Endress+Hauser deltabar S PMD 25 K User manual

deltabar S PMD 25 K
Differential
pressure transmitter
for use in Nuclear
Power Plants
Operating Instructions
BA 235P/00/en/05.07
Software version 7.1
71036535
Order Code XXXXXXXXXXXXXXXXXX
Ser.-No. XX X XXXX
Mat. 1.4571 / Al O / FPM
32 IP 65
P -1 ... 2 bar
U 10,5 ... 45 V DC
P 20 bar
4...20 mA Intensor
P Span 100 mbar
min
max
Patented
Hauser+Endress
The Power of Know How

Short Instructions
– –
++
ZS
IO
FMD230:LIC0001
Online
1>Group Select
2 PV 20mbar
HELP
Commissioning on-site
– Flow
– Level
– Differential pressure
Chapter 4
Additional functions through remote
operation with
– Commuwin II
– Universal HART Communicator DXR 275
Flow, level,
differential pressure?
Level
Chapter 6
– Damping
– Calibration
– Creep flow
suppression
– 4 mA threshold
– Output on alarm
– Locking/unlocking
the operation
– Information on
measuring point
Linearisation?
Empty/full
calibration
Flow
Chapter 7
Dry
calibration
Differential pressure
Chapter 5
– Damping
– 4 mA threshold
– Output on alarm
– Density correction
– Locking/unlocking
the operation
– Information on
measuring point
– Damping
– Calibration
– 4 mA threshold
– Output on alarm
– Locking/unlocking
the operation
– Information on
measuring point
table automatic
no
yes
Short Instructions Deltabar S
2 Endress+Hauser

Table of Contents
1Introduction ........... 6
1.1 Measuring system . . . . . . . . 7
2Installation ........... 8
2.1 Measuring system for differential
pressure measurement . . . . . . 8
2.2 Measuring system for flow
measurement . . . . . . . . . . 9
2.3 Measuring system for level
measurement . . . . . . . . . . 10
2.4 Electrical Connection . . . . . . . 12
3Operation ............14
3.1 On-site operation . . . . . . . . 14
3.2 Operation using the Universal HART
Communicator DXR 275 . . . . . . 15
3.3 Operation with Commuwin II . . . . 16
4Commissioning the Measuring Point ..17
4.1 Function of the manifolds . . . . . 17
4.2 Differential pressure measurement . 18
4.3 Level measurement . . . . . . . 22
4.4 Flow measurement with differential
pressure . . . . . . . . . . . . 27
5Differential Pressure Measurement ..31
5.1 Commisioning with the Universal HART
Communicator
DXR 275 or Commuwin II . . . . . 31
5.2 Locking/unlocking the matrix . . . . 35
5.3 Measuring point information . . . . 36
6Level Measurement ........37
6.1 Commissioning with the Universal
HART Communicator
DXR 275 or Commuwin II . . . . . 37
6.2 Calibration with reference pressure . 40
6.3 Dry calibration . . . . . . . . . 41
6.4 Linearisation . . . . . . . . . . 42
6.5 Locking/unlocking the matrix . . . . 45
6.6 Measuring point information . . . . 46
7Flow Measurement ........47
7.1 Commissioning with the Universal
HART Communicator
DXR 275 or Commuwin II . . . . . 47
7.2 Locking/unlocking the matrix . . . 53
7.3 Measuring point information . . . . 54
8Diagnosis and Trouble-Shooting ...55
8.1 Diagnosis of errors and warnings . . 55
8.2 Current simulation . . . . . . . . 58
8.3 Reset . . . . . . . . . . . . . 58
8.4 Editing limits . . . . . . . . . . 60
9Maintenance and Repair ......62
9.1 Repair . . . . . . . . . . . . 62
9.2 Mounting the display . . . . . . 63
9.3 Exchanging the sensor module and
electronics . . . . . . . . . . 64
9.4 Exchanging the transmitter . . . . 65
9.5 Recalibration . . . . . . . . . . 66
9.6 Replacement parts . . . . . . . 67
10 Technical Data ..........68
11 Operating Matrix .........74
11.1 Matrix Commuwin II (Software
version 7.1)
11.2 Matrix HART (Software version 7.0) . 75
11.3 Block diagram . . . . . . . . . 75
11.4 Description of parameters . . . . 76
Index . . . . . . . . . . . . . . . 81
Deltabar S Table of Contents
Endress+Hauser 3

Notes on Safety
Approved usage The Deltabar S is a differential pressure transmitter for measuring differential pressure,
flow and level.
Mounting,
commissioning
operation
The device has been designed to operate safely in accordance with current technical,
safety and EU standards. If installed incorrectly or used for applications for which it is
not intended, however, it is possible that application-related dangers may arise, e.g.
product overflow due to incorrect installation or calibration. For this reason, the instrument
must be installed, connected, operated and maintained according to the instructions in
this manual: personnel must be authorised and suitably qualified. The manual must have
been read and understood, and the instructions followed. Modifications and repairs to
the device are permissible only when they are expressly approved in the manual.
Explosion hazardous
areas If the device is to be installed in an explosion hazardous area, then all national regulations
must be observed. The instrument can be delivered with the certificates listed in the table
below. The certificate can be identified from the first letter of the order code stamped on
the nameplate.
•Ensure that all personnel are suitably qualified.
•All measurement and safety regulations which apply to the measuring point are to
be observed.
Code Certificate Explosion protection
K, S, 5, 7 Standard none
ENDRESS+HAUSER
DELTABAR
Order No. PMD 25 K–
Safety Conventions and Symbols Deltabar S
4 Endress+Hauser

Safety Conventions and Symbols
In order to highlight safety-relevant or alternative operating procedures in the manual,
the following conventions have been used, each indicated by a corresponding icon in
the margin.
Safety conventions
Explosion protection
Electrical symbols
Symbol Meaning
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.
Caution!
Caution highlights actions or procedures which, if not performed correctly, may lead to
personal injury or incorrect functioning of the instrument.
Warning!
A warning highlights actions or procedures which, if not performed correctly, will lead to
serious personal injury, a safety hazard or destruction of the instrument.
Device certified for use in explosion hazardous area
If the device has this symbol embossed on its name plate it can be installed in an explosion
hazardous area.
Explosion hazardous area
Symbol used in drawings to indicate explosion hazardous areas.
– Devices located in and wiring entering areas with the designation "explosion hazardous
areas" must conform with the stated type of protection.
Safe area (non-explosion hazardous area)
Symbol used in drawings to indicate, if necessary, non-explosion hazardous areas.
– Devices located in safe areas still require a certificate if their outputs run into explosion
hazardous areas.
Direct voltage
A terminal to which or from which a direct current or voltage may be applied or supplied.
Alternating voltage
A terminal to which or from which an alternating (sine-wave) current or voltage may be
applied or supplied.
Grounded terminal
A grounded terminal, which as far as the operator is concerned, is already grounded by
means of an earth grounding system.
Protective grounding (earth) terminal
A terminal which must be connected to earth ground prior to making any other connection to
the equipment.
Equipotential connection (earth bonding)
A connection made to the plant grounding system which may be of type e.g. neutral star or
equipotential line according to national or company practice.
Note!
Caution!
Warning!
Deltabar S Notes on Safety
Endress+Hauser 5

1 Introduction
Application The Deltabar S family of devices is used for the measurement of differential pressure, level
and flow in gases, vapours and liquids. They are used in all sectors of industry.
Operating principle
Metal sensor
The system pressure deflects the separating diaphragm and a fill fluid transmits the
pressure to a resistance bridge. The pressure dependent change in bridge output
voltage is measured and processed further.
Order Code XXXXXXXXXXXXXXXXXX
Ser.-No. XX X XXXX
Mat. 1.4571/ Al O / FPM
32 IP 65
P -1 ... 2 bar
U 10,5 ... 45 V DC
P20bar
4...20 mA Intensor
P Span 100 mbar
min
max
Patented
BA235Y03
Figure 1.1
Differential Pressure
Transmitter
Deltabar S PMP 25 K
À
Á
Â
Ã
Metal sensor
Deltabar S PMD 25 K
BA235Y04
Figure 1.2
Metal sensor
➀ Measuring element
➁ Overload diaphragm
➂ Fill fluid
➃ Separating diaphragm as
nap diaphragm extended
1 Introduction Deltabar S
6 Endress+Hauser

1.1 Measuring system
In the simplest case, the complete measuring system comprises
•a Deltabar S with 4…20 mA current output
•an optional four-character display for pressure
•power supply unit for 11.5 to 45 V DC
The HART protocol versions have a digital communication signal superposed on the
current signal which is used for remote calibration.
These transmitters have extended functions so that level or flow can also be measured.
The device is operated:
•via the Commuwin II operating program
•via the Universal HART Communicator DXR 275 handheld (HART protocol).
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
4...20mA
Test
123
+−
E
X
0 - 25 mbar
IO
FMD 230:LIC0001
Online
1 >Group Select
2 PV 20 mbar
HELP
Measuring system with
display
11.5…45 V
4…20 mA
Measuring system with handheld terminal
BA174Y05
Min. communication resistance 250 Ω
Fig. 1.3
Deltabar S measuring system
with display and/or handheld
terminal
Deltabar S 1 Introduction
Endress+Hauser 7

2 Installation
This chapter describes the measuring set-up of the Deltabar S and the electrical
connection.
2.1 Measuring system for differential pressure measurement
Note!
•General recommendations for laying pressure piping may be taken from
DIN 19210 "Methods for measurement of fluid flow; differential pressure piping for
flow measurement devices" or the appropriate national or international standards.
•Check that pressure piping installed outdoors is adequately insulated and/or heated.
Gases and vapours •Mount the Deltabar S above the
tapping point, so that condensation can
run back into the process piping.
•Use a three-way manifold for simple
mounting without interruption of the
process.
•Install the pressure piping with a
continuous fall of at least 10%.
Liquids •Mount the Deltabar S below the tapping
point, so that the pressure piping is
always filled with liquid and gas
bubbles can back into the process pipe.
•Use a three-way manifold for simple
mounting without interruption of the
process.
•In order to avoid build-up in dirty
liquids, it is recommended that traps
and drain cocks are used.
•Install the pressure piping with a
continuous fall of at least 10%.
+
0-25mbar
e.g. trap
and drain
cocks for
cleaning
e.g.
filter
e.g. 3-way
manifold
BA174Y30
shut-off
valves
Note!
0 - 25 mbar
+
e.g. 3-way
manifold
e.g.
filter
BA174Y73
shut-off
valves
2 Installation Deltabar S
8 Endress+Hauser

2.2 Measuring system for flow measurement
Note!
General recommendations for laying pressure piping may be taken from
DIN 19210 "Methods for measurement of fluid flow; differential pressure piping for flow
measurement devices" or the appropriate national or international standards.
Gases
•Mount the Deltabar S above the
tapping point, so that condensation can
run back into the process piping.
•Use a three-way manifold for simple
mounting without interruption of the
process.
•Install the pressure piping with a
continuous fall of at least 10%.
Vapours
•Mount the Deltabar S below the tapping
point.
•Mount condensate traps at the same
level as the tapping points.
•Fill the traps with liquid before
calibration.
•Use a three-way manifold for simple
mounting without interruption of the
process.
•Install the pressure piping with a
continuous fall of at least 10%.
Liquids
•Mount the Deltabar S below the tapping
point, so that the pressure piping is
always filled with liquid and gas
bubbles can back into the process pipe.
•Use a three-way manifold for simple
mounting without interruption of the
process.
•In order to avoid build-up in dirty
liquids, it is recommended that traps
and drain cocks are used.
•Install the pressure piping with a
continuous fall of at least 10%.
Note!
0 - 25 mbar
+
e.g. 3-way
manifold
orifice plate or
Pitot tube
BA174Y31
shut-off
valves
+
0 - 25 mbar
e.g. 3-way
manifold
BA174Y32
shut-off
valves
condensate traps
e.g. trap
and drain
cocks for
cleaning
+
0 - 25 mbar
e.g. 3-way
manifold
orifice plate
BA174Y33
shut-off valves
e.g. trap
and drain
cocks for
cleaning
Deltabar S 2 Installation
Endress+Hauser 9

2.3 Measuring system for level measurement
Note!
General recommendations for laying pressure piping may be taken from
DIN 19210 "Methods for measurement of fluid flow; differential pressure piping for flow
measurement devices" or the appropriate national or international standards.
Open tank
PMD 25 K
•Mount the Deltabar S below the lower
tapping, so that the pressure piping is
always filled with liquid.
•The negative side is open to
atmosphere pressure.
•A trap prevents the build up of dirt in
the pressure piping.
•Install the pressure piping with a
continuous fall of at least 10%.
Closed tank
PMD 25 K
•Mount the Deltabar S below the lower
tapping so that the pressure piping is
always filled with liquid.
•The negative side must be above the
maximum level to be measured.
•Traps prevent the build up of dirt in the
pressure piping.
•Use a three-way manifold for simple
mounting without interrupting the
process.
•Install the pressure piping with a
continuous fall of at least 10%.
Closed tank with
steaming liquid
PMD 25 K
•Mount the Deltabar S below the lower
tapping, so that the pressure piping is
always filled with liquid.
•The tapping for the negative side must
be above the maximum level to be
measured. The condensate trap
ensures a constant pressure.
•Traps prevent the build up of dirt in the
pressure piping.
•Use a three-way manifold for simple
mounting without interruption of the
process.
•Install the pressure piping with a
continuous fall of at least 10%.
+
0 - 25 mbar
patm
negative side patm
BA174Y35
trap and
vent valve
min.
Note!
+
0 - 25 mbar
max.
BA174Y38
trap and
drain cock
min.
trap and
drain cock
3-way
manifold
shut-off
valve
+
0 - 25 mbar
max.
BA174Y40
trap and
drain cock
min.
condensate trap
3-way
manifold
trap and
drain cock
horizontal run shut-off
valve
2 Installation Deltabar S
10 Endress+Hauser

Wall and pipe mounting
Align housingAfter the Deltabar S has been mounted, the housing can be aligned such that:
•the terminal compartment is easily accessible,
•the display can be easily read,
•the cable gland and the cover of the Z/S keys are protected from water.
86.5 ~273
ø6 125
100
ø60.3
108
74
ZS
ZS
~ 174
66.5
145
45
~ 253
ZS
+–
BA235Y05
Wall-mounting Pipe-mounting
Z/S key cover points
to the side
Pg points
downwards
Observe when mounting
Figure 2.1
Wall and pipe mounting
Caution!
Mount the housing such that:
– The cable gland always points
downwards so that
condensation on the
connecting cable runs off and
not into the housing.
– The Z/S key cover points to the
side so that it’s protected from
water.
0 - 25 mbar
0 - 25 mbar
max. 330°
+–
BA235Y06
loosen locking screw
tighten locking screw
Figure 2.2
Align housing
Deltabar S 2 Installation
Endress+Hauser 11

2.4 Electrical Connection
Screen twisted pairs are recommended for the instrumentation cable.
Supply voltage: 11.5...45 V DC
Internal protection circuits protect against reverse polartity, HF interference an
overvoltage peaks.
A test signal can be measured using terminals 1 and 3 without interrupting the process
measurement.
Cable connection •Unscrew the connection compartment lid
•Thread cable through the cable entry
•Connect cable cores according to the connection diagram
•Screw lid down
+
123
+
Test
0003
4…20 mA
Test
4...20 mA
Rimax. 7 Ω
11.5...45 V DC
BA174Y45
Figure 2.3
Electrical connection Deltabar S
left:
For all versions with 4...20mA
right:
Harting plug pin assignment
Deltabar S
4…20 mA
Han7D
12
3
8
7
6
54
–
+
123
BU BN GN-YE
3
BA235Y17
PE connection
(green yellow)
– (brown)
+ (blue)
BU: blue
BN: brown
GN-YE: green yellow
1560
U/V
R/Ω
0
1000
500
11.5 30 45
Ι
max
21…22.5 mA
20
BA235Y07
Field of operation Deltabar S PMD 25K
Figure 2.4
Load diagram
2 Installation Deltabar S
12 Endress+Hauser

Connecting the
Commubox FXA 191 for
operating via
Commuwin II
The Commubox FXA 191 connects Smart transmitters with a HART protocol to the
RS 232 C serial interface of a personal computer. This enables the transmitter to be
remotely operated with the Endress+Hauser Commuwin II operating program.
The Commubox FXA 191 is used for intrinsically safe signal circuits.
Connection of
handheld terminals
•Do not change batteries of the handheld terminal inexplosion hazardous
areas.
•For correct transmission of the communication signal a there must be a total
minimum resistance of 250 Ωbetween the connecting points and the power supply.
4…20 mA
4...20 mA Test
123
+
PC with Commuwin II
operating program
Commubox
FXA191
Deltabar S
minimum line
resistance 250 Ω
BA235Y18
Figure 2.5
The Commubox can be
connected anywhere along the
4…20 mA cable.
4...20 mA
min. 250 Ω
250 Ω
min.
4...20 mA Test
123
+
IO
FMD 230:LIC0001
Online
1 >Group Select
2 PV 20 mbar
HELP
IO
FMD 230:LIC0001
Online
1 >Group Select
2 PV 20 mbar
HELP
any follow-up
device
BA235Y19
Figure 2.6
Connection of the handheld
terminal for remote operation
Deltabar S 2 Installation
Endress+Hauser 13

3 Operation
3.1 On-site operation
Operating elements Four keys, which allow the lower range-value and upper range-value to be set, are
available for on-site operation. The key functions are listed in the table below.
Display module The local display module (optional) has two display modes:
•Display during measurement: standard operational mode
•Display during calibration: is activated by pressing one of the keys +Z, –Z, +S or –S
once. Automatically returns to measurement mode after 2 s.
Key functions
+Z increases the lower range-value (zero) by +1 digit*
–Z decreases the lower range-value (zero) by –1 digit*
+S increases the upper range-value (span) by +1 digit*
–S decreases the upper range-value (span) by –1 digit*
Key combinations (press keys simultaneously)
Keys Function
Calibration
+Z and –Z the acting pressure is taken as lower range-value (4 mA)
+S and –S the acting pressure is taken as upper range-value (20 mA)
Bias pressure
2 times +Z and +S the acting pressure is taken as bias pressure**
1 time +Z and +S the current bias pressure** is displayed
2 times –Z and –S the current bias pressure** is deleted
Secure measuring point by locking/unlocking
+Z and –S lock measuring point
–Z and +S unlock measuring point
The step-by-step commissioning of the measuring point with local operation is described
in chapter 4.
Table 3.1
Key functions
* Note: Pressing once activates
the display, only by pressing
again does the display begin to
count. When the key is pressed,
the value begins to run slowly at
first, then faster and faster.
** If the display indicates process
pressure zero not as zero after
calibrating the lower range-value
(depending on position), you can
correct the display value to zero
by adopting a bias pressure. The
position calibration using a bias
pressure does not affect the
current output.
-0.1...0.3 bar
-0.5...1.5 bar g
-0.5...1.5 bar g
– –
++
ZS
– –
++
ZS
ZS
+Z
-Z
+S
-S
z
➂
➀
➁
➅
➃
➄
keys for on-site operation
BA174Y06
display module
➆
Display in normal operation
Display in calibration mode
Figure 3.1
User interface of the Deltabar S
with optional display
Display in normal operation
➀ 4-figure display of
measured value and
entered parameters
➁ Bar graph of measured
value
➂ Lower range-value (zero)
➃ Upper range-value (span)
➄ Nominal measuring range
In addition for
display in calibration mode
➅ display of the calibration
point (Z=Zero, S=Span)
➆ set measurement range
within the limits of the
measuring cell
3 Operation Deltabar S
14 Endress+Hauser

3.2 Operation using the Universal HART Communicator DXR 275
Connecting the handheld terminal is described in chapter 2.4 Connection on page 13.
Commissioning the tapping point with the Universal HART Communicator DXR 275 is
described in chapters 5 to 7.
IO
FMD 230:LIC0001
Online
1 >Group Select
2 PV 20 mbar
HELP
LC display with
menu text
Function keys
Keys for menu
selection
Keys for
parameter entry
BA174Y08
If the HART protocol is used, the device is
operated via a menu which is derived from
this matrix, see manual for handheld
terminal.
F1 F4F2 F3
FMD 230: LIC0001
Online
2PV 20mbar
HELP
1->Group Select
F1 F4F2 F3
FMD 230: LIC0001
2 Additional Functions
3 Transmitter Info
4 Linearization
5 User Information
Group Select
1->Calibration
HOME
F1 F4F2 F3
FMD 230: LIC0001
3 Transmitter Info
4 Linearization
5 User Information
Group Select
1->Calibration
2 Additional Functions
HOME
BA174Y09
•The menu "Group Select" calls up the
matrix.
•The rows are represented by the menu
headings.
•The parameters are set using
submenus.
Deltabar S 3 Operation
Endress+Hauser 15

3.3 Operation with Commuwin II
When operating the Commuwin II display an operating program (possible with
Version 2.07.01 and higher), the Deltabar S is set and operated either using
•Matrix mode or
•Graphic mode.
The appropriate server (e.g. HART or ZA 672) must therefore be activated. A description
of the operating program Commuwin II is to be found in Operating Instructions BA 124F.
Matrix mode
(Menu Device) You can access the extended functions of the Deltabar S, such as level measurement,
using the "Device/Parameter Matrix" menu.
•Each row is allocated to a particular function,
•Each field sets or displays one parameter.
Enter the setting parameters in the appropriate fields and confirm by pressing ↵.
Graphic mode
(Menu Device) Commuwin II offers graphic examples of certain configuration procedures which you can
access from the "Device/Graphics" menu. There you can directly modify parameters and
confirm by pressing ↵.
BA174E01
Figure 3.2
Menu “Device/Parameter matrix”
in Commuwin II
BA174E02
Figure 3.3
Menu “Device/ Graphics”
in Commuwin II
3 Operation Deltabar S
16 Endress+Hauser

4 Commissioning the Measuring Point
Deltabar S PMD 25 K: The chapter describes how measuring points equipped with
three-way manifolds are operated. Since the valves are usually operated manually, the
position calibration (bias pressure) is made on-site using the keys.
All operations can be made over the keyboard, the handheld terminals or the
Commuwin II operating program. These are described in the following chapters along
with extended functions such as creep flow suppression, linearisation and scaling the
display depending on the application.
4.1 Function of the manifolds
Three-way manifold
The three-way manifold comprises two inlet
valves and an equalising valve.
•Inlet valves (2 and 4):
Cut off the transformer from the
pressure piping.
•Equalising valve (3):
Equalises the pressure on the positive
and negative sides.
It is often necessary to shut-off the pressure
piping from the tapping points by using
shut-off valves (A and B).
Dirty liquidsDrain cocks or blow-off valves are usually required in dirty liquids which tend to build-up.
•Drain cocks (1 and 5):
Drain or blow off deposits in the
pressure piping
•Inlet valves (2 and 4):
Cut off the transformer from the
pressure piping.
•Equalising valve (3):
Equalises the pressure on the positive
and negative sides.
It is often necessary to shut-off the pressure
piping from the tapping points by using
shut-off valves (A and B).
+
2
AB
67
4
3
BA174Y28
inlet valve inlet valve
equalising valve
shut-off valve shut-off valve
vent valves
on transmitter
PMD 25K
e.g. 3-way
manifold
preferred installation for gases
+
2
15
AB
67
4
3
+–
shut-off
valve shut-off valve
inlet
valve inlet valve drain
cock
drain
cock
equalising
valve BA174Y70
vent valves
on transmitter
PMD 25 K
preferred installation for fluids
e.g.
3-way
manifold
Deltabar S 4 Commissioning the Measuring Point
Endress+Hauser 17

4.2 Differential pressure measurement
This chapter contains the following information:
•General description of operation with keys
– Setting lower and upper range-values: calibration without reference pressure
– Adjusting lower and upper range-values: adjustment with reference pressure
– Adjusting lower and upper range-values: reference pressure is near lower and
upper range-values
– Position calibration (display only)
•Commissioning the measuring point in steps
•Select "linear" curve with rotary switch
•Set damping (integration time)
Furtherinformationis obtained over the operatingmatrix. Operating over the handheld
terminals or operating matrix is described in chapter 5.
Lower and upper
range-values:
calibration without
reference pressure
The desired lower and upper range-values are set using keys.
# Key Entry
1Set lower range-value:
Press +Z or –Z several times.
(As the span remains constant, the
upper range-value is shifted to the
same extent as the lower
range-value.)
2Set upper range-value:
Press +S or –S several times
(The lower range-value is unaffected.)
Lower and upper
range-values:
calibration with
reference pressure
A reference pressure which corresponds exactly to the desired lower and upper
range-values is available.
# Key Entry
1 Exact pressure for lower range-value is acting
2 Press +Z and –Z simultaneously once.
(As the span remains constant, the
upper range-value is shifted to the
same extent as the lower
range-value.)
3 Exact pressure for upper range-value is acting
4 Press +S or –S simultaneously once.
(The lower range-value is unaffected.)
––
++
ZS
––
++
ZS
––
++
ZS
––
++
ZS
––
++
ZS
––
++
ZS
––
++
ZS
––
++
ZS
BA174Y16
4 Commissioning the Measuring Point Deltabar S
18 Endress+Hauser

Lower and upper
range-values:
setting using reference
pressure for devices
without display
On devices without a display, you can set the lower and upper range-values with the
reference pressure and an ammeter. The reference pressure should be near the lower
and upper range-values. The associated current value must be calculated using the
following equation:
I – Current value
p – Reference pressure is near lower
or upper range-values
pLRV – Pressure lower range-value
pURV – Pressure upper range-value
# Key Entry
1 Example: Set a pressure transmitter as
follows:
Lower range-value pLRV = 0 bar and
Upper range-value pURV = 1.0 bar.
There are two reference pressures available:
Near to lower range-value p = 0.1 bar
Near to upper range-value p = 0.9 bar
2 Enter pressure near the lower range-value
e.g. 0.1 bar
3 Calculate the associated current value for the
applied reference pressure,
e.g. 0.1 bar equals 5.4 mA
4 Set the current value 5.4 mA by
pressing the +Z or –Z keys several
times
5 Enter pressure near the upper range-value
e.g. 0.9 bar
6 Calculate the associated current value for the
applied reference pressure,
e.g. 0.9 bar equals 18.4 mA
7 Set the current value 18.4 mA by
pressing the +S or –S keys several
times
Position calibration –
display only
(bias pressure)
If the display does not show zero after zero point adjustment (due to mounting position),
then you can correct the display value to zero by adopting the bias pressure acting
(depending on mounting position). The position calibration using a bias pressure does
not affect the current output.
# Key Entry
1Correct display:
Press +Z and +S simultaneously
twice. The bias pressure acting is
adopted.
2Display bias pressure:
Press +Z and +S simultaneously
once. The bias pressure entered is
shown briefly.
3Delete bias pressure:
Press –Z and –S simultaneously
twice. The bias pressure entered is
deleted.
ImA
mA p pLRV
pURV pLRV
=+
•-
-
4
16 ( )
()
––
++
ZS
––
++
ZS
––
++
ZS
––
++
ZS
––
++
+
ZS
––
++
+
ZS
––
++
+
ZS
+
123
+
Test
0003
4…20 mA
BA174Y45
Test
4...20 mA
Rimax. 7 Ω
11.5...45 V DC
Deltabar S 4 Commissioning the Measuring Point
Endress+Hauser 19

Commissioning
the measuring point
in steps
Before using the Deltabar S for measuring differential pressure, clean the pressure piping
and fill the device with medium. The span (upper range-value – lower range-value) is
either preset (see pages 18 and 19), or is calibrated during commissioning.
# Valve Significance
1 Close 3
2 Fill measuring system with medium
Open A, B, 2, 4 Let in medium
3 Clean pressure pipes if required*
– for gases with compressed air
– for liquids by washing out
Close 2 and 4 Shut off transmitter
Open 1 and 5* Blow out/wash out
pressure piping
Close 1 and 5* Close valves after
cleaning
4 Let air out of transmitter
Open 2 and 4 Let in medium
Close 4 Close negative side
Open 3 Connect positive and
negative side
Briefly open 6 and 7
then close again
Fill transmitter with
medium and let out air
5Set the measuring point in operation
Close 3 Shut off positive from
negative side
Open 4 Connect negative side
Now: 1*, 3, 5*, 6 and 7 are closed
2 and 4 are open
A and B are open (if present)
6Set lower range-value to initial pressure
and display to zero
– Filters: Shut off flow or
enter minimum flow for
clean filters
– Tanks or pipe pressure:
enter initial pressure
Lower range-value:
Press +Z and –Z
simultaneously once
If appropriate correct
the display.:
Press +Z and +S
simultaneously twice
7Set upper range-value to final pressure
– Filters: Shut off or allow minimum flow for
draggled filters
– Tanks or pipe pressure:
enter final pressure
Upper range-value:
Press +S and –S
simultaneously once
6 Select curve and damping
see page 21
7 Measuring point is ready for operation
* For arrangements with five valves only
Caution!
When opening and closing valves to the
process, care must be taken to avoid
overheating or one-sided overloading of
the measuring cell. If the measuring range
is adjusted, the output signal may not lead
to impermissible jumps in the control loop.
––
++
ZS
––
++
+
ZS
––
++
ZS
+
2
AB
67
4
3
BA174Y28
inlet valve inlet valve
equalising valve
shut-off valve shut-off valve
vent valves on
transmitter
PMD 25 K
preferred installation for gases
e.g. 3-way
manifold
+
2
15
AB
67
4
3
+–
shut-off
valve shut-off valve
inlet
valve inlet
valve drain
cock
drain
cock
equalising
valve BA174Y70
vent valves on
transmitter
PMD 25 K
preferred installation for fluids
trap trap
e.g.
3-way
manifold
Caution!
4 Commissioning the Measuring Point Deltabar S
20 Endress+Hauser