Endress+Hauser Deltabar S PMD70 Technical specifications

KA01021P/00/EN/13.11
71139770
Brief Operating Instructions
Deltabar S
PMD70, PMD75, FMD76, FMD77, FMD78
Differential pressure measurement
These are Brief Operating Instructions.
For more detailed information, please refer to the Operating Instructions and the
additional documentation on the CD-ROM provided.
These Brief Operating Instructions are not intended to replace the Operating
Instructions provided in the scope of supply.
The complete device documentation consists of:
•these Brief Operating Instructions
•a CD-ROM with:
–the Operating Instructions
–Technical Information

Table of contents Deltabar S PROFIBUS PA
2Endress+Hauser
Table of contents
1 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Installation, commissioning and operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Operational safety and process safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.4 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.5 Safety icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 General installation instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Measuring arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3 Installation instructions for devices with diaphragm seals (FMD78) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 Assembling and mounting the "separate housing" version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 Connecting the device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2 Connecting the measuring unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1 On-site display (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2 Operating elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.3 On-site operation via on-site display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.4 Configuring the device address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.5 Locking/unlocking operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.1 Position adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.2 Differential pressure measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.3 Level measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.4 Flow measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Deltabar S PROFIBUS PA Safety instructions
Endress+Hauser 3
1 Safety instructions
1.1 Designated use
The Deltabar S is a differential pressure transmitter for measuring differential pressure, level and
flow.
The manufacturer accepts no liability for damages resulting from incorrect use or use other than
that designated.
1.2 Installation, commissioning and operation
•The device must only be installed, connected, commissioned and maintained by qualified and
authorized specialists (e.g. electrical technicians) in full compliance with the instructions in
this manual, the applicable norms, legal regulations and certificates (depending on the
application).
•The specialist must have read and understood this manual and must follow the instructions it
contains. If you are unclear on anything in these Brief Operating Instructions, you must read
the Operating Instructions (on the CD-ROM). The Operating Instructions provide detailed
information on the device/measuring system.
•The device may only be modified or repaired if such work is expressly permitted in the
Operating Instructions (→ see CD-ROM).
•If faults cannot be rectified, the device must be taken out of service and secured against
unintentional commissioning.
•Do not operate damaged devices. Mark them as defective.
1.3 Operational safety and process safety
•Alternative monitoring measures must be taken to ensure operational safety and process safety
during configuration, testing and maintenance work on the device.
•The device is safely built and tested according to state-of-the-art technology and has left the
factory in perfect condition as regards technical safety. The applicable regulations and
European standards have been taken into account.
•Pay particular attention to the technical data on the nameplate.
•Devices for use in hazardous areas are fitted with an additional nameplate. If the device is to
be installed in an explosion hazardous area, then the specifications in the certificate as well as
all national and local regulations must be observed. The device is accompanied by separate
"Ex documentation", which is an integral part of this Operating Instructions. The installation
regulations, connection values and Safety Instructions listed in this Ex document must be
observed. The documentation number of the related Safety Instructions is also indicated on
the additional nameplate.
1.4 Return
Follow the instructions on returning the device as outlined in the Operating Instructions on the
CD-ROM provided.

Installation Deltabar S PROFIBUS PA
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1.5 Safety icons
2 Installation
2.1 General installation instructions
#Warning!
The seal is not allowed to press on the process isolating diaphragm as this could affect the
measurement result.
!Note!
• Due to the orientation of the Deltabar S, there may be a shift in the measured value, i.e. when
the container is empty, the measured value does not display zero. You can correct this zero point
shift either via the "zero" key on the electronic insert, or on the outside of the device or via the
on-site display.
→ See Page 13 , 4.2.1 "Position of operating elements", Page 14 , Section 4.2.2
"Function of the operating elements" or Page
23 , Section 5.1 "Position adjustment".
•For FMD77 and FMD78, please refer to Section 2.3 "Installation instructions for devices with
diaphragm seals", Page 6.
•The FMD77 must only be insulated up to a certain height.
•General recommendations for routing the impulse piping can be found in DIN 19210
"Methods for measurement of fluid flow; differential piping for flow measurement devices" or
the corresponding national or international standards.
•Using a three-valve or five-valve manifold allows for easy commissioning, installation and
maintenance without interrupting the process.
•When routing the impulse piping outdoors, ensure that sufficient anti-freeze protection is used,
e.g. by using pipe heat tracing.
•Install the impulse piping with a monotonic gradient of at least 10%.
•Do not clean or touch diaphragm seals with hard or pointed objects.
•To ensure optimal readability of the on-site display, it is possible to rotate the housing up to
380°.
Symbol Meaning
#Warning!
A warning highlights actions or procedures which, if not performed correctly, will lead to personal injury,
a safety hazard or destruction of the instrument.
"Caution!
Caution highlights actions or procedures which, if not performed correctly, may lead to personal injury or
incorrect functioning of the instrument.
!Note!
A note highlights actions or procedures which, if not performed correctly, may indirectly affect operation
or may lead to an instrument response which is not planned.

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•The on-site display can be rotated in 90° stages.
•Endress+Hauser offers a mounting bracket for installing on pipes or walls.
2.2 Measuring arrangement
2.2.1 Pressure measurement
•The PMD70, PMD75 and FMD78 are best suited for differential pressure measurement.
•Measuring arrangement for gases: Mount device above the measuring point.
•Measuring arrangement for liquids and steams: Mount device below tapping point.
•For differential pressure measurement in vapour, mount the condensate traps at the same level
as the same the tapping point and at the same distance from Deltabar S.
2.2.2 Level measurement
•All Deltabar S devices are best suited for level measurement in closed tanks.
•PMD70, PMD75, FMD76 and FMD77 are suitable to level measurement in open tanks.
Measuring arrangement level measurement in closed tanks and closed tanks with
superimposed vapour
•PMD70, PMD75: Mount device below the lower measuring connection. Always connect the
negative side above the maximum level via an impulse piping.
•FMD76, FMD77: Mount device direct on the tank. Always connect the negative side above
the maximum level via an impulse piping.
•FMD78 →ä6, Chap. 2.3 and Chap. 2.4.
•In the case of level measurement in closed tanks with superimposed vapour, a condensate trap
ensures pressure which remains constant on the minus side.
Measuring arrangement level measurement in open tanks
•PMD70, PMD75: Mount device below the lower measuring connection. The negative side is
open to atmosphere pressure.
•FMD76, FMD77: Mount device direct on the tank. The negative side is open to atmosphere
pressure.
2.2.3 Flow measurement
•The PMD70 and PMD75 are best suited for flow measurement.
•Measuring arrangement for gases: Mount device above the measuring point.
•Measuring arrangement for liquids and vapours: Mount device below tapping point.
•For flow measurement in vapours, mount the condensate traps at the same level as the same
the tapping point and at the same distance from Deltabar S.

Installation Deltabar S PROFIBUS PA
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2.3 Installation instructions for devices with diaphragm seals
(FMD78)
!Note!
•The diaphragm seal, together with the pressure transmitter, forms a closed, calibrated system,
which is filled through openings in the diaphragm seal and in the measurement system of the
pressure transmitter. These openings are sealed and must not be opened.
•Do not remove the protection of the process isolating diaphragm protection until shortly before
installation.
•When using a mounting bracket, sufficient strain relief must be ensured for the capillaries in
order to prevent the capillary bending down (bending radius ≥ 100 mm).
•Please note that the hydrostatic pressure of the liquid columns in the capillaries can cause zero
point shift. The zero point shift can be corrected. → See Page 13, 4.2.1 "Position of operating
elements", Page 14, Section 4.2.2 "Function of the operating elements" or Page 23, Section
5.1 "Position adjustment".
•Please note the application limits of the diaphragm seal filling oil as detailed in the Technical
Information for Deltabar S TI00382P, Section "Planning instructions for diaphragm seal
systems" or at "www.endress.com/applicator".
In order to obtain more precise measurement results and to avoid a defect in the device, mount
the capillaries as follows:
•vibration-free (in order to avoid additional pressure fluctuations)
•not in the vicinity of heating or cooling lines
•insulate if the ambient temperature is below ore above the reference temperature
•with a bending radius of ≥100 mm.
•The ambient temperature and length of both capillaries should be the same when using
two-sided diaphragm seal systems.
•Two diaphragm seals which are the same (e.g. with regard to diameter, material, etc.) should
always be used for the negative and positive side (standard delivery).
P01-FMD78xxx-11-xx-xx-xx-005
Fig. 1: Mounting Deltabar S, FMD78 with diaphragm seals and capillary, recommended mounting for vacuum
applications: mount pressure transmitter below the lowest diaphragm seal!
+ –
+
–
≥100 mm

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2.3.1 Vacuum application (FMD78)
For applications under vacuum, Endress+Hauser recommends mounting the pressure
transmitter underneath the lower diaphragm seal. A vacuum load of the diaphragm seal caused
by the presence of filling oil in the capillaries is hereby prevented.
When the pressure transmitter is mounted above the lower diaphragm seal, the maximum
height difference H1 in accordance with the illustration below on the left must not be exceeded.
The maximum height difference is dependent on the density of the filling oil and the smallest
ever pressure that is permitted to occur at the diaphragm seal on the positive side (empty
container), see illustration below, on the right.
P01-FMD7xxxx-11-xx-xx-xx-001
Fig. 2: Installation above the lower diaphragm
seal
P01-FMD78xxx-05-xx-xx-xx-016
Fig. 3: Diagram of maximum installation height above the lower
diaphragm seal for vacuum applications dependent on the
pressure at the diaphragm seal on the positive side
+ –
+
–
H1
–+
0.0
2.0
4.0
6.0
8.0
10.0
12.0
50 100 300 400 500 600 700 800 900 1000
200
Inert oil
High temperature
oil
Vegetable oil
Silicone oil
Pressure, diaphragm seal positive side [mbarabs]
Height difference H1[m]
Low temperature oil

Installation Deltabar S PROFIBUS PA
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2.4 Assembling and mounting the "separate housing" version
P01-xMD7xxxx-11-xx-xx-xx-011
Fig. 4: "Separate housing" version
1In the "separate housing" version, the sensor is supplied with process connection and cable fitted.
2Cable with connection jack
4Plug
5Locking screw
6Housing fitted with housing adapter, included
7Mounting bracket suitable for wall and pipe mounting, included
Assembly and mounting
1.Connect plug (item 4) into the corresponding connection jack of the cable (item 2).
2.Plug the cable into the housing adapter (item 6).
3.Tighten the locking screw (item 5).
4.Mount the housing on a wall or pipe using the mounting bracket (item 7). When mounting
on a pipe, tighten the nuts on the bracket uniformly with a torque of at least
5 Nm.
Mount the cable with a bending radius (r) ≥120 mm.
r³120 mm
1
2
4
5
6
7

Deltabar S PROFIBUS PA Wiring
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3 Wiring
#Warning!
•When using the measuring device in hazardous areas, installation must comply with the
corresponding national standards and regulations and the Safety Instructions or Installation or
Control Drawings.
3.1 Connecting the device
!Note!
•Devices with integrated overvoltage protection must be earthed.
•Protective circuits against reverse polarity, HF influences and overvoltage peaks are installed.
•The supply voltage must match the supply voltage on the nameplate.
•Switch off the supply voltage before connecting the device.
•Remove housing cover of the terminal compartment.
•Guide cable through the gland. Preferably use twisted, screened two-wire cable.
•Connect device in accordance with the following diagram.
•Screw down housing cover.
•Switch on supply voltage.
P01-xMx7xxxx-04-xx-xx-xx-008
Fig. 5: Electrical connection PROFIBUS PA → Observe also the following section.
For devices with 7/8" or M12 plug see Operating Instructions.
1Housing
2Internal earth terminal
3External earth terminal
4Supply voltage, for version in non-hazardous area = 9...32 V DC
5Devices with integrated overvoltage protection are labelled OVP (overvoltage protection) here.
➀
➁
➂
➃
➄
PA PA
PA PA

Wiring Deltabar S PROFIBUS PA
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3.2 Connecting the measuring unit
3.2.1 Supply voltage
•Version for non-hazardous area: 9...32 V DC
3.2.2 Current consumption
Up to HW Version 1.10:
11 mA ±1 mA, switch-on current corresponds to IEC 61158-2, Clause 21.
As of HW Version 02.00:
13 mA ±1 mA, switch-on current corresponds to IEC 61158-2, Clause 21.
As of Hardware Version 1.10, you will find a label in the device on the electronic insert.
3.2.3 Cable specification
•Use a twisted, screened two-wire cable, preferably cable type A.
•Terminals for wire cross-sections: 0.5...2.5 mm2
•Outer cable diameter: 5...9 mm
!Note!
For further information on the cable specifications, see Operating Instructions BA00034S
"Guidelines for planning and commissioning PROFIBUS DP/PA", PNO Guideline 2.092
"PROFIBUS PA User and Installation Guideline" and IEC 61158-2 (MBP).
3.2.4 Earthing and screening
Deltabar S must be earthed, for example by means of the external earth terminal.
Different earthing and screening installation methods are available for PROFIBUS PA networks
such as:
•Isolated installation (see also IEC 61158-2)
•Installation with multiple earthing
•Capacitive installation