Endress+Hauser Micropilot FMR20 Manual

Level measurement for liquids
Application
• Ingress protection: IP66/68 / NEMA 4X/6P
• Measuring range: up to 20 m (66 ft)
• Process temperature: –40 to 80 °C (–40 to 176 °F)
• Process pressure: –1 to 3 bar (–14 to 43 psi)
• Accuracy: up to ± 2 mm (0.08 in)
• International explosion protection certificates
Your benefits
• Level measurement for liquids in storage tanks, open basins, pump shafts and
canal systems
• Radar measuring device with Bluetooth® wireless technology and HART
communication
• Simple, safe and secure wireless remote access – ideal for installation in hazardous
areas or places difficult to reach
• Commissioning, operation and maintenance via free iOS / Android app SmartBlue
– saves time and reduces costs
• Full PVDF body - for a long sensor lifetime
• Hermetically sealed wiring and fully potted electronics – eliminates water ingress
and allows operation under harsh environmental conditions
• Most compact radar due to unique radar chip design – fits in limited space
installations
• Best price-performance-ratio radar
Products Solutions Services
Technical Information
Micropilot FMR20
HART
Free space radar
TI01267F/00/EN/08.20
71492916
2020-08-17

Micropilot FMR20 HART
2 Endress+Hauser
Table of contents
Important document information ............... 3
Symbols used ................................ 3
Terms and abbreviations ..................... 4
Product life cycle ............................ 5
Engineering ................................. 5
Procurement ................................ 5
Installation ................................. 5
Commissioning ............................... 5
Operation .................................. 5
Maintenance ................................ 5
Retirement .................................. 5
Measuring principle ......................... 6
Input ...................................... 6
Output .................................... 6
Input ..................................... 7
Measured variable ............................. 7
Measuring range .............................. 7
Operating frequency ........................... 7
Transmission power ............................ 7
Output ................................... 7
Output signal ................................ 7
Digital output ................................ 7
Signal on alarm ............................... 8
Linearization ................................ 8
Protocol-specific data, HART .................. 8
Electrical connection ......................... 9
Cable assignment ............................. 9
Supply voltage ............................... 9
Power consumption ............................ 9
Current consumption ........................... 9
Starting time ................................ 9
Power supply failure .......................... 10
Connecting the device ......................... 10
Cable specification ............................ 12
Overvoltage protection ......................... 12
Performance characteristics .................. 13
Reference operating conditions ................... 13
Maximum measured error ....................... 13
Measured value resolution ...................... 13
Response time .............................. 13
Influence of ambient temperature ................. 14
Installation ............................... 14
Installation conditions ......................... 14
Environment .............................. 20
Ambient temperature range ..................... 20
Storage temperature .......................... 20
Climate class ............................... 20
Operating altitude as per IEC 61010-1 Ed.3 ........... 20
Degree of protection .......................... 20
Vibration resistance ........................... 20
Electromagnetic compatibility (EMC) ............... 21
Process .................................. 22
Process temperature, process pressure ............... 22
Dielectric constant ............................ 22
Mechanical construction .................... 23
Dimensions ................................ 23
Weight ................................... 27
Materials .................................. 28
Connecting cable ............................. 28
Operability ............................... 28
Operating concept ............................ 28
Operation via Bluetooth® wireless technology .......... 28
Via HART protocol ............................ 29
Certificates and approvals ................... 30
CE mark ................................... 30
RoHS ..................................... 30
EAC conformity .............................. 30
RCM-Tick marking ............................ 30
Approvals ................................. 30
Explosion-protected smartphones and tablets .......... 30
Pressure equipment with allowable pressure
≤ 200 bar (2 900 psi) .......................... 30
EN 302729-1/2 radio standard ................... 31
FCC / Industry Canada ......................... 31
Japanese Radio Law and Japanese Telecommunications
Business Law Compliance ....................... 32
Mexico ................................... 33
Other standards and guidelines ................... 33
Ordering information ....................... 34
Accessories ............................... 34
Device-specific accessories ...................... 34
Communication-specific accessories ................ 55
Service-specific accessories ...................... 55
System components ........................... 56
Supplementary documentation ............... 56
Brief Operating Instructions (KA) .................. 56
Operating Instructions (BA) ..................... 56
Safety Instructions (XA) ........................ 56
Registered trademarks ...................... 57

Micropilot FMR20 HART
Endress+Hauser 3
Important document information
Symbols used Symbols for certain types of information and graphics
Permitted
Procedures, processes or actions that are permitted
Forbidden
Procedures, processes or actions that are forbidden
Tip
Indicates additional information
Reference to documentation
Reference to graphic
Notice or individual step to be observed
1.
,
2.
,
3.
Series of steps
Result of a step
1, 2, 3, ...
Item numbers
A, B, C, ...
Views

Micropilot FMR20 HART
4 Endress+Hauser
Terms and abbreviations
BA
Document type "Operating Instructions"
KA
Document type "Brief Operating Instructions"
TI
Document type "Technical Information"
SD
Document type "Special Documentation"
XA
Document type "Safety Instructions"
PN
Nominal pressure
MWP
MWP (Maximum working pressure/max. process pressure)
The MWP can also be found on the nameplate.
ToF
Time of Flight
FieldCare
Scalable software tool for device configuration and integrated plant asset management solutions
DeviceCare
Universal configuration software for Endress+Hauser HART, PROFIBUS, FOUNDATION Fieldbus and
Ethernet field devices
DTM
Device Type Manager
εr (Dk value)
Relative dielectric constant
Operating tool
The term "operating tool" is used in place of the following operating software:
• FieldCare / DeviceCare, for operation via HART communication and PC
• SmartBlue (app), for operation using an Android or iOS smartphone or tablet
BD
Blocking Distance; no signals are analyzed within the BD.
PLC
Programmable logic controller (PLC)

Micropilot FMR20 HART
Endress+Hauser 5
Product life cycle
Engineering • Proven radar measuring technology
• Level measurement and open channel flow measurement for Ex and non-Ex areas
• Flooding detection
• Wide range of installation possibilities and accessories
• Highest degree of ingress protection
• 2D/3D drawings
• Spec Sheet Producer
• Applicator Selection tool for selecting the perfect measurement solution
Device not compatible with transmitters and sensors that use ultrasonic measurement
technology (e.g. Prosonic FMU9x, FDU9x)
Procurement • Best price-performance-ratio radar
• Global availability
• Order code includes variety of mounting accessories and decentralized RIA15 process indicator for
HART
Installation • Rear and front thread for flexible installation
• Slip-on flange for nozzle installation
• Complete measuring point: including mounting accessory, RIA15 and flooding protection tube
Commissioning • Quick and easy setup with the SmartBlue app and DeviceCare / FieldCare or RIA15
• No additional tools or adapters required
• Local languages (up to 15)
Operation • Continuous self-monitoring
• Diagnostics information according to NAMUR NE107 with remedial measures in the form of plain
text messages
• Signal curve via SmartBlue (app) and DeviceCare / FieldCare
• Encrypted single point-to-point data transmission (tested by Fraunhofer Institute) and password-
protected communication via Bluetooth® wireless technology
Maintenance • No maintenance required
• Technical experts on-call around the world
Retirement • Environmentally responsible recycling concepts
• RoHS compliance (restriction of certain hazardous substances), lead-free soldering of electronic
components

Micropilot FMR20 HART
6 Endress+Hauser
Measuring principle
The Micropilot is a "downward-looking" measuring system, which functions according to the time-of-
flight (ToF) method. It measures the distance from the reference point R to the product surface.
Radar pulses are emitted by an antenna, reflected off the product surface and received again by the
radar system.
D
Q
R100%
0%
D
L
F
E
A0028409
 1 Level / flow calibration parameter
E Empty calibration (= zero)
F Full calibration (= span)
D Measured distance
L Level (L = E - D)
Q Flow rate at measuring weirs or channels (calculated from the level using linearization)
R Reference point
Input The reflected radar pulses are received by the antenna and transmitted to the electronics. A
microprocessor evaluates the signals and identifies the level echo caused by the reflection of the
radar pulses at the product surface. This clear signal detection system benefits from over 30 years'
experience with time-of-flight procedures.
The distance D to the product surface is proportional to the time of flight t of the pulse:
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
Output The Micropilot is calibrated by entering the empty distance E (= zero point) and the full distance F (=
span).
• Current output: 4 to 20 mA
• Digital output (HART, SmartBlue): 0 to 15 m (0 to 49 ft) 1) or 0 to 20 m (0 to 66 ft) depending on
antenna version
1) order code 010 (approval) "GA", "GB", "GR": 0 to 10 m (0 to 32.8 ft)

Micropilot FMR20 HART
Endress+Hauser 7
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 Maximum measuring range
• Device with 40 mm (1.5 in) antenna: 15 m (49 ft) 2)
• Device with 80 mm (3 in) antenna: 20 m (66 ft)
Installation requirements
• Recommended tank height > 1.5 m (5 ft) for media with low εr value
• Open channel minimum width 0.5 m (1.6 ft)
• Calm surfaces
• No agitators
• No buildup
• Relative dielectric constant εr > 4
Contact Endress+Hauser for lower εr values
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.
Media groups
• εr = 4 to 10
e.g. concentrated acid, organic solvents, ester, aniline, alcohol, acetone.
• εr > 10
e.g. conductive liquids, aqueous solutions, diluted acids and bases
Reduction of the maximum possible measuring range by:
• Media with bad reflective properties (= low εr value)
• Formation of buildup, particularly of moist products
• Strong condensation
• Foam generation
• Freezing of sensor
Operating frequency K-band (~ 26 GHz)
Transmission power Mean power density in the direction of the beam
• At a distance of 1 m (3.3 ft): < 12 nW/cm2
• At a distance of 5 m (16 ft): < 0.4 nW/cm2
Output
Output signal 4 to 20 mA
An 4 to 20 mA interface is used for measured value output and to power to the device.
Digital output HART®
• Signal encoding; FSK ±0.5 mA over current signal
• Data transmission rate;1 200 Bit/s
Bluetooth® wireless technology (available as an optional extra)
The device has a Bluetooth® wireless technology interface and can be operated and configured via
this interface using the SmartBlue app.
2) order code 010 (approval) "GA", "GB", "GR": 10 m (32.8 ft)

Micropilot FMR20 HART
8 Endress+Hauser
• The range under reference conditions is 25 m (82 ft)
• Incorrect operation by unauthorized persons is prevented by means of encrypted communication
and password encryption
• The Bluetooth® wireless technology interface can be deactivated
Signal on alarm Depending on the interface, failure information is displayed as follows:
• Current output
Alarm current: 22.5 mA (in accordance with NAMUR recommendation NE 43)
• Operating tool via digital communication (HART) or SmartBlue (app)
• Status signal (as per NAMUR Recommendation NE 107)
• Plain text display with remedial action
Linearization The linearization function of the device allows the conversion of the measured value into any unit of
length, weight, flow or volume. In DeviceCare and FieldCare, there are preprogrammed linearization
tables for volume calculation in vessels.
Pre-programmed linearization curves
• Horizontal cylindrical tank
• Sphere
• Tank with pyramid bottom
• Tank with conical bottom
• Tank with flat bottom
Other linearization tables of up to 32 value pairs can be entered manually.
Protocol-specific data, HART
Manufacturer ID
17 (0x11)
Device type ID
44 (0x112c)
HART specification
7.0
Device description files (DTM)
Information and files under:
• www.endress.com
• www.hartcomm.org
HART load
Min. 250 Ω
HART device variables
Assignment of HART device variables is fixed and cannot be changed.
•Measured values for PV (primary variable)
Level linearized
•Advanced diag. measured values for SV (secondary variable)
Distance
•Advanced diag. measured values for TV (tertiary variable)
Relative echo amplitude
•Advanced diag. measured values for QV (quarternary variable)
Temperature
Supported functions
Additional transmitter status
Multidrop current
4 mA
Time for connection setup
< 1 s

Micropilot FMR20 HART
Endress+Hauser 9
Electrical connection
Cable assignment
-
+
12
A0028954
 2 Cable assignment
1 Plus, brown wire
2 Minus, blue wire
Supply voltage 10.5 to 30 VDC
An external power supply is necessary.
R [ ]W
U0[V]
10
10.5 21.75
20 30
0
500
A0029226
 3 Maximum load R, depending on supply voltage U0 of power supply unit
Battery operation
The sensor's Bluetooth® wireless technology communication can be disabled to increase the
operating life of the battery.
Potential equalization
No special measures for potential equalization are required.
Various power supply units can be ordered as an accessory from Endress+Hauser.
Power consumption Maximum input power: 675 mW
Current consumption • Maximum input current: <25 mA
• Maximum start-up current: 3.6 mA
Starting time First stable measured value after 20 s (with supply voltage = 24 VDC)

Micropilot FMR20 HART
10 Endress+Hauser
Power supply failure The configuration remains stored in the sensor.
Connecting the device 4 to 20 mA HART block diagram
Connection of the device with HART communication, power source and 4 to 20 mA display
2
3
Y+ +
- -
I
1
mA
A0028908
 4 Block diagram of HART connection
1 Device with HART communication
2 HART resistor
3 Power supply
The HART communication resistor of 250 Ω in the signal line is always necessary in the case of
a low-impedance power supply.
The voltage drop to be taken into account is:
Max. 6 V for 250 Ω communication resistor

Micropilot FMR20 HART
Endress+Hauser 11
HART device block diagram, connection with RIA15
FMR20 with RIA15 (incl. option for FMR20 basic configuration)
The RIA15 remote indicator can be ordered together with the device.
Product structure, feature 620 "Accessory enclosed":
• Option R4 "Remote indicator RIA15 non-hazardous area, field housing"
• Option R5 "Remote indicator RIA15 with explosion protection approval, field housing"
Alternatively available as an accessory, for details see Technical Information TI01043K and
Operating Instructions BA01170K
Terminal assignment RIA15
•+
Positive connection, current measurement
•-
Negative connection, current measurement (without backlighting)
•LED
Negative connection, current measurement (with backlighting)
•
Functional grounding: Terminal in housing
The RIA15 process indicator is loop-powered and does not require any external power supply.
The voltage drop to be taken into account is:
• ≤1 V in the standard version with 4 to 20 mA communication
• ≤1.9 V with HART communication
• and an additional 2.9 V if display light is used
Connection of the HART device and RIA15 without backlighting
Y
I
RsDC
1
2
3
LED
- +
A0019567
 5 Block diagram of HART device with RIA15 process indicator without light
1 Device with HART communication
2 Power supply
3 HART resistor
Connection of the HART device and RIA15 with backlighting
Y
I
RsDC
1
2
3
LED
- +
A0019568
 6 Block diagram of HART device with RIA15 process indicator with light
1 Device with HART communication
2 Power supply
3 HART resistor

Micropilot FMR20 HART
12 Endress+Hauser
Block diagram of HART device, RIA15 with installed HART communication resistor module
The HART communication module for installation in the RIA15 can be ordered together with
the device.
Product structure, feature 620 "Accessory enclosed":
Option R6 "HART communication resistor hazardous / non-hazardous area"
The voltage drop to be taken into account is:
Max. 7 V
Alternatively available as an accessory, for details see Technical Information TI01043K and
Operating Instructions BA01170K
Connection of the HART communication resistor module, RIA15 without backlighting
1
LED
- +
3
2
Y
I
RsDC
A0020839
 7 Block diagram of HART device, RIA15 without light, HART communication resistor module
1 HART communication resistor module
2 Device with HART communication
3 Power supply
Connection of the HART communication resistor module, RIA15 with backlighting
1
3
2
Y
I
RsDC
LED
- +
A0020840
 8 Block diagram of HART device, RIA15 with light, HART communication resistor module
1 HART communication resistor module
2 Device with HART communication
3 Power supply
Cable specification Unshielded cable, wire cross-section 0.75 mm2
• Resistant to UV and weather conditions as per ISO 4892-2
• Flame resistance according to IEC 60332-1-2
As per IEC/EN 60079-11 section 10.9, the cable is designed for a tensile strength of 30 N (6.74 lbf)
(over a period of 1 h).
The device is supplied with 5 m (16 ft) cable length as standard. Cable lengths 10 m (33 ft) and
20 m (66 ft) are optionally available.
Lengths can be selected by the user up to an overall length of 300 m (980 ft) and are available by the
meter (order option "8") or foot (order option "A").
Overvoltage protection The device is equipped with integrated overvoltage protection.

Micropilot FMR20 HART
Endress+Hauser 13
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 Typical data under reference operating conditions: DIN EN 61298-2, percentage values in relation to
the span.
Output, digital
(HART, SmartBlue (app))
• Sum of non-linearity, non-repeatability and hysteresis: ±2 mm (±0.08 in)
• Offset/zero point: ±4 mm (±0.16 in)
Output, analog
Only relevant for 4-20mA current output; add error of the analog value to the digital value
• Sum of non-linearity, non-repeatability and hysteresis: ±0.02 %
• Offset/zero point: ±0.03 %
Differing values in near-range applications
0
0.5 (1.67) D[m ](ft)
∆[mm (in)]
2 (0.08)
10 (0.39)
-20 (-0.79)
20 (0.79)
-2 (-0.08)
-10 (-0.39)
R
R
0.1 (0.33)
R
A0033255
 9 Maximum measured error in near-range applications; values for standard version
∆ Maximum measured error
R Reference point of the distance measurement
D Distance from reference point of antenna
Measured value resolution Dead band as per EN61298-2:
• Digital: 1 mm (0.04 in)
• Analog: 4 µA
Response time The response time can be configured. The following step response times apply (in accordance with
DIN EN 61298-2) when damping is switched off:
Tank height
<20 m (66 ft)
Sampling rate
1 s-1

Micropilot FMR20 HART
14 Endress+Hauser
Response time
<3 s
In accordance with DIN EN 61298-2, 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.
Influence of ambient
temperature
The measurements are carried out in accordance with EN 61298-3
• Digital (HART, Bluetooth® wireless technology):
Standard version: average TC = ±3 mm (±0.12 in)/10 K
• Analog (current output):
• Zero point (4 mA): average TK = 0.02 %/10 K
• Span (20 mA): average TK = 0.05 %/10 K
Installation
Installation conditions Installation types
B C D
A
EF
A0030605
 10 Wall, ceiling or nozzle installation
A Wall or ceiling mount, adjustable
B Mounted at front thread
C Mounted at rear thread
D Ceiling installation with counter nut (included in delivery)
E Horizontal installation in cramped spaces (wastewater shaft), 40 mm (1.5 in) antenna with flooding
protection tube (accessory) or 80 mm (3 in) antenna recommended
F Shaft wall mounting
Caution!
• The sensor cables are not designed as supporting cables. Do not use them for suspension
purposes.
• Always operate the device in a vertical position in free-space applications.

Micropilot FMR20 HART
Endress+Hauser 15
Position for installation on a vessel
A
BD
D
A0028410
 11 Installation position on a vessel
• If possible install the sensor so that its lower edge projects into the vessel.
• Recommended distance A wall - nozzle outer edge: ~ ¹⁄₆ of the vessel diameter D. Under no
circumstances should the device be mounted closer than 15 cm (5.91 in) to the vessel wall.
• Do not install the sensor in the middle of the vessel.
• Avoid measurements through the filling curtain.
• Avoid equipment such as limit switches, temperature sensors, baffles, heating coils etc.
• No signals are evaluated within the Blocking distance (BD). It can therefore be used to suppress
interference signals (e.g. the effects of condensate) in the vicinity of the antenna.
An automatic Blocking distance of at least 0.1 m (0.33 ft) is configured as standard. However, this
can be overwritten manually (0 m (0 ft) is also permitted).
Automatic calculation:
Blocking distance = Empty calibration - Full calibration - 0.2 m (0.656 ft).
Each time a new entry is made in the Empty calibration parameter or Full calibration parameter,
the Blocking distance parameter is recalculated automatically using this formula.
If the result of the calculation is a value < 0.1 m (0.33 ft), the Blocking distance of 0.1 m (0.33 ft)
will continue to be used.
Nozzle installation
The antenna should be located out of the nozzle for optimum measurement. The interior of the
nozzle must be smooth and may not contain any edges or welded joints. The edge of the nozzle
should be rounded if possible.
BA
L
D
L
D
L
D
L
D
A0028413
 12 Nozzle installation
A 80 mm (3 in) antenna
B 40 mm (1.5 in) antenna
The maximum length of the nozzle L depends on the nozzle diameter D.

Micropilot FMR20 HART
16 Endress+Hauser
Please note the limits for the diameter and length of the nozzle.
80 mm (3 in) antenna, installation inside nozzle
• D: min. 120 mm (4.72 in)
• L: max. 205 mm (8.07 in) + D × 4.5
80 mm (3 in) antenna, installation outside nozzle
• D: min. 80 mm (3 in)
• L: max. D × 4.5
40 mm (1.5 in) antenna, installation outside nozzle
• D: min. 40 mm (1.5 in)
• L: max. D × 1.5
40 mm (1.5 in) antenna, installation inside nozzle
• D: min. 80 mm (3 in)
• L: max. 140 mm (5.5 in) + D × 1.5
Device alignment for installation on a vessel
• Align the antenna vertically to the product surface.
• Align the eyelet with lug towards the vessel wall as well as possible.
90°
90°
90°
90°
90°
A0028927
 13 Device alignment for installation on a vessel
Beam angle
_
2
α
W = 2 × D × tan
α
D
W
A0033201
 14 Relationship between beam angle α, distance D and beamwidth diameter W
The beam angle is defined as the angle α, at which the power density of the radar waves reaches half
the value of the maximum power density (3 dB width). Microwaves are also emitted outside the
signal beam and can be reflected off interfering installations.

Micropilot FMR20 HART
Endress+Hauser 17
Beam diameter W as a function of beam angle α and distance D.
40 mm (1.5 in) antenna, α 30 °
W = D × 0.54
40 mm (1.5 in) antenna with flooding protection tube, α 12 °
W = D × 0.21
80 mm (3 in) antenna with or without flooding protection tube, α 12 °
W = D × 0.21
Measurement in plastic vessels
3
1
2
A0029540
 15 Measurement in a plastic vessel with a metallic, interfering installation outside of the vessel
1 Pipe, tubing
2 Ladder
3 Grate, railing
If the outer wall of the vessel is made of a non-conductive material (e.g. GFR), microwaves can also
be reflected by interfering installations outside of the vessel.
Please ensure there are no interfering installations made of a conductive material in the signal beam
(see the beam angle section for information on calculating the beamwidth diameter).
Please contact the manufacturer for further information.
Protective hood
For outdoor use, a protective hood is recommended.
The protective hood can be ordered as an accessory or together with the device via the product
structure "Accessory enclosed".

Micropilot FMR20 HART
18 Endress+Hauser
A0031277
 16 Protective hood, e.g. with 40 mm (1.5") antenna
The sensor is not completely covered by the protective hood.
Free-field measurement with flooding protection tube
The flooding protection tube ensures the sensor measures the maximum level even if it is completely
flooded.
In free-field installations and/or in applications where there is a risk of flooding, the flooding
protection tube must be used.
The flooding protection tube can be ordered as an accessory or together with the device via the
product structure "Accessory enclosed".
13
4
1
2
3
4
2
A0031093
 17 Function of flooding protection tube
1 Air pocket
2 O-ring (EPDM) seal
3 Blocking distance
4 Max. level
The tube is screwed directly onto the sensor and seals off the system by means of an O-ring making
it air-tight. In the event of flooding, the air pocket that formed in the tube ensures the measurement
of the maximum level at the end of the tube. Due to the fact that the Blocking distance is inside the
tube, multiple echoes are not analyzed.

Micropilot FMR20 HART
Endress+Hauser 19
Installation with mounting bracket, adjustable
The mounting bracket can be ordered as an accessory or together with the device via the product
structure "Accessory enclosed".
A0030606
 18 Installation with mounting bracket, adjustable
• Wall or ceiling installation is possible.
• Using the mounting bracket, position the antenna so that it is perpendicular to the product
surface.
NOTICE
There is no conductive connection between the mounting bracket and transmitter housing.
Electrostatic charging possible.
‣Integrate the mounting bracket in the local potential equalization system.
Cantilever installation, with pivot
The cantilever, wall bracket and mounting frame are available as accessories.
ABC
A0028412
 19 Cantilever installation, with pivot
A Cantilever with wall bracket
B Cantilever with mounting frame
C Cantilever can be turned (e.g., in order to position the device over the center of the flume)
Installation of horizontal mounting bracket for sewer shafts
The horizontal mounting bracket for sewer shafts is available as an accessory.

Micropilot FMR20 HART
20 Endress+Hauser
AB
A0043467
 20 Installation of horizontal mounting bracket for sewer shafts
A 40 mm (1.5 in) Antenna, with flooding protection tube (accessory)
B 80 mm (3 in) Antenna, without flooding protection tube
Mounting in a shaft
The pivoted mounting bracket is available as an accessory.
AB
A0037748
 21 Mounting in a shaft, pivotable and adjustable
A Arm with wall bracket
B Pivotable and adjustable arm (e.g. to align the device with the center of a channel)
Environment
Ambient temperature range Measuring device: –40 to +80 °C (–40 to +176 °F)
It may not be possible to use the Bluetooth connection at ambient temperatures
> 60 °C (140 °F).
Outdoor operation in strong sunlight:
• Mount the device in the shade.
• Avoid direct sunlight, particularly in warm climatic regions.
• Use a weather protection cover.
Storage temperature –40 to +80 °C (–40 to +176 °F)
Climate class DIN EN 60068-2-38 (test Z/AD)
Operating altitude as per
IEC 61010-1 Ed.3
Generally up to 2 000 m (6 600 ft) above sea level.
Degree of protection Tested acc. to:
• IP66, NEMA 4X
• IP68, NEMA 6P (24 h at 1.83 m (6.00 ft)1.83 m under water)
Vibration resistance DIN EN 60068-2-64/IEC 60068-2-64: 20 to 2 000 Hz, 1 (m/s2)2/Hz