Endress+Hauser Proline Promag L 400 HART User manual

Operating Instructions
Proline Promag L 400
HART
Electromagnetic flow measuring system
BA01062D/06/EN/01.12
71183770
Valid as of version
01.00.zz (Device firmware)

Proline Promag L 400 HART
2 Endress+Hauser
• Make sure the document is stored in a safe place such that it is always available when working
on or with the device.
• To avoid danger to individuals or the facility, read the "Basic safety instructions" section carefully,
as well as all other safety instructions in the document that are specific to working procedures.
• The manufacturer reserves the right to modify technical data without prior notice. Your Endress
+Hauser Sales Center will supply you with current information and updates to these Instructions.

Proline Promag L 400 HART Table of contents
Endress+Hauser 3
Table of contents
1 Document information ............... 5
1.1 Document function ....................... 5
1.2 Symbols used ........................... 5
1.2.1 Safety symbols .................... 5
1.2.2 Electrical symbols .................. 5
1.2.3 Tool symbols ..................... 5
1.2.4 Symbols for certain types of information ... 6
1.2.5 Symbols in graphics ................. 6
1.3 Documentation ......................... 6
1.3.1 Standard documentation .............. 7
1.3.2 Supplementary device-dependent
documentation .................... 7
2 Basic safety instructions .............. 8
2.1 Requirements for the personnel .............. 8
2.2 Designated use .......................... 8
2.3 Workplace safety ........................ 9
2.4 Operational safety ........................ 9
2.5 Product safety .......................... 9
3 Product description ................ 10
3.1 Product design ......................... 10
3.2 Registered trademarks .................... 11
4 Incoming acceptance and product
identification ...................... 12
4.1 Incoming acceptance ..................... 12
4.2 Product identification .................... 13
4.2.1 Transmitter nameplate .............. 13
4.2.2 Sensor nameplate ................. 14
4.2.3 Symbols on measuring device ......... 15
5 Storage and transport ............... 16
5.1 Storage conditions ...................... 16
5.2 Transporting the product .................. 16
5.2.1 For measuring devices £ DN 300 (12") ... 16
5.2.2 For measuring devices ³ DN 350 (14") ... 16
5.3 Packaging disposal ...................... 17
6 Installation ........................ 18
6.1 Installation conditions .................... 18
6.1.1 Mounting position ................. 18
6.1.2 Requirements from environment and
process ......................... 21
6.1.3 Special mounting instructions ......... 22
6.2 Mounting the measuring device ............. 22
6.2.1 Required tools .................... 22
6.2.2 Preparing the measuring device ........ 23
6.2.3 Mounting the sensor ............... 23
6.2.4 Mounting the transmitter of the remote
version ......................... 26
6.2.5 Turning the transmitter housing ....... 28
6.3 Post-installation check .................... 30
7 Electrical connection ............... 31
7.1 Connection conditions ................... 31
7.1.1 Required tools .................... 31
7.1.2 Requirements for connecting cable ...... 31
7.1.3 Terminal assignment ............... 33
7.1.4 Preparing the measuring device ........ 34
7.1.5 Preparing the connecting cable for the
remote version ................... 35
7.2 Connecting the measuring device ............ 36
7.2.1 Connecting the transmitter ........... 36
7.2.2 Connecting the remote version ........ 37
7.2.3 Ensuring potential equalization ........ 38
7.3 Ensuring the degree of protection ............ 40
7.4 Post-connection check ................... 41
8 Operation options .................. 42
8.1 Overview of operation options .............. 42
8.2 Structure and function of the operating menu .... 43
8.2.1 Structure of the operating menu ....... 43
8.2.2 Operating philosophy ............... 44
8.3 Access to the operating menu via the local
display .............................. 45
8.3.1 Operational display ................ 45
8.3.2 Navigation view .................. 46
8.3.3 Editing view ..................... 48
8.3.4 Operating elements ................ 50
8.3.5 Opening the context menu ........... 50
8.3.6 Navigating and selecting from list ....... 52
8.3.7 Calling the parameter directly ......... 52
8.3.8 Calling up help text ................ 53
8.3.9 Changing the parameters ............ 54
8.3.10 User roles and related access
authorization .................... 55
8.3.11 Disabling write protection via access
code .......................... 55
8.3.12 Enabling and disabling the keypad lock ... 55
8.4 Access to the operating menu via the Web
browser .............................. 56
8.4.1 Function range ................... 56
8.4.2 Prerequisites ..................... 56
8.4.3 Establishing a connection ............ 57
8.4.4 Logging on ...................... 57
8.4.5 User interface .................... 58
8.4.6 Disabling the Web server ............ 59
8.4.7 Logging out ..................... 59
8.5 Access to the operating menu via the operating
tool ................................ 60
8.5.1 Connecting the operating tool ......... 60
8.5.2 Field Xpert SFX100 ................ 61
8.5.3 FieldCare ....................... 61
8.5.4 AMS Device Manager .............. 62

Table of contents Proline Promag L 400 HART
4 Endress+Hauser
8.5.5 SIMATIC PDM ................... 62
8.5.6 Field Communicator 475 ............ 63
9 System integration ................. 64
9.1 Overview of device description files .......... 64
9.1.1 Current version data for the device ..... 64
9.1.2 Operating tools ................... 64
9.2 Measured variables via HART protocol ......... 64
9.3 Other settings ......................... 65
10 Commissioning .................... 66
10.1 Function check ........................ 66
10.2 Switching on the measuring device ........... 66
10.3 Setting the operating language .............. 66
10.4 Configuring the measuring device ............ 67
10.4.1 Configuring the status input .......... 67
10.4.2 Configuring the current output ........ 69
10.4.3 Configuring the pulse/frequency/switch
output ......................... 70
10.4.4 Configuring the local display .......... 78
10.4.5 Configuring the output conditioning ..... 79
10.4.6 Configuring the low flow cut off ....... 81
10.4.7 Configuring empty pipe detection ...... 83
10.5 Advanced settings ....................... 85
10.5.1 Defining the tag name .............. 86
10.5.2 Setting the system units ............. 86
10.5.3 Carrying out a sensor adjustment ....... 87
10.5.4 Performing electrode cleaning ......... 88
10.5.5 Configuring the totalizer ............. 89
10.5.6 Carrying out additional display
configurations .................... 91
10.6 Simulation ............................ 92
10.7 Protecting settings from unauthorized access .... 94
10.7.1 Write protection via access code ....... 95
10.7.2 Write protection via write protection
switch ......................... 96
11 Operation ......................... 98
11.1 Read device locking status ................. 98
11.2 Adjusting the operating language ............ 98
11.3 Configuring the display ................... 98
11.4 Reading the measured values ............... 98
11.4.1 Process variables .................. 98
11.4.2 Totalizer ........................ 99
11.4.3 Input values ..................... 99
11.4.4 Output values ................... 100
11.5 Adapting the measuring device to the process
conditions ........................... 101
11.6 Performing a totalizer reset ............... 101
11.7 Showing data logging ................... 102
12 Diagnostics and troubleshooting .... 104
12.1 General troubleshooting ................. 104
12.2 Diagnostic information on local display ....... 106
12.2.1 Diagnostic message ............... 106
12.2.2 Calling up remedy information ....... 108
12.3 Diagnostic information in the Web browser .... 109
12.3.1 Diagnostic options ................ 109
12.3.2 Calling up remedy information ....... 109
12.4 Diagnostic information in FieldCare .......... 110
12.4.1 Diagnostic options ................ 110
12.4.2 Calling up remedy information ....... 110
12.5 Adapting the diagnostic information ......... 110
12.5.1 Adapting the diagnostic behavior ...... 110
12.6 Overview of diagnostic information ......... 111
12.7 Pending diagnostic events ................ 113
12.8 Diagnostic list ......................... 114
12.9 Event logbook ........................ 114
12.9.1 Event history .................... 114
12.9.2 Filtering the event logbook .......... 115
12.9.3 Overview of information events ....... 115
12.10 Resetting the measuring device ............. 116
12.11 Device information ..................... 116
12.12 Disposal ............................ 118
12.12.1Removing the measuring device ....... 118
12.12.2Disposing of the measuring device ..... 118
13 Repair ........................... 119
13.1 General notes ......................... 119
13.2 Spare parts ........................... 119
13.3 Endress+Hauser services ................. 119
14 Maintenance ..................... 120
14.1 Maintenance tasks ..................... 120
14.1.1 Exterior cleaning ................. 120
14.1.2 Interior cleaning ................. 120
14.2 Measuring and test equipment ............. 120
14.3 Endress+Hauser services ................. 120
15 Return ........................... 121
16 Technical data .................... 122
16.1 Application .......................... 122
16.2 Function and system design ............... 122
16.3 Input .............................. 122
16.4 Output ............................. 125
16.5 Power supply ......................... 127
16.6 Performance characteristics ............... 129
16.7 Installation ........................... 130
16.8 Environment ......................... 130
16.9 Process ............................. 131
16.10 Mechanical construction ................. 132
16.11 Operability ........................... 141
16.12 Certificates and approvals ................ 141
16.13 Application packages .................... 142
16.14 Accessories .......................... 142
17 Appendix ........................ 143
17.1 Overview of the operating menu ............ 143
Index ................................. 160

Proline Promag L 400 HART Document information
Endress+Hauser 5
1 Document information
1.1 Document function
These Operating Instructions contain all the information that is required in 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 used
1.2.1 Safety symbols
Symbol Meaning
DANGER
A0011189-EN
DANGER!
This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in serious
or fatal injury.
WARNING
A0011190-EN
WARNING!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in serious
or fatal injury.
CAUTION
A0011191-EN
CAUTION!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in minor or
medium injury.
NOTICE
A0011192-EN
NOTICE!
This symbol contains information on procedures and other facts which do not result in personal injury.
1.2.2 Electrical symbols
Symbol Meaning
A0011197
Direct current
A terminal to which DC voltage is applied or through which direct current flows.
A0011198
Alternating current
A terminal to which alternating voltage is applied or through which alternating current flows.
A0017381
Direct current and alternating current
• A terminal to which alternating voltage or DC voltage is applied.
• A terminal through which alternating current or direct current flows.
)
A0011200
Ground connection
A grounded terminal which, as far as the operator is concerned, is grounded via a grounding system.
*
A0011199
Protective ground connection
A terminal which must be connected to ground prior to establishing any other connections.
A0011201
Equipotential connection
A connection that has to be connected to the plant grounding system: This may be a potential equalization
line or a star grounding system depending on national or company codes of practice.
1.2.3 Tool symbols
Symbol Meaning
A0013442
Torx screwdriver
A0011219
Phillips head screwdriver

Document information Proline Promag L 400 HART
6 Endress+Hauser
A0011222
Open-ended wrench
1.2.4 Symbols for certain types of information
Symbol Meaning
A0011182
Allowed
Indicates procedures, processes or actions that are allowed.
A0011183
Preferred
Indicates procedures, processes or actions that are preferred.
A0011184
Forbidden
Indicates procedures, processes or actions that are forbidden.
A0011193
Tip
Indicates additional information.
A0011194
Reference to documentation
Refers to the corresponding device documentation.
A0011195
Reference to page
Refers to the corresponding page number.
A0011196
Reference to graphic
Refers to the corresponding graphic number and page number.
,… ,
Series of steps
ÃResult of a sequence of actions
A0013562
Help in the event of a problem
1.2.5 Symbols in graphics
Symbol Meaning
1, 2, 3,... Item numbers
,… ,
Series of steps
A, B, C, ... Views
A-A, B-B, C-C, ... Sections
A0013441
Flow direction
-
A0011187
Hazardous area
Indicates a hazardous area.
.
A0011188
Safe area (non-hazardous area)
Indicates a non-hazardous area.
1.3 Documentation
The following document types are available:
• On the CD-ROM supplied with the device
•In the Download Area of the Endress+Hauser Internet site: www.endress.com ® Download
For a detailed list of the individual documents along with the documentation code

Proline Promag L 400 HART Document information
Endress+Hauser 7
1.3.1 Standard documentation
Document type Purpose and content of the document
Technical Information Planning aid for your device
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.
Brief Operating Instructions 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.
1.3.2 Supplementary device-dependent documentation
Additional documents are supplied depending on the device version ordered: Always comply strictly
with the instructions in the supplementary documentation. The supplementary documentation is
an integral part of the device documentation.

Basic safety instructions Proline Promag L 400 HART
8 Endress+Hauser
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 beginning work, the specialist staff must have read and understood the instructions in the
Operating Instructions and supplementary documentation as well as in the certificates
(depending on the application)
►Following instructions and basic conditions
The operating personnel must fulfill the following requirements:
►Being instructed and authorized according to the requirements of the task by the facility's owner-
operator
►Following the instructions in these Operating Instructions
2.2 Designated use
Application and media
The measuring device described in these Instructions is intended only for flow measurement of
liquids with a minimum conductivity of 5 mS/cm. In the case of demineralized water, a minimum
conductivity of 20 mS/cm is required.
Depending on the version ordered, the measuring device can also measure potentially explosive,
flammable, poisonous and oxidizing media.
To ensure that the measuring device remains in proper condition for the operation time:
►Only use the measuring device in full compliance with the data on the nameplate and the general
conditions listed in the Operating Instructions and supplementary documentation.
►Based on the nameplate, check whether the ordered device is permitted for the intended use in
the hazardous area (e.g. explosion protection, pressure vessel safety).
►Use the measuring device only for media against which the process-wetted materials are
adequately resistant.
Incorrect use
Non-designated use can compromise safety. The manufacturer is not liable for damage caused by
improper or non-designated use.
!WARNING
Danger of breakage of the sensor due to corrosive or abrasive fluids!
►Verify the compatibility of the process fluid with the sensor material.
►Ensure the resistance of all fluid-wetted materials in the process.
►Observe the specified maximum process pressure.
Verification for 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
as minute changes in the temperature, concentration or level of contamination in the process
can alter the corrosion resistance properties.
Residual risks
The external surface temperature of the housing can increase by max. 10 K due to the power
consumption of the electronic components. Hot process fluids passing through the measuring device
will further increase the surface temperature of the housing. The surface of the sensor, in particular,
can reach temperatures which are close to the fluid temperature.

Proline Promag L 400 HART Basic safety instructions
Endress+Hauser 9
Possible burn hazard due to fluid temperatures!
►For elevated fluid temperature, ensure protection against contact to prevent burns.
2.3 Workplace safety
For work on and with the device:
►Wear the required personal protective equipment according to federal/national regulations.
For welding work on the piping:
►Do not ground the welding unit via the measuring device.
2.4 Operational safety
Risk of injury.
►Operate the device in proper technical condition and fail-safe condition only.
►The operator is responsible for interference-free operation of the device.
Conversions to the device
Unauthorized modifications to the device are not permitted and can lead to unforeseeable dangers.
►If, despite this, modifications are required, consult with Endress+Hauser.
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 repair of an electrical device.
►Use original spare parts and accessories from Endress+Hauser only.
Environmental requirements
If a plastic transmitter housing is permanently exposed to certain steam and air mixtures, this can
damage the housing.
►If you are unsure, please contact your Endress+Hauser Sales Center for clarification.
►If used in an approval-related area, observe the information on the nameplate.
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 they are
safe to operate.
It meets general safety standards and legal requirements. It also complies with the EC directives
listed in the device-specific EC Declaration of Conformity. Endress+Hauser confirms this by affixing
the CE mark to the device.

Product description Proline Promag L 400 HART
10 Endress+Hauser
3 Product description
3.1 Product design
2
4
5
6
7
8
1
E
SC
3
A0017218
å 1 Important components of the compact version
1Display module
2 Electronics cover
3 HistoROM DAT (plug-in memory)
4 Main electronics module
5 Terminals (screw terminals, some available as plug-in terminals)
6 Transmitter housing, compact version
7 Cable glands
8 Sensor, compact version

Proline Promag L 400 HART Product description
Endress+Hauser 11
E
ESC
1
4
5
6
2
8
7
9
10
11
3
A0017225
å 2 Important components of the remote version
1Display module
2 Electronics cover
3 HistoROM DAT (plug-in memory)
4 Transmitter housing, remote version
5 Cable glands
6 Main electronics module
7 Terminals (screw terminals, some available as plug-in terminals)
8 Sensor housing cover
9 Sensor connection module (screw terminals)
10 Sensor connection housing
11 Sensor, remote version
3.2 Registered trademarks
HARTÒ
Registered trademark of the HART Communication Foundation, Austin, USA
MicrosoftÒ
Registered trademark of the Microsoft Corporation, Redmond, Washington, USA
ApplicatorÒ, FieldCareÒ, Field XpertTM, HistoROMÒ
Registered or registration-pending trademarks of the Endress+Hauser Group

Incoming acceptance and product identification Proline Promag L 400 HART
12 Endress+Hauser
4 Incoming acceptance and product identification
4.1 Incoming acceptance
A0015502
1
+
2
1
+
2
A0013843
Is the order code on the delivery note (1) identical to the order code on the product sticker (2)?
A0013695
A0015502
A0013698
Are the goods undamaged?
A0015502
A0013699
Do the nameplate data match the ordering information on the delivery note?
A0015502
A0013697
Is the CD-ROM with the Technical Documentation and documents present?
If one of the conditions is not satisfied, contact your Endress+Hauser Sales Center.

Proline Promag L 400 HART Incoming acceptance and product identification
Endress+Hauser 13
4.2 Product identification
The following options are available for identification of the measuring device:
• Nameplate specifications
• Order code with breakdown of the device features on the delivery note
•Enter serial numbers from nameplates in W@M Device Viewer
(www.endress.com/deviceviewer): All information about the measuring device is displayed.
For an overview of the scope of the Technical Documentation provided, refer to the following:
•The "Additional standard documentation on the device" (® ä 7) and "Supplementary device-
dependent documentation" (® ä 7) sections
•The W@M Device Viewer: Enter the serial number from the nameplate
(www.endress.com/deviceviewer)
4.2.1 Transmitter nameplate
Order code:
i
Ext. ord. cd.:
Ser. no.:
Patents
i
Date:
1
2
3 4 5 6 7
8
9
10
111213
A0017346
å 3 Example of a transmitter nameplate
1Manufacturing location
2 Name of the transmitter
3 Order code
4 Serial number
5 Extended order code
6 Permitted ambient temperature range (Ta)
7 Firmware version (FW) and device revision (Dev.Rev.) from the factory
8 Degree of protection
9 Permitted temperature range for cable
10 2-D matrix code
11 Manufacturing date: year-month
12 CE mark, C-Tick
13 Electrical connection data, e.g. available inputs and outputs, supply voltage

Incoming acceptance and product identification Proline Promag L 400 HART
14 Endress+Hauser
4.2.2 Sensor nameplate
i
Patents
i
Material:
Tm:
Ext. ord. cd.:
Order Code:
Ser.No.:
Date:
21
3
4
5
6 7
8
9
10
11
13 12
14
15
A0017186
å 4 Example of sensor nameplate
1Name of the sensor
2 Manufacturing location
3 Order code
4 Serial number (Ser. no.)
5 Extended order code (Ext. ord. cd.)
6 Nominal diameter of the sensor
7 Test pressure of the sensor
8 Medium temperature range
9 Material of lining and electrodes
10 Degree of protection: e.g. IP, NEMA
11 Permitted ambient temperature (Ta)
12 2-D matrix code
13 CE mark, C-Tick
14 Flow direction
15 Manufacturing date: year-month
Order code
The measuring device is reordered using the order code.
Extended order code
• The device type (product root) and basic specifications (mandatory features) are always listed.
• Of the optional specifications (optional features), only the safety and approval-related
specifications are listed (e.g. LA). If other optional specifications are also ordered, these are
indicated collectively using the # placeholder symbol (e.g. #LA#).
• If the ordered optional specifications do not include any safety and approval-related
specifications, they are indicated by the + placeholder symbol (e.g. XXXXXX-ABCDE+).

Proline Promag L 400 HART Incoming acceptance and product identification
Endress+Hauser 15
4.2.3 Symbols on measuring device
Symbol Meaning
#
WARNING!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in serious or fatal
injury.
A0011194
Reference to documentation
Refers to the corresponding device documentation.
*
A0011199
Protective ground connection
A terminal which must be connected to ground prior to establishing any other connections.

Storage and transport Proline Promag L 400 HART
16 Endress+Hauser
5 Storage and transport
5.1 Storage conditions
Observe the following notes for storage:
• Store in the original packaging to ensure protection from shock.
• Do not remove protective covers or protective caps installed on process connections. They prevent
mechanical damage to the sealing surfaces and contamination in the measuring tube.
• Protect from direct sunlight to avoid unacceptably high surface temperatures.
• Select a storage location where moisture cannot collect in the measuring device as fungus and
bacteria infestation can damage the lining.
• Store in a dry and dust-free place.
• Do not store outdoors.
•Storage temperature(® ä 130)
5.2 Transporting the product
5.2.1 For measuring devices £ DN 300 (12")
!WARNING
Center of gravity of the measuring device is higher than the suspension points of the
webbing slings.
Risk of injury if the measuring device slips.
►Secure the measuring device from rotating or slipping.
►Observe the weight specified on the packaging (stick-on label).
►Observe the transport instructions on the stick-on label on the electronics compartment cover.
A0015606
Observe the following notes during transport:
• Transport the measuring device to the measuring point in the original packaging.
• Lifting gear
– Webbing slings: Do not use chains, as they could damage the housing.
– For wood crates, the floor structure enables these to be loaded lengthwise or broadside using a
forklift.
•For measuring device £ DN 300 (12"): lift the measuring device using the webbing slings at the
process connections; do not lift at the transmitter housing or the connection housing of the remote
version.
• Do not remove protective covers or protective caps installed on process connections. They prevent
mechanical damage to the sealing surfaces and contamination in the measuring tube.
5.2.2 For measuring devices ³ DN 350 (14")
Also observe the following notes during transport:
• Lift the measuring device by the flange using the metal brackets.
• If transporting by forklift, do not lift the sensor by the metal casing. This would buckle the casing
and damage the internal magnetic coils.

Proline Promag L 400 HART Storage and transport
Endress+Hauser 17
A0016257
5.3 Packaging disposal
All packaging materials are environmentally friendly and 100% recyclable:
• Measuring device secondary packaging: polymer stretch film that conforms to EC Directive
2002/95/EC (RoHS).
• Packaging:
– Wood crate, treated in accordance with ISPM 15 standard, which is confirmed by the affixed
IPPC logo.
or
– Carton in accordance with European Packaging Directive 94/62EC; recyclability is confirmed
by the affixed RESY symbol.
• Seaworthy packaging (optional): Wood crate, treated in accordance with ISPM 15 standard, which
is confirmed by the affixed IPPC logo.
• Carrying and mounting hardware:
– Disposable plastic pallet
– Plastic straps
– Plastic adhesive strips
• Dunnage: Paper cushion

Installation Proline Promag L 400 HART
18 Endress+Hauser
6 Installation
6.1 Installation conditions
No special measures such as supports are necessary. External forces are absorbed by the construction
of the device.
6.1.1 Mounting position
Mounting location
Preferably install the sensor in an ascending pipe, and ensure a sufficient distance to the next pipe
elbow: h = ³ 2 × DN
h
A0017061
To prevent measuring errors arising from accumulation of gas bubbles in the measuring tube, avoid
the following mounting locations in the pipe:
• Highest point of a pipeline.
• Directly upstream of a free pipe outlet in a down pipe.
Installation in down pipes
Install a siphon or a vent valve downstream of the sensor in down pipes whose length
h ³ 5 m (16.4 ft).This precaution is to avoid low pressure and the consequent risk of damage to the
measuring tube. This measure also prevents the system losing prime, which could cause air pockets.
For information on the liner's resistance to partial vacuum (® ä 131)
h
2
1
A0017064
å 5 Installation in a down pipe
1Vent valve
2 Pipe siphon
h Length of down pipe

Proline Promag L 400 HART Installation
Endress+Hauser 19
Installation in partially filled pipes
A partially filled pipe with a gradient necessitates a drain-type configuration. The empty pipe
detection (EPD) function offers additional protection by detecting empty or partially filled pipes.
• Do not install the sensor at the lowest point in the drain: risk of solids accumulating.
• It is advisable to install a cleaning valve.
³5 × DN ³2 × DN
A0017063
For very heavy sensors
If the nominal diameter DN ³ 350 (14 in), mount the sensor on a foundation of adequate load-
bearing strength.
NOTICE
Very heavy!
Risk of damaging the metal casing and the internal magnetic coils.
►Do not support the weight of the sensor on the metal casing.
A0016276
Orientation
The direction of the arrow on the sensor nameplate helps you to install the sensor according to the
flow direction (direction of medium flow through the piping).
An optimum orientation position helps avoid gas and air accumulations and deposits in the measuring
tube.
The measuring device also offers the empty pipe detection function to detect:
• Partially empty measuring pipes
• Outgassing fluids
• Applications with variable process pressures
Vertical
This is the optimum orientation for self-emptying piping systems and for use in conjunction with
empty pipe detection.

Installation Proline Promag L 400 HART
20 Endress+Hauser
A0015591
Horizontal
The measuring electrode plane must be horizontal. This prevents brief insulation of the two
measuring electrodes by entrained air bubbles.
With horizontal orientation, empty pipe detection only works if the transmitter housing is
pointing upwards as otherwise there is no guarantee that the empty pipe detection function
will actually respond to a partially filled or empty measuring tube.
A
A
1
2
3
2
A0016260
å 6 Horizontal orientation
1EPD electrode for empty pipe detection
2 Measuring electrodes for signal detection
3 Reference electrode for potential equalization
Inlet and outlet runs
If possible, install the sensor upstream from fittings such as valves, T-pieces or elbows.
Observe the following inlet and outlet runs to comply with accuracy specifications:
•Inlet run ³ 5 ´ DN
•Outlet run ³ 2 ´ DN
5 × DN³³2 × DN
A0016275
Installation dimensions
For the dimensions and installation lengths of the device, see the "Technical Information"
document, "Mechanical construction" section