Endress+Hauser Levelflex FMP53 User manual

Products Solutions Services
Operating Instructions
Levelflex FMP53
FOUNDATION Fieldbus
Guided wave radar
BA01053F/00/EN/08.22-00
71603687
2022-12-13
01.01.zz (Device software)

Levelflex FMP53 FOUNDATION Fieldbus
2 Endress+Hauser
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

Levelflex FMP53 FOUNDATION Fieldbus Table of contents
Endress+Hauser 3
Table of contents
1 Important document information .... 6
1.1 Purpose of this document ................. 6
1.2 Symbols .............................. 6
1.2.1 Safety symbols .................. 6
1.2.2 Electrical symbols ................ 6
1.2.3 Tool symbols .................... 6
1.2.4 Symbols for certain types of
information and graphics ........... 7
1.3 Documentation ........................ 8
1.3.1 Technical Information (TI) ......... 8
1.3.2 Brief Operating Instructions (KA) ..... 8
1.3.3 Safety Instructions (XA) ............ 8
1.3.4 Functional Safety Manual (FY) ....... 8
1.4 Terms and abbreviations ................. 8
1.5 Registered trademarks ................... 9
2 Basic safety instructions ........... 11
2.1 Requirements for the personnel ........... 11
2.2 Intended use ......................... 11
2.3 Workplace safety ...................... 12
2.4 Operational safety ..................... 12
2.5 Product safety ........................ 12
2.5.1 CE mark ...................... 12
2.5.2 EAC conformity ................. 13
3 Product description ................ 14
3.1 Product design ........................ 14
3.1.1 Levelflex FMP53 ................ 14
3.1.2 Electronics housing .............. 15
4 Incoming acceptance and product
identification ..................... 16
4.1 Incoming acceptance ................... 16
4.2 Product identification ................... 16
4.2.1 Nameplate .................... 17
5 Storage, transport ................. 18
5.1 Storage temperature ................... 18
5.2 Transporting the product to the measuring
point ............................... 18
6 Mounting ......................... 19
6.1 Mounting requirements ................. 19
6.1.1 Suitable mounting position ........ 19
6.1.2 Mounting under confined conditions .21
6.1.3 Notes on the mechanical load of the
probe ........................ 23
6.1.4 Special installation situations ....... 24
6.2 Mounting the measuring device ........... 30
6.2.1 Tool list ...................... 30
6.2.2 Mounting the "Sensor, remote"
version ....................... 30
6.2.3 Turning the transmitter housing .... 31
6.2.4 Turning the display .............. 32
6.3 Post-installation check .................. 33
7 Electrical connection .............. 34
7.1 Connecting requirements ................ 34
7.1.1 Terminal assignment ............ 34
7.1.2 Cable specification ............... 36
7.1.3 Device plug .................... 36
7.1.4 Supply voltage .................. 37
7.1.5 Overvoltage protection ........... 37
7.2 Connecting the device .................. 38
7.2.1 Opening cover .................. 38
7.2.2 Connecting .................... 38
7.2.3 Plug-in spring-force terminals ...... 39
7.2.4 Closing the cover of the connection
compartment .................. 39
7.3 Post-connection check .................. 39
8 Operation methods ................ 41
8.1 Overview ............................ 41
8.1.1 Local operation ................. 41
8.1.2 Operation with remote display and
operating module FHX50 .......... 42
8.1.3 Remote operation ............... 42
8.2 Structure and function of the operating
menu .............................. 44
8.2.1 Structure of the operating menu .... 44
8.2.2 User roles and related access
authorization .................. 46
8.2.3 Data access - Security ............ 46
8.3 Display and operating module ............ 51
8.3.1 Display ....................... 51
8.3.2 Operating elements .............. 54
8.3.3 Entering numbers and text ........ 55
8.3.4 Opening the context menu ......... 56
8.3.5 Envelope curve display on the display
and operating module ............ 58
9 Integration into a FOUNDATION
Fieldbus network .................. 59
9.1 Device Description (DD) ................. 59
9.2 Integration into the FOUNDATION Fieldbus
network ............................ 59
9.3 Device identification and addressing ........ 59
9.4 Block model .......................... 60
9.4.1 Blocks of the device software ....... 60
9.4.2 Block configuration when device is
delivered ...................... 61
9.5 Assignment of the measured values
(CHANNEL) in an AI Block ............... 61

Table of contents Levelflex FMP53 FOUNDATION Fieldbus
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9.6 Index tables of Endress+Hauser parameters .. 62
9.6.1 Setup Transducer Block ........... 62
9.6.2 Advanced Setup Transducer Block ... 63
9.6.3 Display Transducer Block .......... 64
9.6.4 Diagnostic Transducer Block ....... 64
9.6.5 Expert Configuration Transducer
Block ........................ 65
9.6.6 Expert Information Transducer
Block ........................ 67
9.6.7 Service Sensor Transducer Block .... 68
9.6.8 Service Information Transducer
Block ........................ 68
9.6.9 Data Transfer Transducer Block ..... 69
9.7 Methods ............................ 70
10 Commissioning using the
Commissioning Wizard ............ 71
11 Commissioning via operating
menu ............................. 72
11.1 Function check ....................... 72
11.2 Setting the operating language ............ 72
11.3 Configuring level measurement ........... 73
11.4 Recording the reference envelope curve ..... 75
11.5 Configuring the local display ............. 76
11.5.1 Factory setting of local display for
level measurements ............. 76
11.5.2 Adjusting the local display ......... 76
11.6 Configuration management .............. 77
11.7 Protecting settings from unauthorized access .78
12 Commissioning (block-oriented
operation) ........................ 79
12.1 Function check ....................... 79
12.2 Block configuration .................... 79
12.2.1 Preparatory steps ............... 79
12.2.2 Configuring the Resource Block ..... 79
12.2.3 Configuring the Transducer Blocks ... 79
12.2.4 Configuring the Analog Input Blocks .80
12.2.5 Additional configuration .......... 80
12.3 Scaling the measured value in the AI Block ... 80
12.4 Selecting the language .................. 81
12.5 Configuring level measurement ........... 82
12.6 Configuring the local display ............. 83
12.6.1 Factory setting of local display for
level measurements ............. 83
12.7 Configuration management .............. 83
12.8 Configuring event behavior according to
FOUNDATION Fieldbus specification FF912 .. 85
12.8.1 Event groups ................... 86
12.8.2 Assignment parameters .......... 88
12.8.3 Configurable area ............... 91
12.8.4 Transmission of event messages over
the bus ....................... 92
12.9 Protecting settings from unauthorized access .92
13 Diagnostics and troubleshooting ... 93
13.1 General troubleshooting ................. 93
13.1.1 General errors .................. 93
13.1.2 Parametrization errors ........... 94
13.2 Diagnostic information on local display ...... 95
13.2.1 Diagnostic message .............. 95
13.2.2 Calling up remedial measures ...... 97
13.3 Diagnostic event in the operating tool ....... 98
13.4 Diagnostic messages in the DIAGNOSTIC
Transducer Block (TRDDIAG) ............. 99
13.5 Diagnostic list ........................ 99
13.6 Event logbook ....................... 100
13.6.1 Event history .................. 100
13.6.2 Filtering the event logbook ....... 100
13.6.3 Overview of information events .... 100
13.7 Firmware history ..................... 102
14 Maintenance .................... 103
14.1 Exterior cleaning ..................... 103
14.2 General cleaning instructions ............ 103
14.3 Cleaning the probe .................... 103
14.3.1 Cleaning the probe in the vessel .... 103
14.3.2 Cleaning the probe outside the
vessel ....................... 104
15 Repair ........................... 105
15.1 General information .................. 105
15.1.1 Repair concept ................ 105
15.1.2 Repair of Ex-certified devices ...... 105
15.1.3 Replacing electronics modules ..... 105
15.1.4 Replacing a device .............. 105
15.2 Spare parts ......................... 106
15.3 Return ............................. 106
15.4 Disposal ........................... 106
16 Accessories ...................... 107
16.1 Device-specific accessories .............. 107
16.1.1 Weather protection cover ........ 107
16.1.2 Mounting bracket for electronics
housing ..................... 108
16.1.3 Weld-in adapter ............... 108
16.1.4 Protective cover ................ 109
16.1.5 Calibration kit ................. 109
16.1.6 Remote display FHX50 .......... 109
16.1.7 Overvoltage protection .......... 110
16.1.8 Bluetooth module BT10 for HART
devices ...................... 111
16.2 Communication-specific accessories ....... 112
16.3 Service-specific accessories .............. 112
16.4 System components ................... 112
17 Operating menu .................. 113
17.1 Overview of the operating menu (display
module) ........................... 113
17.2 Overview of the operating menu (operating
tool) .............................. 120

Levelflex FMP53 FOUNDATION Fieldbus Table of contents
Endress+Hauser 5
17.3 "Setup" menu ........................ 126
17.3.1 "Mapping" wizard ............... 133
17.3.2 "Analog input 1 to 5" submenu ..... 134
17.3.3 "Advanced setup" submenu ........ 136
17.4 "Diagnostics" menu .................... 177
17.4.1 "Diagnostic list" submenu ......... 179
17.4.2 "Event logbook" submenu ......... 180
17.4.3 "Device information" submenu ..... 181
17.4.4 "Measured values" submenu ....... 183
17.4.5 "Analog input 1 to 5" submenu ..... 184
17.4.6 "Data logging" submenu .......... 186
17.4.7 "Simulation" submenu ........... 189
17.4.8 "Device check" submenu .......... 194
17.4.9 "Heartbeat" submenu ............ 196
Index ................................. 197

Important document information Levelflex FMP53 FOUNDATION Fieldbus
6 Endress+Hauser
1 Important document information
1.1 Purpose of this document
These Operating Instructions contain all the information that is required in the various
phases of the life cycle of the device: from product identification, incoming acceptance and
storage, to mounting, connection, operation and commissioning through to
troubleshooting, maintenance and disposal.
1.2 Symbols
1.2.1 Safety symbols
DANGER
This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in
serious or fatal injury.
WARNING
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.
1.2.2 Electrical symbols
Alternating current
Direct current and alternating current
Direct 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 interior and exterior of the device:
• Interior ground terminal: protective earth is connected to the mains supply.
• Exterior ground terminal: device is connected to the plant grounding system.
1.2.3 Tool symbols
Phillips head screwdriver

Levelflex FMP53 FOUNDATION Fieldbus Important document information
Endress+Hauser 7
Flat blade screwdriver
Torx screwdriver
Allen key
Open-ended wrench
1.2.4 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
Notice or individual step to be observed
1.
,
2.
,
3.
Series of steps
Result of a step
Visual inspection
Operation via operating tool
Write-protected parameter
1, 2, 3, ...
Item numbers
A, B, C, ...
Views
Safety instructions
Observe the safety instructions contained in the associated Operating Instructions
Temperature resistance of the connection cables
Specifies the minimum value of the temperature resistance of the connection cables

Important document information Levelflex FMP53 FOUNDATION Fieldbus
8 Endress+Hauser
1.3 Documentation
The following types of documentation are available in the Download Area of the Endress
+Hauser website (www.endress.com/downloads):
For an overview of the scope of the associated Technical Documentation, refer to the
following:
•Device Viewer (www.endress.com/deviceviewer): Enter the serial number from the
nameplate
•Endress+Hauser Operations app: Enter serial number from nameplate or scan
matrix code on nameplate.
1.3.1 Technical Information (TI)
Planning aid
The document contains all the technical data on the device and provides an overview of
the accessories and other products that can be ordered for the device.
1.3.2 Brief Operating Instructions (KA)
Guide that takes you quickly to the 1st measured value
The Brief Operating Instructions contain all the essential information from incoming
acceptance to initial commissioning.
1.3.3 Safety Instructions (XA)
Depending on the approval, the following Safety Instructions (XA) are supplied with the
device. They are an integral part of the Operating Instructions.
The nameplate indicates the Safety Instructions (XA) that are relevant to the device.
1.3.4 Functional Safety Manual (FY)
Depending on the SIL approval, the Functional Safety Manual (FY) is an integral part of
the Operating Instructions and applies in addition to the Operating Instructions, Technical
Information and ATEX Safety Instructions.
The different requirements that apply for the protective function are described in the
Functional Safety Manual (FY).
1.4 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
Maximum working pressure
The MWP is indicated on the nameplate.

Levelflex FMP53 FOUNDATION Fieldbus Important document information
Endress+Hauser 9
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
PLC
Programmable logic controller (PLC)
CDI
Common Data Interface
Operating tool
The term "operating tool" is used in place of the following operating software:
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)
CDI
Common Data Interface
PFS
Pulse Frequency Status (Switch output)
MBP
Manchester Bus Powered
PDU
Protocol Data Unit
1.5 Registered trademarks
FOUNDATION™ Fieldbus
Registration-pending trademark of the FieldComm Group, Austin, Texas, USA
Bluetooth®
The Bluetooth® word mark and logos are registered trademarks owned by the Bluetooth
SIG, Inc. and any use of such marks by Endress+Hauser is under license. Other trademarks
and trade names are those of their respective owners.
Apple®
Apple, the Apple logo, iPhone, and iPod touch are trademarks of Apple Inc., registered in
the U.S. and other countries. App Store is a service mark of Apple Inc.
Android®
Android, Google Play and the Google Play logo are trademarks of Google Inc.
KALREZ®, VITON®
Registered trademarks of DuPont Performance Elastomers L.L.C., Wilmington, DE USA
TEFLON®
Registered trademark of E.I. DuPont de Nemours & Co., Wilmington, USA

Important document information Levelflex FMP53 FOUNDATION Fieldbus
10 Endress+Hauser
TRI-CLAMP®
Registered trademark of Ladish & Co., Inc., Kenosha, USA

Levelflex FMP53 FOUNDATION Fieldbus Basic safety instructions
Endress+Hauser 11
2 Basic safety instructions
2.1 Requirements for the personnel
The personnel for installation, commissioning, diagnostics and maintenance must fulfill
the following requirements:
‣Trained, qualified specialists must have a relevant qualification for this specific function
and task.
‣Are authorized by the plant owner/operator.
‣Are familiar with federal/national regulations.
‣Before starting work, read and understand the instructions in the manual and
supplementary documentation as well as the certificates (depending on the
application).
‣Follow instructions and comply with basic conditions.
The operating personnel must fulfill the following requirements:
‣Are instructed and authorized according to the requirements of the task by the facility's
owner-operator.
‣Follow the instructions in this manual.
2.2 Intended use
Application and media
The measuring device described in this manual is intended only for the level measurement
of liquids. Depending on the version ordered, the measuring device can also measure
potentially explosive, flammable, poisonous and oxidizing media.
If the limit values specified in the "Technical data" and the conditions listed in the
instructions and additional documentation are observed, the measuring device may be
used for the following measurements only:
‣Measured process variables: level
‣Calculable process variables: volume or mass in any shape of vessel (calculated from the
level by the linearization functionality)
To ensure that the measuring device remains in proper condition for the operation time:
‣Use the measuring device only for media to which the process-wetted materials have
an adequate level of resistance.
‣Observe the limit values in the "Technical data".
Incorrect use
The manufacturer is not liable for damage caused by improper or non-intended use.
Clarification of borderline cases:
‣For special fluids and fluids for cleaning, Endress+Hauser is glad to provide assistance
in verifying the corrosion resistance of fluid-wetted materials, but does not accept any
warranty or liability.
Residual risks
Due to heat transfer from the process as well as power loss in the electronics, the
temperature of the electronics housing and the assemblies contained therein (e.g. display
module, main electronics module and I/O electronics module) may rise up to 80 °C (176
°F). When in operation, the sensor may reach a temperature close to the medium
temperature.
Danger of burns from contact with surfaces!
‣In the event of high medium temperatures, ensure protection against contact to
prevent burns.

Basic safety instructions Levelflex FMP53 FOUNDATION Fieldbus
12 Endress+Hauser
2.3 Workplace safety
When working on and with the device:
‣Wear the required protective equipment according to federal or national regulations.
With separable probe rods, medium may penetrate the joints between the individual parts
of the rod. This medium may escape when the joints are loosened. This can cause injuries
in the case of dangerous (e.g., aggressive or toxic) media.
‣When loosening the joints between the individual parts of the probe rod, wear
appropriate protective equipment according to the medium.
2.4 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 interference-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 the manufacturer.
Repair
To ensure continued operational safety and reliability:
‣Carry out repairs on the device only if they are expressly permitted.
‣Observe federal/national regulations pertaining to the repair of an electrical device.
‣Use only original spare parts and accessories from the manufacturer.
Hazardous area
To eliminate danger to persons or the installation when the device is used in the
hazardous area (e.g. explosion protection, pressure vessel safety):
‣Check the nameplate to verify whether the ordered device can be put to its intended
use in the hazardous area.
‣Observe the specifications in the separate supplementary documentation, which is an
integral part of this manual.
2.5 Product safety
This measuring device is designed in accordance with good engineering practice to meet
state-of-the-art safety requirements, has been tested, and left the factory in a condition in
which it is safe to operate. It meets the general safety standards and legal requirements.
NOTICE
Loss of degree of protection by opening of the device in humid environments
‣If the device is opened in a humid environment, the degree of protection indicated on
the nameplate is no longer valid. This may also impair the safe operation of the device.
2.5.1 CE mark
The measuring system meets the legal requirements of the applicable EU directives. These
are listed in the corresponding EU Declaration of Conformity together with the standards
applied.
The manufacturer confirms successful testing of the device by affixing to it the CE mark.

Levelflex FMP53 FOUNDATION Fieldbus Basic safety instructions
Endress+Hauser 13
2.5.2 EAC conformity
The measuring system meets the legal requirements of the applicable EAC guidelines.
These are listed in the corresponding EAC Declaration of Conformity along with the
standards applied.
The manufacturer confirms successful testing of the device by affixing to it the EAC mark.

Product description Levelflex FMP53 FOUNDATION Fieldbus
14 Endress+Hauser
3 Product description
3.1 Product design
3.1.1 Levelflex FMP53
1
2
3
A0013421
 1 Design of the Levelflex
1 Electronics housing
2 Process connection
3 Rod probe

Levelflex FMP53 FOUNDATION Fieldbus Product description
Endress+Hauser 15
3.1.2 Electronics housing
1
2
3
4
6
7
8
5
9
A0012422
 2 Design of the electronics housing
1 Electronics compartment cover
2 Display module
3 Main electronics module
4 Cable glands (1 or 2, depending on instrument version)
5 Nameplate
6 I/O electronics module
7 Terminals (pluggable spring terminals)
8 Connection compartment cover
9 Grounding terminal

Incoming acceptance and product identification Levelflex FMP53 FOUNDATION Fieldbus
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4 Incoming acceptance and product
identification
4.1 Incoming acceptance
Check the following during incoming 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 required (see nameplate): are the Safety Instructions (XA) provided?
If one of these conditions is not met, please contact your Endress+Hauser sales office.
4.2 Product identification
The following options are available for the identification of the measuring device:
• Nameplate specifications
• Order code with breakdown of the device features on the delivery note
• Enter the serial number from the nameplate in W@M Device Viewer
(www.endress.com/deviceviewer): all the information about the device is displayed.
• Enter the serial number on the nameplate into the Endress+Hauser Operations App or
scan the 2-D matrix code (QR code) on the nameplate with the Endress+Hauser
Operations App: all the information about the measuring device is displayed.

Levelflex FMP53 FOUNDATION Fieldbus Incoming acceptance and product identification
Endress+Hauser 17
4.2.1 Nameplate
20
21
22
24
25
23
26
12
3
4
5
6
7
8
9
10
19
18
17
16
15
14
Ext. ord. cd.:
Order code:
Ser. no.:
LN =
Lref =
Mat.:
Date:
FW: Dev.Rev.:
DeviceID:
Ta:
if modification
see sep. label
X =
MWP:
12
11
47 (1.85)
92 (3.62)
13
A0010725
 3 Nameplate of the Levelflex; engineering unit: mm (in)
1 Device name
2 Manufacturer address
3 Order code
4 Serial number (Ser. no.)
5 Extended order code (Ext. ord. cd.)
6 Process pressure
7 Gas phase compensation: reference length
8 Certificate symbol
9 Certificate- and approval-related data
10 Degree of protection: e.g. IP, NEMA
11 Document number of the Safety Instructions: e.g. XA, ZD, ZE
12 2-D matrix code (QR code)
13 Modification mark
14 Manufacturing date: year-month
15 Permitted temperature range for cable
16 Device revision (Dev.Rev.)
17 Additional information about the device version (certificates, approvals, communication protocol): e.g. SIL,
PROFIBUS
18 Firmware version (FW)
19 CE mark, C-Tick
20 DeviceID
21 Materials in contact with process
22 Permitted ambient temperature (Ta)
23 Size of the cable gland thread
24 Probe length
25 Signal outputs
26 Supply voltage
Up to 33 characters of the extended order code are indicated on the nameplate. If the
extended order code contains additional characters, these cannot be displayed.
However, the complete extended order code can also be displayed via the device
operating menu: Extended order code 1 to 3 parameter

Storage, transport Levelflex FMP53 FOUNDATION Fieldbus
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5 Storage, transport
5.1 Storage temperature
• Permitted storage temperature: –40 to +80 °C (–40 to +176 °F)
• Use original packaging.
5.2 Transporting the product to the measuring point
LWARNING
Housing or rod may become damaged or pull off.
Danger of injury!
‣Transport the measuring device to the measuring point in its original packaging or by
the process connection.
‣Always secure lifting equipment (slings, eyes, etc.) at the process connection and never
lift the device by the electronic housing or probe. Pay attention to the center of gravity
of the device so that it does not tilt or slip unintentionally.
‣Follow the safety instructions and transport conditions for devices weighing more than
18 kg (39.6 lbs) (IEC 61010).
A0014267

Levelflex FMP53 FOUNDATION Fieldbus Mounting
Endress+Hauser 19
6 Mounting
6.1 Mounting requirements
6.1.1 Suitable mounting position
A
1 2
C
B
3
A0014130
 4 Installation conditions for Levelflex
Spacing requirements when mounting
• Distance (A) between the vessel wall and rod probes:
• For smooth metallic walls: > 50 mm (2 in)
• For plastic walls: > 300 mm (12 in) to metallic parts outside the vessel
• Distance (B) between rod probes and internal fittings (4): > 300 mm (12 in)
• When using more than one Levelflex:
Minimum distance between the sensor axes: 100 mm (3.94 in)
• Distance (C) from the end of the probe to the bottom of the vessel: > 10 mm (0.4 in)

Mounting Levelflex FMP53 FOUNDATION Fieldbus
20 Endress+Hauser
Additional conditions
• When mounting outdoors, a weather protection cover (1) can be used to protect the
device against extreme weather conditions.
• Do not mount the probe in the filling curtain (2).
When the housing is mounted in a recess (e.g. in a concrete ceiling), observe a
minimum distance of 100 mm (4 in) between the cover of the connection
compartment/electronics compartment and the wall. Otherwise the connection
compartment/electronics compartment will not be accessible after installation.