Endress+Hauser Deltabar PMD78B User manual

Products Solutions Services
Operating Instructions
Deltabar PMD78B
Differential pressure measurement
HART
BA02015P/00/EN/04.21
71547518
2021-11-30
Valid as of version
01.00.zz (Device firmware)

Deltabar PMD78B HART
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
• Make sure the document is stored in a safe place such that it is always available when
working on or with the device
• 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. The
Endress+Hauser sales organization will supply you with current information and updates
to these instructions.

Deltabar PMD78B HART Table of contents
Endress+Hauser 3
Table of contents
1 About this document ............... 5
1.1 Document function ..................... 5
1.2 Symbols ............................. 5
1.3 List of abbreviations ..................... 7
1.4 Turn down calculation ................... 7
1.5 Documentation ........................ 8
1.6 Registered trademarks ................... 8
2 Basic safety instructions ............ 9
2.1 Requirements for the personnel ............ 9
2.2 Intended use .......................... 9
2.3 Workplace safety ....................... 9
2.4 Operational safety ...................... 9
2.5 Product safety ........................ 10
2.6 Functional Safety SIL (optional) ........... 10
2.7 IT security ........................... 10
2.8 Device-specific IT security ............... 10
3 Product description ............... 11
3.1 Product design ....................... 11
4 Incoming acceptance and product
identification ..................... 14
4.1 Incoming acceptance ................... 14
4.2 Product identification ................... 14
4.3 Storage and transport .................. 15
5 Mounting ......................... 16
5.1 Mounting requirements ................. 16
5.2 Mounting the device ................... 20
5.3 Post-mounting check ................... 29
6 Electrical connection .............. 30
6.1 Connecting requirements ............... 30
6.2 Connecting the device .................. 30
6.3 Ensuring the degree of protection ......... 34
6.4 Post-connection check .................. 35
7 Operation options ................. 36
7.1 Overview of operation options ............ 36
7.2 Operating keys and DIP switches on the
electronic insert ....................... 36
7.3 Structure and function of the operating
menu .............................. 36
7.4 Access to the operating menu via the local
display ............................. 37
7.5 Access to the operating menu via the
operating tool ........................ 39
7.6 HistoROM ........................... 40
8 System integration ................ 41
8.1 Overview of device description files ......... 41
8.2 Measured variables via HART protocol ...... 41
9 Commissioning ................... 43
9.1 Preliminaries ........................ 43
9.2 Function check ....................... 43
9.3 Establishing a connection via FieldCare and
DeviceCare .......................... 44
9.4 Configuring the device address via software .. 44
9.5 Setting the operating language ........... 45
9.6 Device configuration ................... 45
9.7 "Simulation" submenu ................... 54
9.8 Protecting settings from unauthorized
access .............................. 54
10 Operation ......................... 56
10.1 Reading off the device locking status ....... 56
10.2 Reading off measured values ............. 56
10.3 Adapting the device to process conditions .... 56
11 Diagnostics and troubleshooting ... 58
11.1 General troubleshooting ................. 58
11.2 Diagnostic information on local display ...... 62
11.3 Diagnostic event in the operating tool ....... 64
11.4 Adapting the diagnostic information ....... 64
11.5 Queued diagnostic messages ............. 64
11.6 Diagnostic list ........................ 64
11.7 Event logbook ........................ 67
11.8 Resetting the device .................... 69
11.9 Device information .................... 69
11.10 Firmware history ...................... 69
12 Maintenance ...................... 70
12.1 Maintenance tasks ..................... 70
13 Repair ............................ 71
13.1 General notes ........................ 71
13.2 Spare parts .......................... 71
13.3 Replacement ......................... 71
13.4 Return .............................. 73
13.5 Disposal ............................ 73
14 Accessories ....................... 74
14.1 Device-specific accessories ............... 74
14.2 Device Viewer ........................ 74
15 Technical data .................... 75
15.1 Output ............................. 75
15.2 Environment ......................... 78
15.3 Process ............................. 81

Table of contents Deltabar PMD78B HART
4 Endress+Hauser
Index .................................. 87

Deltabar PMD78B HART About this document
Endress+Hauser 5
1 About this document
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
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
Ground connection:
Terminal for connection to the grounding system.
1.2.3 Symbols for certain types of information
Permitted:
Procedures, processes or actions that are permitted.
Forbidden:
Procedures, processes or actions that are forbidden.

About this document Deltabar PMD78B HART
6 Endress+Hauser
Additional information:
Reference to documentation:
Reference to page:
Series of steps:
1.
,
2.
,
3.
Result of an individual step:
1.2.4 Symbols in graphics
Item numbers: 1, 2, 3 ...
Series of steps:
1.
,
2.
,
3.
Views: A, B, C, ...
1.2.5 Symbols on the device
Safety instructions:
Observe the safety instructions contained in the associated Operating Instructions.

Deltabar PMD78B HART About this document
Endress+Hauser 7
1.3 List of abbreviations
URL OPLMWP
LRL
0
p
LRV URV
1
2
3
4
A0029505
1 OPL: The OPL (overpressure limit = sensor overload limit) for the device depends on the lowest-rated element,
with regard to pressure, of the selected components, i.e. the process connection has to be taken into
consideration in addition to the measuring cell. Pay attention to the pressure/temperature dependency.
2 MWP: The MWP (maximum working pressure) for the sensors depends on the lowest-rated element, with
regard to pressure, of the selected components, i.e. the process connection has to be taken into consideration
in addition to the measuring cell. Pay attention to the pressure/temperature dependency. The MWP may be
applied at the device for an unlimited period of time. The MWP can be found on the nameplate.
3 The maximum sensor measuring range corresponds to the span between the LRL and URL. This sensor
measuring range is equivalent to the maximum calibratable/adjustable span.
4 The calibrated/adjusted span corresponds to the span between the LRV and URV. Factory setting: 0 to URL.
Other calibrated spans can be ordered as customized spans.
p Pressure
LRL Lower range limit
URL Upper range limit
LRV Lower range value
URV Upper range value
TD Turn down. Example - see the following section.
1.4 Turn down calculation
LRV URLURV LRL
1 = 2 3
A0029545
1 Calibrated/adjusted span
2 Zero point-based span
3 Upper range limit
Example:
• Sensor: 16 bar (240 psi)
• Upper range limit (URL) = 16 bar (240 psi)
• Calibrated/adjusted span: 0 to 8 bar (0 to 120 psi)
• Lower range value (LRV) = 0 bar (0 psi)
• Upper range value (URV) = 8 bar (120 psi)
TD =URL
|URV - LRV|

About this document Deltabar PMD78B HART
8 Endress+Hauser
In this example, the TD is 2:1. This span is based on the zero point.
1.5 Documentation
All available documents can be downloaded using:
• the serial number of the device (see cover page for description) or
• the data matrix code of the device (see cover page for description) or
• the "Downloads" area of the website www.endress.com
1.5.1 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.
1.6 Registered trademarks
HART®
Registered trademark of the FieldComm Group, Austin, Texas, USA
Bluetooth®
The Bluetooth® wordmark and logos are registered trademarks of Bluetooth SIG, Inc. and
any use of these trademarks by Endress+Hauser is licensed. 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.

Deltabar PMD78B HART Basic safety instructions
Endress+Hauser 9
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)
‣Follow instructions and comply with 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 Intended use
The Deltabar is a differential pressure transmitter for measuring pressure, flow, level and
differential pressure.
2.2.1 Incorrect use
The manufacturer is not liable for damage caused by improper or non-intended use.
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.
2.3 Workplace safety
When working on and with the device:
‣Wear the required personal protective equipment according to federal/national
regulations.
‣Switch off the supply voltage before connecting the device.
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, 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 the repair of an electrical device.

Basic safety instructions Deltabar PMD78B HART
10 Endress+Hauser
‣Use original spare parts and accessories from Endress+Hauser only.
Hazardous area
To eliminate the risk of danger to persons or the facility when the device is used in the
approval-related area (e.g. explosion protection, pressure equipment safety):
‣Check the nameplate to verify if the device ordered can be put to its intended use in the
approval-related area.
‣Observe the specifications in the separate supplementary documentation that is an
integral part of these Instructions.
2.5 Product safety
This 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 EC
directives listed in the device-specific EC Declaration of Conformity. Endress+Hauser
confirms this by affixing the CE mark to the device.
2.6 Functional Safety SIL (optional)
The Functional Safety Manual must be strictly observed for devices that are used in
functional safety applications.
2.7 IT security
Endress+Hauser can 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. 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.
2.8 Device-specific IT security
The device offers specific functions to support protective measures by the operator. These
functions can be configured by the user and guarantee greater in-operation safety if used
correctly. An overview of the most important functions is provided in the following section:
• Write protection via hardware write protection switch
• Access code to change the user role (applies for operation via display, Bluetooth or
FieldCare, DeviceCare, AMS, PDM)

Deltabar PMD78B HART Product description
Endress+Hauser 11
3 Product description
3.1 Product design
3.1.1 Measuring cell for differential pressure with metal process
membrane
+ -
p1
p2
p1
1
2
3
4
5
4
p2
A0043081
 1 Capillary on the second side (P1) is optional
1 Measuring element
2 Middle diaphragm
3 Fill fluid
4 Internal process membrane
5 Process membrane of the diaphragm seal
p1Pressure 1
p2Pressure 2
+ -
p1
p2
p1
1
2
3
44
p2
5
A0043082
1 Measuring element
2 Middle diaphragm
3 Fill fluid
4 Internal process membrane
5 Process membrane of the diaphragm seal
p1Pressure 1
p2Pressure 2
The pressures applied are transferred from the process membrane of the diaphragm seal
to the internal process membrane of the measuring cell by means of an incompressible fill
fluid, causing a deflection of the process membrane on both sides. A second fill fluid
transfers the pressure to a side of the measuring element where a resistance bridge is
located (semiconductor technology). The differential pressure-dependent change in the
bridge output voltage is measured and processed further.

Product description Deltabar PMD78B HART
12 Endress+Hauser
Applications for diaphragm seals
Diaphragm seal systems are used if the process and the device need to be separated.
Diaphragm seal systems offer clear advantages in the following instances:
• In the case of extreme process temperatures - through the use of temperature isolators
or capillaries
• In the case of strong vibrations - decouple the process from the device by using a
capillary
• In the case of aggressive or corrosive media - through the use of high-durability
membrane materials
• In the case of media that crystallize or contain solids - through the choice of suitable
coatings
• In the case of heterogeneous and fibrous process media
• If extreme measuring point cleaning is necessary, or in the event of very damp mounting
locations
• For mounting locations that are difficult to access
3.1.2 Level measurement (volume and mass):
Diaphragm seal on both sides with temperature isolator
h =
∆p
ρ g
+ -
+
–
h
A0038339
h Height (level)
Δp Differential pressure
ρ Density of the medium
g Gravitation constant
Diaphragm seal on both sides with capillary
+ -
–
+
h =
∆p
ρg
h
A0038345
h Height (level)
Δp Differential pressure
ρ Density of the medium
g Gravitation constant

Deltabar PMD78B HART Product description
Endress+Hauser 13
Advantages:
• Volume and mass measurements in any vessel shape with a freely programmable
characteristic curve
• Has a wide range of uses, e.g.:
• For level measurement in vessels with pressure overlay
• For foam formation
• In vessels with agitators or screen fittings
• For liquid gases
• For standard level measurement

Incoming acceptance and product identification Deltabar PMD78B HART
14 Endress+Hauser
4 Incoming acceptance and product
identification
4.1 Incoming acceptance
DELIVERY NOTE
1 = 2
A0016870
• Is the order code on the delivery note (1) identical to the order code on the product
sticker (2)?
• Are the goods undamaged?
• Do the data on the nameplate correspond to the order specifications and the delivery
note?
• Is the documentation available?
• If required (see nameplate): are the Safety Instructions (XA) provided?
If you can answer "no" to any of these questions, please contact Endress+Hauser.
4.1.1 Scope of delivery
The scope of delivery comprises:
• Device
• Optional accessories
Accompanying documentation:
• Brief Operating Instructions
• Final inspection report
• Additional Safety Instructions for devices with approvals (e.g. ATEX, IECEx, NEPSI, etc.)
• Optional: factory calibration form, test certificates
The Operating Instructions are available on the Internet at:
www.endress.com → Download
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 numbers from the nameplates in Device Viewer
(www.endress.com/deviceviewer): all the information about the measuring device is
displayed.
4.2.1 Manufacturer address
Endress+Hauser SE+Co. KG
Hauptstraße 1
79689 Maulburg, Germany
Place of manufacture: See nameplate.

Deltabar PMD78B HART Incoming acceptance and product identification
Endress+Hauser 15
4.2.2 Nameplate
Different nameplates are used depending on the device version.
The nameplates contain the following information:
• Manufacturer name and device name
• Address of the certificate holder and country of manufacture
• Order code and serial number
• Technical data
• Approval-specific information
Compare the data on the nameplate with your order.
4.3 Storage and transport
4.3.1 Storage conditions
• Use the original packaging
• Store the measuring device in clean and dry conditions and protect from damage caused
by shocks
Storage temperature range
See Technical Information.
4.3.2 Transporting the product to the measuring point
LWARNING
Incorrect transport!
Housing and membrane may become damaged, and there is a risk of injury!
‣Transport the measuring device to the measuring point in the original packaging.
LWARNING
Incorrect transport!
Capillaries may become damaged, and there is a risk of injury!
‣Do not use capillaries as a carrying aid for the diaphragm seals.

Mounting Deltabar PMD78B HART
16 Endress+Hauser
5 Mounting
NOTICE
The device can be damaged if handled incorrectly!
‣The removal of the screws with item number (1) is not permissible under any
circumstances and will void the warranty.
1
A0025336
5.1 Mounting requirements
5.1.1 General instructions
• Do not clean or touch process membrane with hard and/or pointed objects
• Do not remove process membrane protection until shortly before installation
Always firmly tighten the housing cover and the cable entries.
1. Counter-tighten the cable entries.
2. Tighten the coupling nut.
5.1.2 Installation instructions
• To ensure optimal readability of the local display, adjust the housing and local display
• Endress+Hauser offers a mounting bracket to mount the device on pipes or walls
• Use flushing rings for flanges, flange seals and pancake seals if buildup or clogging can
be expected at the process membrane
• The flushing ring is clamped between the process connection and the flange, flange
seal or pancake seal
• Material buildup in front of the process membrane is flushed away and the pressure
chamber is vented via the two lateral flushing holes
• When measuring in media containing solids (e.g. dirty liquids), installing separators and
drain valves is useful for capturing and removing sediment
• Using a valve manifold allows for easy commissioning, installation and maintenance
without interrupting the process
• When mounting the device, establishing the electrical connection and during operation:
prevent the penetration of moisture into the housing
• Point the cable and plug downwards as much as possible to prevent moisture from
entering (e.g. rainwater or condensation)

Deltabar PMD78B HART Mounting
Endress+Hauser 17
5.1.3 Installation instructions for devices with diaphragm seals
NOTICE
Incorrect handling!
Damage to the device!
‣The diaphragm seal and pressure transmitter form a closed, calibrated system which
has been filled with diaphragm seal fill fluid. Never open any of the holes for fill fluid.
‣Ensure strain relief to prevent the capillary from bending (bending radius ≥
100 mm (3.94 in).
‣Do not use capillaries as a carrying aid for the diaphragm seals.
‣Observe the application limits of the diaphragm seal fill fluid.
General information
In the case of devices with diaphragm seals and capillaries, the zero point shift caused by
the hydrostatic pressure of the filling fluid column in the capillaries must be taken into
account when selecting the measuring cell. Perform zero point adjustment if necessary. If a
measuring cell with a small measuring range is selected, a position adjustment can cause
the sensor to go over range (position adjustment due to zero point offset, caused by the
orientation of the liquid column of the fill fluid).
For devices with a capillary, use a suitable bracket (mounting bracket) for mounting.
When mounting, sufficient strain relief must be provided for the capillary to prevent the
capillary from bending (capillary bending radius ≥ 100 mm (3.94 in)).
Mount the capillary so that it is vibration-free (in order to avoid additional pressure
fluctuations).
Do not mount capillaries in the vicinity of heating or cooling lines and protect them
against direct sunlight.
More detailed installation instructions are provided in the Applicator
"Sizing Diaphragm Seal".
Vacuum applications
In vacuum applications, mount the pressure transmitter below the diaphragm seal. This
prevents additional vacuum loading of the diaphragm seal caused by the presence of fill
fluid in the capillary.
If the pressure transmitter is mounted above the diaphragm seal, do not exceed the
maximum height difference h1. The height difference h1 is shown in the Applicator
"Sizing Diaphragm Seal".

Mounting Deltabar PMD78B HART
18 Endress+Hauser
1
+ -
h1
– –
+ +
+ -
A B
2
≥ 100 (3.94)
1
A0038720
Unit of measurement mm (in)
A Recommended installation in a vacuum application
B Installation above the lower diaphragm seal
h1 Height difference (is shown in the Applicator "Sizing Diaphragm Seal")
1 Device
2 Bending radius ≥ 100 mm (3.94 in). Ensure strain relief to prevent the capillary from bending.
The maximum height difference depends on the density of the diaphragm seal fill fluid
and the lowest absolute pressure that can ever occur at the diaphragm seal (empty
container).
Cleaning instructions
Endress+Hauser provides flushing rings as an accessory to enable the process membrane
to be cleaned without removing the transmitter from the process.
For more information: contact the Endress+Hauser sales office.
5.1.4 Installing pressure piping
• For recommendations for routing pressure piping, refer to DIN 19210 "Differential
pressure piping for flow measurement devices" or the corresponding national or
international standards
• When routing the pressure piping outdoors, ensure sufficient anti-freeze protection, e.g.
by using pipe heat tracing
• Install the pressure piping with a monotonic gradient of at least 10%

Deltabar PMD78B HART Mounting
Endress+Hauser 19
5.1.5 Orientation
Diaphragm seal on one side or both sides with temperature isolator
CD
+ -
+ -
+ -
+ -
AB
+ -
+ -
+ -
+ -
A0038658
A Design HP side: Transmitter horizontal, temperature isolator long
B Design HP side: Transmitter vertical, temperature isolator long
C Design HP side: Transmitter horizontal, temperature isolator short
D Design HP side: Transmitter vertical, temperature isolator short

Mounting Deltabar PMD78B HART
20 Endress+Hauser
Diaphragm seal on one side or both sides with capillary
In vacuum applications, mount the pressure transmitter below the lower diaphragm seal.
+ +- -
A0039528
Use "Sizing Diaphragm Seal" for the installation check.
5.2 Mounting the device
5.2.1 Level measurement
Level measurement in an open vessel, diaphragm seal on one side with temperature
isolator
+
–
min.
max.
2
patm
patm
+ -
1
A0038702
1 Device
2 The negative side is open to atmospheric pressure
• Mount the device directly on the vessel
• The negative side is open to atmospheric pressure