Endress+Hauser Deltatop DP71B User manual

BA386P/00/EN/07.09
71098177
Operating Instructions
Deltatop DP71B, DP72B, DP73B
Pitot tubes for differential pressure flow measurement
–+
r

Deltatop DP71B, DP72B, DP73B Table of Contents
Endress+Hauser 3
Table of Contents
1 Safety instructions . . . . . . . . . . . . . . . . 4
1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Installation, commissioning and operation . . . . . . . . 4
1.3 Hazardous locations . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Notes on safety conventions and icons . . . . . . . . . . . 5
2 Identification . . . . . . . . . . . . . . . . . . . . 6
2.1 Nameplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Product structure . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4 Registered trademarks . . . . . . . . . . . . . . . . . . . . . . . 8
3 Installation . . . . . . . . . . . . . . . . . . . . . . 9
3.1 Incoming acceptance, transport, storage . . . . . . . . . . 9
3.2 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.3 Mounting position for liquid or steam applications . 10
3.4 Mounting position for gas applications . . . . . . . . . . 11
3.5 General mounting conditions . . . . . . . . . . . . . . . . . 12
3.6 General mounting information . . . . . . . . . . . . . . . . 16
3.7 Installation steps for the welding socket version . . . 17
3.8 Installation steps for the welding socket version with a
spring lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.9 Installation steps for the welding flange version . . . 21
3.10 Installation steps for the welding flange version with a
spring lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.11 Installation steps for the flowtap welding socket
version with a safety chain . . . . . . . . . . . . . . . . . . . 25
3.12 Installation steps for the flowtap flange socket
version with a safety chain . . . . . . . . . . . . . . . . . . . 27
3.13 Installation steps for the flowtap welding socket
version with a spindle . . . . . . . . . . . . . . . . . . . . . . 29
3.14 Installation steps for the flowtap welding flange
version with a spindle . . . . . . . . . . . . . . . . . . . . . . 31
3.15 Basic instructions regarding drilling a hole in the pipe
without stopping the process (hot tapping) . . . . . . . 33
3.16 Post-installation check . . . . . . . . . . . . . . . . . . . . . . 34
4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . 35
4.1 Wiring of the Deltabar S differential pressure
transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.2 Wiring of the Deltabar M differential pressure
transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.3 Wiring of the integrated Pt100 temperature sensor 35
5 Operation and commissioning . . . . . . 36
5.1 Configuration of the differential pressure transmitter
Deltabar S and Deltabar M . . . . . . . . . . . . . . . . . . 36
5.2 Configuration of temperature and pressure
compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.3 Use of accessories . . . . . . . . . . . . . . . . . . . . . . . . . 38
6 Troubleshooting . . . . . . . . . . . . . . . . . 41
6.1 Error messages of the Deltabar S or Deltabar M . . . 41
6.2 Application errors . . . . . . . . . . . . . . . . . . . . . . . . . 42
7 Maintenance and repairs . . . . . . . . . . . 43
7.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.2 Exterior cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.3 Replacing seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.4 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
7.5 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
7.6 Contact addresses of Endress+Hauser . . . . . . . . . . . 44
8 Accessories . . . . . . . . . . . . . . . . . . . . . 45
8.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
9 Appendix. . . . . . . . . . . . . . . . . . . . . . . 46
9.1 Measuring principle . . . . . . . . . . . . . . . . . . . . . . . . 46
9.2 Flow calculation . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Safety instructions Deltatop DP71B, DP72B, DP73B
4Endress+Hauser
1 Safety instructions
1.1 Designated use
The measuring system is used to measure the volume or mass flow of saturated steam, superheated
steam, gases and liquids.
In the event of incorrect use or use other than that designated, the operational safety of the
measuring devices can be suspended. The manufacturer accepts no liability for damage arising as a
result.
1.2 Installation, commissioning and operation
The Deltatop is a fail-safe, state-of-the-art measuring system, and meets the applicable standards and
EC directives. If used incorrectly or for applications for which it is not intended, however, it can be
a source of application-related danger, e.g. product overflow due to incorrect installation or
configuration. Installation, electrical connection, startup, operation and maintenance of the
measuring device must therefore be carried out exclusively by trained specialists authorized to
perform such work by the system operator. Technical personnel must have read and understood
these Operating Instructions and must adhere to them. You may only undertake modifications or
repair work to the device if this is expressly permitted in the Operating Instructions.
1.3 Hazardous locations
Measuring systems for use in hazardous environments are accompanied by separate "Ex
documentation", which is an integral part of these Operating Instructions. Strict compliance with
the installation instructions and ratings as stated in this supplementary documentation is mandatory.
• Ensure that all personnel are suitably qualified.
• Observe the specifications in the certificate as well as national and local standards and regulations.

Deltatop DP71B, DP72B, DP73B Safety instructions
Endress+Hauser 5
1.4 Notes on safety conventions and icons
In order to highlight safety-relevant or alternative operating procedures in the manual, the following
conventions have been used, each indicated by a corresponding symbol in the margin.
Safety conventions
#Warning!
A warning highlights actions or procedures which, if not performed correctly, will lead to personal
injury, a safety hazard or the destruction of the device.
"Caution!
Caution highlights actions or procedures which, if not performed correctly, may lead to personal
injury or the incorrect operation of the device.
!Note!
A note highlights actions or procedures which, if not performed correctly, can have an indirect effect
on operation or trigger an unexpected response on the part of the device.
Explosion protection
0Device certified for use in hazardous locations
If the device has this symbol embossed on its nameplate it can be installed in a hazardous location
-Hazardous location
Symbol used in drawings to indicate hazardous locations. Devices located in and wiring entering
areas designated as “hazardous locations” must comply with the stated type of protection.
.Safe area (non-hazardous location)
Symbol used in drawings to indicate, if necessary, non-hazardous locations. Devices located in safe
areas still require a certificate if their outputs run into hazardous locations.
Electrical symbols
%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 a
grounding system.
*Protective grounding (earth) terminal
A terminal which must be connected to ground prior to making any other connection to the
equipment.
+Equipotential connection (earth bonding)
A connection made to the plant grounding system. This may be an equipotential line or neutral star
bonding depending on national or company codes of practice.
Temperature resistance of the connection cables
States that the connection cables must be able to withstand a temperature of at least 185°F (85 °C).
t >85°C

Identification Deltatop DP71B, DP72B, DP73B
6Endress+Hauser
2 Identification
2.1 Nameplate
P01-xxxxxx-18-xx-00-xx-003
Order code: Order code of the device according to the product structure (see Technical Information TI441P)
Ident. No.: Identification number; characterizes the device unambiguously
Serial No.: Serial number
Pipe ID: Inner diameter of the measuring pipe
K-factor: Flow coefficient of the Pitot tube
Wall thickness: Wall thickness of the measuring pipe
Press. rate: Pressure rating
Mat. of primary: Material of the Pitot tube
Medium: Medium for which the device has been sized
Flow rate: Flow rate for which the device has been sized (operating point)
Calc dP value: Calculated differential pressure at the operating point
Pressure: Operating pressure
Temperature: Operating temperature
2.2 Product structure
See Technical Information TI441P.
K-Faktor:
25002572-–
Order Code:
Deltatop
Assembled in USA. Greenwood.In.
Ident.No.:
Serial No.:
Pipe ID:
Press. rate:
Mat.of primary:
25002573-–
Fluid:
Flow rate:
Calc. dP value:
Pressure:
Temperature:
Wall thickness:

Deltatop DP71B, DP72B, DP73B Identification
Endress+Hauser 7
2.3 Documentation
2.3.1 Deltatop
2.3.2 Deltabar S
Document Device Designation
Technical Information
TI441P DP71B, DP72B, DP73B Differential pressure flow measurement with Pitot tubes
and Deltabar differential pressure transmitter
Operating Instructions
BA386P DP71B, DP72B, DP73B Differential pressure flow measurement with Pitot tubes
and Deltabar differential pressure transmitter
Document Device Designation
Technical Information
TI382P Deltabar S Differential pressure transmitter
Operating Instructions
BA270P Deltabar S Differential pressure transmitter - HART
BA294P Deltabar S Differential pressure transmitter - PROFIBUS PA
BA301P Deltabar S Differential pressure transmitter -
FOUNDATION FIELDBUS
Description of Device Functions
BA274P Cerabar S/Deltabar S/Deltapilot S Pressure and differential pressure transmitter
HART
BA296P Cerabar S/Deltabar S/Deltapilot S Pressure and differential pressure transmitter
PROFIBUS PA
BA303P Cerabar S/Deltabar S/Deltapilot S Pressure and differential pressure transmitter
FOUNDATION FIELDBUS
Safety Instructions
XA235P Deltabar S ATEX II 1/2 G EEx ia
XA237P Deltabar S ATEX II 1/2 D
XA239P Deltabar S ATEX II 1/3 D
XA240P Deltabar S ATEX II 2G EEx d
XA241P Deltabar S ATEX II 3 G EEx nA
XA242P Deltabar S ATEX II 1/2 G EEx id; ATEX II 2 G EEx d
XA243P Deltabar S ATEX II 1/2 GD EEx ia
XA275P Deltabar S ATEX II 1 GD EEx ia

Identification Deltatop DP71B, DP72B, DP73B
8Endress+Hauser
2.3.3 Deltabar M
2.3.4 Flow and Energy Manager RMS621/RMC621
2.4 Registered trademarks
HART®
Registered trademark of the HART Communication Foundation, Austin, USA
PROFIBUS®
Registered trademark of the PROFIBUS Trade Organization, Karlsruhe, Germany
FOUNDATION Fieldbus®
Registered trademark of the Fieldbus Foundation Austin, Texas, USA
VITON®
Registered trademark of E.I. Du Pont de Nemours & Co., Wilmington, USA
Ermeto®
Registered trademark of Parker Hannifin GmbH, Bielefeld, Germany
Document Device Designation
Technical Information
TI434P Deltabar M Differential pressure transmitter
Operating Instructions
BA382P Deltabar M Differential pressure transmitter - HART
Safety Instructions
XA457P Deltabar M ATEX II 1/2 G, II 2 G, Ex ia IIC T6 to T4
XA463P Deltabar M ATEX II 3 G Ex nA IIC T6 to T4
XA459P Deltabar M IECEx Ex ia IIC T6 to T4 Ga/Gb
XA462P Deltabar M IECEx Ex d IIC T6 Gb, Ex d IIC T4 Gb
XA461P Deltabar M KEMA II 2 G Ex d IIC T6, Ex d IIC T4
Document Device
Technical Information
TI092R Flow and Energy Manager RMS621
TI098R Universal Flow and Energy Manager RMC621
Operating Instructions
BA127R Flow and Energy Manager RMS621
BA144R Universal Flow and Energy Manager RMC621

Deltatop DP71B, DP72B, DP73B Installation
Endress+Hauser 9
3 Installation
3.1 Incoming acceptance, transport, storage
3.1.1 Incoming acceptance
Check the packing and contents for any sign of damage.
Check the shipment, make sure nothing is missing and that the scope of supply matches your order.
3.1.2 Transport
"Caution!
Follow the safety instructions and transport conditions for devices of more than 39.68 lbs (18 kg).
Do not lift the measuring device by the housing of the transmitter in order to transport it.
3.1.3 Storage
For storage and transport, pack the measuring device so that is protected against impact. The
original packaging material provides optimum protection.
The permissible storage temperature for the Deltabar transmitter is -40 to +185 °F (-40 to +85 °C).
3.2 Dimensions
See Technical Information TI441P.

Installation Deltatop DP71B, DP72B, DP73B
10 Endress+Hauser
3.3 Mounting position for liquid or steam applications
With liquid or steam applications, the transmitter must be mounted below the pipe. All impulse
pipes must be installed with a slope of at least 1:15 to the transmitter - coming from the process
connection. This ensures that trapped air travels back to the process pipe and thus does not
influence the measurement.
!Note!
When measuring in media with solid contents, such as dirty liquids, installing separators (5) and
drain valves (6) is useful for capturing and removing sediment.
P01-DPxxxxxx-11-xx-xx-xx-005
A: Preferred configuration B: Alternative configuration (requires less space; only possible for clean media)
1: Pitot tube 2: Shut-off valves 3: Three-valve manifold 4: Deltabar differential pressure transmitter 5: Separator 6: Drain
valves
+–
1
2
3
4
5
6
2
5
+–
1
2
3
5
6
2
4
5
AB
6
6
Compact; vertical1) Compact; horizontal2) Remote; vertical Remote; horizontal
flow upwards
DP7xB-EV... (liquid)
DP7xB-GV... (steam)
P01-DP61Dxxx-11-00-00-xx-001
mounting left
DP7xB-EB... (liquid);
DP7xB-GB... (steam)
P01-DP61Dxxx-11-00-00-xx-009
upwards/downwards
DP7xB-DW... (liquid)
DP7xB-FW... (steam)
P01-DP61Dxxx-11-00-00-xx-014
top/bottom
DP7xB-DD... (liquid)
DP7xB-FD... (steam)
P01-DP61Dxxx-11-00-00-xx-017
flow downwards
DP7xB-EU... (liquid)
DP7xB-GU... (steam)
P01-DP61Dxxx-11-00-00-xx-002
mounting right
DP7xB-EC... (liquid)
DP7xB-GC... (steam)
P01-DP61Dxxx-11-00-00-xx-010
1) Recommended housing version for the Deltabar S: T14 (for use of the Deltabar display)
2) Recommended housing version for the Deltabar S: T15 (for use of the Deltabar display)

Deltatop DP71B, DP72B, DP73B Installation
Endress+Hauser 11
"Caution!
For flow measurements in vertical pipes, the primary device should be mounted at a position with
upward flow. This prevents partial emptying of the pipe during measurement.
3.4 Mounting position for gas applications
With gas applications, the transmitter must be mounted above the pipe. All impulse pipes must be
installed with a slope of at least 1:15 to the process connection - coming from the transmitter. This
ensures that any condensate flows back into the process pipe and thus does not influence the
measurement.
!Note!
When measuring in humid gases, installation of condensate separators (5) and drain valves (6) is
useful for capturing and removing condensate.
P01-DPxxxxxx-11-xx-xx-xx-006
A: Preferred configuration B: Alternative configuration (if the transmitter cannot be mounted above the pipe)
1: Pitot tube 2: Shut-off valves 3: Three-valve manifold 4: Deltabar differential pressure transmitter 5: Separator 6: Drain
valve
+–
1
2
3
4
A
1
3
2
B
4
+–
5
6
5
6
2
Compact; vertical1) Compact; horizontal2) Remote; vertical Remote; horizontal
flow upwards
DP7xB-CV...
P01-DP61Dxxx-11-00-00-xx-001
mounting left
DP7xB-CB...
P01-DP61Dxxx-11-00-00-xx-007
upwards/downwards
DP7xB-BW...
P01-DP61Dxxx-11-00-00-xx-013
top/bottom
DP7xB-BD...
P01-DP61Dxxx-11-00-00-xx-016
flow downwards
DP7xB-CU...
P01-DP61Dxxx-11-00-00-xx-002
mounting right
DP7xB-CC...
P01-DP61Dxxx-11-00-00-xx-008
1) Recommended housing version for the Deltabar S: T14 (for use of the Deltabar display)
2) Recommended housing version for the Deltabar S: T15 (for use of the Deltabar display)

Installation Deltatop DP71B, DP72B, DP73B
12 Endress+Hauser
3.5 General mounting conditions
3.5.1 Upstream and downstream lengths
In order to ensure a homogeneous flow profile, it is necessary to mount the Pitot tube at a sufficient
distance to narrowings or bends in the pipe. The required upstream and downstream lengths for
different types of obstacles are summarized in the following table:
Examples (schematic)
P01-DPxxxxxx-11-xx-xx-xx-008
1: Upstream length 2: Downstream length
a: 90° bend b: Valve, open c: 2x90° bend
3.5.2 Homogeneity
The medium must be homogeneous. Changes of the state of aggregation (liquid, gas, steam) are
not permissible.
The measuring pipe must be completely filled.
Type of obstacle Min. upstream length Min. downstream length
90° bend 7 x D 3 x D
2x90° bend
in the same plane
9 x D 3 x D
2x90° bend
in perpendicular planes
18 x D 3 x D
Concentric reducer 8 x D 3 x D
Concentric expander 8 x D 3 x D
Ball/gate valve, fully open 24 x D 4 x D
D: Inner pipe diameter
12
a
b
c

Deltatop DP71B, DP72B, DP73B Installation
Endress+Hauser 13
3.5.3 Mounting position
• The mounting position must be chosen such that access to the transmitter is always possible.
• If the following process temperatures are exceeded, a remote version has to be used. The
transmitter must be mounted at a sufficient distance from the primary device.
3.5.4 Heat insulation
Some applications require suitable measures to avoid heat loss to the environment. A wide range of
materials can be used to provide the required insulation.
With the compact version, the thickness of the insulating layer is taken into account in the sizing.
The actual thickness must not be larger than the thickness specified in the "Sizing sheet - data
sheet".
In the case of insulated pipes, make sure that the impulse pipes are not covered in order to ensure
sufficient heat dissipation. Otherwise the transmitter may become overheated (or undercooled).
This applies equally to both the compact and the remote version.
"Caution!
Danger of electronics overheating!
Make sure that the impulse pipes between the primary element and the transmitter are always kept
free of insulation.
Compact version Remote version
Max. temperature • For gases, liquids and steam:
390 °F (200°C)
•Withstandardmaterial:
approx. 800 °F (427 °C)
Max. pressure 6000 psi (420 bar)
"Caution!
With insulated pipes, the length of the mounting
nozzle must be increased by the thickness H of
the insulating layer. Therefore, this thickness
must be specified on the "Sizing sheet - data
sheet" (see Technical Information TI441P). The
material of the mounting nozzle extension must
be specified in the product structure (feature
80).
The following lengths are available for the
extension of the mounting nozzle:
•2"(50mm)
• 4" (100 mm)
• 5" (127 mm)
• 6" (152.4 mm)
P01-DPBxxxxx-14-xx-xx-xx-003
ID: Inner pipe diameter
H: Thickness of the insulating layer
H
ID

Installation Deltatop DP71B, DP72B, DP73B
14 Endress+Hauser
3.5.5 Mounting position for temperature and pressure compensation
For the calculation of the compensated flow, refer to Page →ä37.
Separate process connections
Two additional probes are required for
temperature and pressure compensation:
•An absolute pressure sensor
This sensor must be mounted on the upstream
side of the Pitot tube.
•A temperature probe
In order to avoid disturbances of the flow
profile, this probe is to be mounted on the
downstream side of the Pitot tube. The
minimum distance between the Pitot tube
and the temperature probe is 3D.
(D: diameter of the pipe)
P01-DPPxxxxx-15-xx-xx-xx-007
1: Absolute pressure probe
2: Pitot tube and differential pressure transmitter
3: Temperature probe
4: Flow computer
123
4
RMC621
RMC621
Endress+Hauser
Endress+Hauser
DpT
p
3D
Combined process connection for absolute
pressure, differential pressure and
temperature
• Versions of the Deltatop DP72B and DP73B
units are available with an integrated Pt100
temperature probe.
• In the case of Deltabar S, an adapter (e.g. oval
flange PZO, see TI441P) can be used to screw
a pressure transmitter or a pressure sensor
into the Deltabar S flange. The absolute
pressure sensor must be mounted at the "+"
side of the Deltabar S.
P01-DP6xBxxx-14-00-00-xx-001
1: Deltabar S differential pressure transmitter
2: Integrated Pt100 temperature probe
3: Absolute pressure transmitter (has to be ordered
separately)
ENDRESS+HAUSER
CERABAR T
1
2
3

Deltatop DP71B, DP72B, DP73B Installation
Endress+Hauser 15
3.5.6 Practical limits
For a reliable measurement with Pitot tubes, the practical limits are shown in the table below.
Equivalent dp with the respective medium velocity.
3.5.7 Alignment of the Pitot tube
Align the head of the sensor so that the arrow labeled "flow" on the head is in the direction of the
flow in the pipe to within the following limits:
P01-DPxxxxxx-11-xx-xx-xx-019
A: Axial alignment;
B: Radial alignment;
C: Alignment in the flow direction (for horizontal pipes)
D: Alignment in the flow direction (for vertical pipes)
Medium Minimum DP Equivalent velocity
Gas 0.1" (2.5 mm) H2O 15 ft/sec. (4.5 m/sec.)
Liquid 1.0" (25 mm) H2O 2 ft/sec. (0.6 m/sec.)
Steam 1.5" (38 mm) H2O 32 ft/sec. (9.7 m/sec.)
+/- 3° +/- 3°
+/- 3°
+/- 3°
AB
C
D

Installation Deltatop DP71B, DP72B, DP73B
16 Endress+Hauser
3.6 General mounting information
• The primary element is calculated for specific pipe and operating data. Therefore it is essential to
check if the data on the nameplate (→ä6) match the actual operating data.
• Before installing the device, check if the required upstream and downstream lengths are provided
(→ä12).
• Observe the required mounting position:
– For liquids or steam: →ä10
–Forgases:→ä11
• For remote versions:
The shut-off valves are mounted to the pressure taps of the primary element.
• For remote versions:
The impulse pipes have to be installed with a slope of at least 1:15.
– For steam and liquids, a venting possibility has to be provided at the highest point.
– For gases, a drainage has to be provided at the lowest point.
The impulse lines (+) and (-) have to be mounted to the respective inlets (process connection) of
the manifold. The transmitter is directly screwed to the manifold with the supplied screws and
gaskets.

Deltatop DP71B, DP72B, DP73B Installation
Endress+Hauser 17
3.7 Installation steps for the welding socket version
P01-DP7xxxx-17-xx-xx-xx-001
A: Without end support B: With end support
1: Sensor 2: Compression nut 3: Back ferrule 4: Front ferrule 5: Compression body 6: Welding socket
7: Opposite end welding socket 8: Support plug
!Note!
• Do the pipe dimensions (inner diameter, wall thickness, thickness of insulation) match the data
of the order and the specifications of the device?
• Do the medium properties and process data match the specifications on the supplied calculation
sheet?
1. Completely depressurize and drain the pipe prior to installing the Deltatop.
2. Drill a hole with the diameter D1 into the pipe.
3. Loosely assemble the sensor to the welding socket (hand-tight) and insert the sensor assembly
into the pipe.
4. Tack the welding socket into position by using the appropriate weld gap (typically 1/16"
(1.5 mm)).
5. Remove the sensor.
6. Protect the threads on the welding socket and finish welding the welding socket to the pipe as
per the applicable piping codes.
7. If an end support is to be mounted:
a. Take a cord and tie one of its ends around the welding socket. Wrap the other end of the
cord around the pipe so that it forms a loop around the pipe. Mark the half-way point of
the circumference on the pipe.
b. Drill a second hole with the diameter D1 into the pipe.
c. Tack-weld the end support onto the pipe by using the appropriate weld gap (typically
1/16" (1.5 mm)).
d. Insert the probe into the pipe and check the alignment of the support. If necessary, adjust
the alignment.
AB
11
22
44
55
33
7
8
66
D1D1
D1
Probe Diameter of the hole (D1)
DP71B 1/2" (13 mm)
DP72B 1" (25 mm)

Installation Deltatop DP71B, DP72B, DP73B
18 Endress+Hauser
e. Remove the probe and perform the finish welding.
8. Using appropriate pipe thread sealant, install the compression body into the welding socket.
9. The tapered end of the front ferrule must point towards the compression body.
10. The back ferrule must be next to the front ferrule with the tapered end pointing toward the
front ferrule.
11. Insert the probe, with the union compression nut and ferrules attached, into the compression
body (do not tighten) until the sensor tip touches the opposite pipe wall or the end support.
12. Align the head of the sensor so that the cover labeled "flow" on the head is in the direction of
the flow in the pipe to within 3°.
13. While pushing the sensor against the opposite wall with a force of at least 50 lbs (22 kg) tighten
the union compression nut.
14. Check the sensor alignment again. If the sensor is not aligned correctly, loosen the union
compression nut and repeat the last installation step.
3.7.1 Installation of the shut-off valves (for the remote version):
The shut-off valves have to be mounted to the nozzles of the primary element before mounting the
sensor into the pipe.
3.7.2 Installation of the manifold and the transmitter (for the remote version):
The impulse pipes have to be installed with the required slope.
(For liquids and steam: →ä10, for gases: →ä11).
• For steam and liquids, a venting possibility has to be provided at the highest point.
• For gases, a drainage has to be mounted at the lowest point. The impulse lines (+) and (-) have to
be mounted to the respective inlets (process connections) of the manifold.
The transmitter is directly screwed to the manifold with the supplied screws and gaskets.

Deltatop DP71B, DP72B, DP73B Installation
Endress+Hauser 19
3.8 Installation steps for the welding socket version with a
spring lock
1. Completely depressurize and drain the pipe prior to installing the Deltatop.
2. Drill a hole with the diameter D1 into the pipe.
3. With the follower and packing rings already in place, loosely insert the sensor into the spring
lock body.
4. Thread the spring lock body into the welding socket (hand-tight) and then insert the complete
assembly into the pipe.
This ensures the welding socket is properly aligned to the hole already drilled in the pipe.
5. Tack-weld the welding socket into position by using the appropriate weld gap (typically 1/16"
(1.5 mm)).
6. Remove the sensor and spring lock body.
7. Protect the threads on the welding socket and finish welding the welding socket to the pipe as
per the applicable piping codes.
8. Using appropriate pipe thread sealant, thread the spring lock body into the welding socket.
9. With the follower and packing rings already in place, insert the sensor into the spring lock body
until the tip of the sensor hits the opposite side of the pipe.
!Note!
The three studs must pass through the indicator ring and the load plate.
10. Align the head of the sensor so that the arrow labeled "flow" on the head is in the direction of
the flow in the pipe to within 3°.
11. Maintain the head in this position for the remainder of the installation procedure.
12. Place the three lock washers and the three load nuts on the studs and tighten.
Diameter of the hole D1
• DP71B: 1/2" (13 mm)
• DP72B: 1" (25 mm)
!Note!
• Do the pipe dimensions (inner diameter, wall
thickness, thickness of insulation) match the
data of the order and the specifications of the
device?
• Do the medium properties and process data
match the specifications on the supplied
calculation sheet?
P01-DP7xxxx-17-xx-xx-xx-002
1: Load plate 2: Load springs 3: Indicator ring
4: Sensor 5: Jam nuts 6: Load nuts 7: Lock washers
8: Packing bolts 9: Follower 10: Packing rings 11: Studs
12: Spring lock body 13: Welding socket
1
2
4
5
3
6
7
8
9
11
10
12
13
D1

Installation Deltatop DP71B, DP72B, DP73B
20 Endress+Hauser
!Note!
For the DP71B and DP72B sensors, tighten the load nuts until the load plate is 0.050" (1.3
mm) from the indicator ring.
For the DP73B sensors, the load plate should be 0.063" (1.6 mm) from the indicator ring.
13. Thread on the three jam nuts and tighten until they are resting hand-tight against the lock nuts.
14. Place a backup wrench on the load nut to prevent it from rotating. While not allowing the load
nut to rotate.
15. Tighten the jam nuts 1/8 turn beyond hand-tight.
16. Tighten the three packing bolts to the appropriate torque value listed in the table below:
!Note!
The weld on the weld ring should not contact the top surface of the follower. If the weld on the
weld ring comes into contact with the follower, the sensor will not be properly bottomed in the pipe.
If this occurs, consult the factory before proceeding.
3.8.1 Installation of the shut-off valves (for the remote version):
The shut-off valves have to be mounted to the nozzles of the primary element before mounting the
sensor into the pipe.
3.8.2 Installation of the manifold and the transmitter for the remote
version:
The impulse pipes have to be installed with the required slope.
(For liquids or steam: →ä10, for gases: →ä11).
• For steam and liquids, a venting possibility has to be provided at the highest point.
• For gases, a drainage has to be mounted at the lowest point. The impulse lines (+) and (-) have to
be mounted to the respective inlets (process connections) of the manifold.
The transmitter is directly screwed to the manifold with the supplied screws and gaskets.
Sensor size Packing bolt
Torque (in-lbs)
Packing bolt
Torque (ft-lbs)
DP71B 50 4.2
DP72B 100 8.3
DP73B 170 14.1