Endress+Hauser Micropilot FMR63B PROFIBUS PA Manual

Level measurement in hygienic applications
Application
• Continuous, non-contact level measurement of liquids in hygienic applications
• Process connections: For hygiene applications (e.g.: Tri-Clamp or M24 adapter
concept)
• Maximum measuring range: 80 m (262 ft)
• Temperature: –40 to +200 °C (–40 to +392 °F)
• Pressure: –1 to +25 bar (–14.5 to +363 psi)
• Accuracy: ±1 mm (±0.04 in)
Your benefits
• PTFE or PEEK antenna for hygienic requirements
• Reliable measurement thanks to strong signal focusing, even with multiple
internal fixtures
• Easy, guided commissioning with intuitive user interface
•Bluetooth®wireless technology for commissioning, operation and maintenance
• Longer calibration cycles with Radar Accuracy Index
Products Solutions Services
Technical Information
Micropilot FMR63B
PROFIBUS PA
Free space radar
TI01695F/00/EN/01.23-00
71627285
2023-09-01

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Table of contents
Important document information ............... 3
Symbols .................................... 3
Graphic conventions ........................... 4
Function and system design ................... 4
Measuring principle ............................ 4
Input ..................................... 5
Measured variable ............................. 5
Measuring range .............................. 5
Operating frequency .......................... 12
Transmission power ........................... 12
Output .................................. 12
PROFIBUS PA ............................... 12
Signal on alarm .............................. 12
Linearization ............................... 13
Protocol-specific data ......................... 13
Power supply ............................. 14
Terminal assignment .......................... 14
Terminals ................................. 15
Available connectors .......................... 15
Supply voltage .............................. 16
Potential equalization ......................... 16
Cable entries ............................... 17
Cable specification ............................ 17
Overvoltage protection ......................... 17
Performance characteristics .................. 18
Reference operating conditions ................... 18
Maximum measured error ....................... 18
Measured value resolution ...................... 19
Response time .............................. 19
Influence of ambient temperature ................. 19
Influence of gas phase ......................... 19
Mounting ................................ 20
Mounting location ............................ 20
Orientation ................................ 21
Installation instructions ........................ 22
Beam angle ................................ 23
Special mounting instructions .................... 24
Environment .............................. 26
Ambient temperature range ..................... 26
Ambient temperature limits ..................... 26
Storage temperature .......................... 33
Climate class ............................... 33
Installation height as per IEC61010-1 Ed.3 ........... 33
Degree of protection .......................... 33
Vibration resistance ........................... 33
Electromagnetic compatibility (EMC) ............... 33
Process .................................. 34
Process pressure range ......................... 34
Dielectric constant ............................ 35
Mechanical construction .................... 35
Dimensions ................................ 35
Weight ................................... 45
Materials .................................. 46
Display and user interface ................... 50
Operation concept ............................ 50
Languages ................................. 50
Local operation .............................. 50
Local display ............................... 50
Remote operation ............................ 52
System integration ........................... 52
Supported operating tools ...................... 53
Certificates and approvals ................... 53
CE mark ................................... 53
RoHS ..................................... 53
RCM marking ............................... 53
Ex approvals ................................ 53
Pressure equipment with permitted pressure ≤
200 bar (2 900 psi) ........................... 53
Radio approval .............................. 53
EN 302372 radio standard ...................... 53
FCC ...................................... 54
Industry Canada ............................. 54
External standards and guidelines ................. 54
Ordering information ....................... 54
Calibration ................................. 55
Service ................................... 55
Test, certificate, declaration ...................... 56
Identification ............................... 56
Application packages ....................... 56
Heartbeat Technology ......................... 56
Accessories ............................... 57
Weather protection cover 316L ................... 57
Plastic weather protection cover ................... 58
Remote display FHX50B ........................ 58
Gas-tight feedthrough ......................... 59
Process adapter M24 .......................... 59
Field Xpert SMT70 ............................ 60
DeviceCare SFE100 ........................... 60
FieldCare SFE500 ............................ 60
RID14 .................................... 60
RID16 .................................... 60
Fieldgate SFG500 ............................ 61
Documentation ............................ 61
Document function ........................... 62
Registered trademarks ...................... 62

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Important document information
Symbols 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.
Electrical symbols
Direct current
Alternating current
Direct current and alternating 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 inside and outside of the device.
• Inner ground terminal; protective earth is connected to the mains supply.
• Outer ground terminal; device is connected to the plant grounding system.
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
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

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Graphic conventions • Installation, explosion and electrical connection drawings are presented in simplified format
• Devices, assemblies, components and dimensional drawings are presented in reduced-line
format
• Dimensional drawings are not to-scale representations; the dimensions indicated are
rounded off to 2 decimal places
• Unless otherwise described, flanges are presented with sealing surface form EN1091-1, B2;
ASME B16.5, RF; JIS B2220, RF
Function and system design
Measuring principle The Micropilot is a "downward-looking" measuring system, operating based on the frequency
modulated continuous wave method (FMCW). The antenna emits an electromagnetic wave at a
continuously varying frequency. This wave is reflected by the product and received again by the
antenna.
D
R
A0032017
 1 FMCW principle: transmission and reflection of the continuous wave
R Reference point of measurement
D Distance between reference point and product surface
The frequency of this wave is modulated in the form of a sawtooth signal between two limit
frequencies f1 and f2:
f
t
1
2
f2
f1
∆t
∆f
A0023771
 2 FMCW principle: result of frequency modulation
1 Transmitted signal
2 Received signal
This results in the following difference frequency at any time between the transmitted signal and the
received signal:
∆f = k ∆t
where ∆t is the run time and k is the specified increase in frequency modulation.
∆t is given by the distance D between the reference point R and the product surface:

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D = (c ∆t) / 2
where c is the speed of propagation of the wave.
In summary, D can be calculated from the measured difference frequency Δf. D is then used to
determine the content of the tank or silo.
Input
Measured variable The measured variable is the distance between the reference point and the product surface. The level
is calculated based on "E", the empty distance entered.
Measuring range The measuring range starts at the point where the beam hits the tank floor. Levels below this point
cannot be measured, particularly in the case of spherical bases or conical outlets.
Maximum measuring range
The maximum measuring range depends on the antenna size and design.
Antenna Maximum measuring range
Integrated, PEEK, 20 mm (0.75 in) 10 m (32.8 ft)
Cladded flush mount, PTFE, 50 mm (2 in) 50 m (164 ft)
Cladded flush mount, PTFE, 80 mm (3 in) 80 m (262 ft)
Usable measuring range
The usable measuring range depends on the antenna size, the medium's reflective properties, the
installation position and any possible interference reflections.
In principle, measurement is possible up to the tip of the antenna.
To avoid any material damage from corrosive or aggressive media or deposit buildup on the antenna,
the end of the measuring range should be selected 10 mm (0.4 in) before the tip of the antenna.

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100%
0%
BA
H
R
C
A0051658
 3 Usable measuring range
A Length of antenna + 10 mm (0.4 in)
B Usable measuring range
C 50 to 80 mm (1.97 to 3.15 in); medium εr < 2
H Vessel height
R Reference point of measurement, varies depending on the antenna system
For further information on the reference point, see →
A
Mechanical construction.
In the case of media with a low dielectric constant, εr < 2 , the tank floor may be visible through the
medium at very low levels (lower than level C). Reduced accuracy must be expected in this range. If
this is not acceptable, the zero point should be positioned at a distance C above the tank floor in
these applications → Usable measuring range.
The media groups and the possible measuring range are described as a function of the application
and media group in the following section. If the dielectric constant of the medium is not known, to
ensure a reliable measurement assume the medium belongs to group B.

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Media groups
•A0 (εr 1.2 to 1.4)
e.g. n-butane, liquid nitrogen, liquid hydrogen
•A (εr 1.4 to 1.9)
Non-conductive liquids, e.g. liquefied gas
•B (εr 1.9 to 4)
Non-conductive liquids, e.g. gasoline, oil, toluene, etc.
•C (εr 4 to 10)
e.g. concentrated acid, organic solvents, ester, aniline, etc.
•D (εr >10)
Conductive liquids, aqueous solutions, diluted acids, bases and alcohol
Measurement of the following media with absorbing gas phase
For example:
• Ammonia
• Acetone
• Methylene chloride
• Methyl ethyl ketone
• Propylene oxide
• VCM (vinyl chloride monomer)
To measure absorbing gases, either use a guided radar, measuring devices with another
measuring frequency or another measuring principle.
If measurements must be performed in one of these media, please contact Endress+Hauser.
For the dielectric constants (DC values) of many media commonly used in industry, please refer
to:
• Dielectric constant (DC value) Compendium CP01076F
• The Endress+Hauser "DC Values app" (available for Android and iOS)
Measurement in storage vessel
Storage vessel - measuring conditions
Calm medium surface (e.g. bottom filling, filling via immersion tube or rare filling from above)
Integrated antenna, PEEK, 20 mm (0.75 in) in storage vessel
Media group Measuring range
A0 (εr 1.2 to 1.4) 1.5 m (5 ft)
A (εr 1.4 to 1.9) 2.5 m (8 ft)
B (εr 1.9 to 4) 5 m (16 ft)
C (εr 4 to 10) 8 m (26 ft)
D (εr >10) 10 m (33 ft)

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Antenna, PTFE cladded flush mount, 50 mm (2 in) in storage vessel
Media group Measuring range
A0 (εr 1.2 to 1.4) 7 m (23 ft)
A (εr 1.4 to 1.9) 12 m (39 ft)
B (εr 1.9 to 4) 23 m (75 ft)
C (εr 4 to 10) 40 m (131 ft)
D (εr >10) 50 m (164 ft)
Antenna, PTFE cladded flush mount, 80 mm (3 in) in storage vessel
Media group Measuring range
A0 (εr 1.2 to 1.4) 22 m (72 ft)
A (εr 1.4 to 1.9) 40 m (131 ft)
B (εr 1.9 to 4) 50 m (164 ft)
C (εr 4 to 10) 65 m (231 ft)
D (εr >10) 80 m (262 ft)
Cladded antenna, PEEK, 20 mm (0.75 in) in storage vessel
Media group Measuring range
A0 (εr 1.2 to 1.4) 1.5 m (5 ft)
A (εr 1.4 to 1.9) 2.5 m (8 ft)
B (εr 1.9 to 4) 5 m (16 ft)
C (εr 4 to 10) 8 m (26 ft)
D (εr >10) 10 m (33 ft)

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Cladded antenna, PEEK, 40 mm (1.5 in) in storage vessel
Media group Measuring range
A0 (εr 1.2 to 1.4) 3 m (10 ft)
A (εr 1.4 to 1.9) 6 m (20 ft)
B (εr 1.9 to 4) 11 m (36 ft)
C (εr 4 to 10) 15 m (49 ft)
D (εr >10) 22 m (72 ft)
Measurement in buffer vessel
Buffer vessel - measuring conditions
Moving medium surface (e.g. permanent free filling from above, mixing jets)
Integrated antenna, PEEK, 20 mm (0.75 in) in buffer vessel
Media group Measuring range
A0 (εr 1.2 to 1.4) 1 m (3.3 ft)
A (εr 1.4 to 1.9) 1.5 m (5 ft)
B (εr 1.9 to 4) 3 m (10 ft)
C (εr 4 to 10) 6 m (20 ft)
D (εr >10) 8 m (26 ft)
Antenna, PTFE cladded flush mount, 50 mm (2 in) in buffer vessel
Media group Measuring range
A0 (εr 1.2 to 1.4) 4 m (13 ft)
A (εr 1.4 to 1.9) 7 m (23 ft)
B (εr 1.9 to 4) 13 m (43 ft)
C (εr 4 to 10) 28 m (92 ft)
D (εr >10) 44 m (144 ft)

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Antenna, PTFE cladded flush mount, 80 mm (3 in) in buffer vessel
Media group Measuring range
A0 (εr 1.2 to 1.4) 12 m (39 ft)
A (εr 1.4 to 1.9) 23 m (75 ft)
B (εr 1.9 to 4) 45 m (148 ft)
C (εr 4 to 10) 60 m (197 ft)
D (εr >10) 70 m (230 ft)
Cladded antenna, PEEK, 20 mm (0.75 in) in buffer vessel
Media group Measuring range
A0 (εr 1.2 to 1.4) 1 m (3.3 ft)
A (εr 1.4 to 1.9) 1.5 m (5 ft)
B (εr 1.9 to 4) 3 m (10 ft)
C (εr 4 to 10) 6 m (20 ft)
D (εr >10) 8 m (26 ft)
Cladded antenna, PEEK, 40 mm (1.5 in) in buffer vessel
Media group Measuring range
A0 (εr 1.2 to 1.4) 1.5 m (5 ft)
A (εr 1.4 to 1.9) 3 m (10 ft)
B (εr 1.9 to 4) 6 m (20 ft)
C (εr 4 to 10) 13 m (43 ft)
D (εr >10) 20 m (66 ft)
Measurement in vessel with agitator
Vessel with agitator - measuring conditions
Turbulent medium surface (e.g. from filling from above, stirrers and baffles)

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Integrated antenna, PEEK, 20 mm (0.75 in) in vessel with agitator
Media group Measuring range
A (εr 1.4 to 1.9) 1 m (3.3 ft)
B (εr 1.9 to 4) 1.5 m (5 ft)
C (εr 4 to 10) 3 m (10 ft)
D (εr >10) 5 m (16 ft)
Antenna, PTFE cladded flush mount, 50 mm (2 in) in vessel with agitator
Media group Measuring range
A0 (εr 1.2 to 1.4) 2 m (7 ft)
A (εr 1.4 to 1.9) 4 m (13 ft)
B (εr 1.9 to 4) 7 m (23 ft)
C (εr 4 to 10) 15 m (49 ft)
D (εr >10) 25 m (82 ft)
Antenna, PTFE cladded flush mount, 80 mm (3 in) in vessel with agitator
Media group Measuring range
A0 (εr 1.2 to 1.4) 7 m (23 ft)
A (εr 1.4 to 1.9) 13 m (43 ft)
B (εr 1.9 to 4) 25 m (82 ft)
C (εr 4 to 10) 50 m (164 ft)
D (εr >10) 60 m (197 ft)

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Cladded antenna, PEEK, 20 mm (0.75 in) in vessel with agitator
Media group Measuring range
A (εr 1.4 to 1.9) 1 m (3.3 ft)
B (εr 1.9 to 4) 1.5 m (5 ft)
C (εr 4 to 10) 3 m (10 ft)
D (εr >10) 5 m (16 ft)
Cladded antenna, PEEK, 40 mm (1.5 in) in vessel with agitator
Media group Measuring range
A0 (εr 1.2 to 1.4) 1 m (3.3 ft)
A (εr 1.4 to 1.9) 1.5 m (5 ft)
B (εr 1.9 to 4) 3 m (10 ft)
C (εr 4 to 10) 7 m (23 ft)
D (εr >10) 11 m (36 ft)
Operating frequency Approx. 80 GHz
Up to 8 devices can be installed in a tank without the devices mutually influencing one another.
Transmission power • Peak power: <1.5 mW
• Average output power: <70 µW
Output
PROFIBUS PA According to EN 50170 Volume 2, IEC 61158-2
Signal coding:
Manchester Bus Powered (MBP) type 1
Data transmission rate:
31.25 kBit/s, voltage mode
Galvanic isolation:
Yes
Signal on alarm Diagnostics in accordance with PROFIBUS PA Profile 3.02
Local display
Status signal (in accordance with NAMUR Recommendation NE 107):
Plain text display

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Operating tool via service interface (CDI)
Status signal (in accordance with NAMUR Recommendation NE 107):
Plain text display
Operating tool via PROFIBUS PA communication
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, weight, flow or volume.
Pre-programmed linearization curves
Linearization tables for calculating the volume in the following vessels are preprogrammed into the
device:
• Pyramid bottom
• Conical bottom
• Angled bottom
• Horizontal cylinder
• Sphere
Other linearization tables of up to 32 value pairs can be entered manually.
Protocol-specific data PROFIBUS PA
Manufacturer ID:
17 (0x11)
Ident number:
0x1568 or 0x9700
Profile version:
3.02
GSD file and version
Information and files available at:
•www.endress.com
On the product page for the device: Documents/Software → Device drivers
•www.profibus.com
Output values
Analog Input:
• Level linearized
• Distance
• Volume
• Terminal voltage
• Electronic temperature
• Sensor temperature
• Absolute echo amplitude
• Relative echo amplitude
• Area of incoupling
• Build-up index, optional (Guidance → Heartbeat Technology → Build-up detection → Build-up
index)
• Foam index, optional (Diagnostics → Heartbeat Technology → Foam detection → Foam index)
Digital Input:
Is only available if the "Heartbeat Verification + Monitoring" application package was selected.
• 168 Build-up detected, optional (Guidance → Heartbeat Technology → Build-up detection → 168
Build-up detected)
• 952 Foam detected, optional (Guidance → Heartbeat Technology → Foam detection → 952 Foam
detected)
Input values
Analog Output:
Analog value from PLC to be indicated on the display

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Supported functions
• Identification & maintenance
Straightforward device identification on the part of the control system and nameplate
• Automatic Ident Number adoption
GSD compatibility mode for generic profile 0x9700 "Transmitter with 1 Analog Input"
• Physical layer diagnostics
Installation check of the PROFIBUS segment and device using terminal voltage and message
monitoring
• PROFIBUS upload/download
Reading and writing parameters is up to ten times faster with PROFIBUS upload/download
• Condensed status
Straightforward and self-explanatory diagnostic information by categorizing diagnostic messages
that occur
Power supply
Terminal assignment Single compartment housing
+
-
1
2
3
A0042594
 4 Connection terminals and ground terminal in the connection compartment
1 Positive terminal
2 Negative terminal
3 Internal ground terminal

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Dual compartment housing
+
-
12
3
A0042803
 5 Connection terminals and ground terminal in the connection compartment
1 Positive terminal
2 Negative terminal
3 Internal ground terminal
Dual compartment housing, L-form
+
-
1
2
3
A0045842
 6 Connection terminals and ground terminal in the connection compartment
1 Positive terminal
2 Negative terminal
3 Internal ground terminal
Terminals • Supply voltage and internal ground terminal: 0.5 to 2.5 mm2 (20 to 14 AWG)
• External ground terminal: 0.5 to 4 mm2 (20 to 12 AWG)
Available connectors In the case of devices with a plug, it is not necessary to open the housing for connection
purposes.
Use the enclosed seals to prevent the penetration of moisture into the device.

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Devices with M12 plug
2
1
3
4
A0011175
 7 View of the plug-in connection on the device
1 Signal +
2 Not assigned
3 Signal –
4 Ground
Various M12 sockets are available as accessories for devices with M12 plugs.
Supply voltage The supply voltage depends on the selected type of device approval
Non-hazardous, Ex d, Ex e 9 to 32 VDC
Ex i 9 to 30 VDC
Nominal current 14 mA
Failure current FDE (Fault
Disconnection Electronic)
0 mA
• Use only suitable and certified Profibus PA components (e.g. DP/PA segment coupler) for the
power supply
• FISCO/FNICO-compliant according to IEC 60079-27
• The supply is not polarity-dependent
Device display and Bluetooth
The display background lighting and Bluetooth function (order option) is guaranteed across the
entire supply voltage range. The Bluetooth function can be restricted at high ambient temperatures.
Potential equalization The protective ground on the device must not be connected. If necessary, the potential matching line
can be connected to the outer ground terminal of the transmitter before the device is connected.
1
B
1
D
1
A
1
E
1
C
A0046583
A Single compartment housing, plastic
B Single compartment housing, aluminum
C Single compartment housing, 316L hygiene (Ex device)
D Dual compartment housing
E Dual compartment housing, L-form
1 Ground terminal for connecting the potential matching line

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LWARNING
Explosion Hazard!
‣Please refer to the separate documentation on applications in hazardous areas for the safety
instructions.
For optimum electromagnetic compatibility:
• Keep the potential matching line as short as possible
• Observe a cross-section of at least 2.5 mm2 (14 AWG)
Cable entries
11 11
2
AB D E
2 2 2
C
1
2
A0046584
A Single compartment housing, plastic
B Single compartment housing, aluminum
C Single compartment housing, 316L hygiene
D Dual compartment housing
E Dual compartment housing, L-form
1 Cable entry
2 Dummy plug
The type of cable entry depends on the device version ordered.
Always route connecting cables downwards so that moisture cannot penetrate the connection
compartment.
If necessary, create a drip loop or use a weather protection cover.
Cable specification Rated cross-section
• Supply voltage
0.5 to 2.5 mm2 (20 to 13 AWG)
• Protective earth or grounding of the cable shield
> 1 mm2 (17 AWG)
• External ground terminal
0.5 to 4 mm2 (20 to 12 AWG)
Cable outer diameter
The cable outer diameter depends on the cable gland used
• Coupling, plastic:
⌀5 to 10 mm (0.2 to 0.38 in)
• Coupling, nickel-plated brass:
⌀7 to 10.5 mm (0.28 to 0.41 in)
• Coupling, stainless steel:
⌀7 to 12 mm (0.28 to 0.47 in)
Use a twisted, shielded twin-core cable, preferably cable type A.
For further information on the cable specification:
• Operating Instructions BA00034S "PROFIBUS DP/PA: Guidelines for planning and
commissioning"
• PROFIBUS Assembling Guideline 8.022
• IEC 61158-2 (MBP).
Overvoltage protection The overvoltage protection can optionally be ordered as a "Mounted accessory" via the product
structure
Devices without optional overvoltage protection
The equipment fulfills the requirements of the product standard IEC / DIN EN 61326-1 (Table 2
Industrial Environment).

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Depending on the type of port (DC power supply, input/output port) different testing levels according
to IEC / DIN EN 61326-1 against transient overvoltages (Surge) are applied (IEC / DIN EN
61000-4-5 Surge):
Test level on DC power ports and input/output ports is 1 000 V line to earth
Devices with optional overvoltage protection
• Spark-over voltage: min. 400 VDC
• Tested according to IEC / DIN EN 60079-14 sub chapter 12.3 (IEC / DIN EN 60060-1 chapter 7)
• Nominal discharge current: 10 kA
NOTICE
Device could be destroyed
‣Always ground device with integrated overvoltage protection.
Overvoltage category
Overvoltage category II
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 %
• Reflector: metal plate with diameter ≥ 1 m (40 in)
• No major interference reflections inside the signal beam
Maximum measured error Reference accuracy
Accuracy
The accuracy is the sum of the non-linearity, non-repeatability and hysteresis.
• Measuring distance up to 0.8 m (2.62 ft): max. ±4 mm (±0.16 in)
• Measuring distance > 0.8 m (2.62 ft): ±1 mm (±0.04 in)
Non-repeatability
Non-repeatability is already included in the accuracy.
≤ 1 mm (0.04 in)
If conditions deviate from the reference operating conditions, the offset/zero point that results
from the installation conditions can be up to ±4 mm (±0.16 in). This additional offset/zero
point can be eliminated by entering a correction (Level correction parameter) during
commissioning.

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Differing values in near-range applications
0.8 (2.62)
4 (0.16)
1 (0.04)
-1 (-0.04)
-4 (-0.16)
D [m (!)]
∆[mm (in)]
R
0
A0032636
 8 Maximum measured error in near-range applications
Δ Maximum measured error
R Reference point of the distance measurement
D Distance from reference point of antenna
Measured value resolution Dead band according to DIN EN IEC 61298-2/DIN EN IEC 60770-1:
Digital: 1 mm
Response time According to DIN EN IEC 61298-2 / DIN EN IEC 60770-1 , the step response time is the time
following an abrupt change in the input signal up until the changed output signal has adopted 90 %
of the steady-state value for the first time.
The response time can be configured.
The following step response times apply (in accordance with DIN EN IEC 61298-2/DIN EN IEC
60770-1) when damping is switched off:
• Pulse frequency ≥ 5/s (cycle time ≤ 200 ms)
• Step response time < 1 s
Influence of ambient
temperature
The output changes due to the effect of the ambient temperature with respect to the reference
temperature.
The measurements are performed according to DIN EN IEC 61298-3/DIN EN IEC 60770-1
Average TC = 2 mm/10 K
Influence of gas phase High pressure reduces the speed of propagation of the measuring signals in the gas/vapor above the
medium. This effect depends on the type of gas phase and its temperature. This results in a
systematic measured error that increases with increasing distance between the reference point of
the measurement (flange) and the surface of the product. The following table shows this measured
error for some typical gases/vapors (with regard to the distance, a positive value means that an
excessively large distance is measured):
Measured error for some typical gases/vapors
Gas phase Temperature Pressure
1 bar (14.5 psi) 10 bar (145 psi) 25 bar (362 psi)
Air/nitrogen +20 °C (+68 °F) 0.00 % +0.22 % +0.58 %
+200 °C (+392 °F) –0.01 % +0.13 % +0.36 %
+400 °C (+752 °F) –0.02 % +0.08 % +0.29 %
Hydrogen +20 °C (+68 °F) –0.01 % +0.10 % +0.25 %
+200 °C (+392 °F) –0.02 % +0.05 % +0.17 %

Micropilot FMR63B PROFIBUS PA
20 Endress+Hauser
Gas phase Temperature Pressure
1 bar (14.5 psi) 10 bar (145 psi) 25 bar (362 psi)
+400 °C (+752 °F) –0.02 % +0.03 % +0.11 %
Water (saturated steam) +100 °C (+212 °F) +0.02 % - -
+180 °C (+356 °F) - +2.10 % -
+263 °C (+505 °F) - - +4.15 %
+310 °C (+590 °F) - - -
+364 °C (+687 °F) - - -
With a known, constant pressure, it is possible to compensate for this measured error with a
linearization, for example.
Mounting
Mounting location
A
123
A0016882
A Recommended distance from wall to nozzle outer edge ~ 1/6 of the vessel diameter. The device should never
be mounted closer than 15 cm (5.91 in) to the tank wall.
1 Use of a weather protection cover; protection from direct sunlight or rain
2 Installation in the center, interference can cause signal loss
3 Do not install above the filling curtain