Endress+Hauser Levelflex FMP50 Manual

Application
• FMP50 - economically attractive basic device for
supply and storage applications, as well as utility
processes.
• Measuring range up to 12 m (39 ft)
• Process connection 3/4" thread or with adapter flange
• Temperature range: –20 to +80 °C (–4 to +176 °F)
• Pressure range: –1 to 6 bar (–14.5 to 87 psi)
• The following interfaces are available for system
integration:
– HART with 4...20 mA analog
– PROFIBUS PA (Profile 3.02)
• Used for level monitoring (MIN, MAX, range) up to
SIL 3 (homogeneous redundancy), independently
assessed by TÜV as per IEC 61508
Your benefits
• Reliable measuring for changing medias
• High availablility
• Integrated data memory
• Factory precalibrated
• Intuitive, menu-guided operating concept in national
languages
• Simple integration into control or asset management
systems
• Exact instrument and process diagnosis to assist fast
decisions
• Approvals: ATEX, IEC Ex, CSA, FM
Technical Information
Levelflex FMP50
Guided Level-Radar
Level measurement in liquids
TI01000F/00/EN/13.11
71140472

Table of contents Levelflex FMP50
2 Endress+Hauser
Table of contents
Important document information ................ 3
Document conventions ........................... 3
Function and system design .................... 4
Measuring principle ............................. 4
Measuring system .............................. 6
Input ..................................... 7
Measured variable .............................. 7
Measuring range ............................... 7
Blocking distance .............................. 7
Measuring frequency spectrum ...................... 8
Output .................................... 8
Output signal ................................. 8
Signal on alarm ................................ 8
Linearization ................................. 8
Galvanic isolation .............................. 8
Protocol-specific data ............................ 8
Auxiliary energy ........................... 10
Electrical connection ........................... 10
Supply voltage ............................... 14
Terminals .................................. 15
Cable entries ................................ 15
Cable specification ............................. 15
Device plug connectors .......................... 15
Power consumption ............................ 15
Current consumption ........................... 16
Power supply failure ............................ 16
Maximum load ............................... 16
Potential equalization ........................... 17
Overvoltage protection .......................... 17
Performance characteristics ................... 17
Reference operating conditions ..................... 17
Maximum measured error ........................ 18
Resolution .................................. 19
Reaction time ................................ 19
Influence of ambient temperature ................... 19
Operating conditions: Installation .............. 20
Suitable mounting position ........................ 20
Applications with restricted mounting space ............. 20
Notes on the mechanical load of the probe .............. 21
Notes on the process connection .................... 22
Securing the probe ............................. 23
Special mounting conditions ....................... 24
Operating conditions: Environment ............. 28
Ambient temperature range ....................... 28
Ambient temperature limits ....................... 28
Storage temperature ............................ 29
Climate class ................................ 30
Geometric height ............................. 30
Degree of protection ............................ 30
Vibration resistance ............................ 30
Cleaning the probe ............................ 30
Electromagnetic compatibility (EMC) ................. 30
Operating conditions: Process ................. 30
Process temperature range ........................ 30
Process pressure limits .......................... 30
Materials in contact with process .................... 31
Dielectric constant (DC) ......................... 31
Extension of the rope probes through temperature ......... 31
Mechanical construction ..................... 32
Design, dimensions ............................ 32
Tolerance of probe length ........................ 35
Weight .................................... 35
Materials ................................... 35
Operability ............................... 37
Operating concept ............................. 37
Local operation ............................... 37
Remote operation ............................. 38
Integration in tank gauging system ................... 40
System integration via Fieldgate ..................... 41
Certificates and approvals .................... 42
CE mark ................................... 42
C-Tick symbol ............................... 42
Ex approval ................................. 42
Functional Safety .............................. 42
AD2000 ................................... 42
Telecommunications ........................... 42
Other standards and guidelines ..................... 42
Ordering information ........................ 43
Compact device Levelflex ........................ 43
Product structure FMP50 ........................ 43
Accessories ............................... 48
Device-specific accessories ........................ 48
Communication-specific accessories .................. 50
Service-specific accessories ........................ 51
System components ............................ 51
Documentation ............................ 52
Standard documentation ......................... 52
Supplementary documentation ..................... 52
Certificates ................................. 52
Registered trademarks ....................... 53
Patents .................................. 54

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Important document information
Document conventions Electrical symbols
Symbol Meaning
A0011197
Direct current
A terminal to which DC voltage is applied or through which direct current flows.
A0011198
Alternating current
A terminal to which alternating voltage (sine-wave) is applied or through which alternating current flows.
)
A0011200
Ground connection
A grounded terminal which, as far as the operator is concerned, is grounded via a grounding system.
*
A0011199
Protective ground connection
A terminal which must be connected to ground prior to establishing any other connections.
A0011201
Equipotential connection
A connection that has to be connected to the plant grounding system: This may be a potential equalization
line or a star grounding system depending on national or company codes of practice.
Symbols for certain types of information
Symbol Meaning
A0011182
Allowed
Indicates procedures, processes or actions that are allowed.
A0011183
Preferred
Indicates procedures, processes or actions that are preferred.
A0011184
Forbidden
Indicates procedures, processes or actions that are forbidden.
A0011193
Tip
Indicates additional information.
A0011194
Reference to documentation
Refers to the corresponding device documentation.
A0011195
Reference to page
Refers to the corresponding page number.
A0011196
Reference to graphic
Refers to the corresponding graphic number and page number.
Symbols in graphics
Symbol Meaning
1, 2, 3 ... Item numbers
,… ,
Series of steps
A, B, C, ... Views
A-A, B-B, C-C, ... Sections
-
A0011187
Hazardous area
Indicates a hazardous area.
.
A0011188
Safe area (non-hazardous area)
Indicates a non-hazardous location.

Levelflex FMP50
4 Endress+Hauser
Function and system design
Measuring principle Füllstandmessung
The Levelflex is a "downward-looking" measuring system that functions according to the ToF method (ToF =
Time of Flight). The distance from the reference point to the product surface is measured. High-frequency pulses
are injected to a probe and led along the probe. The pulses are reflected by the product surface, received by
the electronic evaluation unit and converted into level information. This method is also known as TDR (Time
Domain Reflectometry).
F
L
DE
100%
0%
LN
R
A0011360
LN = probe length R = reference point of measurement
D = distace E = empty calibration (= zero)
L = level F = full calibration (= span)
Dielectric constant
The dielectric constant (DC) of the medium has a direct impact on the degree of reflection of the highfrequency
pulses. In the case of large DC values, such as for water or ammonia, there is strong pulse reflection while,
with low DC values, such as for hydrocarbons, weak pulse reflection is experienced.
Eingang
The reflected pulses are transmitted from the probe to the electronics. There, a microprocessor analyzes the
signals and identifies the level echo which was generated by the reflection of the high-frequency pulses at the
product surface. This clear signal detection system benefits from over 30 years' experience with pulse time-of-
flight procedures that have been integrated into the development of the PulseMaster® software.
The distance D to the product surface is proportional to the time of flight t of the impulse:
D = c · t/2,
where c is the speed of light.
Based on the known empty distance E, the level L is calculated:
L = E – D
The reference point R of the measurement is located at the process connection. For details see the dimensional
drawing:
FMP50: (® ä 34)
The Levelflex possesses functions for interference echo suppression that can be activated by the user. They
guarantee that interference echoes from e.g. internals and struts are not interpreted as level echoes.

Levelflex FMP50
Endress+Hauser 5
Output
The Levelflex is preset at the factory to the probe length ordered so that in most cases only the application
parameters that automatically adapt the device to the measuring conditions need to be entered. For models
with a current output, the factory adjustment for zero point E and span F is 4 mA and 20 mA, for digital outputs
and the display module 0 % and 100 %. A linearization function with max. 32 points, which is based on a table
entered manually or semi-automatically, can be activated on site or via remote operation. This function allows
the level to be converted into units of volume or mass, for example.
Life cycle of the product
Engineering Procurement Installation Commissioning Operation Maintenance Retirement
A0013773-EN
å 1 Life cycle process
Engineering
• Universal measuring principle
• Measurement unaffected by medium properties
• Hardware and software developed according to SIL IEC 61508
• Genuine, direct interface measurement
Procurement
• Endress+Hauser being the world market leader in level measurement guarantees asset protection
• Worldwide support and service
Installation
• Special tools are not required
• Reverse polarity protection
• Modern, detachable terminals
• Main electronics protected by a separate connection compartment
Commissioning
• Fast, menu-guided commissioning in only 6 steps
• Plain text display in national languages reduces the risk of error or confusion
• Direct local access of all parameters
• Short instruction manual at the device
Operation
• Multi-echo tracking: Reliable measurement through self-learning echo-search algorithms taking into account
the short-term and long-term history in order to check the found echoes for plausibility and to suppress
interference echoes.
• Diagnostics in accordance with NAMUR NE107
Maintenance
• HistoROM: Data backup for instrument settings and measured values
• Exact instrument and process diagnosis to assist fast decisions with clear details concerning remedies
• Intuitive, menu-guided operating concept in national languages saves costs for training, maintenance and
operation
• Cover of the electronics compartment can be opened in hazardous areas
Retirement
• Order code translation for subsequent models
• RoHS-conforming (Restriction of certain Hazardous Substances), unleaded soldering of electronic
components
• Environmentally sound recycling concept

Levelflex FMP50
6 Endress+Hauser
Measuring system General notes on probe selection
Normally use rod probes for liquids. Rope probes are used in liquids for measuring ranges > 4 m (13 ft) and
with restricted ceiling clearance which does not allow the installation of rigid probes.
Probe selection
The various types of probe in combination with the process connections are suitable for the following
applications:
Levelflex FMP50
Type of probe Rod probe Rope probe
A0011387
A0011388
Feature 060 - Probe: Option: Option:
AA 8 mm (316L) LA 4 mm (316)
AB 1/3" (316L) LB 1/6" (316)
Max. probe length 4 m (13 ft) 12 m (40 ft)
For application level measurement in liquids
If required, rod and rope probes can be replaced. They are secured with a thread coating.
For further information on service and spare parts please contact the Endress+Hauser service.

Levelflex FMP50
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Input
Measured variable The measured variable is the distance between the reference point and the product surface.
Subject to the empty distance entered "E" the level is calculated.
Alternatively, the level can be converted into other variables (volume, mass) by means of linearization (32
points).
Measuring range The following table describes the media groups and the possible measuring range as a function of the media
group.
Levelflex FMP50
Media group DC (er)Typical liquids
Measuring range
bare metallic
rod probes
bare metallic
rope probes
1 1.4...1.6 condensed gases, e.g. N2, CO2on request
2 1.6...1.9 • liquefied gas, e.g. propane
• solvent
• Freon
• palm oil
4 m (13 ft) 12 m (39 ft)
3 1.9...2.5 mineral oils, fuels 4 m (13 ft) 12 m (39 ft)
4 2.5...4 • benzene, styrene, toluene
• furan
• naphthalene
4 m (13 ft) 12 m (39 ft)
5 4...7 • chlorobenzene, chloroform
• cellulose spray
• isocyanate, aniline
4 m (13 ft) 12 m (39 ft)
6 > 7 • aqueous solutions
• alcohols
• acids, alkalis
4 m (13 ft) 12 m (39 ft)
Reduction of the max. possible measuring range through buildup, above all of moist products.
Blocking distance The upper blocking distance (= UB) is the minimum distance from the reference point of the measurement
(mounting flange) to the maximum level.
F
UB
E
100%
0%
LN
R
SD
A0011279
R = reference point of measurement E = empty calibration (= zero)
LN = probe length F = full calibration (= span)
UB = upper blocking distance SD = safety distance

Levelflex FMP50
8 Endress+Hauser
Blocking distance (factory setting):
• with rod and rope probes up to 8 m (26 ft): 200 mm (8 in)
• with rod and rope probes exceeding a length of 8 m (26 ft): 0.025 * (length of probe)
The specified blocking distances are preset on delivery. Depending on the application these settings can
be changed.
For rod and rope probes and for media with DC > 7 (or generally for stilling well/bypass applications) the
blocking distance may be reduced to 100 mm (4").
Within the blocking distance, a reliable measurement can not be guaranteed.
A safety distance SD can be defined in addition to the blocking distance. A warning is generated if the
level rises into this safety distance.
Measuring frequency
spectrum
100 MHz to 1.5 GHz
Output
Output signal HART
Signal coding FSK ±0.5 mA over currency signal
Data transmission rate 1200 Baud
Galvanic isolation Yes
PROFIBUS PA
Signal coding Manchester Bus Powered (MBP)
Data transmission rate 31,25 KBit/s, voltage mode
Galvanic isolation Yes
Signal on alarm Depending on the interface, failure information is displayed as follows:
• Current output (for HART devices)
– Failsafe mode selectable (in accordance with NAMUR Recommendation NE 43):
Minimum alarm (for 2-wire units): 3.6 mA
Minimum alarm (for 4-wire units): 2.4 mA
Maximum alarm (= factory setting): 22 mA
– Failsafe mode with user-selectable value: 3.59 to 22.5 mA
• Local display
– Status signal (in accordance with NAMUR Recommendation NE 107)
– Plain text display
• Operating tool via digital communication (HART, PROFIBUS PA) or service interface (CDI)
– Status signal (in accordance with NAMUR Recommendation NE 107)
– Plain text display
Linearization The linearization function of the device allows the conversion of the measured value into any unit of length or
volume. Linearization tables for calculating the volume in cylindrical tanks are pre-programmed. Other tables
of up to 32 value pairs can be entered manually or semi-automatically.
Galvanic isolation All circuits for the outputs are galvanically isolated from each other.
Protocol-specific data HART
Manufacturer ID 17 (0x11)
Device type ID 0x34
HART specification 6.0

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Device description files (DTM,
DD)
Information and files under:
•www.endress.com
•www.hartcomm.org
HART load Min. 250 W
HART device variables The measured values can be freely assigned to the device variables.
Measured values for PV (primary variable)
• Level linearized
• Distance
• Electronic temperature
• Relative echo amplitude
Measured values for SV, TV, FV (second, third and fourth variable)
• Level linearized
• Distance
• Terminal voltage
• Electronic temperature
• Absolute echo amplitude
• Relative echo amplitude
• Calculated DC
Supported functions • Burst mode
• Additional transmitter status
PROFIBUS PA
Manufacturer ID 17 (0x11)
Ident number 0x1558
Profile version 3.02
GSD file Information and files under:
•www.endress.com
•www.profibus.org
GSD file version
Output values Analog Input:
• Level linearized
• Distance
• Terminal voltage
• Electronic temperature
• Absolute echo amplitude
• Relative echo amplitude
• Calculated DC
Digital Input:
• Extended diagnostic blocks 1)
• Status output PFS Block

Levelflex FMP50
10 Endress+Hauser
Input values Analog Output:
• Analog value from PLC (for sensor block external pressure and temperature)
• Analog value from PLC to be indicated on the display
Digital Output:
• Extended diagnostic block 1)
• Level limiter
• Sensor block measurement on
• Sensor block save history on
• Status output
Supported functions • Identification & Maintenance
Simple device identification via control system and nameplate
• Automatic Ident Number Adoption
GSD compatibility mode with respect to the previous device Levelflex M FMP4x
• Physical Layer Diagnostics
Installation check of the PROFIBUS segment and the Levfelflex FMP4x via terminal
voltage and telegram monitoring
• PROFIBUS Up-/Download
Up to 10 times faster reading and writing of parameters via PROFIBUS Up-/
Download
• Condensed Status
Simple and self-explanatory diagnostic information due to categorization of
diagnostic messages
1) in preparation
Auxiliary energy
Electrical connection 2-wire, 4-20mA HART (FMP5x - **A...)
Without intgrated overvoltage protection
+
1
–
2
+
–
236
4...20 mA
6
+
–
4
7
8
15
A0011294
1Terminal 4...20mA HART passive
2Active barrier with power supply (e.g. RN221N): Observe terminal voltage (® ä 14)
3HART communication resistor (³250 W): Observe maximum load (® ä 16)
4 Connection for Field Communicator 375/475 or Commubox FXA195
5Analog display device: Observe maximum load (® ä 16)
6Observe cable specification (® ä 15)
7 Potential equalization
8 Cable entry

Levelflex FMP50
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2-wire, 4-20 mA HART, 4...20mA
Without integrated overvoltage protection
–
4
+
1
–
2
+
3
+
–
2
3
10
6
4
8
5
4...20 mA
+
–
+
–
4...20 mA
+
–
1
77 9
11
12
A0013923
1Cable entry for current output 1
2 Terminal for current output 1
3Supply voltage for current output 1 (e.g. RN221N); Observe terminal voltage (® ä 14)
4HART communication resistor (³ 250 W): Observe maximum load (® ä 16)
5 Connection for Field Communicator 375/475 or Commubox FXA195
6Analog display device ; observe maximum load (® ä 16)
7Observe cable specification (® ä 15)
8 Cable entry for current output 2
9 Terminal for current output 2
10 Supply voltage for current output 2 (e.g. RN221N); Obesrve terminal voltage (® ä 14)
11 Analog display device ; observe maximum load
12 Terminal for the potential equalization line
This version is also suited for single-channel operation. In this case, current output 1 (terminals 1 and 2)
must be used.

Levelflex FMP50
12 Endress+Hauser
4-wire, 4-20 mA HART (FMP5x - **K/L...)
Without integrated overvoltage protection
+
–
11 9
4...20 mA
³ W250
12
7
8
10
2AC / DC
13
4
6
3
1
12
5
L+
1
L-
2
–
4
+
3
(L) (N)
A0011340
1Terminal 4...20mA HART active
2Supply voltage: Observe terminal voltage (® ä 14), observe cable specification (® ä 15)
3 Terminal supply voltage
4 Potential equalization
5 Cable entry for power supply
6 Cable entry for signal line
7Protective earth, observe cable specification (® ä 15)
8 Protective connection; do not disconnect!
9Analog display device: Observe maximum load (® ä 16)
10 Connection Field Communicator 375/475 or Commubox FXA195
11 HART communication resistor (³250 W): Observe maximum load (® ä 16)
12 Signal cable including screening (if required), observe cable specification (® ä 15)
13 Evaluation unit, e.g. PLC
!CAUTION
To ensure electrical safety:
►Do not disconnect the protective connection (8).
►Disconnect the supply voltage before disconnecting the protective earth (7).
Connect protective earth (7) to the internal ground terminal (7) before connecting the supply voltage. If
necessary, connect the potential matching line to the external ground terminal (4).
In order to ensure electromagnetic compatibility (EMC): Do not only ground the device via the protective
earth conductor of the supply cable. Instead, the functional grounding must also be connected to the
process connection (flange or threaded connection) or to the external ground terminal.
An easily accessible power switch must be installed in the proximity of the device. The power switch
must be marked as a disconnector for the device (IEC/EN61010).

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Endress+Hauser 13
PROFIBUS PA
+
1
–
2
4
3
1
2
–
4
+
3
A0011341
1 Terminals PROFIBUS PA
2Cable screen: Observe cable specifications (® ä 15)
3 Cable entry
4 Potential equalization
–
4
+
3
3
1
2
+
1
–
2
3+
4-
A0013759
1Terminals switching output (Open collector)
2 Cable entry
Switching output
Function Open collector switching output
Switching behavior Binary (conductive or non-conductive), switches when the programmable switch point is
reached
Failure mode non-conductive
Eectrical connection values U = 10.4 to 35 VDC, I = 0 to 40 mA
Internal resistance RI < 880 W
The voltage drop at this internal resistance has to be taken into account on planning the
configuration. For example, the resulting voltage at a connected relay must be sufficient to
switch the relay.
Insulation voltage floating, Insulation voltage 1 350 VDC to power supply aund 500 VAC to ground
Switch point freely programmable, separately for switch-on and switch-off point
Switching delay freely programmable from 0 to 100 sec. , separately for switch-on and switch-off point
Number of switching cycles corresponds to the measuring cycle
Signal source
device variables
• Level linearized
• Distance
• Terminal voltage
• Electronic temperature
• Relative echo amplitude
Number of switching cycles unlimited

Levelflex FMP50
14 Endress+Hauser
Connection examples for the switch output
3+
+
-
4-
A0015909
å 2 Connection of a relay
Suitable relays (examples):
• Solid-state relay: Phoenix Contact OV-24DC/480AC/5 with mounting
rail connector UMK-1 OM-R/AMS
• Electromechanical relay: Phoenix Contact PLC-RSC-12DC/21
3+ 2
1
+
4-
A0015910
å 3 Connection of a digital input
1 Pull-up resistor
2 Digital input
Supply voltage An external power supply is required.
Various supply units can be ordered from Endress+Hauser: see "Accessories" section (® ä 51)
2-wire, 4-20mA HART, passive
"Power Supply, Output" 1) Outputs Terminal voltage "Approval" 2)
A: 2-wire; 4-20mA HART 1 11.5 to 35 V 3) Non-Ex, Ex nA, CSA GP
11.5 to 32 V 3) Ex ic
11.5 to 30 V 3) Ex ia / IS
13.5 to 30 V 4) Ex d / XP, Ex ic(ia), Ex tD / DIP
C: 2-wire; 4-20mA HART, 4-20mA 1 13.5 to 30 V 4) all
2 12 to 30 V all
1) Feature 020 of the product structure
2) Feature 010 of the product structure
3) For ambient temperatures Ta £ -30 °C (-22 °F) a minimum voltage of 14 V is required for the satrtup of the device
at the MIN error current (3.6 mA). The startup current can be parametrized. If the device is operated with a fixed
current I ³ 4.5 mA (HART multidrop mode), a voltage of 10,4 V is sufficient throughout the entire range of ambient
temperatures.
4) For ambient temperatures Ta £ -30 °C (-22 °F) a minimum voltage of 16 V is required for the startup of the device
at the MIN error current (3.6 mA).
Load (® ä 16)
Residual ripple:
• < 1 VSS (0 to 100 Hz)
• < 10 mVSS (100 to 10 000 Hz)
4-wire, 4-20mA HART, active
"Power supply; Output" 1) Terminal voltage
K: 4-wire 90-253VAC; 4-20mA HART 90 to 253 VAC (50 to 60 Hz), overvoltage category II
L: 4-wire 10,4-48VDC; 4-20mA HART 10.4 to 48 VDC
1) Feature 020 of the product structure

Levelflex FMP50
Endress+Hauser 15
PROFIBUS PA
"Power supply; Output" 1) Terminal voltage
G: 2-wire; PROFIBUS PA, switch output 9 to 32 VDC
1) Feature 020 of the product structure
Terminals Plug-in spring terminals for wire cross-sections 0.5 to 2.5 mm2 (20 to 14 AWG)
Cable entries • Cable gland (not for Ex d):
–Plastics M20x1.5 with cable Æ 5 to 10 mm (0.2 to 0.39 in): non-Ex, ATEX/IECEx/NEPSI Ex ia/ic
–Metal M20x1.5 with cable Æ 7 to 10 mm (0.28 to 0.39 in): dust-Ex, FM IS, CSA IS, CSA GP, Ex nA
• Thread for cable entry:
– ½" NPT
– G ½"
– M20 × 1.5
• Connector (only for non-Ex, Ex ic, Ex ia): M12 or 7/8"
Cable specification HART
•For ambient temperature TU³60 °C (140 °F): use cable for temperature TU +20 K.
• A normal device cable suffices if only the analog signal is used.
• A shielded cable is recommended if using the HART protocol. Observe grounding concept of the plant.
PROFIBUS
Use a twisted, screened two-wire cable, preferably cable type A.
For further information on the cable specifications, see Operating Instructions BA00034S "Guidelines for
planning and commissioning PROFIBUS DP/PA", PNO Guideline 2.092 "PROFIBUS PA User and
Installation Guideline" and IEC61158-2 (MBP).
Device plug connectors For the versions with fieldbus plug connector (M12 or 7/8"), the signal line can be connected without
opening the housing.
Pin assignment of the M12 plug connector
21
3
4
+
–
nc
A0011175
Pin Meaning
1 Signal +
2 not connected
3 Signal -
4 Ground
Pin assignment of the 7/8" plug connector
2
13
4
+
–nc
A0011176
Pin Meaning
1 Signal -
2 Signal +
3 not connected
4 Ground
Power consumption "Power supply; Output" 1) Power consumption
A: 2-wire; 4-20mA HART 0.9 W
C: 2-wire; 4-20mA HART, 4-20mA 2 x 0.7 W

Levelflex FMP50
16 Endress+Hauser
"Power supply; Output" 1) Power consumption
K: 4-wire 90-253VAC; 4-20mA HART 6 VA
L: 4-wire 10,4-48VDC; 4-20mA HART 1.3 W
1) Feature 020 of the product structure
Current consumption HART
Nominal current 3.6 to 22 mA, the start-up current for multidrop mode can be parametrized (is set to
3.6 mA on delivery)
Breakdown signal (NAMUR
NE43)
adjustable: 3.59 to 22.5 mA
PROFIBUS PA
Nominal current 14 mA
Error current FDE (Fault
Disconnection Electronic)
0 mA
Power supply failure • Configuration is retained in the HistoROM (EEPROM).
• Error messages (incl. value of operated hours counter) are stored.
Maximum load In order to ensure a suffiecient terminal voltage at the device, the load resistance R (including wire resistance)
must not exceed a value depending on the voltage U0 supplied by the supply unit.
R[ ]W
[V]U0
10
11.5 22.5
20 30 35
0
500
A0014076
Feature 20 "Power Supply, Output", Option A "2-wire; 4-20mA HART"
Outputs Terminal voltage Feature 010 - Approval
1 11.5 to 35 V Non-Ex, Ex nA, CSA GP
11.5 to 32 V Ex ic
11.5 to 30 V Ex ia / IS
R[ ]W
[V]U0
10
13.5 24.5
20 30
0
500
A0014077
Feature 20 "Power Supply, Output", Option A "2-wire; 4-20mA HART"

Levelflex FMP50
Endress+Hauser 17
Outputs Terminal voltage Feature 010 - Approval
1 13.5 to 30 V Ex d / XP, Ex ic(ia), Ex tD / DIP
Feature 20 "Power Supply, Output", Option C "2-wire; 4-20mA HART, 4-20mA"
Outputs Terminal voltage Feature 010 "Approval"
1 13.5 to 30 V all
R[ ]W
[V]U0
10
12 23
20 30
0
500
A0014078
Feature 20 "Power Supply, Output", Option C "2-wire; 4-20mA HART, 4-20mA"
Outputs Terminal voltage Feature 010 "Approval"
2 12 to 30 V all
For 4-wire devices (feature 020, options "K" and "L") the admissible load is 0 to 500 W.
Potential equalization No special measures for potential equalization are required.
If the device is designed for hazardous areas, observe the information in the documentation "Safety
Instructions" (XA, ZD).
Overvoltage protection If the measuring device is used for level measurement in flammable liquids which requires the use of overvoltage
protection according to DIN EN 60079-14, standard for test procedures 60060-1 (10 kA, pulse 8/20 ms),
overvoltage protection has to be ensured by one of the following measures:
• Integrated overvoltage protection (in preparation);
Product structure: Feature 610 "Accessory mounted", option NA "Overvoltage protection".
• External overvoltage protection, e.g. Endress+Hauser's HAW562 or HAW569.
For detailed information please refer to the following documents:
• HAW562: TI01012K
• HAW569: TI01013K
Performance characteristics
Reference operating
conditions
• Temperature = +24 °C (+75 °F) ±5 °C (±9 °F)
• Pressure = 960 mbar abs. (14 psia) ±100 mbar (±1.45 psi)
• Humidity = 60 % ±15 %
• Reflection factor ≥ 0,8 (metal plate for rod and rope probe with min. 1 mm (0.04 in) diameter)
•Flange for rod or rope probe ³ 300 mm (12 in) diameter
•Distance to obstacles ³ 1 m (40 in)

Levelflex FMP50
18 Endress+Hauser
Maximum measured error Typical data under reference operating conditions: DIN EN 61298-2, percentage values in relation to the span.
Output: digital analog 1)
Sum of non-linearity,
nonrepeatability and hysteresis
±2 mm (0.08 in) ±0.02 %
Offset / Zero ±4 mm (0.16 in) ±0.03 %
1) Add error of the analogous value to the digital value.
If the reference conditions are not met, the offset/zero point arising from the mounting situation may be up to
±12 mm (0.47 in) for rope and rod probes. This additional offset/zero point can be compensated for by entering
a correction (parameter "level correction") during commissioning.
Differing from this, the following measuring error is present in the vicinity of the lower probe end:
rod probe and coax probe
-80
-60
-40
-20
0
20
40
60
80
0 50 100 150 200 250 300
distance from probe end [mm]
sum of non-linearity, non-repeatability
and hysteresis [mm]
DC = 2
DC > 7
rope probe
-80
-60
-40
-20
0
20
40
60
80
0 50 100 150 200 250 300
distance from probe end [mm]
sum of non-linearity, non-repeatability
and hysteresis [mm]
DC > 7
A0014154-EN
If for rope probes the DC value is less than 7, then measurement is not possible in the area of the straining
weight (0 to 250 mm from end of probe; lower blocking distance).

Levelflex FMP50
Endress+Hauser 19
Differing from this, the following measuring error is present in the vicinity of the upper probe end
(rod/rope only):
2 mm
0 mm
- 2 mm
100 mm 200 mm
10 mm
- 10 mm
20 mm
- 20 mm
30 mm
- 30 mm
40 mm
- 40 mm
R
D
DC = 2
DC > 7
A0015091
DSum of non-linearity, non-repeatability and hysteresis
R Reference point of measurement
DC Dielectric constant
Resolution • digital: 1 mm
•analog: 1 mA
Reaction time The reaction time can be parametrized. The following step response times (as per DIN EN 61298-2) 1) are valid
if the damping is switched off:
Level measurement
Probe length Sampling rate Step response time
< 12 m (39 ft) 3.6 measurements/second < 0.8 s
Influence of ambient
temperature
The measurements are carried out in accordance with EN 61298-3
• digital (HART, PROFIBUS PA): average TK = 0.6 mm/10 K
• analog (current output):
– zero point (4 mA): average TK = 0.02 %/10 K
– span (20 mA): average TK = 0.05 %/10 K
1) According to DIN EN 61209-2 the response time is the time which passes after a sudden change of the input signal until the output signal for the first time
assumes 90% of the steady-state value.

Levelflex FMP50
20 Endress+Hauser
Operating conditions: Installation
Suitable mounting position
A
C
12 3
4
B
A0012606
Mounting distances
• Distance (A) between wall and rod or rope probe:
– for smooth metallic walls: > 50 mm (2")
– for plastic walls: > 300 mm (12") mm to metallic parts outside the vessel
– for concrete walls: > 500 mm (20") , otherwise the available measuring range may be reduced.
• Distance (B) between rod or rope probe and internal fittings in the vessel: > 300 mm (12")
• Distance (C) from end of probe to bottom of the vessel:
– Rope probe: > 150 mm (6 in)
– Rod probe: > 10 mm (0.4 in)
Additional conditions
• When mounting in the open, a weather protection cover (1) may be installed to protect the device against
extreme weather conditions.
• In metallic vessels: Preferably do not mount the probe in the center of the vessel (2), as this would lead to
increased interference echoes.
If a central mounting position can not be avoided, it is crucial to perform an interference echo
suppresion(mapping) after the commissioning of the device.
• Do not mount the probe in the filling curtain (3).
• Avoid buckling the rope probe during installation or operation (e.g. through product movement against silo
wall) by selecting a suitable mounting location.
With suspended rope probes (probe end not fixed at the bottom) the distance between the probe rope
and internal fittings in the tank must not fall below 300 mm (12") during the entire process. A sporadic
contact between the probe weight and the cone of the vessel, however, does not influence the
measurement as long as the dielectric constant of the medium is at least DC = 1.8.
When mounting the electronics housing into a recess (e.g. in a concrete ceiling), observe a minimum
distance of 100 mm (4 inch) between the cover of the terminal compartment / electronics compartment
and the wall. Otherwise the connection compartment / electronics compartment is not accessible after
installation.
Applications with restricted
mounting space
Mounting with remote sensor
The device version with a remote sensor is suited for applications with restricted mounting space. In this case
the electronics housing is mounted at a separate position from which it is easier accessible.