherwise touch the silo wall or
another part in the tank. This is what the internal thread in the probe weight is intended for.
The bracing can be conductive or insulating to the tank wall.
To avoid too high tensile load, the rope should be loose or guyed with a spring. The maximum
tensile load may not exceed 200 Nm (147.5 lbf ft).
A0040462

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4.2 Probe with separate housing
A
L4 ≤ 6m (20")
--
B
L1
A0040473
 5 Connection of the probe and separate housing
A Explosive zone 1
B Explosive zone 0
L1 Rope length: max 9.7 m (32 ft)
L4 Cable length: max. 6 m (20 ft)
The maximum cable length L4 and rope length L1 cannot exceed 10 m (33 ft).
The maximum cable length between the probe and separate housing is 6 m (20 ft). The
required cable length must be indicated in the ordering process of a Liquicap M with
separate housing.
If the cable connection has to be shortened or led through a wall, then it must be
separated from the process connection.
4.2.1 Extension heights: separate housing
The cable:
• has a minimum bending radius of r ≥ 100 mm (3.94 in)
• diameter ⌀ 10.5 mm (0.14 in)
• outer jacket made of silicone, notch resistance

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61 (2.4)
41 (1.61)
B
H1
75 (2.95)
41 (1.61)
B
H3
H1
H5
D
r ≥ 100 (3.94)
r ≥ 100 (3.94)
A0040471
 6 Housing side: wall mounting, pipe mounting, and sensor side. Unit of measurement mm (in)
Values of parameters 1):
Polyester housing (F16)
• B: 76 mm (2.99 in)
• H1: 172 mm (6.77 in)
Polyester housing (F15)
• B: 64 mm (2.52 in)
• H1: 166 mm (6.54 in)
Aluminum housing (F17)
• B: 65 mm (2.56 in)
• H1: 177 mm (6.97 in)
1) See parameters on the drawings.

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D and H5 parameter
• rope probe without fully insulated inactive length and threads G¾", G1", NPT¾", NPT1",
Clamp 1", Clamp 1½", Universal ⌀44 mm (1.73 in), flange < DN50, ANSI 2", 10K50:
• D: 38 mm (1.5 in)
• H5: 66 mm (2.6 in)
• rope probe without fully insulated inactive length and threads G1½", NPT1½", Clamp 2",
DIN 11851, flange ≥ DN50, ANSI 2", 10K50
• D: 50 mm (1.97 in)
• H5:89 mm (3.5 in)
• rope probe with fully insulated inactive length:
• D: 38 mm (1.5 in)
• H5: 89 mm (3.5 in)
4.2.2 Wall bracket
• The wall bracket is a part of the scope of delivery.
• To use the wall bracket as a drill template, the wall bracket must be first screwed to
the separate housing.
• The distance between the holes is reduced by screwing it to the separate housing.
28 (1.1)
86 (3.39)
70 (2.76)
6.2 (0.24)
3 (0.12)
A0033881
Unit of measurement mm (in)

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4.2.3 Wall mounting
1 → 2 → 3
A0042318 A0042319 A0042320
‣Screw together the wall bracket
on the tube.
‣Mark the distance between the
holes on the wall before drilling.
‣Screw the separate housing on
the wall.
4.2.4 Pipe mounting
The maximum pipe diameter is 50.8 mm (2 in).
1 → 2
A0042318 A0042321
‣Screw together the wall bracket
on the tube.
‣Screw the separate housing on a
pipe.
4.2.5 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.
The maximum connection length between the probe and the separate housing is
6 m (20 ft).
When ordering a device with separate housing, the desired length must be specified.

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If the cable connection has to be shortened or led through a wall, it must be separated from
the process connection.
Disconnecting the connection cable
Make sure that the connecting cable and the probe is not turning with the pressing
screw.
1 → 2 → 3 →
22
22
34
A0042111 A0042112 A0042113
‣Loosen the pressing screw with
an open-end wrench AF22.
‣Pull the insert seal out of the
cable gland.
‣Block the adapter disk with the
open-end wrench AF34 and
loosen the cable gland with the
open-end wrench AF22.
4 → 5 → 6 →
1.
2.
34
A0042114 A0042115 A0042116
‣Pull out the cable with the cone. ‣Remove the seal and loosen the
adapter disk with the open-end
wrench AF34.
‣Remove the snap ring with a snap
ring pliers.

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7 → 8 → 9
A0042117 A0042118 A0042119
‣Remove the blade plug from the
socket.
‣Loosen the screw to disconnect
the yellow and yellow-green
cables.
‣Loosen the nut (M4) of the blade
plug.

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gn/ye
ye
rd
bk
6
1
2
3
4
5
A0040734
 7 Cable connections
1 External screening (not required)
2 Strand black (bk) (not required)
3 Coaxial cable with central core and screening
4 Solder the red (rd) strand with the central core of the coaxial cable (probe)
5 Solder the strand with the screening of the yellow (ye) coaxial cable (ground)
6 Strand yellow and green (gn/ye) with a ring terminal
• We recommend reusing all strands with ring terminals in case of shortening the
connecting cable
• To avoid the risk of short-circuiting when the strands are not to be reused, the
connections of the new ring terminals must be insulated with a heat shrinking sleeve
• Use heat-shrink tubes to insulate all soldered joints
4.3 Post-installation check
After installing the measuring device, carry out the following checks:
 Do a visual check for damages.
 Does the device meet the specifications at the measuring point with regard to process
temperature and pressure, ambient temperature, measuring range?
 Has the process connection been tightened with the tightening torque?
 Check if the measuring points are correctly labeled.
 Is the device adequately protected against precipitation and direct sunlight?

Electrical connection Liquicap M FMI52 HART
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5 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.
Use the specified cable gland only.
5.1 Connecting requirements
5.1.1 Potential equalization
LDANGER
Risk of explosion!
‣Connect the cable screen on the sensor side only if installing the probe in Ex-areas!
Connect the potential equalization to the outer ground terminal of the housing (T13, F13,
F16, F17, F27). In the case of the stainless steel housing F15, the ground terminal can also be
located in the housing. For further safety instructions, please refer to the separate
documentation for applications in hazardous areas.
5.1.2 Electromagnetic compatibility (EMC)
Interference emission to EN 61326, Electrical Equipment Class B. Interference immunity to
EN 61326, Annex A (Industrial) and NAMUR Recommendation NE 21 (EMC).
Failure current is in accordance with NAMUR NE43: FEI50H = 22 mA.
A standard commercial instrument cable can be used.
Information on connecting shielded cables is provided in Technical Information
TI00241F "EMC test procedures".
5.1.3 Cable specification
Connect the electronic inserts by using commercially available instrument cables. If a potential
equalization is present, and the shielded instrument cables are used, connect the shielding on
both sides to optimize the shielding effect.

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B
C
3
!d
A
A0040478
A Cable entry
BElectronic insert connections: cable size max. 2.5 mm2 (14 AWG)
CThe ground connection outside the housing, cable size max. 4 mm2 (12 AWG)
⌀d Cable diameter
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 Connector
For the version with a connector M12, the housing does not have to be opened for connecting
the signal line.
PIN assignment for M12 connector
2
1
34
A0011175
1 Positive potential
2 Not used
3 Negative potential
4 Ground
5.1.5 Supply voltage
All of the following voltages are terminal voltages directly at the device:

Electrical connection Liquicap M FMI52 HART
20 Endress+Hauser
• 12.0 to 36.0 VDC in the non-hazardous area
• 12.0 to 30.0 VDC in the Ex ia hazardous area
• 14.4 to 30.0 VDC in the Ex d hazardous area
5.2 Wiring and connecting
5.2.1 Connection compartment
Depending on explosion protection, the connection compartment is available in the following
variants:
Standard protection, Ex ia protection
• polyester housing F16
• stainless steel housing F15
• aluminum housing F17
• aluminum housing F13 with gas-tight process seal
• stainless steel housing F27
• aluminum housing T13, with the separate connection compartment
Ex d protection, Gas-tight process seal
• aluminum housing F13 with gas-tight process seal
• stainless steel housing F27 with gas-tight process seal
• aluminum housing T13, with the separate connection compartment
Connecting the electronic insert to the power supply:
1.
2.
3.
4.
A0040635
1. Unscrew the housing cover.
2. Remove the housing cover.