Endress+Hauser Prosonic M FMU41 Technical specifications

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Brief Operating Instructions
Prosonic M FMU41
HART
Ultrasonic measuring technology
These Instructions are Brief Operating Instructions; they are
not a substitute for the Operating Instructions pertaining to
the device.
Detailed information about the device can be found in the
Operating Instructions and the other documentation:
Available for all device versions via:
• Internet: www.endress.com/deviceviewer
• Smart phone/tablet: Endress+Hauser Operations App
KA01423F/00/EN/01.22-00
71571000
2022-04-04

Associated documentation Prosonic M FMU41 HART
2 Endress+Hauser
1 Associated documentation
Order code:
Ext. ord. cd.:
Ser. no.:
www.endress.com/deviceviewer Endress+Hauser
Operations App
XXXXXXXXXXXX
XXXXX-XXXXXX
XXX.XXXX.XX
Serial number
1.
3.
2.
A0023555
2 About this document
2.1 Symbols
2.1.1 Safety symbols
DANGER
This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in
serious or fatal injury.
WARNING

Prosonic M FMU41 HART Basic safety instructions
Endress+Hauser 3
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.
2.1.2 Electrical symbols
Ground connection
Grounded clamp, which is grounded via a grounding system.
Protective earth (PE)
Ground terminals, which must be grounded prior to establishing any other connections. The
ground terminals are located on the inside and outside of the device.
Temperature resistance of the connection cables
Minimum value for the temperature resistance of the connection cables
2.1.3 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
1.
,
2.
,
3.
Series of steps
Result of an individual step
1, 2, 3 ... Item numbers
3 Basic safety instructions
3.1 Requirements for the personnel
To carry out their tasks, such as commissioning or maintenance, personnel must meet the
following requirements:
‣Trained specialists must have a qualification that is relevant to the specific function and
task.

Basic safety instructions Prosonic M FMU41 HART
4 Endress+Hauser
‣Must be authorized by the plant owner/operator.
‣Must be familiar with national regulations.
‣Must have read and understood the instructions in the manual and supplementary
documentation.
‣Must follow instructions and comply with general policies.
3.2 Intended use
Compact measuring device for continuous, non-contact level measurement. The measuring
range is up to 8 m (26 ft) for liquids and up to 3.5 m (11 ft) for bulk solids. Flow
measurements can be carried out in open flumes and weirs with the linearization function.
3.3 Workplace safety
When working on and with the device:
‣Wear the required protective equipment according to federal/national regulations.
3.4 Operational safety
Risk of injury!
‣Operate the device only if it is in proper technical condition, free from errors and faults.
‣The operator is responsible for the trouble-free operation of the device.
Modifications to the device
Unauthorized modifications to the device are not permitted and can lead to unforeseeable
dangers.
‣If modifications are nevertheless required, consult with Endress+Hauser.
Repair
To ensure continued operational safety and reliability:
‣Only perform repair work on the device if this is expressly permitted.
‣Observe federal/national regulations pertaining to the repair of an electrical device.
‣Use original spare parts and accessories from Endress+Hauser only.
3.5 Product safety
This device has been constructed and tested to state-of-the-art operational safety standards
and in accordance with good engineering practice. The device left the factory in a safe
operating condition.
3.5.1 CE mark
The device meets the legal requirements of the applicable EU Directives. These are listed in
the corresponding EU Declaration of Conformity along with the standards applied.
Endress+Hauser confirms successful testing of the device by affixing to it the CE mark.

Prosonic M FMU41 HART Incoming acceptance and product identification
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3.5.2 EAC conformity
The device meets the legal requirements of the applicable EAC Directives. These are listed in
the corresponding EAC Declaration of Conformity along with the standards applied.
Endress+Hauser confirms successful testing of the device by affixing to it the EAC mark.
3.6 IT security
We only provide a warranty if the device is installed and used as described in the Operating
Instructions.
Provide additional protection for the device and data transfer to/from the device
‣IT security measures defined in the plant owner/operator's own security policy must be
implemented by plant owners/operators themselves.
4 Incoming acceptance and product identification
4.1 Incoming acceptance
Check the following during goods acceptance:
 Are the order codes on the delivery note and the product sticker identical?
 Are the goods undamaged?
 Do the nameplate data match the ordering information on the delivery note?
 If necessary (see nameplate), are the Safety Instructions, e. g. XA, provided?
If one of these conditions is not satisfied, contact your Sales Center.
4.2 Product identification
The following options are available for identification of the device:
• Nameplate specifications
• Extended order code with breakdown of the device features on the delivery note
‣Enter serial number from nameplates in W@M Device Viewer
(www.endress.com/deviceviewer)
 All of the information on the measuring device and on the scope of the technical
documentation pertaining to the device is displayed.
‣Enter the serial number from the nameplate into the Endress+Hauser Operations App or
scan the 2-D matrix code on the nameplate.
 All of the information on the measuring device and on the scope of the technical
documentation pertaining to the device is displayed.

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4.3 Manufacturer address
Endress+Hauser SE+Co. KG
Hauptstraße 1
79689 Maulburg, Germany
Place of manufacture: See nameplate.
4.4 Storage and transport
• Pack the measuring device so that it is protected against impact.
The original packaging offers the best protection
• Permitted storage temperature: –40 to +80 °C (–40 to 176 °F)
4.4.1 Transporting the product to the measuring point
LCAUTION
The housing or flange can be damaged.
Risk of injury!
‣Transport the measuring device to the measuring point in its original packaging or by the
process connection.
‣Always secure lifting equipment (belts, lugs, etc.) at the process connection, while paying
attention to the center of gravity of the device to ensure that the device does not tilt or slip.
‣Follow the safety instructions and transport conditions for devices weighing more than
18 kg (39.6 lb)(IEC 61010).

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5 Mounting
5.1 Mounting requirements
5.1.1 Installation conditions for sensor for level measurements
34
15
6D
r
7
16
/!
2
!
A0038210
 1 Installation conditions
1 Distance to vessel wall: ¹⁄₆ of vessel diameter
2 Use of a weather protection cover; protection from direct sunlight or rain
3 Do not install the sensor in the middle of the vessel.
4 Avoid measurements through the filling curtain.
5 Do not install limit switches or temperature sensors inside the beam angle.
6 Measurement is affected by symmetrical fittings, e.g. heating coils and baffles.
7 Position the sensor so that it is perpendicular to the product surface.
• Install only one device per vessel: signals from multiple devices will interfere with each
other.
• Determine the detection range using a 3 dB beam angle α.
Further information is available in the Operating Instructions.
5.1.2 Installation conditions for the sensor for flow measurements
• Mount the measuring device on the upstream side immediately above the maximum upper
water level Hmax
• Take the blocking distance into account
• Position the measuring device in the center of the flume or weir

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• Align the sensor membrane so that it is parallel to the surface of the water
• Observe the installation clearance of the flume or weir
• Enter the "flow - level" ("Q/h curve") linearization curve via the FieldCare operating program
or manually via the local display
1 x b
b
BD
A
E
B C
V
Hmax = F
0
0
A0038222
 2 Khafagi-Venturi flume (example)
A Khafagi-Venturi flume
B Upstream side
C Downstream side
BD Blocking distance of the sensor
E Empty calibration (enter during commissioning)
Hmax Maximum upstream level
V Flow
b0Width of Khafagi-Venturi flume

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BD
E
≥ 2 Hmax
≥ 2 Hmax
a
Hmax (= F)
≥3 Hmax
A0038223
 3 Triangular weir (example)
BD Blocking distance of the sensor
E Empty calibration (enter during commissioning)
F Full calibration
Hmax Maximum upstream level

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5.1.3 Mounting examples
AB
C D
A0038234
 4 Mounting examples
A With counter nut
B With welding boss
C With mounting bracket
D With screw-in flange
5.1.4 Mounting the device
NOTICE
The device can be damaged.
‣Tighten the device at the threaded boss only, with maximum 20 Nm (14.75 lbf ft).

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60
A0020386
 5 Mounting at threaded boss, width across flats AF60
Turning the housing
1.
2.
4 mm
A0037777
 6 Turning the F12 or T12 housing, (F12 housing in example)
1. Loosen the securing screw.
2. Rotate the housing in the desired direction, maximum 350 °.
3. Tighten the securing screw, maximum torque 0.5 Nm (0.36 lbf ft).
4. Lock the securing screw; use a glue specifically for metal.
5.2 Measuring range
5.2.1 Sensor features
• Beam angle (α): 11°
• Blocking distance (BD): 0.35 m (1.1 ft)
• Maximum range for liquids: 8 m (26 ft)
• Maximum range for bulk solids: 3.5 m (11 ft)

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5.2.2 Blocking distance
NOTICE
If the blocking distance is undershot, this may cause a device malfunction.
‣Mount the measuring device high enough that the blocking distance is not reached at the
maximum fill level.
‣Define the safety distance (SD).
‣If the level enters the safety distance SD, the device generates a warning or alarm.
‣The measuring span F may not project into the blocking distance BD. Level echoes within
the blocking distance cannot be evaluated due to the transient response of the sensor.
F
E
BD
SD
A0038238
 7 Parameter for the correct operation of the device
BD Blocking distance
SD Safety distance
E Empty calibration
F Span
If the blocking distance cannot be maintained, use a pipe nozzle.
More information can be found in the Operating Instructions and in the Technical
Information document.
5.2.3 Safety distance
The device generates a warning or alarm if the level reaches the safety distance (SD). The SD
size can be set as required by the user in the Safety distance (015) function.
In the In safety dist. (016) function define how the device should react if the safety distance
is undershot.

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Options and meaning
•Warning
The measuring device displays an error message but keeps measuring.
•Alarm
The measuring device displays an error message.
The output signal in the Output on alarm (011) function displays the defined value.
As soon as the level drops below the safety distance, the device resumes measuring.
•Self holding
The measuring device responds in the same way as for an alarm.
However, the alarm condition is maintained even if the level drops below the safety
distance again.
The device only starts measuring again when the user cancels the alarm using the
Acknowledge alarm (017) function.
6 Electrical connection
6.1 Connecting requirements
LWARNING
Risk of explosion due to faulty connection.
‣Observe applicable national standards.
‣Comply with the specifications in the Safety Instructions (XA).
‣Check to ensure that the supply voltage matches the information on the nameplate.
‣The specified cable gland must be used.
‣Switch off the supply voltage before connecting.
‣Connect the potential equalization line to the outer ground terminal before applying the
supply voltage.
‣When connecting to the public mains, install a mains switch for the device such that it is
within easy reach of the device. Mark the switch as a disconnector for the device
(IEC/EN61010).

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6.2 Connecting the device
6.2.1 Connection in the F12 housing
1 → 2 → 3 →
A0038240 A0038241 A0038242
‣Unscrew the cover ‣Remove the display if one is fitted ‣Remove the cable from the
display
4 → 5 → 6 →
A0038243 A0038252 A0038253
‣Pull out the terminal module
slightly using the pull loop
‣Avoid moisture in the housing,
provide a loop to allow moisture
to drain off

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7 → 8 → 9
A0038254 A0038706 A0047499
‣Connect the cable shield to the
ground terminal in the
connection compartment
‣Tighten the cable gland
10. Close the connection compartment.
11. Switch on the power supply.
6.2.2 Connection in the T12 housing
1 → 2 → 3 →
1.
2.
A0038256 A0038257 A0038258
‣Unscrew the cover ‣Avoid moisture in the housing,
provide a loop to allow moisture
to drain off

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4 → 5
A0038711 A0047500
‣Connect the cable shield to the
ground terminal in the
connection compartment
‣Tighten the cable gland.
6. Close the housing.
7. Switch on the power supply.
6.3 Terminal assignment
2
4
3
1234
L- L+ I+ I-
1
A0019269
 8 Terminal assignment for two-wire version
1 Supply voltage
2 Test terminal to test the signal current
3 PAL (potential equalization)
4 4-20 mA HART
‣Connect the connecting line to the screw terminals in the connection compartment
(conductor cross-section 0.5 to 2.5 mm2, 20 to 14 AWG)

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‣A standard device cable suffices if only the analog signal should be used. Use a shielded
cable if working with a superimposed communication signal (HART).
Protective circuits against reverse polarity, RF influences and overvoltage peaks are
integrated in the device.
Operation via handheld terminal or PC with operating program: take minimum
communication resistance of 250 Ω and maximum load into consideration
• Superimposed communication signal (HART): use a shielded cable
• Analog signal: use a standard installation cable
• For other connections: use Commubox FXA291 or Field Xpert
6.4 Supply voltage
6.4.1 Two-wire version, HART
Terminal voltage directly at the device
Standard
• Current consumption 4 mA | terminal voltage 14 to 36 V
• Current consumption 20 mA | terminal voltage 8 to 36 V
Ex ia
• Current consumption 4 mA | terminal voltage 14 to 30 V
• Current consumption 20 mA | terminal voltage 8 to 30 V
Ex d
• Current consumption 4 mA | terminal voltage 14 to 30 V
• Current consumption 20 mA | terminal voltage 11 to 30 V
Fixed current, terminal voltage directly at the device
User-configurable, e.g. for solar powered operation (measured value via HART)
Standard
Current consumption 11 mA | terminal voltage 10 to 36 V
Ex ia
Current consumption 11 mA | terminal voltage 10 to 30 V
Fixed current for Multidrop mode
Standard
Current consumption 4 mA | (start-up current: 11 mA), terminal voltage 14 to 36 V
Ex ia
Current consumption 4 mA | (start-up current: 11 mA), terminal voltage 14 to 30 V

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6.5 Potential equalization
NOTICE
The housing is isolated from the tank by the plastic sensor. Because of this, interference
signals may occur if the potential equalization line is not properly connected.
‣Use a short potential equalization line for optimum electromagnetic compatibility.
‣Minimum line cross-section 2.5 mm2 (14 AWG).
Use a ground strap if interference can be expected due to the installation conditions
(existing interfering installations).
A0038292
 9 Position of outer ground terminal, example of F12 housing
• Connect the potential equalization line to the outer ground terminal of the transmitter
• In the case of hazardous area applications, only ground on the sensor side
• Comply with the specifications in the Safety Instructions
7 Operation options
7.1 Overview of operation options
• Local operation
• HART communication
Further information is available in the Operating Instructions.
7.2 Structure and function of the operating menu
7.2.1 Function codes
Within the function menus, a position is shown on the display for each function.

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The first two digits identify the function group, examples:
• Basic setup: 00
• Safety settings: 01
• Linearization: 04
The third digit refers to the individual functions within the function group, examples:
• Tank shape: 002
• Medium property: 003
• Process cond.: 004
7.3 Access to operating menu via local display
7.3.1 Display
Measured value display
• Label, e.g. measured value
• Symbol, e.g.
• Value and unit, e.g. 43.2 %
• Position in menu, e.g. 000
• Bar graph
The bar graph corresponds to the measured value. The bar graph is divided into 10 bars.
Each fully filled bar corresponds to 10% of the set span.
Group selection
Picklist of function groups, e.g. basic setup, safety settings, temperature
Function with free parameter
• Label, e.g. empty calibration
• Help text
• Position in menu, e.g. 005
Envelope curve display
Envelope curve, view
Symbols
ALARM_SYMBOL
Device is in the alarm condition.
If the symbol flashes, this indicates a warning.
LOCK_SYMBOL
Device is locked. No other entries are possible.
COM_SYMBOL
Data transfer in progress.
Button functions
 or 
• Navigate upwards in the picklist.
• Edit the numeric values within a function.

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 or 
• Navigate downwards in the picklist.
• Edit the numeric values within a function.
Simultaneously  
Navigate to the left within a function group.

• Navigate to the right within a function group.
• Confirm entry
Simultaneously   or  
Set the contrast of the LCD
Simultaneously   
Lock or unlock the hardware
Further information is available in the Operating Instructions.
7.4 Locking/unlocking parameter configuration
Further information is available in the Operating Instructions.
8 Commissioning
8.1 Switching on the device
After the supply voltage has been switched on, the device is first initialized. The following is
then displayed for approx. five seconds:
• Device type
• Software version
Parameters the device asks for the first time it is switched on:
•Language
Select the language of the display.
•Length unit
Select length unit for measuring distance
•Basic setup
Measured value is visible, which does not yet indicate the level in the tank
Perform basic setup
8.2 Connecting via FieldCare
This section describes commissioning using the local display.
Commissioning via FieldCare is the same as with the onsite display.