Endress+Hauser Flowphant T DTT31 Flowphant T DTT35 User manual

Products Solutions Services
Operating Instructions
Flowphant T DTT31, DTT35
Flow switch
80 50
%%
BA00235R/09/EN/17.18
71415550
2018-02-15
Valid as of version
01.00 (device version)

Flowphant T DTT31, DTT35 Table of contents
Endress+Hauser 3
Table of contents
1 About this document ........... 4
1.1 Document function ................... 4
1.2 Symbols used ........................ 4
2 Basic safety instructions ....... 5
2.1 Requirements for the personnel ........ 5
2.2 Designated use ...................... 6
2.3 Workplace safety .................... 6
2.4 Operational safety ................... 6
2.5 Product safety ....................... 6
2.6 IT security .......................... 7
3 Incoming acceptance and
product identification .......... 7
3.1 Incoming acceptance ................. 7
3.2 Product identification ................. 7
3.3 Storage and transport ................. 8
4 Installation ...................... 8
4.1 Installation conditions ................ 8
5 Electrical connection .......... 12
5.1 Connection conditions ............... 12
6 Operation options ............. 14
6.1 Overview of operation options ........ 14
6.2 Structure and function of the operating
menu ............................. 16
6.3 Access to the operating menu via the
operating tool ...................... 26
7 Diagnostics and
troubleshooting ............... 27
7.1 General troubleshooting ............. 27
7.2 Firmware history ................... 29
8 Maintenance .................. 30
9 Repair .......................... 30
9.1 Return ............................ 30
9.2 Disposal ........................... 30
10 Accessories .................... 31
10.1 Device-specific accessories ............ 31
10.2 Communication-specific accessories ... 34
11 Technical data ................. 35
11.1 Output ............................ 35
11.2 Power supply ....................... 36
11.3 Environment ....................... 36
11.4 Process ............................ 37
11.5 Mechanical construction ............. 38
11.6 Certificates and approvals ............ 41
11.7 Supplementary documentation ........ 42

About this document Flowphant T DTT31, DTT35
4 Endress+Hauser
1 About this document
1.1 Document function
These Operating Instructions contain all the information that is required in various phases of
the life cycle of the device: from product identification, incoming acceptance and storage, to
mounting, connection, operation and commissioning through to troubleshooting,
maintenance and disposal.
1.2 Symbols used
1.2.1 Safety symbols
Symbol Meaning
DANGER
DANGER!
This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in
serious or fatal injury.
WARNING
WARNING!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
serious or fatal injury.
CAUTION
CAUTION!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
minor or medium injury.
NOTICE
NOTE!
This symbol contains information on procedures and other facts which do not result in
personal injury.
1.2.2 Symbols for certain types of information
Symbol Meaning
Permitted
Procedures, processes or actions that are permitted.
Preferred
Procedures, processes or actions that are preferred.
Forbidden
Procedures, processes or actions that are forbidden.
Tip
Indicates additional information.
Reference to documentation.
A
Reference to page.
Reference to graphic.

Flowphant T DTT31, DTT35 Basic safety instructions
Endress+Hauser 5
Symbol Meaning
Notice or individual step to be observed.
1.
,
2.
,
3.
… Series of steps.
Result of a step.
Help in the event of a problem.
Visual inspection.
1.2.3 Symbols in graphics
Symbol Meaning
1, 2, 3, ... Item numbers
1.
,
2.
,
3.
, … Series of steps
A, B, C, ... Views
A-A, B-B, C-C, ... Sections
-
Hazardous area
.
Safe area (non-hazardous area)
Flow direction
2 Basic safety instructions
2.1 Requirements for the personnel
The personnel for installation, commissioning, diagnostics and maintenance must fulfill the
following requirements:
‣Trained, qualified specialists must have a relevant qualification for this specific function
and task.
‣Are authorized by the plant owner/operator.
‣Are familiar with federal/national regulations.
‣Before starting work, read and understand the instructions in the manual and
supplementary documentation as well as the certificates (depending on the application).
‣Follow instructions and comply with basic conditions.
The operating personnel must fulfill the following requirements:
‣Are instructed and authorized according to the requirements of the task by the facility's
owner-operator.
‣Follow the instructions in this manual.

Basic safety instructions Flowphant T DTT31, DTT35
6 Endress+Hauser
2.2 Designated use
The device is a flow switch for monitoring mass flow rates in industrial processes. The device
is designed to meet state-of-the-art safety requirements and complies with applicable
standards and EC regulations. The device can, however, be a source of danger if used
incorrectly or for anything other than the designated use.
2.3 Workplace safety
For work on and with the device:
‣Wear the required personal protective equipment according to federal/national
regulations.
For welding work on the piping:
‣Do not ground the welding unit via the measuring device.
If working on and with the device with wet hands:
‣Due to the increased risk of electric shock, gloves must be worn.
2.4 Operational safety
• Functional safety:
The device has been developed according to the IEC 61508 and IEC 61511-1 (FDIS)
standards. The device version with a PNP switch output and additional analog output is
fitted with mechanisms for error detection and prevention within the electronics and
software.
• Hazardous area:
The device is not approved for use in hazardous areas.
Risk of injury!
‣Operate the device in proper technical condition and fail-safe condition only.
‣The operator is responsible for the interference-free operation of the device.
Modifications to the device
Unauthorized modifications to the device are not permitted and can lead to unforeseeable
dangers:
‣If modifications are nevertheless required, consult with the manufacturer.
Repair
To ensure continued operational safety and reliability:
‣Carry out repairs on the device only if they are expressly permitted.
‣Observe federal/national regulations pertaining to the repair of an electrical device.
‣Use only original spare parts and accessories from the manufacturer.
2.5 Product safety
This measuring device is designed in accordance with good engineering practice to meet state-
of-the-art safety requirements, has been tested, and left the factory in a condition in which it
is safe to operate.

Flowphant T DTT31, DTT35 Incoming acceptance and product identification
Endress+Hauser 7
It meets general safety standards and legal requirements. It also complies with the EU
directives listed in the device-specific EU Declaration of Conformity. .
2.6 IT security
Our warranty is valid only if the device is installed and used as described in the Operating
Instructions. The device is equipped with security mechanisms to protect it against any
inadvertent changes to the settings.
IT security measures, which provide additional protection for the device and associated data
transfer, must be implemented by the operators themselves in line with their security
standards.
3 Incoming acceptance and product identification
3.1 Incoming acceptance
Proceed as follows on receipt of the device:
1. Check whether the packaging is intact.
2. If damage is discovered:
Report all damage immediately to the manufacturer.
3. Do not install damaged material, as the manufacturer cannot otherwise guarantee
compliance with the safety requirements and cannot be held responsible for the
consequences that may result.
4. Compare the scope of delivery against the contents of your order.
5. Remove all the packaging material used for transportation.
3.2 Product identification
The device can be identified in the following ways:
• Nameplate specifications
• Enter the serial number from the nameplate in the W@M Device Viewer
(www.endress.com/deviceviewer): all data relating to the device and an overview of the
Technical Documentation supplied with the device are displayed.
The nameplate illustrated below is designed to help users identify specific product
information, such as the serial number, design, variables, configuration and device approvals:

Installation Flowphant T DTT31, DTT35
8 Endress+Hauser
Flowphant T
Made in Germany D-87484 Nesselwang
Order Code: DTT3x-xxxxxxxx
Ser.No.: xxxxxxxxxxxxxx
TAG No.: Xxxxxxxxxxxxxxxxxx
Xxxxxxxxxxxxxxxxxx
Rel.: X.XX.XX
Flow (0.03… 3m/s; -20 °C...+85 °C)
-40°C <Ta < 85°C
Output < 250 mA
Current consump.100mA
18 - 30V DC
PNP
1
4
3
2
L+
L-
1 2
IP6X
1
2
3
4
56
7
8
9
10
A0006981
 1 Nameplate for device identification
1 Order code
2 Serial number
3 TAG number
4 Release number
5 Connection data
6 Measuring range
7 Ambient temperature range
8 Degree of protection
9 Approvals
10 Connection diagram
Check the data on the nameplate of the device and compare them against the
requirements of the measuring point.
3.3 Storage and transport
Pack the device so that it is reliably protected against impact when it is stored (and
transported). The original packaging offers the best protection.
Storage temperature –40 to +85 °C (–40 to +185 °F)
4 Installation
4.1 Installation conditions
4.1.1 Dimensions
→  38

Flowphant T DTT31, DTT35 Installation
Endress+Hauser 9
4.1.2 General installation instructions
NOTICE
Damage to the device.
‣To ensure correct monitoring, the sensor must be installed in a way that produces a fully
developed flow profile.
‣Stabilization sections (5x DN) must be provided in the pipe downstream from a pump, pipe
elbows, internal fixtures and cross-sectional changes.
NOTICE
Damage to the device.
‣Do not turn the device into the process connection thread at the housing→  9.
‣Always install the device at the wrench flats.
‣Use a suitable open-ended wrench →  9.
‣The local display can be rotated electronically by 180 °→  14.
‣The top housing section can be rotated mechanically by up to 310 °.

Installation Flowphant T DTT31, DTT35
10 Endress+Hauser
• The sensor tip must be completely surrounded by the
medium
• Position the sensor tip in the area of maximum flow
velocity (pipe center)
• Minimum sensor immersion length
Li ≥ 10 mm (0.4 in).
80
%
Li
vm
1
A0006976
 2 Installation instructions (example)
Orientation
• For horizontal pipes: lateral installation. Installation
from above only if the pipe is completely filled with
medium
• For vertical pipes: installation in the ascending pipe
• For DTT35: install at an angle of at least 3 ° for self-
draining
80
%
80
%
80
%
=3°
A0006977
 3 Correct orientation
NOTICE
If the device is installed incorrectly this can result in
incorrect measurements!
‣Do not install in down pipes open towards the end.
‣The sensor tip should never touch the pipe wall.
80
%
80
%
A0006978
 4 Incorrect installation!

Flowphant T DTT31, DTT35 Installation
Endress+Hauser 11
4.1.3 Installation instructions when installing in hygienic processes
A B C
R0.4 R0.4
Sensor with
milk pipe
connection Sensor with
Varivent connection
Shaped
gasket
Companion
connection
O-Ring
Groove
slip-on nut
Centering ring
Sealing
Companion
connection
Companion
connection
A0011673-EN
 5 Installation in hygienic processes
A Sanitary connection according to DIN 11851 (PL, PG, PH connection), only in conjunction with
EHEDG-certified and self-centering sealing ring as per EHEDG position paper
B Varivent and APV-Inline (LB, LL, HL connection)
C Clamp according to ISO 2852 (DB, DL connection), only in conjunction with seal as per EHEDG
position paper
NOTICE
The following action must be taken if a sealing ring (O-ring) or seal fails:
‣The thermometer must be removed.
‣The thread and the O-ring joint/sealing surface must be cleaned.
‣The sealing ring or seal must be replaced.
‣Perform CIP after installation.
In the case of weld-in connections, exercise the necessary degree of care when performing the
welding work on the process side:
1. Suitable welding material
2. Flush-welded or with welding radius > 3.2 mm (0.13 in)
3. No recesses, folds or gaps
4. Honed and polished surface, Ra ≤ 0.76 µm (30 µin)
Pay attention to the following when installing the thermometer to ensure that the cleanability
is not affected:
1. Comply with the requirements of the 3-A Standard.

Electrical connection Flowphant T DTT31, DTT35
12 Endress+Hauser
2. The Varivent® couplings enable flush-mount installation.
4.1.4 Inlet and outlet runs
NOTICE
The thermal measuring principle is sensitive to disturbed flow conditions.
‣Install the measuring device as far away as possible from any flow disturbances. For further
information → ISO 14511.
‣Install the sensor upstream from fittings such as valves, T-pieces, elbows etc.
‣To attain the specified level of accuracy of the measuring device, the inlet and outlet runs
mentioned below must be maintained at the very minimum.
‣If several flow disturbances are present, maintain the longest specified inlet run.
5 × DN 3 × DN
3 × DN
15 × DN
5 × DN
3 × DN 3 × DN
3 × DN
5 × DN
3 × DN
10 × DN
5 × DN
1
4
2
6
3
5
A0023225
 6 Inlet and outlet runs
1 Reduction
2 Expansion
3 90° elbow or T-piece
4 Pump
5 Control valve
6 2x 90° elbow, 2- or 3-dimensional
5 Electrical connection
5.1 Connection conditions
5.1.1 DC voltage version with M12x1 connector
DTT35: According to the 3-A Standards electrical connecting cables must be smooth,
corrosion-resistant and easy to clean.

Flowphant T DTT31, DTT35 Electrical connection
Endress+Hauser 13
4...20 mA
L–
L–
L–
L+
L+
L+
2
2
21
1
1
3
3
34
4
4
R1 m
R2
R1
A1 A2
A2’
A3
A0006818
 7 Flow switch with M12x1 connector
Item No. Output setting
A1 1x PNP switch output
A2 A2 2x PNP switch output R1 and m (R2)
A2’ 2x PNP switch output R1 and m (diagnostics/NC contact for "DESINA"
setting)
A3 1x PNP switch output and 1x analog output (4 to 20 mA)
LWARNING
Observe the following to avoid damaging the analog input of a PLC:
‣Do not connect the active PNP switch output of the device to the 4 to 20 mA input of a PLC.
DESINA: distributed and standardized installation technology for machine tools and
manufacturing systems, →  22.
R2 = diagnostics/NC contact (for more information about DESINA, see www.desina.de)
NOTICE
The sensor tip of the device heats up once the device is connected to the power supply!
The temperature can increase to approx. 90 °C (194 °F).
‣As the device sensor tip heats up, appropriate protective clothing must be worn!

Operation options Flowphant T DTT31, DTT35
14 Endress+Hauser
5.1.2 DC voltage version with valve connector
1
3
L–
L+
2
R
B
A0035798
 8 Flow switch with M16x1.5 valve connector or NPT ½"
Item No. Output setting
B 1x PNP switch output
6 Operation options
6.1 Overview of operation options
The device is operated via three keys. The digital display and the light emitting diodes (LED)
assist navigation through the operating menu.

Flowphant T DTT31, DTT35 Operation options
Endress+Hauser 15
Operating keys
E
Communication jack
for personal computer
LED for status
Green = ok
Red = error/fault
LED red/green blinking = warning
Digital display
Illumination white (= ok)
Illumination red (= error/fault)
Yellow LEDs for switching states
LED on = switch closed
LED off = switch open
A0020825-EN
 9 Position of the operating elements and possibilities for display

Operation options Flowphant T DTT31, DTT35
16 Endress+Hauser
6.2 Structure and function of the operating menu
6.2.1 Navigation in the operating menu
AB
E
E
EE
E
EE E E E
> 3 s
> 3 s
E
SAVE
BASE
1.
2.
3.
4.
5.
5.
6.
7.
A0035802
 10 Navigation in the operating menu
A Function group selection
B Function selection
1. Enter the operating menu – press the E key for longer than 3 s.
2. Select the "Function group" with the + or − key.
3. Select the "Function" with the E key.
4. If software locking is enabled, it must be disabled before making entries or changes.
Enter and change the parameters with the + or − key.
5. Press the E key to return to "Function".
6. Press the E repeatedly to return to "Function group" until the relevant function group is
reached.
7. To return to the measuring position (Home), press the E key for longer than 3 s.
8. To display the prompt to save data (press + or − to select the option "YES" or "NO"),
confirm with the E key.
If "YES" is selected when asked to save the data, changes are made to the parameter
settings.

Flowphant T DTT31, DTT35 Operation options
Endress+Hauser 17
6.2.2 Navigating the Calibration (CAL) function group
Variable limits for HIF (Learn High Flow) or LOWF (Learn Low Flow) can be set with the
'Learn Function'.
• HIF setting (Learn High Flow): Enter any flow rate between 70 to 100 % of the maximum
value in the process. The device then uses this value to automatically calculate the
corresponding 100 % value.
• LOWF setting (Learn Low Flow): Enter any flow rate between 0 to 20 % of the maximum
value in the process. The device then uses this value to automatically calculate the
corresponding 0 % value.
B
OUT
C
E
E
CAL
HIF RUN
LOWF
> 2 s
> 60 s
~ 10 s
WAIT
OK W432
E
80%
0%
1.
2. 3. 4.
5.
6.
7.
A0010787
 11 Navigating the 'Learn' function taking the example of the Calibration (CAL) function group
B Function selection
C Selection of settings
1. Select the "HIF" (Learn High Flow) or "LOWF" (Learn Low Flow) function with the E key.
2. Select the "RUN" function with the + key; the Learn function is initialized.
3. Select the flow rate with the + key, press for longer than 2 s.
4. If "HIF" (Learn High Flow) is set, the upper flow rate (70 to 100 %) is selected. Enter the
current relative flow rate in increments of 1 % with the + or - key (factory setting 80 %).
5. If "LOWF" (Learn Low Flow) is set, the lower flow rate (0 to 20 %) is selected. Enter the
current relative flow rate in increments of 1 %with the + or - key (factory setting 0).
6. Select the "WAIT" function with the E key.
7. Accept ('learn') the current measured value after approx. 10 s- "OK" appears on the
display.

Operation options Flowphant T DTT31, DTT35
18 Endress+Hauser
8. Or: The message "W432" appears on the display after 60 s. A sufficiently stable flow
could not be detected during the learning process. The system takes an average of the
10 values last measured during the learning process.
9. Return to the CAL function group (Home position) with the E key.
The device is still operative if message W432 is displayed. There can be large measuring
uncertainties, however. Recommendation: Repeat the learning process (points 1 to 4)
until "OK" appears on the display.
6.2.3 Navigating the function switch point "Learn" (SPL)
Variable limits for HIF (Learn High Flow) or LOWF (Learn Low Flow) can be set with the
'Learn Function'.
B
SERV
C
E
E
OUT
SPL RUN
> 2 s
> 60 s
~ 10 s
WAIT
OK W432
1. 2. 3.
4.
5.
6.
A0005785
 12 Navigating the function switch point 'Learn' (SPL)
B Function selection
C Selection of settings
1. Select SPL (switch point 'Learn'), optionally SPL2 (switch point 2 'Learn') with the E key.
2. Select the "RUN" function with the + key; the Learn function is initialized.
3. Select the "WAIT" function with the + key, press for longer than 2 s.
4. Accept ('learn') the current measured value after approx. 10 s- "OK" appears on the
display.
5. Or: The message "W432" or "NOK" appears on the display after 60 s. W432: A
sufficiently stable flow could not be detected during the learning process. The system
takes an average of the 10 values last measured during the learning process.

Flowphant T DTT31, DTT35 Operation options
Endress+Hauser 19
6. NOK: The switch point determined is under 5 % of the measuring range and cannot be
accepted because the switch point must be at least 5 % greater than the switchback
point (RSP).
The device is still operative if message "W432" or "NOK" is displayed. There can be large
deviations at the switch point, however. Recommendation: Repeat the learning process
(points 1 to 4) until "OK" appears on the display.

Operation options Flowphant T DTT31, DTT35
20 Endress+Hauser
6.2.4 Structure of the operating menu for 2 switch outputs
BASE
CAL
OUT
OUT2
(optional)
SERV
UNIT
FUNC
FNC2
SIM
SIM2
PRES
LOCK
DISP
HIF
DESI
TAU
SP
SP2
SPL
SP2L
RSP
RSP2
TSP
TSP2
REV’C
LST’A
CODE
°C
HYNC
HYNC
OFF
OFF
NO
0
PV
RUN
NO
0.0
0.0
0.0
RUN
RUN
0.0
0.0
0.0
0.0
0
0
0
°F
HYNO
HYNO
OPEN
OPEN
YES
PVRO
YES
TMPR
CLOS
CLOS
TMP OFF OFFR
E
E
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ ++ +
E
E
E
ABC
+
-
+
-
+
-
+
-
MODE FLOW TEMP
+ +
UNIT °C °F
+ +
LOWF RUN
+
WAIT
+
WAIT
+
80%
+
80%
+
-+
E
E
WAIT
WAIT
TRSP 0.0
+
TRSP2 0.0
+
A0005784
 13 Operating menu