WIKA DPT-10 User Manual
Differential pressure transmitter DPT10 - metal mea-
suring diaphragm
Profibus PA
Document ID:
37245
Contents
Contents
1 About this document
1.1 Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Target group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 Symbolism used . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 For your safety
2.1 Authorised personnel . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Appropriate use . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Warning about misuse . . . . . . . . . . . . . . . . . . . . . . .
2.4 General safety instructions . . . . . . . . . . . . . . . . . . . .
2.5 Safety label on the instrument . . . . . . . . . . . . . . . . . .
2.6 CE conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.7 Fulfillment of NAMUR recommendations . . . . . . . . . .
2.8 Safety instructions for Ex areas . . . . . . . . . . . . . . . . .
2.9 Safety instructions for oxygen applications . . . . . . . . .
3 Product description
3.1 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Principle of operation . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Packaging, transport and storage . . . . . . . . . . . . . . .
4 Mounting
4.1 General instructions . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 Special application conditions . . . . . . . . . . . . . . . . . .
4.3 Measurement setup flow . . . . . . . . . . . . . . . . . . . . . .
4.4 Measurement setup level . . . . . . . . . . . . . . . . . . . . .
4.5 Measurement setup density and interface . . . . . . . . .
4.6 Measurement setup differential pressure . . . . . . . . . .
4.7 Mounting arrangement and connection valve block . . .
4.8 External housing. . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.9 Mounting control. . . . . . . . . . . . . . . . . . . . . . . . . . . .
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5 Connecting to power supply
5.1 Preparing the connection . . . . . . . . . . . . . . . . . . . . .
5.2 Connection procedure. . . . . . . . . . . . . . . . . . . . . . . .
5.3 Single chamber housing . . . . . . . . . . . . . . . . . . . . . .
5.4 Double chamber housing . . . . . . . . . . . . . . . . . . . . .
5.5 Double chamber housing Ex d . . . . . . . . . . . . . . . . .
5.6 Version IP 66/IP 68, 1 bar . . . . . . . . . . . . . . . . . . . . .
5.7 External housing with version IP 68 . . . . . . . . . . . . . .
5.8 Switch on phase. . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Adjustment with the indicating and adjustment module
6.1 Short description . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.2 Insert indicating and adjustment module. . . . . . . . . . .
6.3 Adjustment system . . . . . . . . . . . . . . . . . . . . . . . . . .
6.4 Parameter description . . . . . . . . . . . . . . . . . . . . . . . .
6.5 Menu schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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37245-EN-100120
Contents
6.6 Menu schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.7 Saving the parameter adjustment data . . . . . . . . . . . .
7 Setup with PDM
7.1 Parameter adjustment with PDM . . . . . . . . . . . . . . . .
8 Set up
8.1 Select the mode . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.2 Flow measurement . . . . . . . . . . . . . . . . . . . . . . . . . .
8.3 Level measurement . . . . . . . . . . . . . . . . . . . . . . . . .
8.4 Density and interface measurement . . . . . . . . . . . . . .
8.5 Differential pressure measurement. . . . . . . . . . . . . . .
9 Maintenance and fault rectification
9.1 Maintain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2 Rectify malfunctions . . . . . . . . . . . . . . . . . . . . . . . . .
9.3 Instrument repair . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 Dismounting
10.1 Dismounting steps . . . . . . . . . . . . . . . . . . . . . . . . . .
10.2 Dispose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11 Supplement
11.1 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11.2 Information on Profibus PA . . . . . . . . . . . . . . . . . . . .
11.3 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Supplementary documentation
Information:
Supplementary documents appropriate to the ordered version come
with the delivery. You can find them listed in chapter "Product
description".
Instructions manuals for accessories and replacement parts
Tip:
To ensure reliable setup and operation of your instrument, we offer
accessories and replacement parts. The corresponding instructions
manuals are:
l 31550 - External indicating and adjustment unit
37245-EN-100120
Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA 3
1 About this document
1 About this document
1.1 Function
This operating instructions manual provides all the information you
need for mounting, connection and setup as well as important
instructions for maintenance and fault rectification. Please read this
information before putting t he instrument into operation and keep this
manual accessible in the immediate vicinity of the device.
1.2 Target group
This operating instructions manual is directed to trained qualified
personnel. The contents of this manual should be made available to
these personnel and put into practice by them.
1.3 Symbolism used
Information, tip, note
This symbol indicates helpful additional information.
Caution: If this warning is ignored, faults or malfunctions can
result.
Warning: If this warning is ignored, injury to persons and/or serious
damage to the instrument can result.
Danger: If this warning is ignored, serious injury to persons and/or
destruction of the instrument can result.
Ex applications
This symbol indicates special instructions for Ex applications.
l List
The dot set in front indicates a list with no implied sequence.
à Action
This arrow indicates a single action.
1 Sequence
Numbers set in front indicate successive steps in a procedure.
4 Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA
37245-EN-100120
2 For your safety
2 For your safety
2.1 Authorised personnel
Mount and set up the pressure transmitter only if you know the
applicable national regulations and have the appropriate qualification.
You must be aquainted with the regulations and instructions for
hazardous areas, measurement and control technology as well as
electrical circuits because the pressure transmitter is "electrical
equipment" according to EN 50178. Depending on the application
conditions, it is necessary that you have appropriate knowledge, e.g.
concerning corrosive products or high pressure.
2.2 Appropriate use
DPT10 is a differential pressure transmitter for measurement of flow,
level, differential pressure, density and interface.
You can find detailed information on the application range in chapter
"Product description".
Operational reliability is ensured only if the instrument is properly used
according to the specifications in the operating instructions manual as
well as possible supplementary instructions.
For safety and warranty reasons, any invasive work on the device
beyond that described in the operating instructions manual may be
carried out only by personnel authorised by the manufacturer. Arbitrary
conversions or modifications are explicitly forbidden.
2.3 Warning about misuse
Inappropriate or incorrect use of the instrument can give rise to
application-specific hazards, e.g. vessel overfill or damage to system
components through incorrect mounting or adjustment.
2.4 General safety instructions
This is a high-tech instrument requiring the strict observance of
standard regulations and guidelines. The user must take note of the
safety instructions in this operating instructions manual, the countryspecific installation standards as well as all prevailing safety
regulations and accident prevention rules.
The instrument must only be operated in a technically flawless and
reliable condition. The operator is responsible for trouble-free
operation of the instrument.
During the entire duration of use, the user is obliged to determine the
compliance of the required occupational safety measures with the
current valid rules and regulations and also take note of new
regulations.
37245-EN-100120
Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA 5
2 For your safety
2.5 Safety label on the instrument
The safety approval markings and safety tips on the device must be
observed.
2.6 CE conformity
This device fulfills the legal requirements of the applicable EC
guidelines. By attaching the CE mark, we provide confirmation of
successful testing.
2.7 Fulfillment of NAMUR recommendations
The device fulfills the requirements of the applicable NAMUR
recommendations.
2.8 Safety instructions for Ex areas
Please note the Ex-specific safety information for installation and
operation in Ex areas. These safety instructions are part of the
operating instructions manual and come with the Ex-approved
instruments.
2.9 Safety instructions for oxygen applications
For instruments in oxygen applications the special instructions in
chapters "Storage and transport", "Mounting" as well as "Technical
data" under "Process conditions"must be noted. Furthermore the valid
national regulations, implementation instructions and memorandums
of the BG (professional assoc.) must be noted.
6 Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA
37245-EN-100120
3 Product description
+ –
1
2
3
3.1 Configuration
3 Product description
Scope of delivery
Constituents
The scope of delivery encompasses:
l DPT10 differential pressure transmitter
l Depending on the version ventilation valves and/or closing screws
l Optional accessory
l Documentation
- this operating instructions manual
- Test certificate for pressure transmitters
- Operating instructions manual "Indicating and adjustment
module" (optional)
- Ex-specific "Safety instructions" (with Ex-versions)
- if necessary, further certificates
The following illustration shows the components of DPT10:
Fig. 1: DPT10 in basic version
1 Housing cover, optionally with integrated indicating and adjustment module
2 Housing with electronics
3 Process components with measuring cell
The components are available in different versions.
Type label
37245-EN-100120
Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA 7
The type label contains the most important data for identification and
use of the instrument:
l Instrument type
l Article number instrument
l Ex approval
l Technical data: Measuring range, process pressure, process
temperature, signal output, voltage supply, protection, protection
class
l Order number, serial number instrument
QQ
p
1
p
1
p
2
p
2
Q ~
∆p
Q ~
∆p
++
––
1 2
3 Product description
l Hardware and software version
l Article numbers, documentation
3.2 Principle of operation
Application area
DPT10 is a differential pressure transmitter for measurement of flow,
level, differential pressure, density and interface. Measured products
are gases, vapours and liquids.
Flow measurement
Fig. 2: Flow measurement with DPT10 and effective pressure transmitter, Q =
flow, Δp = differential pressure, Δp = p
1 Orifice
2 Dynamic pressure probe
- p
1
2
8 Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA
37245-EN-100120
1
2
3
h =
∆p
ρ g
+
+
–
–
h
+ –
+
2
1
3 Product description
Level measurement
Fig. 3: Level measurement with DPT10. Δp = differential pressure, ρ = density of
the medium, g = acceleration of gravity
1 Basic version with effective pressure lines
2 Version with flange isolating diaphragm
3 Version with capillaries and cell isolating diaphragms
Differential pressure measurement
Fig. 4: Differential pressure measurement with DPT10
1 Filter
2 DPT10
37245-EN-100120
Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA 9
=
∆p
h
g
+
–
h
1
+
–
h
2
3
3 Product description
Density measurement
Fig. 5: Density measurement with DPT10, h = defined mounting distance, Δp =
differential pressure, ρ = density of the medium, g = acceleration of gravity
1 DPT10
Interface measurement
Fig. 6: Interface measurement with DPT10
1 DPT10
2 Liquid with highest density
3 Liquid with lowest density
Functional principle
A metallic measuring cell is used as sensor element. The process
pressures are transmitted via separating diaphragms and filling oils to
the resistance measuring bridge (semi-conductor technology). The
differential-pressure dependent change of the bridge voltage is
measured, further processed and converted into a corresponding
output signal.
10 Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA
37245-EN-100120
1
2
3
4
5
1
p
2
p
1
p
2
p
1
2
3
4
3 Product description
The configuration of the measuring cells differs depending on the
measuring range:
Fig. 7: Metallic measuring cell 10 mbar and 30 mbar - p1and p2process
pressures
1 Measuring element
2 Silicone diaphragm
3 Separating diaphragm
4 Filling oil
5 Integrated overvoltage arrester
Fig. 8: Metallic measuring cell from 100 mbar - p1and p2process pressures
1 Measuring element
2 Overload diaphragm/Middle diaphragm
3 Filling oil
4 Separating diaphragm
Power supply and bus
communication
Power supply via the Profibus DP/PA segment coupler. A two-wire
cable according to Profibus specification serves as carrier of both
power and digital data transmission for multiple sensors. The
instrument profile of DPT10 corresponds to profile specification
version 3.0.
GSD/EDD
37245-EN-100120
Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA 11
The GSD (instrument master files) and bitmap files necessary for
planning your Profibus DP (PA) communication network are available
from the download section on the WIKA homepage
under "Service". There you can also find the appropriate certificates. In
www.wika.com
3 Product description
a PDM environment, an EDD (Electronic Device Description) is also
required to enable the full range of sensor functions (also available as
a download). A CD with the appropriate files can be ordered via e-mail
or by phone from one of the WIKA agencies.
The backlight of the indicating and adjustment module is powered by
the sensor. Prerequisite is a certain level of operating voltage.
The data for power supply are specified in chapter "Technical data".
3.3 Operation
DPT10 can be adjusted with different adjustment media:
l with indicating and adjustment module
l the Simatic adjustment program PDM
The entered parameters are generally saved in DPT10, optionally also
in the indicating/adjustment module.
3.4 Packaging, transport and storage
Packaging
Transport
Transport inspection
Storage
Your instrument was protected by packaging during transport. Its
capacity to handle normal loads during transport is assured by a test
according to DIN EN 24180.
The packaging of standard instruments consists of environmentfriendly, recyclable cardboard. For special versions, PE foam or PE foil
is also us ed. Dispose of the packaging material via specialised
recycling companies.
Caution:
Instruments for oxygen applications are sealed in PE foil and provided
with a label "Oxygen! Use no Oil". Remove this foil just before
mounting the instrument! See instruction under "Mounting".
Transport must be carried out under consideration of the notes on the
transport packaging. Nonobservance of these instructions can cause
damage to the device.
The delivery must be checked for completeness and possible transit
damage immediately at receipt. Ascertained transit damage or
concealed defects must be appropriately dealt with.
Up to the time of installation, the packages must be left closed and
stored according to the orientation and storage markings on the
outside.
Unless otherwise indicated, the packages must be stored only under
the following conditions:
l Not in the open
l Dry and dust free
37245-EN-100120
12 Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA
Storage and transport
temperature
3 Product description
l Not exposed to corrosive media
l Protected against solar radiation
l Avoiding mechanical shock and vibration
l Storage and transport temperature see chapter "Supplement -
Technical data - Ambient conditions"
l Relative humidity 20 … 85 %
37245-EN-100120
Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA 13
2
1
1
4 Mounting
4 Mounting
4.1 General instructions
Suitability for the process conditions
Mounting position
Moisture
Ventilation
Make sure that all parts of the instrument exposed to the process, in
particular the sensor element, process seal and process fitting, are
suitable for the existing process conditions. These include above all
the process pressure, process temperature as well as the chemical
properties of the medium.
You can find the specifications in chapter "Technical data" or on the
type label.
Select an installation position you can easily reach for mounting and
connecting as well as later retrofitting of an indicating and adjustment
module. The housing can be rotated by 330° without the use of any
tools. You can also install the indicating and adjustment module in four
different positions (each displaced by 90°).
Use the recommended cables (see chapter "Connecting to power
supply") and tighten the cable gland.
You can give your DPT10 additional protection against moisture
penetration by leading the connection cable downward in front of the
cable entry. Rain and condensation water can thus drain off. This
applies mainly to outdoor mounting as well as installation in areas
where high humidity is expected (e.g. through cleaning processes) or
on cooled or heated vessels.
The ventilation for the electronics housing is realised via a filter
element in the vicinity of the cable glands.
Fig. 9: Position of the filter element with single and double chamber housing
1 Filter element for ventilation of the electronics housing
2 Blind stopper
Information:
Make sure that the filter element is always free of buildup during
operation. A high-pressure cleaner must not be used for cleaning.
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4 Mounting
Effective pressure lines
Vibrations
Temperature limits
Oxygen applications
You find general recommendations for wiring of effective pressure
lines in DIN 19210 "Effective pressure lines for flow systems" or the
corresponding national or international standards. When wiring
effective pressure lines outdoors, keep in mind to use a suitable
antifreeze, e.g. by using tube heat tracing. Wire effective pressure
lines with a monotonic decrease of at least 10 %.
In case of strong vibrations at the application position, the instrument
version with external electronics should be used.
Higher process temperatures often mean also higher ambient
temperatures for electronics and connection cable. Make sure that the
upper temperature limits stated in chapter "Technical data" for the
environment of the electronics housing and connection cable are not
exceeded.
4.2 Special application conditions
Oxygen and other gases can be explosive with oils, grease and
plastics so that the following provisions must also be taken:
l All components of the plant, such as e.g. measuring instruments
must be cleaning according to the requirements of BAM
(DIN 19247)
l Depending on the materials used, a certain max. temperature and
pressure must not be exceeded in oxygen applications
Danger:
Instruments for oxygen applications must be unpacked just before
mounting. After removing the protective cover of the pr ocess fitting, the
label "O₂" will be visible on the process fitting. Penetration of oil,
grease and dirt should be avoided. Danger of explosion!
Pure gas applications
We also offer oil and grease free instruments for special applications
such as e.g. ultra-pure gas. There are no special restrictions with
respect to the process conditions.
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Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA 15
+
–
1
2
4
3
4 Mounting
4.3 Measurement setup flow
In gases
In vapours
à Mount DPT10 above the measurement loop so that condensate
can drain off in the process cable.
Fig. 10: Measurement setup, flow measurement in gases
1 DPT10
2 3-fold valve block
3 Blocking valves
4 Orifice or impact pressure probe
à Mount DPT10 below the measurement loop
à Mount condensate vessels at the same height with the discharge
socket and at the same distance to DPT10
à For measurements in products with solid content such as e.g. dirty
liquids, the installation of separators and drain valves is
recommended to enable collection and removal of debris and
sediment.
à Fill the effective pressure lines to the height of the condensate
vessels before setup
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+
–
1
2
3 3
5 5
6 6
7
4
Fig. 11: Measurement setup, flow measurement in vapours
1 Condensate vessels
2 Orifice or impact pressure probe
3 Blocking valves
4 DPT10
5 Precipitator
6 Drain valves
7 3-fold valve block
4 Mounting
In liquids
à Mount DPT10 below the measurement loop so that the effective
pressure lines are always filled with liquid and gas bubbles can
bubble up to the process line
à For measurements in products with solid content such as e.g. dirty
liquids, the installation of separators and drain valves is
recommended to enable collection and removal of debris and
sediment.
à Fill the effective pressure lines to the height of the condensate
vessels before setup
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Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA 17
+
–
1
2 2
3
5 5
6
4 4
4 Mounting
Fig. 12: Measurement setup, flow measurement in liquids
1 Orifice or impact pressure probe
2 Blocking valves
3 DPT10
4 Precipitator
5 Drain valves
6 3-fold valve block
4.4 Measurement setup level
In open vessels with
effective pressure line
à Mount DPT10 below the lower measurement connection so that
the effective pressure lines are always filled with liquid
à Minus side is open to the atmospheric pressure
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37245-EN-100120
+
p
atm
min.
p
atm
1
2
3
4
5
+
min.
p
atm
p
atm
1
2
+ –
4 Mounting
à For measurements in products with solid content such as e.g. dirty
liquids, the installation of separators and drain valves is
recommended to enable collection and removal of debris and
sediment.
Fig. 13: Measurement setup, level measurement in the open vessel
1 DPT10
2 Minus side is open to the atmospheric pressure
3 Blocking valve
4 Precipitator
5 Drain valve
In open vessels with
unilateral pressure
transmitter
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Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA 19
à Mount DPT10 directly to the vessel
à Minus side is open to the atmospheric pressure
Fig. 14: Measurement setup, level measurement in the open vessel
1 DPT10
2 Minus side is open to the atmospheric pressure
+
–
min.
max.
1
3
4
3
4
5
1
2
4 Mounting
In closed vessels with
effective pressure lines
à Mount DPT10 below the lower measurement connection so that
the effective pressure lines are always filled with liquid
à Connect minus side always above the max. level
à For measurements in products with solid content such as e.g. dirty
liquids, the installation of separators and drain valves is
recommended to enable collection and removal of debris and
sediment.
Fig. 15: Measurement setup, level measurement in closed vessel
1 Blocking valves
2 DPT10
3 Precipitator
4 Drain valves
5 3-fold valve block
In closed vessels with
unilateral pressure
transmitter
à Mount DPT10 directly to the vessel
à Connect minus side always above the max. level
à For measurements in products with solid content such as e.g. dirty
liquids, the installation of separators and drain valves is
recommended to enable collection and removal of debris and
sediment.
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37245-EN-100120
+
–
max.
min.
+ –
1
2
3
4
Fig. 16: Measurement setup, level measurement in closed vessel
+
–
min.
max.
1
1 Blocking valve
2 Precipitator
3 Drain valve
4 DPT10
4 Mounting
In closed vessels with
bilateral pressure transmitter
à Mount DPT10 below the lower isolating diaphragm
à The ambient temperature should be the same for both capillaries
Information:
Level measurement is only ensured between the upper edge of the
lower and the lower edge of the upper pressure transmitter.
Fig. 17: Measurement setup, level measurement in closed vessel
1 DPT10
In closed vessels with
steam layering with effective pressure line
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Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA 21
à Mount DPT10 below the lower measurement connection so that
the effective pressure lines are always filled with liquid
+
–
min.
max.
1
2
2
3
4
6
5 5
4 Mounting
à Connect minus side always above the max. level
à The condensate vessel ensures a constant pressure on the minus
side
à For measurements in products with solid content such as e.g. dirty
liquids, the installation of separators and drain valves is
recommended to enable collection and removal of debris and
sediment.
Fig. 18: Measurement setup in closed vessel with superimposed steam
1 Condensate vessel
2 Blocking valves
3 DPT10
4 Precipitator
5 Drain valves
6 3-fold valve block
In closed vessels with
steam layering with unilateral pressure transmitter
à Mount DPT10 directly to the vessel
à Connect minus side always above the max. level
à The condensate vessel ensures a constant pressure on the minus
side
à For measurements in products with solid content such as e.g. dirty
liquids, the installation of separators and drain valves is
recommended to enable collection and removal of debris and
sediment.
22 Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA
37245-EN-100120
+
–
min.
max.
1
2
3
4
5
+ –
=
∆p
h
g
+
–
0,3 m
4 Mounting
Fig. 19: Measurement setup in closed vessel with superimposed steam
1 Condensate vessel
2 Blocking valve
3 Precipitator
4 Drain valve
5 DPT10
4.5 Measurement setup density and interface
Density and interface measurement are carried out in level measurement mode.
Density measurement
à Mount DPT10 below the lower isolating diaphragm
à The ambient temperature should be the same for both capillaries
Information:
The density measurement is only ensured at a level above the upper
measuring point. Homogeneous density allocation is a prerequisite.
Fig. 20: Measurement setup with density measurement. Density 1 and h = 0.3 m
means Δp = 29.4 mbar. With density change: e.g. measured Δp = 35.3 mbar
37245-EN-100120
Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA 23
corresponds to density 1.2, measured Δp = 23.5 mbar corresponds to density
0.8
1
+
–
0,3 m
0,8
1,0
4 Mounting
Interface measurement
à Mount DPT10 below the lower isolating diaphragm
à The ambient temperature should be the same for both capillaries
Information:
An interface measurement is only possible if the densities of the two
media remain the same and the interface is between the two
measurement points. The total level must be above the upper
measurement point.
Fig. 21: Measurement setup with interface measurement. Min. adjustment with
filling complete with density 0.8 (Δp = 23.5 mbar), max. adjustment with filling
complete with density 1.0 (Δp = 29.4 mbar)
24 Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA
37245-EN-100120
+
1
2
3
4
3
4 Mounting
4.6 Measurement setup differential pressure
In gases and vapours
In liquids
à Mount DPT10 above the measurement loop so that condensate
can drain off in the process cable.
Fig. 22: Measurement setup, differential pressure measurement in gases and
vapours
1 DPT10
2 3-fold valve block
3 Blocking valves
4 E.g. filter
à Mount DPT10 below the measurement loop so that the effective
pressure lines are always filled with liquid and gas bubbles can
bubble up to the process line
à For measurements in products with solid content such as e.g. dirty
liquids, the installation of separators and drain valves is
recommended to enable collection and removal of debris and
sediment.
37245-EN-100120
Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA 25
+
–
1
2
4
5
6
4
5
2
3
+
–
1
4
22
3
4 Mounting
Fig. 23: Measurement setup, flow measurement in liquids
1 E.g. filter
2 Blocking valves
3 DPT10
4 Precipitator
5 Drain valves
6 3-fold valve block
In gases, vapours and
liquids
26 Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA
à Mount isolating diaphragm with capillaries on top or laterally on the
pipeline
à In vacuum applications: Mount DPT10 below the measurement
loop
à The ambient temperature should be the same for both capillaries
Fig. 24: Measurement setup, differential pressure measurement in gases,
vapours and liquids
1 Isolating diaphragm with bolting
2 Capillaries
3 E.g. filter
4 DPT10
37245-EN-100120
2
3 4
5
6
7
8
9
1
+ –
4 Mounting
4.7 Mounting arrangement and connection valve
block
Mounting arrangement
The following illustration shows the elements for a tube mounting and
an example for a mounting arrangement with valve block.
Fig. 25: Mounting arrangement with tube mounting
1 Strap for tube mounting
2 Mounting bracket
3 Ventilation valve
4 Fixing screws
5 DPT10
6 PTFE seal
7 3-fold valve block
8 Oval flange adapter
9 Fixing screws
37245-EN-100120
Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA 27
A:
A
5
1 2
43
5 7 89 6
21
8
4 6
7 9
3
4 Mounting
Connection valve block
The following illustration shows the connection of a 5-fold valve block.
Fig. 26: Connection of a 5-fold valve block
1 Process
2 Process
3 Purging
4 Purging
5 DPT10
6 PTFE seal
7 5-fold valve block
28 Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA
37245-EN-100120
8 Oval flange adapter
90 mm (3.54")
R3,5 mm
(0.14")
3 mm
(0.12")
70 mm (2.76")
8 mm
(0.32")
93 mm (3.66")
110 mm (4.33")
9 Fixing screws
4.8 External housing
4 Mounting
Wall mounting
1 Mark the holes according to the following drilling template
2 Depending on the mounting surface, fasten the wall mounting
plate with 4 screws
Fig. 27: Drilling template - wall mounting plate
Mount the wall mounting plate so that the cable entry of the socket
housing points downward. The socket housing can be displaced by
180° to the wall mounting plate.
37245-EN-100120
Differential pressure transmitter DPT10 - metal measuring diaphragm • Profibus PA 29
Check the following after mounting the instrument:
l Did you tighten all screws?
l Closing screws and ventilation valves closed
4.9 Mounting control
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