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
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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.

Incoming acceptance and product identification Prosonic M FMU41 HART
6 Endress+Hauser
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).

Prosonic M FMU41 HART Mounting
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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

Mounting Prosonic M FMU41 HART
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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).