Endress+Hauser Liquicap M FMI51 User manual

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

Liquicap M FMI51 HART
2 Endress+Hauser
Order code:
Ext. ord. cd.:
Ser. no.:
www.endress.com/deviceviewer Endress+Hauser
Operations App
XXXXXXXXXXXX
XXXXX-XXXXXX
XXX.XXXX.XX
Serial number
1.
3.
2.
A0023555

Liquicap M FMI51 HART Table of contents
Endress+Hauser 3
Table of contents
1 About this document ................ 6
1.1 Document function ..................... 6
1.2 Document conventions ................... 6
1.2.1 Safety symbols .................. 6
1.2.2 Electrical symbols ................ 6
1.2.3 Tool symbols .................... 6
1.2.4 Symbols for
certain types of information and graphics 7
1.3 Documentation ........................ 8
1.3.1 Technical Information ............. 8
1.3.2 Certificates ..................... 8
1.4 Registered trademarks .................. 10
2 Basic safety instructions ........... 11
2.1 Requirements for the personnel ........... 11
2.2 Workplace safety ...................... 11
2.3 Operational safety ..................... 11
2.3.1 Ex-area ....................... 11
2.4 Product safety ........................ 11
3 Incoming acceptance and product
identification ..................... 12
3.1 Incoming acceptance ................... 12
3.2 Product identification ................... 12
3.3 Storage and transport .................. 12
4 Mounting ......................... 13
4.1 Quick installation guide ................. 13
4.2 Mounting requirements ................. 14
4.2.1 Mounting the sensor ............. 14
4.2.2 Support with marine approval (GL) .. 15
4.3 Measuring condition ................... 15
4.4 Minimum probe length for nonconductive
media < 1 µS/cm ...................... 16
4.5 Installation examples ................... 16
4.5.1 Rod probes .................... 16
4.6 Probe with separate housing ............. 19
4.6.1 Extension heights: separate
housing ...................... 19
4.6.2 Wall bracket ................... 21
4.6.3 Wall mounting ................. 21
4.6.4 Pipe mounting ................. 22
4.6.5 Shortening the connecting cable .... 22
4.7 Installation instructions ................. 23
4.7.1 Probe installation ............... 24
4.7.2 Aligning the housing ............. 25
4.7.3 Sealing the probe housing ......... 25
4.8 Post-installation check .................. 25
5 Electrical connection .............. 26
5.1 Connecting requirements ................ 26
5.1.1 Potential equalization ............ 26
5.1.2 Electromagnetic compatibility
(EMC) ........................ 26
5.1.3 Cable specification ............... 26
5.1.4 Connector ..................... 27
5.1.5 Supply voltage .................. 27
5.2 Wiring and connecting .................. 27
5.2.1 Connection compartment ......... 27
5.2.2 Terminal assignment ............. 29
5.2.3 Connecting HART with other supply
units ......................... 30
5.3 Post-connection check .................. 30
6 Operation options ................. 31
6.1 Overview of operation options ............ 31
6.1.1 Display and operating elements at
the FEI50H electronic insert ....... 31
6.1.2 Operation via the optional display
and operating module ............ 32
6.1.3 The operating menu ............. 34
6.2 Error messages ....................... 37
6.3 Locking and unlocking configuration ....... 37
6.3.1 Key locking .................... 37
6.3.2 Key unlocking .................. 37
6.3.3 Software locking ................ 37
6.4 Resetting to factory setting .............. 38
6.4.1 Using the reset ................. 38
6.4.2 Effects of a reset ................ 38
6.4.3 Performing a reset ............... 38
6.5 Operation via FieldCare Device Setup ....... 38
6.5.1 Function scope ................. 38
6.5.2 Source for device description files .... 38
7 Commissioning .................... 39
7.1 Installation and function check ............ 39
7.2 Basic setup without the display or operating
module ............................. 39
7.2.1 Function switch: position 1.
Operation ..................... 40
7.2.2 Function switch: position 2. Carry
out empty calibration - for empty
tanks ........................ 40
7.2.3 Function switch: position 2. Carry
out empty calibration - for almost
empty tanks ................... 40
7.2.4 Function switch: position 3. Carry
out full calibration - for full tanks .... 41
7.2.5 Function switch: position 3. Carry
out full calibration - for almost full
tanks ........................ 41
7.2.6 Function switch: position 4.
Measuring modes ............... 42
7.2.7 Function switch: position 5.
Measuring range ................ 42

Table of contents Liquicap M FMI51 HART
4 Endress+Hauser
7.2.8 Function switch: position 6. Proof
test - self-test .................. 43
7.2.9 Function switch: position 7. Reset -
restore factory settings ........... 43
7.2.10 Function switch: position 8.
Download or upload sensor DAT
(EEPROM) .................... 43
7.3 Menu: "Basic setup". Commissioning with
display and operating module ............. 44
7.3.1 Initial commissioning ............ 44
7.3.2 Function: "Basic setup" ............ 46
7.3.3 Function: "Medium property" ....... 47
7.3.4 Operating mode: "Empty calibr." and
function - "Wet" ................. 47
7.3.5 Operating mode: "Full calibr." and
function - "Wet" ................. 48
7.3.6 Operating mode: "Empty calibr." and
function - "Dry" ................. 48
7.3.7 Operating mode: "Full calibration"
and function - "Dry" for conductive
and nonconductive media ......... 49
7.3.8 Operating mode: "Empty calibration"
and function - "Dry" for "Interface" or
"Unknown" medium properties ...... 50
7.3.9 Operating mode: "Full calibration"
and function - "Dry" for "Interface" or
"Unknown" medium properties ...... 50
7.3.10 Function: "Output damping" ........ 50
7.4 Menu: "Safety setting" ................... 50
7.4.1 Function: "Safety settings" ......... 52
7.4.2 Function: "Safety settings" ......... 52
7.4.3 Function: "Safety settings" ......... 53
7.4.4 Function: "Operating mode" ........ 53
7.4.5 Function: "Safety settings" ......... 54
7.4.6 Function: "Output on alarm" ........ 54
7.4.7 Function: "Proof test" - self-test ..... 55
7.5 Menu: "Linearization" ................... 55
7.5.1 Function: "Linearization" .......... 57
7.5.2 Function: "Linearization" .......... 60
7.6 Menu: "Output" ........................ 62
7.6.1 Submenu: "Extended calibr." ........ 63
7.6.2 Submenu: "HART setting" .......... 64
7.6.3 Menu: "Simulation" .............. 65
7.7 Menu: "Device properties" ................ 65
7.7.1 Submenu: "Display" ............... 68
7.7.2 Submenu: "Diagnosis" ............. 69
7.7.3 Submenu: "System parameters" ...... 70
7.8 Operation ........................... 71
7.9 FieldCare: operating program from Endress
+Hauser ............................ 71
7.9.1 FieldCare ..................... 72
7.9.2 Interface measurement ........... 72
7.9.3 Dry calibration for interface
measurement .................. 73
7.9.4 Wet calibration for interface
measurement .................. 74
8 Diagnostics and troubleshooting ... 76
8.1 Diagnostic information via LEDs ........... 76
8.1.1 Green LED flashing .............. 76
8.1.2 Red LED flashing ................ 76
8.2 System error messages .................. 76
8.2.1 Error signal .................... 76
8.2.2 Last errors .................... 76
8.2.3 Types of error .................. 76
8.2.4 Error codes .................... 77
8.3 Possible measuring errors ............... 78
8.3.1 Measured value is incorrect ........ 78
8.4 Firmware history ...................... 79
9 Maintenance ...................... 80
9.1 External cleaning ...................... 80
9.2 Cleaning the probe ..................... 80
9.3 Seals ............................... 80
9.4 Endress+Hauser services ................ 80
10 Repair ............................ 81
10.1 General notes ........................ 81
10.2 Spare parts .......................... 81
10.3 Repairing Ex-certified devices ............. 81
10.4 Replacement ......................... 82
10.5 Return .............................. 82
10.6 Disposal ............................ 82
10.6.1 Removing the measuring device ..... 82
10.6.2 Disposing of the measuring device ... 82
11 Accessories ....................... 83
11.1 Protective cover ....................... 83
11.2 Commubox FXA195 HART ............... 83
11.3 HAW56x surge arrester ................. 83
11.4 Weld-in adapter ...................... 83
12 Technical data .................... 84
12.1 Probe .............................. 84
12.1.1 Capacitance values of the probe ..... 84
12.1.2 Additional capacitance ........... 84
12.1.3 Probe lengths for continuous
measurement in conductive liquids .. 84
12.2 Input ............................... 85
12.2.1 Measured variable ............... 85
12.2.2 Measuring range ................ 85
12.3 Output ............................. 85
12.3.1 Output signal .................. 85
12.3.2 Signal on alarm ................. 85
12.3.3 Linearization ................... 85
12.4 Performance characteristics .............. 86
12.4.1 Reference operating conditions ..... 86
12.4.2 Maximum measured error ......... 86
12.4.3 Influence of ambient temperature ... 86
12.4.4 Influence of process pressure ....... 86
12.4.5 Switch-on behavior .............. 86
12.4.6 Measured value reaction time ...... 86
12.4.7 Response time .................. 87

Liquicap M FMI51 HART Table of contents
Endress+Hauser 5
12.4.8 Accuracy of factory calibration ...... 87
12.4.9 Resolution ..................... 87
12.5 Operating conditions: Environment ........ 88
12.5.1 Ambient temperature range ....... 88
12.5.2 Climate class ................... 88
12.5.3 Vibration resistance ............. 88
12.5.4 Shock resistance ................ 88
12.5.5 Degree of protection ............. 88
12.6 Operating conditions: Process ............. 89
12.6.1 Process temperature range ........ 89
12.6.2 Process pressure limits ........... 90
12.6.3 Pressure and temperature derating .. 91
Index .................................. 93

About this document Liquicap M FMI51 HART
6 Endress+Hauser
1 About this document
1.1 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.
1.2 Document conventions
1.2.1 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.
NOTICE
This symbol contains information on procedures and other facts which do not result in
personal injury.
1.2.2 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.
1.2.3 Tool symbols
Phillips head screwdriver

Liquicap M FMI51 HART About this document
Endress+Hauser 7
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
Forbidden
Procedures, processes or actions that are forbidden
Tip
Indicates additional information
Reference to documentation
Reference to graphic
Notice or individual step to be observed
1.
,
2.
,
3.
Series of steps
Result of a step
Operation via operating tool
Write-protected parameter
1, 2, 3, ...
Item numbers
A, B, C, ...
Views
Safety instructions
Observe the safety instructions contained in the associated Operating Instructions

About this document Liquicap M FMI51 HART
8 Endress+Hauser
1.3 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
XA00327F
• II 1/2 Ex ia/db IIC T6...T3 Ga/Gb
II 1/2 Ex ia/db eb IIC T6...T3 Ga/Gb
II 1/2 D Ex ia /tb IIIC T90 °C Da/Db
XA00328F
• Ga/Gb Ex ia IIC T3...T6
Zone 20/21 Ex iaD 20/Ex tD A21 IP65 T 90 °C
IECEx BVS 08.0027X
XA00423F
• II 3 G Ex nA IIC T6 Gc
II 3 G Ex nA nC IIC T5 Gc
II 3C D Ex tc IIIC T100 °C Dc
XA00346F
INMETRO safety instructions
Liquicap M FMI51
• Ex d [ia Ga] IIB T3...T6 Ga/Gb
Ex d [ia Ga] IIC T3...T6 Ga/Gb
Ex de [ia Ga] IIC T3...T6 Ga/Gb
XA01171F
• Ex ia IIC T* Ga/Gb
Ex ia IIB T* Ga/Gb
Ex ia IIIC T90 °C Da/Db IP66
XA01172F
NEPSI safety instructions
• Liquicap M FMI51
Ex ia IIC/IIB T3...T6 Ga/Gb
XA00417F
• Liquicap M FMI51
Ex d ia IIC/IIB T3/T4/T6 Ga/Gb
Ex d e ia IIC/IIB T3/T4/T6 Ga/Gb
XA00418F
• Liquicap M FMI51
Ex nA IIC T3...T6 Gc
Ex nA nC IIC T3...T6 Gc
XA00430F
Overfill protection DIBt (WHG)
Liquicap M FMI51
ZE00265F
Functional safety (SIL2)
Liquicap M FMI51
SD00198F

Liquicap M FMI51 HART About this document
Endress+Hauser 9
Control Drawings (CSA and FM)
• Liquicap M FMI51
FM IS
ZD00220F
• Liquicap M FMI51
CSA IS
ZD00221F
• Liquicap M FMI51
CSA XP
ZD00233F

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

Liquicap M FMI51 HART Basic safety instructions
Endress+Hauser 11
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.

Incoming acceptance and product identification Liquicap M FMI51 HART
12 Endress+Hauser
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.
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 Liquicap M 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 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 in such a way as to protect it against
impact. The original packaging offers the best protection for this. The permitted storage
temperature is –50 to +85 °C (–58 to +185 °F) ±5 °C (±8 °F).

Liquicap M FMI51 HART Mounting
Endress+Hauser 13
4 Mounting
4.1 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).
A 1) B 2)
G½ < 80 Nm (59.0 lbf ft)
G¾ < 100 Nm (73.7 lbf ft)
G1 < 180 Nm (132.8 lbf ft)
G1½ < 500 Nm (368.7 lbf ft)
1) Thread size
2) Torque
Aligning the housing
1 → 2 → 3
...270°
A0042107 A0042108 A0042109
Tighten the clamping screw with torque < 1 Nm (0.74 lbf ft).

Mounting Liquicap M FMI51 HART
14 Endress+Hauser
4.2 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
• 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)
• the probe is at a sufficient distance from the agitator if using the probe in agitator
tanks
• the rod probes with a ground tube are used in the event of severe lateral load
≥500 (19.7)
A0040392
Unit of measurement mm (in)

Liquicap M FMI51 HART Mounting
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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.
Rod probes with a diameter of 10 to 16 mm (0.39 to 0.63 in) and a length
≥ 1 m (3.3 ft) have to be supported, see →  15
L/4
L/2
L
300 (11.8)
A0040416
Unit of measurement mm (in)
L/4 ¼ probe length
L/2 ½ probe length
L Active probe length
Example of calculating distances
• probe length L = 2 m (6.6 ft)
• L/4 = 500 mm (19.7 in)
• L/2 = 1 m (3.3 ft)
Measured from the end of the probe rod = 300 mm (11.8 in).
4.3 Measuring condition
Measuring range L1 is possible from the tip of the probe to the process connection.
Particularly suited for small containers.
Use a ground tube for nonconductive media.

Mounting Liquicap M FMI51 HART
16 Endress+Hauser
≥500 (19.7)
100%
0 %
L1 L3
A0040419
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.
4.4 Minimum probe length for nonconductive media
< 1 µS/cm
The minimum probe length can be calculated using the formula:
l =
min
Δ Cmin
C ·( - 1)
s r
ε
A0040204
lmin minimum probe length
ΔCmin5 pF
Csprobe capacitance in air
εrdielectric constant, e.g. oil = 2.0
4.5 Installation examples
4.5.1 Rod probes
The probe can be installed in:
• conductive tanks made from metal
• nonconductive tanks made from plastic
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.

Liquicap M FMI51 HART Mounting
Endress+Hauser 17
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.
Damaged insulation of the probe rod causes improper measurements.
The following application examples show the vertical installation for continuous level
measurement.
A0040425
 2 A probe with the conductive tanks
A0040426
 3 A probe with the ground tube for the nonconductive tanks
A0040427
 4 A probe with the inactive length for the insulated tanks

Mounting Liquicap M FMI51 HART
18 Endress+Hauser
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

Liquicap M FMI51 HART Mounting
Endress+Hauser 19
4.6 Probe with separate housing
A
L4 ≤ 6m
--
B
L1
A0040466
 7 Connection of the probe and separate housing
A Explosive zone 1
B Explosive zone 0
L1 Rod length: max. 4 m (13 ft)
L4 Cable length
The maximum cable length L4 and rod 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.
4.6.1 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

Mounting Liquicap M FMI51 HART
20 Endress+Hauser
61 (2.4)
41 (1.61)
B
H1
75 (2.95)
41 (1.61)
B
H3
H1
H5
D
r ≥ 100
r ≥ 100
A0040471
 8 Housing side: wall mounting, pipe mounting, and sensor side. Unit of measurement mm (in)
The parameters value 1):
B parameter
• polyester housing (F16)
76 mm (2.99 in)
• stainless steel housing (F15)
64 mm (2.52 in)
• aluminum housing (F17)
65 mm (2.56 in)
H1 parameter
• polyester housing (F16)
172 mm (6.77 in)
• stainless steel housing (F15)
166 mm (6.54 in)
• aluminum housing (F17)
177 mm (6.97 in)
D parameter
• probes ⌀10 mm (0.39 in) rod
38 mm (1.5 in)
• probes ⌀16 mm (0.63 in) rod, without fully insulated inactive length
• 38 mm (1.5 in)
• threads: G¾", G1", NPT¾", NPT1", Clamp 1", Clamp 1½", Universal ⌀44 mm (1.73 in),
flange < DN50, ANSI 2", 10K50
• probes ⌀16 mm (0.63 in) rod, without fully insulated inactive length
• 50 mm (1.97 in)
• threads: G1½", NPT1½", Clamp 2", DIN 11851, flange ≥ DN50, ANSI 2", 10K50
• Probes ⌀22 mm (0.87 in) rod, with fully insulated inactive length
38 mm (1.5 in)
1) See parameters on the drawings.