Endress+Hauser Liquicap M FTI51 User manual

BA299F/00/en/09.06
71026592
Operating Instructions
Liquicap M FTI51, FTI52
Capacitive level measurement

Brief overview Liquicap M FMI51, FMI52
2Endress+Hauser
Brief overview
!Note!
This Operating Manual describes the installation and initial commissioning of the level measuring
device. It considers all of the functions that are necessary for a usual measuring task.
For quick and easy commissioning:
Safety instructions
Explanation of the warning symbols
For special instructions, refer to the corresponding location in the respective
chapter. The priority is indicated by the symbols for "Warning" #, "Caution" "
and "Note"!.
→Page 6
Æ
Installation
This section describes the required steps when installing the device and the
installation conditions (such as dimensions).
→Page 17
Æ
Wiring
The device is shipped, for the most part, completely wired and ready to plug in. →Page 38
Æ
Display and operating elements
This section provides an overview of the arrangement of the display and
operating elements of the device.
→Page 48
Æ
Commissioning
The "Commissioning" chapter shows you how to switch on the device and
check its functions.
→Page 50
Æ
Troubleshooting
If faults occur during operation, use the checklist to find the reason.
This section lists measures you can take yourself to remedy any faults that may
occur.
→Page 67

Liquicap M FMI51, FMI52 Brief overview
Endress+Hauser 3
Brief operating instructions
BA299Fen001
12 1
12 1
113
1 13
–+S
– + S
Nivotester FTC325 3-WIRE
Nivotester FTC325 3-WIRE
12 3
1 2 3
(+)
(+)
FEI
FEI
53
53
–
–
+
+
1
1
112
1 12
z4 d2
z4 d2
PFM
PFM
12
1 2
FEI
FEI
57S
57S
FTC325
FTC325
FTC625
FTC625
FTC470Z
FTC470Z
FTC471Z
FTC471Z
Nivotester
Nivotester
EEx ia
EEx ia
12
1 2
FEI
FEI
55
55
–
–
U– 1
U– 1
1…36 V
1…36 V
+
+
12 3
1 2 3
L+
L+
L–
L–
(+)
(+)
–
–
F
F
0.5A
0.5A
R
R
FEI
FEI
52
52
U– 10…55 V
U– 10…55 V
(DC)
(DC)
…
…
U~ 19…253 V
U~ 19…253 V
U– 19…55 V
U– 19…55 V
(AC) /
(AC) /
(DC)
(DC)
L1
L1
L+
L+
a
a
NO
NO
a
a
NO
NO
u
u
C
C
u
u
C
C
r
r
NC
NC
r
r
NC
NC
N
N
L–
L–
PE
PE
(Ground)
(Ground)
F
F
0.5A
0.5A
12
1 2
678
6 7 8
345
3 4 5
FEI5
FEI5
4
4
1. Inst
1. Inst
all probe
all probe
2. Wiring
2. Wiring
3. Connect power supply
3. Connect power supply
e.g. PLC
e.g. PLC

Brief overview Liquicap M FMI51, FMI52
4Endress+Hauser
4. Configuring the device and switching on the power supply
FEI52, FEI54, FEI55
• Green LEDs ( operational status - flashing)
• Red LED ( fault message)
• Yellow LED (✲ switching status)
•Key(–)
•Key(+)
• Mode switch (position 1–8)
– 1 : Operation
– 2: Calibration (empty/full)
– 3: Switch point shift
– 4: Measuring range setting
Pump control ∆s operation/build-up mode
– 5: Switching delay
– 6 : Self-test
– 7: Fail-safe mode (MIN/MAX)
– 8: Configuration/upload, download
L00–FTI5xxxx–07–05–xx–xx–000
!
Note!
To execute the functions in question, press
and hold the key for at least 2 seconds.
BA299Fen003
FEI53, FEI57S
• Green LED ( operational status)
• Red LED ( fault message)
• DIP switch (left),
– Standard: No alarm is output if the measuring
range is exceeded,
– : An alarm is output if the measuring range
is exceeded
• DIP switch (right), span
– Range 1: 0... 500 pF
– Range 2: 0...1600 pF L00–FTI5xxxx–07–05–xx–xx–002
-
+
+
-
FEI55
8/16mA
11...36V DC
73
5
I=16mA
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
_
_
+
+
D
D
c
c
D
D
s
s
MIN MAX
MIN MAX
down-
down-
load
load
up-
up-
load
load
0.3 s
0.3 s
1.5 s
1.5 s
5s
5s
10 s
10 s
24
2 4
8
8
16 32 p
16 32 p
f
f
500
500
1600
1600
p
p
f
f
of
of
fon
f on
1
1
7
7
3
3
5
5
Ansatz
Ansatz
Operation
Operation
Reset to factory
Reset to factory
settings
settings
Empty calibration
Empty calibration
Full calibration
Full calibration
Switchpoint
Switchpoint
adjustment
adjustment
Measurement
Measurement
range, small/big
range, small/big
Pump control
Pump control
Build-up mode
Build-up mode
Switching delay
Switching delay
Minimum/
Minimum/
maximum failsafe
maximum failsafe
Device self test
Device self test
(Proof test)
(Proof test)
press
press
for
for
up-load
up-load
press
press
for
for
down-load
down-load
Mode
Mode
Key
Key
Key
Key
press together for
press together for
20 sec.
20 sec.
press
press
press
press
press
press
2x
2 x
press for
press for
<
<
press for
press for
<
<
press together
press together
press for
press for
MIN
MIN
press for
press for
MAX
MAX
LED Signals
LED Signals
Function/Mode
Function/Mode
Symbol
Symbol
press
press
Up-Download
Up-Download
Sensor EEPROM
Sensor EEPROM
press for
press for
>
>
press for
press for
>
>
active
active
-+
FEI57S
PFM 0.....500pF
0.....500pF
Standard
Standard
0...1600pF
0...1600pF

Liquicap M FMI51, FMI52 Table of contents
Endress+Hauser 5
Table of contents
1 Safety instructions . . . . . . . . . . . . . . . . 6
1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Installation, commissioning and operation . . . . . . . . 6
1.3 Operational safety . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4 Safety conventions and icons . . . . . . . . . . . . . . . . . . 7
2 Identification . . . . . . . . . . . . . . . . . . . . 8
2.1 Device designation . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.3 Certificates and approvals . . . . . . . . . . . . . . . . . . . 16
2.4 Registered trademarks . . . . . . . . . . . . . . . . . . . . . . 16
3 Installation . . . . . . . . . . . . . . . . . . . . . 17
3.1 Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.2 Housing heights with adapter . . . . . . . . . . . . . . . . 19
3.3 Process connections . . . . . . . . . . . . . . . . . . . . . . . 19
3.4 1. Fully insulated rod probes FTI51 . . . . . . . . . . . . 21
3.5 2. Partially insulated rod probes FTI51 . . . . . . . 22
3.6 Rope probes FTI52 . . . . . . . . . . . . . . . . . . . . . . . . 23
3.7 Configuration instructions . . . . . . . . . . . . . . . . . . . 24
3.8 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.9 Installation examples . . . . . . . . . . . . . . . . . . . . . . 28
3.10 With separate housing . . . . . . . . . . . . . . . . . . . . . . 32
3.11 Probe without active build-up compensation . . . . . 34
3.12 Probe with active build-up compensation . . . . . . . . 35
3.13 Bracket for Wall and pipe mounting . . . . . . . . . . . . 36
3.14 Post-installation check . . . . . . . . . . . . . . . . . . . . . . 37
4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . 38
4.1 Connection recommendation . . . . . . . . . . . . . . . . . 38
4.2 Wiring in the housing F16, F15, F17, F13 . . . . . . . 39
4.3 Wiring in the housing T13 . . . . . . . . . . . . . . . . . . . 40
4.4 Connecting the device . . . . . . . . . . . . . . . . . . . . . . 41
4.5 Degree of protection . . . . . . . . . . . . . . . . . . . . . . . 41
4.6 Connecting the electronic insert FEI52 (DC PNP) . 42
4.7 Connecting the electronic insert FEI53 (3–WIRE) . 43
4.8 Connecting the electronic insert FEI54 (AC/DC with
relay output) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
4.9 Connecting the electronic insert FEI55 (8/16 mA) . 45
4.10 Connecting the electronic insert FEI57S (PFM) . . . 46
4.11 Post-connection check . . . . . . . . . . . . . . . . . . . . . . 47
5 Operation . . . . . . . . . . . . . . . . . . . . . . 48
5.1 Human interface and display elements for
FEI52, FEI54, FEI55 . . . . . . . . . . . . . . . . . . . . . . . 48
5.2 Human interface and display elements for
FEI53, FEI57S . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6 Commissioning . . . . . . . . . . . . . . . . . . 50
6.1 Installation and function check . . . . . . . . . . . . . . . . 50
6.2 Commissioning the electronic insert
FEI52, FEI54, FEI55 . . . . . . . . . . . . . . . . . . . . . . . 50
6.3 Commissioning with the electronic inserts
FEI53 or FEI57S . . . . . . . . . . . . . . . . . . . . . . . . . . 62
7 Maintenance . . . . . . . . . . . . . . . . . . . . 64
8 Accessories . . . . . . . . . . . . . . . . . . . . . 65
8.1 Protective cover . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
8.2 Shortening set . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
8.3 Overvoltage protection HAW569 . . . . . . . . . . . . . . 65
8.4 Weld-in adapter for universal adapter . . . . . . . . . . . 65
8.5 Weld-in adapter G ¾ . . . . . . . . . . . . . . . . . . . . . . . 66
8.6 Weld-in adapter G 1 . . . . . . . . . . . . . . . . . . . . . . . 66
9 Troubleshooting . . . . . . . . . . . . . . . . . 67
9.1 Fault diagnostics on the electronics insert . . . . . . . . 67
9.2 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
9.3 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
9.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
9.5 Firmware history . . . . . . . . . . . . . . . . . . . . . . . . . . 69
9.6 Contact addresses at Endress+Hauser . . . . . . . . . . . 69
10 Technical data . . . . . . . . . . . . . . . . . . 70
10.1 Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
10.2 Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
10.3 Performance characteristics . . . . . . . . . . . . . . . . . . 71
10.4 Operating conditions: Environment . . . . . . . . . . . . 71
10.5 Operating conditions: Process . . . . . . . . . . . . . . . . 73
10.6 Other standards and guidelines . . . . . . . . . . . . . . . 76
10.7 Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Safety instructions Liquicap M FMI51, FMI52
6Endress+Hauser
1 Safety instructions
1.1 Designated use
The Liquicap M FTI51 and FTI52 are compact capacitive level measuring devices for level limit
detection of liquids.
1.2 Installation, commissioning and operation
The Liquicap M has been safely built with state-of-the-art technology and meets all applicable
standards and EU directives. However, if it is used improperly or other than intended, it can be a
source of application-related dangers, such as product overflow due to incorrect installation or
configuration. Therefore, the installation, electrical connection, commissioning, operation and
maintenance of the measuring device only may be carried out by trained specialist personnel
authorized by the facility's owner/operator for this purpose. The specialist personnel must have read
and understood these Operating Instructions and must follow the instructions they contain.
Modifications or repairs to the device are permitted only if express permission is granted in the
Operating Manual.
1.3 Operational safety
1.3.1 Hazardous location
If the measuring system is used in potentially explosive atmospheres, the corresponding national/
federal standards and regulations must be observed. The device is accompanied by separate Ex
documentation, which is an integral part of this documentation. Observe the installation
instructions, connection data and safety instructions provided there.
• Ensure that the specialists are adequately trained.
• Observe the metrological and technical safety requirements for the measuring points.

Liquicap M FMI51, FMI52 Safety instructions
Endress+Hauser 7
1.4 Safety conventions and icons
We have defined the following safety instructions to indicate safety-related or alternative
procedures. Each instruction is identified by a corresponding pictogram.
Safety instructions
#
Warning!
This symbol indicates an action or procedure which, if not performed correctly, can result in serious
injury, a safety hazard or the destruction of the device.
"
Caution!
This symbol indicates an action or procedure which, if not performed correctly, can result in injury or
destruction of the device.
!
Note!
This symbol indicates an action or procedure which, if not performed correctly, can have an indirect
effect on operation or trigger an unexpected
response on the part of the device.
Type of protection
0
Explosion-protected, prototype-tested apparatus
If this symbol appears on the nameplate of the device, the device can be used in hazardous or non-
hazardous areas according to its approval.
-
Hazardous area
In the drawings in this Operating Manual, this symbol identifies the hazardous area. Devices located
in a potentially explosive area and lines for these devices must have corresponding explosion
protection.
.
Safe area (non-hazardous area)
In the drawings in this Operating Manual, this symbol identifies the non-hazardous area. Devices in
the non-hazardous area also must be certified if the connecting lines lead into the hazardous area.
Electrical symbols
%
Direct current
A terminal at which DC voltage is present or through which DC voltage flows.
&
Alternating current
A terminal at which AC voltage (sinusoidal) voltage is present or through which AC flows.
)
Ground connection
A grounded terminal which, from the viewpoint of the user, is grounded via a grounding system.
*
Protective ground connection
A terminal that has to be grounded before other connections can be made.
+
Equipotential connection
A connection that has to be connected to the grounding system of the plant. This can be a
potential equalization line or a radial grounding system depending on national and company codes of
practice.
Temperature resistance of the connecting cables
This means that the connecting cables must withstand a temperature of at least 85 °C.
t >85°C

Identification Liquicap M FMI51, FMI52
8Endress+Hauser
2 Identification
2.1 Device designation
2.1.1 Name plate
Refer to the name plate of the device for the following technical data:
BA299Fen004
Information on the name plate of the Liquicap M (example)
Z 65.13.xxx
SIL 250002075 - A
Dat.:
IP65/66/
NEMA4X
MWP:
Liquicap M
Order Code.:
Ser.No.:
≤Ta ≤+70°C
-40°C05/06
Made in Germany, D- 79689 Maulburg
30VDC, 4A; 125VDC, 0,2A; 253VAC, 4A
123456789
L1 = 250 mm
FEI54
FTI51 - CAA2RCJ45A1A
U: 19-253VAC (50/60Hz), 19-55VDC
25bar
Pmax.: 1,5W
L = 250 mm
XA 327 F- A
ATEX II 1/2G EEx ia IIC T6
BVS 06 ATEX E 103 X
Functional
safety
Order number
(see ordering information)
Approval No.
ATEX
WHG approval
(German Water
Resources Act)
Safety information
Max. permissible pressure
in tank
Serial number
Ambient temperature
at housing
Electronic insert
Active porbe length
Month and year
of production
Protection class

Identification Liquicap M FMI51, FMI52
16 Endress+Hauser
2.2 Scope of delivery
The scope of delivery consists of:
• The mounted device
• Where applicable, accessories (see Page 65)
Provided documentation:
• Operating Instructions
• Approval documentation, if not included in the Operating Manual.
2.3 Certificates and approvals
CE mark, Declaration of Conformity
The device is designed to meet state-of-the-art operating safety requirements, has been tested, and
has left the factory in a condition in which it is safe to operate. The device meets the relevant
standards and directives listed in the EC Declaration of Conformity and thus fulfills the legal
requirements of the EC Directives. Endress+Hauser confirms that the device has been successfully
tested by applying the CE mark.
2.4 Registered trademarks
KALREZ®, VITON®, TEFLON®
Registered trademarks of E.I. Du Pont de Nemours & Co., Wilmington, USA
Tri–Clamp®
Registered trademark of Ladish & Co., Inc., Kenosha, USA

Liquicap M FMI51, FMI52 Installation
Endress+Hauser 17
3 Installation
!Note!
All dimensions in mm.
Overview
BA299Fen005
Polyester housing
F16
Aluminium housing
F17
Stainless steel housing
F15
Aluminium
T13
housing
withaseparate connection
compartment and gas-tight
process seal
Aluminium
F13
housing
with a gas-tight
process seal
Rod/rope probe Rod/rope probe
Rod/rope probe
with inactive length
Rod/rope probe
with inactive length
Fully insulated rod/rope probe
with fully insulated inactive length
Tri-Clamp
(DN38 (1½");
DN40-51 (2"))
Clad flanges
(EN, ANSI, JIS) Hose gland
(DN50 PN40)
Thread
(G¾, NPT¾;
G1, NPT1;
G1½, NPT1½)
Flanges
(EN, ANSI, JIS)
Tri-Clamp
(DN25 (1");
DN38 (1½"))
Hygiene
(G¾, G1)
Hose gland
(DN50 PN40)
Thread
(G½, NPT½;
G¾, NPT¾;
G1, NPT1)
Flanges
(EN, ANSI, JIS)
Electronics
Hygiene
(universal adapter)
Hygiene connections
Flush-mounted seal
Hygiene connections

Installation Liquicap M FMI51, FMI52
18 Endress+Hauser
3.1 Housing
Polyester housing F16
L00–FTI5xxxx–06–05–xx–xx–001
Stainless steel housing F15
L00–FTI5xxxx–06–05–xx–xx–003
Aluminum housing F17
L00–FTI5xxxx–06–05–xx–xx–002
Aluminum housing F13
with gas-tight process seal
L00–FTI5xxxx–06–05–xx–xx–000
Aluminum housing T13
With separate connection
compartment and gas-tight
process seal
L00–FTI5xxxx–06–05–xx–xx–004
ø85
ø85
max. 76
max. 76
~97
~ 97
ø76
ø76
max. 64
max. 64
~95
~ 95
ø80
ø80
max. 60
max. 60
max. 65
max. 65
~ 105
~ 105
ø80
ø80
max. 60
max. 60
max. 65
max. 65
~1
~ 1
18
18
max. 65
max. 65
max. 97
max. 97
~ 135
~ 135

Liquicap M FMI51, FMI52 Installation
Endress+Hauser 19
3.2 Housing heights with adapter
3.3 Process connections
Polyester housing
F16
Stainless steel
housing F15
Aluminum housing
F17
Aluminum housing
F13*
Aluminum housing
with separate
connection
compartment T13*
L00–FTI5xxxx–06–05–xx–xx–044 L00–FTI5xxxx–06–05–xx–xx–046 L00–FTI5xxxx–06–05–xx–xx–045 L00–FTI5xxxx–06–05–xx–xx–048 L00–FTI5xxxx–06–05–xx–xx–047
Ordercode 21345
FTI51, FTI52
H1 144 142 152 194 202
* Housing with gas-tight process seal
H1
H1
H1
H1
H1
Thread G Thread NPT Threaded pipe joint Tri–Clamp
L00-FMI5xxxx-06-05-xx-en-007
(DIN ISO228/I)
L00-FMI5xxxx-06-05-xx-en-008
(ANSI B 1.20.1)
L00-FMI5xxxx-06-05-xx-xx-040
(DIN11851)
L00-FMI5xxxx-06-05-xx-xx-041
(ISO2852)
Rod probes ø10, rope probes
For pressures up to 25 bar 25 bar 25 bar 16 bar
Version / order code G ½ / GCJ
G ¾ / GDJ
G 1 / GEJ
NPT ½ / RCJ
NPT ¾/ RDJ
NPT 1 / REJ
DN50 PN40 / MRJ DN25 (1") / TCJ
DN38 (1½") / TJJ
Dimensions H1 = 38
H2 = 19
AF = 41
H1 = 38
H2 = 19
AF = 41
H1 = 57 H1 = 57
Surface roughness – – ≤0.8 µm ≤0.8 µm
Additional information With elastomer flat seal – – EHEDG*
Rod probes ø16, rope probes
For pressures up to 25 bar 100 bar 25 bar 100 bar 40 bar 16 bar 16 bar
Version / order code G ¾ / GDJ
G 1 / GEJ
G 1½ / GGJ NPT ¾/ RDJ
NPT 1 / REJ
NPT 1½/ RGJ DN50 PN40 / MRJ DN38 / TJJ
(1½")
DN40–51 /
TDJ
(2")
Dimensions H1 = 38
H2 = 19
AF = 41
H1 = 41
H2 = 25
AF = 55
H1 = 38
H2 = 19
AF = 41
H1 = 41
H2 = 25
AF = 55
H1 = 66 H1 = 47 H1 = 66
Surface roughness – – ≤0.8 µm ≤0.8 µm ≤0.8 µm
Additional information With elastomer flat seal – – –
* The EHEDG certificate applies only for probes with a fully insulated probe rod. It does not apply to probes with an
inactive length or an active build-up compensation.
H1
H2
AF
H1
H2
AF
H1
H1

Installation Liquicap M FMI51, FMI52
20 Endress+Hauser
Rod probes ø22, rope probes
For pressures up to 50 bar 50 bar – –
Version / order code G 1½ / GGJ NPT 1½/ RGJ – –
Dimensions H1 = 85
H2 = 25
AF = 55
H1 = 85
H2 = 25
AF = 55
––
Surface roughness – – ≤0.8 µm ≤0.8 µm
Additional information With elastomer flat seal – – –
Thread G Thread NPT Threaded pipe joint Tri–Clamp
Flanges Hygiene connection Hygiene connection Hygiene connection
L00–FMI5xxxx–06–05–xx–xx–042
(EN1092–1)
(ANSI B 16.5)
(JIS B2220)
L00–FMI5xxxx–06–05–xx–en–009
With flush-mounted seal
L00–FMI5xxxx–06–05–xx–en–010
With flush-mounted seal
L00–FMI5xxxx–06–05–xx–xx–043
Adapter 44 mm
with flush-mounted seal
Rod probes ø10, rope probes
For pressures up to Max. 25 bar (depends on flange) 25 bar 25 bar –
Version / order code EN
ANSI
JIS
/ B**
/ A**
/ K**
G ¾ / GQJ G 1 / GWJ –
Dimensions H1 = 57 H1 = 31
H2 = 26
AF = 41
H1 = 30
H2 = 27
AF = 41
–
Additional information Also clad (PTFE) Welding neck
see "Accessories"
EHEDG*
Welding neck
see "Accessories"
EHEDG*
–
Rod probes ø16, rope probes
For pressures up to Max. 100 bar (depends on flange)
Max. 50 bar (with active build-up
compensation)
– – 16 bar
(tightening torque
10 Nm)
Version / order code EN
ANSI
JIS
/ B**
/ A**
/ K**
– – Universal adapter / UPJ
Dimensions H1 = 66 – – H1 = 57
Additional information Also clad (PTFE) – – Universal adapter
see "Accessories"
Rod probes ø22, rope probes
For pressures up to Max. 50 bar (depends on flange) – – –
Version / order code EN
ANSI
JIS
/ B**
/ A**
/ K**
–––
Dimensions H1 = 110 – – –
Additional information Only clad (PTFE) – – –
* The EHEDG certificate applies only for probes with a fully insulated probe rod. It does not apply to probes with an
inactive length or an active build-up compensation.
** Wildcard for nominal diameter and permitted process pressure
Note! Only use clad flanges for aggressive liquids!
H1
H1
H2
AF
H1
H2
AF
H1

Liquicap M FMI51, FMI52 Installation
Endress+Hauser 21
3.4 1. Fully insulated rod probes FTI51
!Note!
• The active rod probe is always fully insulated (dimension L1).
• Total length of the probe beginning at the sealing surface: L = L1 + L3 (+ 125 mm with active
build-up compensation + H2*)
• Thickness of insulation for probe rod ø 10 mm = 1 mm; 16 mm = 2 mm; 22 mm = 2 mm
Rod probe Rod probe
with ground
tube
Rod probe
with inactive
length
Rod probe
with inactive
length and
ground tube
Rod probe
with fully
insulated
inactive
length
Rod probe
with active
build-up
compensation
Rod probe
with fully
insulated
inactive
length and
active
build-up
compensation
L00–FMI5xxxx–06–05–xx–xx–061 L00–FMI5xxxx–06–05–xx–xx–060
Total length (L) 100 to 4000 100 to 4000 100 to 6000 100 to 6000 300 to 4000 100 to 4125 100 to 6000
Active rod length (L1) 100 to 4000 100 to 4000 100 to 4000 100 to 4000 150 to 3000 100 to 4000 100 to 4000
Inactive rod length (L3) – – 100 to 2000 100 to 2000 150 to 1000 – 100 to 2000
Probe rod diameter 10 / 16 10 / 16 10 / 16 10 / 16 22 10 / 16 10 / 16
ø Ground tube – / – 22 / 43 – / – 22 / 43 – / – – / – – / –
ø Inactive length – / – – / – 22 / 43 22 / 43 22 – / – 22 / 43
ø Active build-up compensation
length (mm) – / – – / – – / – – / – – / – 19 / 26
125
19 / 26
125
Lateral loading capacity (Nm) at 20 °C < 15 / < 30 < 40 /< 300 < 30 /< 60 < 40 /< 300 < 25 < 30 /< 60 < 30 /< 60
For use in agitating tanks – – / X – – / X – – –
For aggressive liquids X – – – X – –
For high-viscosity liquids X – X – X X X
For use in plastic tanks – X – X – – –
For use in mounting nozzles – – X X X – X
In the event of condensate on tank
ceiling
––XXX–X
Forhigh-viscosityconductiveliquids–––––XX
X = Recommended
H2* = Thread height (important for calculating the exact probe length for process connection with thread G½, G¾, G1,
G1½.) For specifications for measurement H2, refer to Page 19 ff. under Process connections →Thread →G →H2.
L1/L3 L1/L3
NPT
G
L3
L3
L1
L1
L1
L1
L3
L3
125
125
125
125
L1
L1
L1
L1
L3
L3
L1
L1
L1
L1
L1
L1
L3
L3
H2*
H2*
Length tolerance Up to 1 m: 0 to 5 mm Up to 3 m: 0 to 10 mm Up to 6 m: 0 to 20 mm

Installation Liquicap M FMI51, FMI52
22 Endress+Hauser
3.5 2. Partially insulated rod probes FTI51
!Note!
• Total length of the probe beginning at the sealing surface: L = L1 + L3 (+ 125 mm with active
build-up compensation + H2*)
Partially
insulated rod
probe
Partially
insulated rod
probe with
ground tube
Partially
insulated
rod probe with
inactive length
Partially
insulated
rod probe with
inactive length
and ground tube
Partially
insulated
rod probe with
active build-up
compensation
Partially
insulated
rod probe with
inactive length
and active
build-up
compensation
L00–FMI5xxxx–06–05–xx–xx–063 L00–FMI5xxxx–06–05–xx–xx–062
Total length (L) 100 to 4000 100 to 4000 100 to 6000 100 to 6000 100 to 4125 100 to 6000
Active rod length (L1) 100 to 4000 100 to 4000 100 to 4000 100 to 4000 100 to 4000 100 to 4000
Inactive rod length (L3) – – 100 to 2000 100 to 2000 – 100 to 2000
Length of partial insulation (L2) 75 to 3950 75 to 3950 75 to 3950 75 to 3950 75 to 3950 75 to 3950
Probe rod diameter 10 / 16 10 / 16 10 / 16 10 / 16 10 / 16 10 / 16
ø Inactive length/ground tube – / – 10 / 16 22 / 43 22 / 43 – / – 22 / 43
ø Active build-up compensation
length (mm) – / – – / – – / – – / – 19 / 26
125
19 / 26
125
Lateral loading capacity (Nm) at 20 °C < 15 / < 30 < 40 /< 300 < 30 /< 60 < 40 /< 300 < 30 /< 60 < 30 /< 60
For use in agitating tanks – – / X – – / X – –
For aggressive liquids – – – – – –
For use in plastic tanks – X – X – –
For use in mounting nozzles – – X X – X
In the event of condensate on tank
ceiling
––XX–X
For high-viscosity liquids X – X – X X
For high-viscosity conductive liquids – – – – X X
X = Recommended
H2* = Thread height (important for calculating the exact probe length for process connection with thread G½, G¾, G1,
G1½.) For specifications for measurement H2, refer to Page 19 ff. under Process connections →Thread →G →H2.
L1/L2/L3
L1/L2/L3
L1/L2/L3
L1/L2/L3
NPT
NPT
G
G
L3
L3
L1
L1
L2
L2
L1
L1
L1
L1
L2
L2
L2
L2
125
125
L1
L1
L2
L2
L3
L3
L1
L1
L1
L1
L2
L2
L2
L2
125
125
L3
L3
H2*
H2*
Length tolerance Up to 1 m: 0 to 5 mm Up to 3 m: 0 to 10 mm Up to 6 m: 0 to 20 mm

Liquicap M FMI51, FMI52 Installation
Endress+Hauser 23
3.6 Rope probes FTI52
!Note!
• The active probe length is always fully insulated (dimension L1).
• Total length of probe from sealing surface: L = L1 + L3
• All rope probes are prepared for tensioning in containers (tensioning weight with anchor hole)
• Not suitable for agitator tanks, high-viscosity liquids and plastic tanks
• Thickness of rope insulation 0.75 mm
Rope probe
Fully insulated
Rope probe
with inactive length
Rope probe
with fully insulated inactive length
L00–FMI5xxxx–06–05–xx–xx–061 L00–FMI5xxxx–06–05–xx–xx–036
Total length (L) 420 to 10000 420 to 12000 420 to 11000
Active rope length (L1) 420 to 10000 420 to 10000 420 to 10000
Inactive length (L3) – 150 to 2000 150 to 1000
Probe rope diameter 4 4 4
ø Anchor weight 22 22 22
ø Anchorhole 555
Tensile loading capacity (N) of probe
rope at 20 °C
200 200 200
For aggressive liquids X – X
For use in mounting nozzles – X X
In the event of condensate on tank
ceiling
–XX
For high-viscosity liquids – – –
X = recommended
L1/L3 L1/L3
NPT
G
120
120
L1
L1
120
120
L1
L1
120
120
L1
L1
L3
L3
L3
L3
Length tolerance Up to 1 m: 0 to 10 mm Up to 3 m: 0 to 20 mm Up to 6 m: 0 to 30 mm Up to 12 m: 0 to 40 mm

Installation Liquicap M FMI51, FMI52
24 Endress+Hauser
3.7 Configuration instructions
3.7.1 Installation instructions
Liquicap M FTI51 (rod probe) can be installed from above, from below and from the side.
Liquicap M FTI52 (rope probe) can be installed vertically from above.
!Note!
• The probe may not come into contact with the container wall! Do not install probes in the area
of the filling curtain!
• When using in agitating tanks, make sure you install at a safe distance from the agitator. If there
are strong lateral loads, use rod probes with ground tube.
For electrically conductive tanks, e.g. steel tanks
L00–FTI5xxxx–11–06–xx–xx–001
For non-conductive tanks, e.g. plastic tanks
L00–FTI5xxxx–11–06–xx–xx–002
Probes with ground tube and grounding
MAX
MAX
MAX
MAX
MIN
MIN
MIN
MIN
MAX
MAX
MAX
MAX
MIN
MIN

Liquicap M FMI51, FMI52 Installation
Endress+Hauser 25
3.7.2 Measuring conditions
Notes!
• When installing in a nozzle, use inactive
length (L3).
• Probes with active build-up compensation
must be used for high-viscosity liquids that
tend to form build-up.
• Fully insulated rod and rope probes can be
used for pump control (∆S operation).
The switch-on and switch-off point are
determined by the empty and full
calibration.
– The maximum length depends on the
probe used.
A 16 mm rod, for example, generates a
capacitance of 380 pF/m in a conductive
liquid. With a maximum span of 1600 pF,
this gives 1600pF/380pF per m = 4 m
total length.
• The minimum change in capacitance for
level limit detection must be ≥5 pF.
L00–FTI5xxxx–15–05–xx–xx–002
L3
L3
L1
L1
MIN
MIN
s
s
off
off
on
on

Installation Liquicap M FMI51, FMI52
26 Endress+Hauser
3.8 Installation
"Caution!
Do not damage the probe insulation during installation.
"Caution!
Do not turn the housing while screwing in the probe, as otherwise the housing fixture can be
damaged.
L00–FMI5xxxx–17–00–00–xx–003
Probe with thread
• G ½, G ¾, G 1 or G 1½ (cylindrical):
– Use with the elastomer seal (temperature-resistant up to 300 °C) or another chemically
resistant seal.
!Note!
The following applies to probes with parallel threads and included seals:
• ½ NPT, ¾ NPT, 1 NPT and 1½ NPT (conical):
– Wrap thread in suitable seal material (e.g. Teflon) (note conductivity).
Probe with Tri–Clamp, sanitary connection or flange
• The process seal must conform to the specifications of the application (temperature and media-
resistant).
If the flange is PTFE-clad, this is generally a sufficient seal up to the permitted operating pressure.
3.8.1 Installation tools
The following tools are required for installation:
• Tool for flange mounting or
• a size 41 or size 55 Allen key for the threaded connection and
• a Phillips-head screwdriver for aligning the cable entry.
4
4
1
1
Thread For pressures up to 25 bar For pressures up to 100 bar Maximum tightening torque
G ½ 25 Nm – 80 Nm
G ¾ 30 Nm – 100 Nm
G 1 50 Nm – 180 Nm
G 1½ – 300 Nm 500 Nm

Liquicap M FMI51, FMI52 Installation
Endress+Hauser 27
3.8.2 Aligning the housing
To align the cable entry, the housing can be rotated by 270°.
For additional protection against ingress of moisture, particularly for outdoor installation, we
recommend routing the connecting cable downwards in front of the cable gland and securing it with
a cable tie.
Housing (Type F16, F15, F17, F13, T13)
• Screw open the cover.
• Unscrew the Phillips-head screw at the bottom of the housing by 3 to 4 complete turns.
• Rotate the housing into the desired position (max. 270°, from one limit stop to the other)
• Tighten the Phillips-head screw at the bottom of the housing.
!Note!
For the Type T13 housing with separate connection compartment, the Phillips-head screw for
aligning the housing is also in the electronics compartment.
L00–FMI5xxxx–04–00–00–xx–002
1. Unscrew the locking screw in the housing until you can turn the housing slightly.
2. Align the housing as necessary.
3. Tighten the locking screw (< 1 Nm) until you can no longer turn the housing.
4. Provide additional protection against moisture in the electronics compartment.
3.8.3 Sealing the probe housing
It is important that when installing the probe, connecting the electronic insert and during
subsequent operation, no moisture enters the probe housing. Therefore, always close the housing
cover and the cable entries tightly.
The O-ring seal on the housing cover is shipped with a coat of lubricant applied.
This allows the cover to seal tightly and ensures that the aluminum thread does not become jammed
during closing.
Never use mineral oil-based grease! This would destroy the O-ring.
12
1.
... 270°
2.
12
3.
12
4.