Endress+Hauser MODBUS RS485 User manual

Products Solutions Services
Operating Instructions
LPGmass
Modbus RS485
Coriolis flowmeter
BA01316D/06/EN/01.16
71311937
Valid as of version
01.03.zz (Device firmware)

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.

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
1.4 Registered trademarks ................... 7
2 Basic safety instructions ............ 8
2.1 Requirements for personnel ............... 8
2.2 Designated use ........................ 8
2.3 Workplace safety ....................... 9
2.4 Operational safety ...................... 9
2.5 Product safety ......................... 9
2.6 IT security ............................ 9
3 Product description ................ 11
3.1 Product design ........................ 11
3.1.1 Device version with Modbus RS485
communication type ............. 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 Promass 100 safety barrier -
nameplate .................... 15
4.2.4 Symbols on measuring device ...... 15
5 Storage and transport ............. 16
5.1 Storage conditions ..................... 16
5.2 Transporting the product ................ 16
5.2.1 Measuring devices without lifting
lugs ......................... 16
5.2.2 Measuring devices with lifting lugs .. 17
5.2.3 Transporting with a fork lift ........ 17
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 ....................... 19
6.1.3 Special mounting instructions ...... 20
6.2 Mounting the measuring device ........... 20
6.2.1 Required tools .................. 20
6.2.2 Preparing the measuring device ..... 20
6.2.3 Mounting the measuring device ..... 20
6.3 Post-installation check .................. 21
7 Electrical connection .............. 22
7.1 Connection conditions .................. 22
7.1.1 Required tools .................. 22
7.1.2 Requirements for connecting cable ... 22
7.1.3 Terminal assignment ............. 24
7.1.4 Preparing the measuring device ..... 25
7.2 Connecting the measuring device .......... 25
7.2.1 Connecting the transmitter ........ 26
7.2.2 Connecting the Safety Barrier
Promass 100 ................... 27
7.2.3 Ensure potential equalization ...... 27
7.3 Special connection instructions ............ 28
7.3.1 Connection examples ............. 28
7.4 Hardware settings ..................... 28
7.4.1 Enabling the terminating resistor .... 28
7.5 Ensuring the degree of protection .......... 29
7.6 Post-connection check .................. 29
8 Operation options ................. 31
8.1 Overview of operating options ............ 31
8.2 Structure and function of the operating
menu .............................. 32
8.2.1 Structure of the operating menu .... 32
8.2.2 Operating philosophy ............ 33
8.3 Access to the operating menu via the
operating tool ........................ 33
8.3.1 Connecting the operating tool ...... 33
8.3.2 FieldCare ..................... 34
8.3.3 DeviceCare .................... 35
9 System integration ................ 36
9.1 Overview of device description files ......... 36
9.1.1 Current version data for the device ... 36
9.1.2 Operating tools ................. 36
9.2 Modbus RS485 information .............. 36
9.2.1 Function codes ................. 36
9.2.2 Register information ............. 37
9.2.3 Response time .................. 37
9.2.4 Modbus data map ............... 37
10 Commissioning .................... 40
10.1 Function check ....................... 40
10.2 Establishing a connection via FieldCare ...... 40
10.3 Setting the operating language ............ 40

Table of contents
4 Endress+Hauser
10.4 Configuring the measuring device .......... 40
10.4.1 Defining the tag name ............ 40
10.4.2 Setting the system units .......... 41
10.4.3 Selecting and setting the medium ... 43
10.4.4 Configuring the communication
interface ...................... 44
10.4.5 Configuring the low flow cut off ..... 46
10.4.6 Configuring the partial filled pipe
detection ..................... 47
10.5 Advanced settings ..................... 48
10.5.1 Calculated values ................ 48
10.5.2 Carrying out a sensor adjustment .... 49
10.5.3 Configuring the totalizer .......... 50
10.5.4 Using parameters for device
administration ................. 51
10.6 Simulation ........................... 51
10.7 Protecting settings from unauthorized
access .............................. 52
10.7.1 Write protection via write protection
switch ........................ 52
11 Operation ......................... 54
11.1 Reading the device locking status .......... 54
11.2 Adjusting the operating language .......... 54
11.3 Reading measured values ................ 54
11.3.1 "Measured variables" submenu ...... 54
11.3.2 "Totalizer" submenu .............. 55
11.4 Adapting the measuring device to the process
conditions ........................... 56
11.5 Performing a totalizer reset .............. 56
11.5.1 Function scope of the "Control
Totalizer" parameter ............. 57
11.5.2 Function scope of the "Reset all
totalizers" parameter ............. 57
12 Diagnostics and troubleshooting ... 58
12.1 General troubleshooting ................. 58
12.2 Diagnostic information via light emitting
diodes .............................. 58
12.2.1 Transmitter .................... 58
12.2.2 Safety Barrier Promass 100 ........ 59
12.3 Diagnostic information in DeviceCare or
FieldCare ............................ 59
12.3.1 Diagnostic options ............... 59
12.3.2 Calling up remedy information ...... 61
12.4 Diagnostic information via communication
interface ............................ 61
12.4.1 Reading out diagnostic information .. 61
12.4.2 Configuring error response mode .... 61
12.5 Adapting the diagnostic information ....... 62
12.5.1 Adapting the diagnostic behavior .... 62
12.6 Overview of diagnostic information ........ 62
12.7 Pending diagnostic events ............... 64
12.8 Diagnostic list ........................ 65
12.9 Event logbook ........................ 65
12.9.1 Event history ................... 65
12.9.2 Filtering the event logbook ........ 66
12.9.3 Overview of information events ..... 66
12.10 Resetting the measuring device ........... 67
12.10.1 Function scope of the "Device reset"
parameter ..................... 67
12.11 Device information .................... 67
12.12 Firmware history ...................... 69
13 Maintenance ...................... 70
13.1 Maintenance tasks ..................... 70
13.1.1 Exterior cleaning ................ 70
13.2 Measuring and test equipment ............ 70
13.3 Endress+Hauser services ................ 70
14 Repairs ........................... 71
14.1 General notes ........................ 71
14.1.1 Repair and conversion concept ...... 71
14.1.2 Notes for repair and conversion ..... 71
14.2 Spare parts .......................... 71
14.3 Endress+Hauser services ................ 71
14.4 Return .............................. 71
14.5 Disposal ............................ 72
14.5.1 Removing the measuring device ..... 72
14.5.2 Disposing of the measuring device ... 72
15 Accessories ....................... 73
15.1 Service-specific accessories ............... 73
16 Technical data .................... 74
16.1 Application .......................... 74
16.2 Function and system design .............. 74
16.3 Input ............................... 74
16.4 Output ............................. 75
16.5 Power supply ......................... 76
16.6 Performance characteristics .............. 77
16.7 Installation .......................... 80
16.8 Environment ......................... 80
16.9 Process ............................. 81
16.10 Mechanical construction ................ 81
16.11 Operability .......................... 83
16.12 Certificates and approvals ............... 84
16.13 Accessories .......................... 84
16.14 Supplementary documentation ............ 85
Index .................................. 86

LPGmass Modbus RS485 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
DANGER!
This symbol alerts you to a dangerous situation. Failure to avoid this situation will
result in serious or fatal injury.
WARNING
WARNING!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can
result in serious or fatal injury.
CAUTION
CAUTION!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can
result in minor or medium injury.
NOTICE
NOTE!
This symbol contains information on procedures and other facts which do not result in
personal injury.
1.2.2 Electrical symbols
Symbol Meaning
Direct current
Alternating current
Direct current and alternating current
Ground connection
A grounded terminal which, as far as the operator is concerned, is grounded via a
grounding system.
Protective ground connection
A terminal which must be connected to ground prior to establishing any other
connections.
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
Allen key
Open-ended wrench

Document information LPGmass Modbus RS485
6 Endress+Hauser
1.2.4 Symbols for certain types of information
Symbol Meaning
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
A
Reference to page
Reference to graphic
Notice or individual step to be observed
1.
,
2.
,
3.
… Series of steps
Result of a step
Help in the event of a problem
Visual inspection
1.2.5 Symbols in graphics
Symbol Meaning
1, 2, 3,... Item numbers
1.
,
2.
,
3.
… Series of steps
A, B, C, ... Views
A-A, B-B, C-C, ... Sections
-
Hazardous area
.
Safe area (non-hazardous area)
Flow direction
1.3 Documentation
For an overview of the scope of the associated Technical Documentation, refer to the
following:
• The W@M Device Viewer : Enter the serial number from the nameplate
(www.endress.com/deviceviewer)
• The Endress+Hauser Operations App: Enter the serial number from the nameplate
or scan the 2-D matrix code (QR code) on the nameplate.
For a detailed list of the individual documents along with the documentation code
→  85

LPGmass Modbus RS485 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.
Sensor Brief Operating Instructions Guides you quickly to the 1st measured value - Part 1
The Sensor Brief Operating Instructions are aimed at specialists with
responsibility for installing the measuring device.
• Incoming acceptance and product identification
• Storage and transport
• Installation
Transmitter Brief Operating
Instructions
Guides you quickly to the 1st measured value - Part 2
The Transmitter Brief Operating Instructions are aimed at specialists with
responsibility for commissioning, configuring and parameterizing the
measuring device (until the first measured value).
• Product description
• Installation
• Electrical connection
• Operation options
• System integration
• Commissioning
• Diagnostic information
Description of Device Parameters Reference for your parameters
The document provides a detailed explanation of each individual
parameter in the Expert operating menu. The description is aimed at
those who work with the device over the entire life cycle and perform
specific configurations.
The document provides Modbus-specific information for each individual
parameter in the Expert operating menu.
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.
1.4 Registered trademarks
Modbus®
Registered trademark of SCHNEIDER AUTOMATION, INC.
Microsoft®
Registered trademark of the Microsoft Corporation, Redmond, Washington, USA

Basic safety instructions LPGmass Modbus RS485
8 Endress+Hauser
2 Basic safety instructions
2.1 Requirements for 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 Designated use
Application and media
The measuring device described in these Instructions is intended only for flow
measurement of liquids and gases.
Depending on the version ordered, the measuring device can also measure potentially
explosive, flammable, poisonous and oxidizing media.
Measuring devices for use in hazardous areas, in hygienic applications or where there is an
increased risk due to process pressure, are labeled accordingly on the nameplate.
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 to which the process-wetted materials are
sufficiently resistant.
‣If the measuring device is not operated at atmospheric temperature, compliance with
the relevant basic conditions specified in the associated device documentation is
absolutely essential: "Documentation" section →  6.
‣Protect the measuring device permanently against corrosion from environmental
influences.
Incorrect use
Non-designated use can compromise safety. The manufacturer is not liable for damage
caused by improper or non-designated use.
LWARNING
Danger of breakage 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.
‣Keep within the specified pressure and temperature range.
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

LPGmass Modbus RS485 Basic safety instructions
Endress+Hauser 9
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
LWARNING
The electronics and the medium may cause the surfaces to heat up. This presents a
burn hazard!
‣For elevated fluid temperatures, 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.
If working on and with the device with wet hands:
‣Due to the increased risk of electric shock, gloves must be worn.
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.
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 general safety standards and legal requirements. It also complies with the EU
directives listed in the device-specific EU Declaration of Conformity. Endress+Hauser
confirms this by affixing the CE mark to the device.
2.6 IT security
We only provide a warranty if the device is installed and used as described in the
Operating Instructions. The device is equipped with security mechanisms to protect it
against any inadvertent changes to the device settings.

Basic safety instructions LPGmass Modbus RS485
10 Endress+Hauser
IT security measures in line with operators' security standards and designed to provide
additional protection for the device and device data transfer must be implemented by the
operators themselves.

LPGmass Modbus RS485 Product description
Endress+Hauser 11
3 Product description
The device consists of a transmitter and a sensor. If a device is ordered with Modbus
RS485 intrinsically safe, the Safety Barrier Promass 100 is part of the scope of supply and
must be implemented to operate the device.
One device version is available: compact version, transmitter and sensor form a mechanical
unit.
3.1 Product design
3.1.1 Device version with Modbus RS485 communication type
3
2
1
4
A0017609
 1 Important components of a measuring device
1 Sensor
2 Transmitter housing
3 Main electronics module
4 Transmitter housing cover
In the case of the device version with Modbus RS485 intrinsically safe, the Safety
Barrier Promass 100 forms part of the scope of supply.

Incoming acceptance and product identification LPGmass Modbus RS485
12 Endress+Hauser
4 Incoming acceptance and product
identification
4.1 Incoming acceptance
A0028673
1
2
1
2
A0029314
Are the order codes on the
delivery note (1) and the
product sticker (2) identical?
A0029315
A0028673
A0029316
Are the goods undamaged?
A0028673
Order code:
Ser. no.:
Ext. ord. cd.:
ii
Date:
A0029317
Do the nameplate data
match the ordering
information on the delivery
note?
A0028673
A0029318
Is the CD-ROM with the
Technical Documentation
(depends on device version)
and documents present?
• If one of the conditions is not satisfied, contact your Endress+Hauser Sales Center.
• Depending on the device version, the CD-ROM might not be part of the delivery!
The Technical Documentation is available via the Internet or via the Endress+Hauser
Operations App, see the "Product identification" section →  13.

LPGmass Modbus RS485 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.
• Enter the serial number from the nameplates 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 for the measuring device is displayed.
For an overview of the scope of the associated Technical Documentation, refer to the
following:
• The chapters "Additional standard documentation on the device" →  7 and
"Supplementary device-dependent documentation" →  7
• The W@M Device Viewer: Enter the serial number from the nameplate
(www.endress.com/deviceviewer)
• The Endress+Hauser Operations App: Enter the serial number from the nameplate or
scan the 2-D matrix code (QR code) on the nameplate.
4.2.1 Transmitter nameplate
i
1
2
3
4
5
6
7
8
9
101112
Order code:
Ext. ord. cd.:
Ser. no.:
13
A0030222
 2 Example of a transmitter nameplate
1 Manufacturing location
2 Name of the transmitter
3 Order code
4 Serial number (ser. no.)
5 Extended order code (Ext. ord. cd.)
6 Electrical connection data, e.g. available inputs and outputs, supply voltage
7 Permitted ambient temperature (Ta)
8 Degree of protection
9 2-D matrix code
10 Document number of safety-related supplementary documentation →  85
11 Manufacturing date: year-month
12 CE mark, C-Tick
13 Firmware version (FW)

Incoming acceptance and product identification LPGmass Modbus RS485
14 Endress+Hauser
4.2.2 Sensor nameplate
Date:
Size:
Material:
Tm:
Patents
i
Ptest =
i
Order code:
Ext. ord. cd.:
Ser. no.:
322541-0000
0044
11
1
2
3 4 5 6 7
12
8
9
13 14 15
16
17
19
18
10
A0013907
 3 Example of a sensor nameplate
1 Manufacturing location
2 Name of the sensor
3 Order code
4 Serial number (ser. no.)
5 Extended order code (Ext. ord. cd.)
6 Nominal diameter of sensor
7 Test pressure of the sensor
8 Flange nominal diameter/nominal pressure
9 Material of measuring tube and manifold
10 Medium temperature range
11 CE mark, C-Tick
12 Additional information on version: certificates, approvals
13 Manufacturing date: year-month
14 Flow direction
15 2-D matrix code
16 Degree of protection
17 Approval information for explosion protection and Pressure Equipment Directive
18 Permitted ambient temperature (Ta)
19 Document number of safety-related supplementary documentation
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
+).

LPGmass Modbus RS485 Incoming acceptance and product identification
Endress+Hauser 15
4.2.3 Promass 100 safety barrier - nameplate
NON intrinsically safe circuit
(grey terminals)
Safe area
Safety Barrier
Promass 100
Intrinsically safe circuits
(blue terminals)
HAZARDOUS area
i
1
3
4
5
6
7
8
9
10
11
2
A0017854
 4 Example of a Safety Barrier Promass 100 nameplate
1 Non-hazardous area or zone 2/div. 2
2 Serial number, material number and 2-D matrix code of the Safety Barrier Promass 100
3 Electrical connection data, e.g. available inputs and outputs, supply voltage
4 Approval information for explosion protection
5 Safety warning
6 Communication-specific information
7 Intrinsically safe area
8 Manufacturing location
9 Document number of safety-related supplementary documentation
10 Permitted ambient temperature (Ta)
11 CE mark, C-Tick
4.2.4 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.
Reference to documentation
Refers to the corresponding device documentation.
Protective ground connection
A terminal which must be connected to ground prior to establishing any other connections.

Storage and transport LPGmass Modbus RS485
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.
• Store in a dry and dust-free place.
• Do not store outdoors.
Storage temperature: –50 to +80 °C (–58 to +176 °F),
5.2 Transporting the product
Transport the measuring device to the measuring point in the original packaging.
A0029252
Do not remove protective covers or caps installed on process connections. They
prevent mechanical damage to the sealing surfaces and contamination in the
measuring tube.
5.2.1 Measuring devices without lifting lugs
LWARNING
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 against slipping or turning.
‣Observe the weight specified on the packaging (stick-on label).
A0029214

LPGmass Modbus RS485 Storage and transport
Endress+Hauser 17
5.2.2 Measuring devices with lifting lugs
LCAUTION
Special transportation instructions for devices with lifting lugs
‣Only use the lifting lugs fitted on the device or flanges to transport the device.
‣The device must always be secured at two lifting lugs at least.
5.2.3 Transporting with a fork lift
If transporting in wood crates, the floor structure enables the crates to be lifted lengthwise
or at both sides using a forklift.
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 LPGmass Modbus RS485
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
A0028772
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.
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).
Orientation Recommendation
AVertical orientation
A0015591
BHorizontal orientation, transmitter
head up
A0015589
1)
Exceptions:
→  5,  19
CHorizontal orientation, transmitter
head down
A0015590
2)
Exceptions:
→  5,  19
DHorizontal orientation, transmitter
head at side
A0015592
1) Applications with low process temperatures may decrease the ambient temperature. To maintain the
minimum ambient temperature for the transmitter, this orientation is recommended.
2) Applications with high process temperatures may increase the ambient temperature. To maintain the
maximum ambient temperature for the transmitter, this orientation is recommended.

LPGmass Modbus RS485 Installation
Endress+Hauser 19
If a sensor is installed horizontally with a curved measuring tube, match the position of the
sensor to the fluid properties.
1 2
A0028774
 5 Orientation of sensor with curved measuring tube
1 Avoid this orientation for fluids with entrained solids: Risk of solids accumulating.
2 Avoid this orientation for outgassing fluids: Risk of gas accumulating.
Inlet and outlet runs
No special precautions need to be taken for fittings which create turbulence, such as
valves, elbows or T-pieces, as long as no cavitation occurs →  19.
A0029322 A0029323
Installation dimensions
For the dimensions and installation lengths of the device, see the "Technical
Information" document, "Mechanical construction" section
6.1.2 Requirements from environment and process
Ambient temperature range
Measuring device –40 to +60 °C (–40 to +140 °F)
Safety Barrier Promass 100 –40 to +60 °C (–40 to +140 °F)
‣If operating outdoors:
Avoid direct sunlight, particularly in warm climatic regions.
System pressure
It is important that cavitation does not occur, or that gases entrained in the liquids do not
outgas.
Cavitation is caused if the pressure drops below the vapor pressure:
• In liquids that have a low boiling point (e.g. hydrocarbons, solvents, liquefied gases)
• In suction lines
‣Ensure the system pressure is sufficiently high to prevent cavitation and outgassing.

Installation LPGmass Modbus RS485
20 Endress+Hauser
For this reason, the following mounting locations are recommended:
• At the lowest point in a vertical pipe
• Downstream from pumps (no danger of vacuum)
A0028777
Vibrations
The high oscillation frequency of the measuring tubes ensures that the correct operation of
the measuring system is not influenced by plant vibrations.
6.1.3 Special mounting instructions
Zero point adjustment
All measuring devices are calibrated in accordance with state-of-the-art technology.
Calibration takes place under reference conditions →  77. Therefore, a zero point
adjustment in the field is generally not required.
Experience shows that zero point adjustment is advisable only in special cases:
• To achieve maximum measuring accuracy even with low flow rates
• Under extreme process or operating conditions (e.g. very high process temperatures or
very high-viscosity fluids).
6.2 Mounting the measuring device
6.2.1 Required tools
For sensor
For flanges and other process connections: Corresponding mounting tools
6.2.2 Preparing the measuring device
1. Remove all remaining transport packaging.
2. Remove any protective covers or protective caps present from the sensor.
3. Remove stick-on label on the electronics compartment cover.
6.2.3 Mounting the measuring device
LWARNING
Danger due to improper process sealing!
‣Ensure that the inside diameters of the gaskets are greater than or equal to that of the
process connections and piping.
‣Ensure that the gaskets are clean and undamaged.
‣Install the gaskets correctly.
1. Ensure that the direction of the arrow on the nameplate of the sensor matches the
flow direction of the fluid.