Endress+Hauser Proline t-mass 65 User manual

BA00115D/06/EN/13.10
71123865
Valid as of version
V 3.06.XX (Device software)
Operating Instructions
Proline t-mass 65
MODBUS RS485
Thermal Mass Flow Measuring System

Proline t-mass 65 MODBUS RS485 Table of contents
Endress+Hauser 3
Table of contents
1 Safety instructions . . . . . . . . . . . . . . . . 5
1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Installation, commissioning and operation . . . . . . . . 5
1.3 Operational safety . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.5 Notes on safety conventions and icons . . . . . . . . . . . 6
2 Identification . . . . . . . . . . . . . . . . . . . . 7
2.1 Device designation . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1.1 Nameplate of the transmitter . . . . . . . . . . . . 7
2.1.2 Nameplate of the sensor . . . . . . . . . . . . . . . 8
2.1.3 Nameplate for connections . . . . . . . . . . . . . 9
2.2 Certificates and approvals . . . . . . . . . . . . . . . . . . . 10
2.3 Registered trademarks . . . . . . . . . . . . . . . . . . . . . . 10
3 Installation . . . . . . . . . . . . . . . . . . . . . 11
3.1 Incoming acceptance, transport and storage . . . . . . 11
3.1.1 Incoming acceptance . . . . . . . . . . . . . . . . . 11
3.1.2 Transport . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1.3 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2 Installation conditions . . . . . . . . . . . . . . . . . . . . . . 12
3.2.1 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2.2 System pressure and pulsating flow . . . . . . 12
3.2.3 Pipework requirements . . . . . . . . . . . . . . . 13
3.2.4 Orientation . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2.5 Inlet and outlet runs . . . . . . . . . . . . . . . . . 15
3.2.6 Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.2.7 Thermal insulation . . . . . . . . . . . . . . . . . . 18
3.2.8 Vibrations . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.3 Installation instructions . . . . . . . . . . . . . . . . . . . . . 19
3.3.1 Mounting the insertion sensor . . . . . . . . . . 19
3.3.2 Removing the insertion sensor . . . . . . . . . . 22
3.3.3 Mounting the flanged sensor . . . . . . . . . . . 22
3.3.4 Turning the transmitter housing . . . . . . . . 23
3.3.5 Turning the local display . . . . . . . . . . . . . . 23
3.3.6 Installing the wall-mount
transmitter housing . . . . . . . . . . . . . . . . . . 24
3.4 Post-installation check . . . . . . . . . . . . . . . . . . . . . . 26
4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . 27
4.1 Cable specification MODBUS RS485 . . . . . . . . . . . 27
4.1.1 Cable type . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.1.2 Shielding and grounding . . . . . . . . . . . . . . 27
4.2 Connecting the remote version . . . . . . . . . . . . . . . 28
4.2.1 Connecting connecting cable for
sensor/transmitter . . . . . . . . . . . . . . . . . . . 28
4.2.2 Cable specification, connecting cable . . . . . 29
4.3 Connecting the measuring unit . . . . . . . . . . . . . . . 30
4.3.1 Terminal assignment . . . . . . . . . . . . . . . . . 30
4.3.2 Transmitter connection . . . . . . . . . . . . . . . 30
4.3.3 MODBUS RS485 connection diagram . . . . 31
4.4 Degree of protection . . . . . . . . . . . . . . . . . . . . . . . 32
4.5 Post-connection check . . . . . . . . . . . . . . . . . . . . . . 33
5 Operation . . . . . . . . . . . . . . . . . . . . . . 34
5.1 Quick operation guide . . . . . . . . . . . . . . . . . . . . . . 34
5.2 Display and operating elements . . . . . . . . . . . . . . . 35
5.3 Brief operating instructions to the function matrix . 36
5.3.1 General notes . . . . . . . . . . . . . . . . . . . . . . 37
5.3.2 Enabling the programming mode . . . . . . . . 37
5.3.3 Disabling the programming mode . . . . . . . . 37
5.4 Error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.4.1 Type of error . . . . . . . . . . . . . . . . . . . . . . . 38
5.4.2 Error message type . . . . . . . . . . . . . . . . . . . 38
5.5 MODBUS RS485 communication . . . . . . . . . . . . . 39
5.5.1 MODBUS RS485 technology . . . . . . . . . . . 39
5.5.2 MODBUS telegram . . . . . . . . . . . . . . . . . . 41
5.5.3 MODBUS function codes . . . . . . . . . . . . . . 42
5.5.4 Maximum number of writes . . . . . . . . . . . 43
5.5.5 MODBUS register addresses . . . . . . . . . . . . 43
5.5.6 MODBUS error messages . . . . . . . . . . . . . 46
5.5.7 MODBUS auto-scan buffer . . . . . . . . . . . . . 46
5.6 Operating options . . . . . . . . . . . . . . . . . . . . . . . . . 51
5.6.1 FieldCare . . . . . . . . . . . . . . . . . . . . . . . . . . 51
5.6.2 Device drivers for operating programs . . . . 51
5.7 Hardware settings . . . . . . . . . . . . . . . . . . . . . . . . . 52
5.7.1 Hardware write protection,
switching on and off . . . . . . . . . . . . . . . . . 52
5.7.2 Configuring the device address . . . . . . . . . . 53
5.7.3 Configuring the terminating resistors . . . . . 54
6 Commissioning . . . . . . . . . . . . . . . . . . 55
6.1 Function check . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
6.2 Switching on the measuring device . . . . . . . . . . . . 55
6.3 Quick Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
6.3.1 Quick Setup "Commissioning" . . . . . . . . . . 56
6.3.2 Quick Setup "Sensor" . . . . . . . . . . . . . . . . . 58
6.3.3 "Gas" Quick Setup menu . . . . . . . . . . . . . . 59
6.3.4 "Pressure" Quick Setup menu . . . . . . . . . . . 61
6.3.5 "Heat Flow" Quick Setup menu . . . . . . . . . 62
6.3.6 Quick Setup "Communication" . . . . . . . . . . 64
6.3.7 Data backup/transmission . . . . . . . . . . . . . 66
6.4 Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
6.4.1 Zero point adjustment . . . . . . . . . . . . . . . . 67
6.5 Data storage device (HistoROM) . . . . . . . . . . . . . . 68
6.5.1 HistoROM/S-DAT (sensor-DAT) . . . . . . . . 68
6.5.2 HistoROM/T-DAT (transmitter-DAT) . . . . 68
7 Maintenance . . . . . . . . . . . . . . . . . . . . 69
7.1 External cleaning . . . . . . . . . . . . . . . . . . . . . . . . . 69
7.2 Pipe cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
7.3 Transducer cleaning . . . . . . . . . . . . . . . . . . . . . . . . 69
7.4 Replacing seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
7.5 In-situ calibration . . . . . . . . . . . . . . . . . . . . . . . . . . 70
7.6 Recalibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
8 Accessories . . . . . . . . . . . . . . . . . . . . . 71
8.1 Device-specific accessories . . . . . . . . . . . . . . . . . . . 71

Proline t-mass 65 MODBUS RS485 Table of contents
4Endress+Hauser
8.2 Measuring principle-specific accessories . . . . . . . . . 71
8.3 Service-specific accessories . . . . . . . . . . . . . . . . . . 72
9 Trouble-shooting . . . . . . . . . . . . . . . . . 73
9.1 Trouble-shooting instructions . . . . . . . . . . . . . . . . . 73
9.2 System error messages . . . . . . . . . . . . . . . . . . . . . . 75
9.3 Process error messages . . . . . . . . . . . . . . . . . . . . . . 78
9.4 Process errors without messages . . . . . . . . . . . . . . 79
9.5 Response of totalizers and MODBUS communication to
errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
9.6 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
9.6.1 Removing and installing printed circuit boards
83
9.6.2 Replacing the device fuse . . . . . . . . . . . . . . 88
9.7 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
9.8 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
9.9 Software history . . . . . . . . . . . . . . . . . . . . . . . . . . 90
10 Technical data . . . . . . . . . . . . . . . . . . . 91
10.1 Technical data at a glance . . . . . . . . . . . . . . . . . . . 91
10.1.1 Applications . . . . . . . . . . . . . . . . . . . . . . . . 91
10.1.2 Function and system design . . . . . . . . . . . . 91
10.1.3 Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
10.1.4 Output . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
10.1.5 Power supply . . . . . . . . . . . . . . . . . . . . . . . 92
10.1.6 Performance characteristics . . . . . . . . . . . . 93
10.1.7 Operating conditions: Installation . . . . . . . . 94
10.1.8 Operating conditions: Environment . . . . . . 94
10.1.9 Operating conditions: Process . . . . . . . . . . 95
10.1.10 Mechanical construction . . . . . . . . . . . . . . 96
10.1.11 Human interface . . . . . . . . . . . . . . . . . . . . 98
10.1.12 Certificates and approvals . . . . . . . . . . . . . 98
10.1.13 Ordering information . . . . . . . . . . . . . . . 100
10.1.14 Accessories . . . . . . . . . . . . . . . . . . . . . . . 100
10.1.15 Documentation . . . . . . . . . . . . . . . . . . . 100
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Proline t-mass 65 MODBUS RS485 Safety instructions
Endress+Hauser 5
1 Safety instructions
1.1 Designated use
The measuring device described in these Operating Instructions is to be used only for measuring the
mass flow rate of gases (e. g. kg, Nm3scf). At the same time, the system also measures gas
temperature. The measuring device can be configured to measure a standard range of pure gases or
gas mixtures.
Examples:
•Air
• Oxygen
• Nitrogen
• Carbon Dioxide
•Argon,etc.
The use with corrosive, saturated or unclean gases should be treated with caution (contact your
Endress+Hauser sales representative). The use with unstable gases or gases not deemed to be
suitable by Endress+Hauser must be avoided. The measuring device is not designed to be used with
liquids or fluids in the liquid phase.
Resulting from incorrect use or from use other than that designated, the operational safety of the
measuring devices can be jeopardized. The manufacturer accepts no liability for damages being
produced from this.
1.2 Installation, commissioning and operation
Note the following points:
• Installation, connection to the electricity supply, commissioning and maintenance of the device
must be carried out by trained, qualified specialists authorised to perform such work by the
facility's owner operator.
The specialist must have read and understood these Operating Instructions and must follow the
instructions they contain.
• The device must be operated by persons authorised and trained by the facility's owner-operator.
Strict compliance with the instructions in the Operating Instruction is mandatory.
• Endress+Hauser is willing to assist in clarifying the chemical resistance properties of parts wetted
by special fluids, including fluids used for cleaning. However small changes in temperature,
concentration or the degree of contamination in the process can result in changes of the chemical
resistance properties. Therefore, Endress+Hauser can not guarantee or accept liability for the
chemical resistance properties of the fluid wetted materials in a specific application. The user is
responsible for the choice of fluid wetted materials in regards to their in-process resistance to
corrosion.
• If carrying out welding work on the piping, the welding unit should not be grounded by means
of the measuring device.
• The installer must ensure that the measuring system is correctly wired in accordance with the
wiring diagrams. The transmitter must be earthed unless special protection measures have been
taken e.g. galvanically isolated power supply SELV or PELV! (SELV = Safe Extra Low Voltage;
PELV = Protective Extra Low Voltage)
• Invariably, local regulations governing the opening and repair of electrical devices apply.

Safety instructions Proline t-mass 65 MODBUS RS485
6Endress+Hauser
1.3 Operational safety
Note the following points:
• 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. The symbol on the front of this supplementary Ex documentation indicates the
approval and the certification body (e.g. 0Europe, 2USA, 1Canada).
• When hot fluid passes through the measuring tube, the surface temperature of the housing
increases. In the case of the sensor, in particular, users should expect temperatures that can be
close to the fluid temperature. If the temperature of the fluid is high, implement sufficient
measures to prevent burning or scalding.
• The measuring device complies with the general safety requirements in accordance with
EN 61010-1, the EMC requirements of IEC/EN 61326, and NAMUR recommendation NE 21,
NE 43 and NE 53.
• The separate document on the Pressure Equipment Directive must be observed for devices used
in Category II or III installations in accordance with the Pressure Equipment Directive.
• The manufacturer reserves the right to modify technical data without prior notice. Your
Endress+Hauser distributor will supply you with current information and updates to these
Operating Instructions.
1.4 Return
• Do not return a measuring device if you are not absolutely certain that all traces of hazardous
substances have been removed, e.g. substances which have penetrated crevices or diffused
through plastic.
• Costs incurred for waste disposal and injury (burns, etc.) due to inadequate cleaning will be
charged to the owner-operator.
• Please note the measures on ä89
1.5 Notes on safety conventions and icons
The devices are designed to meet state-of-the-art safety requirements, have been tested, and left the
factory in a condition in which they are safe to operate. The devices comply with the applicable
standards and regulations in accordance with EN 61010-1 "Protection Measures for Electrical
Equipment for Measurement, Control, Regulation and Laboratory Procedures". They can, however,
be a source of danger if used incorrectly or for other than the designated use.
Consequently, always pay particular attention to the safety instructions indicated in these Operating
Instructions by the following icons:
#Warning!
"Warning" indicates an action or procedure which, if not performed correctly, can result in injury
or a safety hazard. Comply strictly with the instructions and proceed with care.
"Caution!
"Caution" indicates an action or procedure which, if not performed correctly, can result in incorrect
operation or destruction of the device. Comply strictly with the instructions.
!Note!
"Note" indicates an action or procedure which, if not performed correctly, can have an indirect
effect on operation or trigger an unexpected response on the part of the device.

Proline t-mass 65 MODBUS RS485 Identification
Endress+Hauser 7
2 Identification
2.1 Device designation
The "t-mass 65" flow measuring system consists of the following components:
• t-mass 65 transmitter
• t-mass F, t-mass I sensors
Two versions are available:
• Compact version: transmitter and sensor form a single mechanical unit.
• Remote version: transmitter and sensor are installed separately
2.1.1 Nameplate of the transmitter
a0005511
Fig. 1: Nameplate specifications for the "t-mass 65" transmitter (example)
1 Order code, serial number: See the specifications on the order confirmation for the meanings of the individual
letters and digits
2 Power supply, frequency, power consumption
3 Available inputs/outputs:
4Reservedforinformation on special products
5 Please refer to operating instructions / documentation
6 Reserved for certificates, approvals and for additional information on device version
7 Ambient temperature range
8 Degree of protection
Order Code:
Ser.No.:
TAG No.:
20-53VAC/16-62VDC
50-60Hz 14VA/8W
IP67/NEMA/Type4X65F25-XXXXXXXXXXXX
12345678901
ABCDEFGHJKLMNPQRST
–20°C (–4°F) < Tamb < +60°C (+140°F)
MODBUS RS485, STATUS-IN
Proline t-mass 65
i
1
2
3
4
78
5
6N12895

Identification Proline t-mass 65 MODBUS RS485
8Endress+Hauser
2.1.2 Nameplate of the sensor
a0005512
Fig. 2: Nameplate specifications for the "t-mass F" sensor (example)
1 Order code, serial number: See the specifications on the order confirmation for the meanings of the individual
letters and digits
2 Nominal diameter device
3 Pressure range
4 Temperature range
5 Material of measuring tubes
6 Seal material
7Reservedforinformation on special products
8 Please refer to operating instructions / documentation
9 Ambient temperature range
10 Degree of protection
11 Reserved for additional information on device version (approvals, certificates)
1
2
4
5
6
79
11
10
3
Proline t-mass F
ABCDEFGHIJKLMNOPQRST TAG-No.:
Ser.No.:
12345678901
Order Code:
IP67 /NEMA/Type 4X
65F50-XXXXXXXXXXXX
P:
T:
Materials:
Seal:
3.1
-0.5...40bar /-7.25...+580 psi gauge
EPDM /PEEK
316/316L/1.4404/Alloy C 22-(2.4602)
-40°C...+100°C /-40°F...+212°F
-20°C(-4°F)<Tamb<+60°C(+140°F)
i
DN50 DIN/EN PN40
N12895
8

Proline t-mass 65 MODBUS RS485 Identification
Endress+Hauser 9
2.1.3 Nameplate for connections
A0005513
Fig. 3: Nameplate specifications for transmitter connections (example)
1 Serial number
2 Possible configuration of current output
3 Possible configuration of relay contacts
4 Terminal assignment, cable for power supply: 85 to 260 V AC, 20 to 55 V AC, 16 to 62 V DC
Terminal No. 1: L1 for AC, L+ for DC
Terminal No. 2: N for AC, L– for DC
5 Signals present at inputs and outputs, possible configuration and terminal assignment (20 to 27),
see also "Electrical values of inputs/outputs", ä92
6 Version of device software currently installed
7 Installed communication type
8 Information on current communication software
9 Date of manufacture
10 Current updates to data specified in points 6 to 9
X
X
Communication:
Drivers:
Device SW: XX.XX.XX
XXXXXXXXXXXXXXXX
Date: 01. MAI 2009
Ex-works / ab-Werk / réglages usine
26(+) / 27(-)
NC:
Versorgung/
Tension d'alimentation
Observer manuel d'instruction
See operatingmanual
Betriebsanleitungbeachten
XXXXXXXXXXXSer.No.:
Supply /
24(+) / 25(-)
22(+) / 23(-)
20(+) / 21(-)
N/L-
PE
A:
NO:
P:
L1/L+
12
319475-00XX
active
passive
normally open contact
normally closed contact
Update 1 Update 2
2
3
1
4
5
6
7
8
9
10
MODBUS RS485
STATUS-IN
27 = A (RxD/TxD-N)
26 = B (RxD/TxD-P)
3...30VDC, Ri = 3 kOhm

Identification Proline t-mass 65 MODBUS RS485
10 Endress+Hauser
2.2 Certificates and approvals
The devices are designed in accordance with good engineering practice to meet state-of-the-art
safety requirements, have been tested, and left the factory in a condition in which they are safe to
operate. The devices comply with the applicable standards and regulations in accordance with
EN 61010-1 "Protection Measures for Electrical Equipment for Measurement, Control, Regulation
and Laboratory Procedures" and with the EMC requirements of IEC/EN 61326.
The measuring system described in these Operating Instructions thus complies with the statutory
requirements of the EC Directives. Endress+Hauser confirms successful testing of the device by
affixing to it the CE mark.
The measuring system meets the EMC requirements of the Australian Communications and Media
Authority (ACMA).
The measuring device meets all the requirements of the MODBUS/TCP conformity test and holds
the "MODBUS/TCP Conformance Test Policy, Version 2.0". The measuring device has successfully
passed all the test procedures carried out and is certified by the "MODBUS/TCP Conformance Test
Laboratory" of the University of Michigan.
2.3 Registered trademarks
KALREZ®and VITON®
Registered trademarks of E.I. Du Pont de Nemours & Co., Wilmington, USA
MODBUS™
Registered trademark of the MODBUS Organization
HistoROM™, S-DAT®, T-DAT™, F-CHIP®, FieldCare®, Fieldcheck®, Applicator®, t-mass®
Registered or registration-pending trademarks of Endress+Hauser Flowtec AG, Reinach, CH

Proline t-mass 65 MODBUS RS485 Installation
Endress+Hauser 11
3 Installation
3.1 Incoming acceptance, transport and storage
3.1.1 Incoming acceptance
On receipt of the goods, check the following points:
• Check the packaging and the contents for damage.
• Check the shipment, make sure nothing is missing and that the scope of supply matches your
order.
3.1.2 Transport
The following instructions apply to unpacking and to transporting the device to its final location:
• Transport the devices in the containers in which they are delivered.
• The covers or caps fitted to the process connections prevent mechanical damage to the
transducers during transportation and storage. Consequently, do not remove these covers or caps
until immediately before installation.
• Do not lift measuring devices of nominal diameters > DN 40 (> 1½") by the transmitter housing
or the connection housing in the case of the remote version (å4). Use webbing slings slung
round the two process connections. Do not use chains, as they could damage the housing.
#Warning!
Risk of injury if the measuring device slips. The center of gravity of the assembled measuring device
might be higher than the points around which the slings are slung.
At all times, therefore, make sure that the device does not unexpectedly turn around its axis or slip.
a0004294
Fig. 4: Instructions for transporting sensors with > DN 40 (> 1½")
3.1.3 Storage
Note the following points:
• Pack the measuring device in such a way as to protect it reliably against impact for storage (and
transportation). The original packaging provides optimum protection.
• The permissible storage temperature is –40 to +80 °C (–40 °F to +176 °F).
Preferably +20 °C (+68 °F).
• Do not remove the protective covers or caps on the process connections until you are ready to
install the device.
• The measuring device must be protected against direct sunlight during storage in order to avoid
unacceptably high surface temperatures.
• Devices delivered with special sealing or bagging for oxygen service must remain sealed or bagged
until ready for installation.

Installation Proline t-mass 65 MODBUS RS485
12 Endress+Hauser
3.2 Installation conditions
Note the following points:
• The thermal dispersion principle is very sensitive to disturbed flow conditions.
• Observe the recommended inlet and outlet requirements.
• Good engineering practice is necessary for the associated pipe work and installation.
• Ensure correct alignment and orientation of the sensor.
• Take measures to reduce or avoid condensation (e.g. install a condensation trap, thermal
insulation, etc.).
• The maximum permitted ambient temperatures and the medium temperature range (ä95)
must be observed.
• Install the transmitter in a shaded location or use a protective sun shield.
• For mechanical reasons, and in order to protect the pipe, it is advisable to support heavy sensors.
3.2.1 Dimensions
The dimensions and installation lengths of the sensor and transmitter can be found in the "Technical
Information" for the device in question. This document can be downloaded as a PDF file from
www.endress.com. A list of the "Technical Information" documents available is provided in the
"Documentation" section on ä100.
3.2.2 System pressure and pulsating flow
Reciprocating pumps and some compressor systems can create strong changes in process pressure
that can induce spurious internal flow patterns and therefore cause additional measurement error.
These pressure pulses must be reduced by the appropriate measures:
• Use of expansion tanks
• Use of inlet expanders
• Relocate the flowmeter further downstream
In compressed air systems, it is recommended to mount the flowmeter after the filter, dryer and
buffer devices to avoid pulsations and oil/dirt contamination. Do not mount the flowmeter directly
after the compressor outlet.

Proline t-mass 65 MODBUS RS485 Installation
Endress+Hauser 13
3.2.3 Pipework requirements
Good engineering practice should be followed at all times:
• Correct preparation, welding and finishing techniques
• Correctly sized gaskets
• Correctly aligned flanges and gaskets
• Connecting pipe work should match the internal diameter of the flowmeter.
Maximum pipe diameter mismatch should not exceed:
– 1 mm (0.04 inch) for diameters < DN 200 (8")
– 3 mm (0.12 inch) for diameters DN 200 (8")
For further information please refer to ISO 14511.
"Caution!
New installations should be free of metallic and abrasive particles to prevent damage to the sensing
elements on start-up.
a0005103
Correctly aligned flanges and gaskets
a0005104 a0005105 a0005106
Pipe diameter one is not equal pipe
diameter two
Incorrectly sized gaskets Incorrectly aligned flanges and gaskets
Ã
✘
✘
✘

Installation Proline t-mass 65 MODBUS RS485
14 Endress+Hauser
3.2.4 Orientation
Make sure that the direction arrow on the sensor matches the direction of gas flow through the pipe.
Flanged sensor Insertion sensor
Vertical orientation
A0013785
compact
ÃÃ
m
remote
ÃÃ
m
compact
Ã
m,n
remote
ÃÃ
m
Horizontal orientation, transmitter head up
A0013786
compact/remote
ÃÃ
n
Horizontal orientation, transmitter head down
A0013787
compact/remote
Ã
o
Inclined orientation, transmitter head down
A0009897
compact/remote
Ã
p
ÃÃ = Recommended orientation
Ã= Orientation recommended in certain situations
m In the case of saturated or unclean gases, upward flow in a vertical pipe section is preferred to minimize
condensation/contamination.
n Not recommended if the vibrations are too high or if the installation is unstable.
oOnly suitable for clean/dry gases. Do not mount the sensor from the bottom, on horizontal pipes, if build-up or
condensate are likely to be present. Mount the sensor in a position as indicated below
pIf the gas is very damp or saturated with water (e. g. Bio Gas), mount in inclined orientation (max. 135°).

Proline t-mass 65 MODBUS RS485 Installation
Endress+Hauser 15
3.2.5 Inlet and outlet runs
The thermal dispersion principle is sensitive to disturbed flow conditions.
As a general rule, the thermal flowmeter should always be installed as far away as possible from any
flow disturbances. For further information please refer to ISO 14511.
!Note!
• Where two or more flow disturbances are located upstream of the meter, the longest indicated
inlet length should prevail. For example if a control valve and a bend are mounted upstream of
the flowmeter, the recommended inlet length should be according to the control valve (50 × DN).
• For very light gases such as Helium and Hydrogen all upstream distances should be doubled.
The minimum recommendations for inlet and outlet runs (without flow conditioner) are:
Flanged sensor
Insertion sensor
!Note!
A specially designed perforated plate flow conditioner can be installed if it is not possible to observe
the inlet runs required (ä16).
1
a0007523
2
a0007524
3
a0007525
4
a0007526
5
a0007527
6
a0007528
1 = Reduction, 2 = Expansion, 3 = 90° elbow or T-piece, 4 = 2 × 90° elbow, 5 = 2 × 90° elbow (3-dimensional),
6 = Control valve
1
a0007529
2
a0007530
3
a0007531
4
a0007532
5
a0007564
6
a0007534
1 = Reduction, 2 = Expansion, 3 = 90° elbow or T-piece, 4 = 2 × 90° elbow, 5 = 2 × 90° elbow (3-dimensional),
6 = Control valve or pressure regulator
15xDN 2xDN
15xDN 2xDN
15xDN 2xDN
20xDN 2xDN
35xDN 2xDN
50xDN 2xDN
20xDN 5xDN
20xDN 5xDN
20xDN 5xDN
25xDN 5xDN
40xDN 5xDN
50xDN 5xDN

Installation Proline t-mass 65 MODBUS RS485
16 Endress+Hauser
Outlet runs with pressure measuring points
The pressure measuring point should be installed downstream of the measuring device, so that there
is no potential influence of the pressure transmitter process connection on the flow entering the
measuring point.
a0005114
Fig. 5: Installing a pressure measuring point (PT = pressure transmitter)
Perforated plate flow conditioner
It is recommended to install a perforated plate flow conditioner if the recommended inlet runs are
not available. See accessories ä71.
a0005115
Fig. 6: The figure above illustrates the minimum recommended inlet and outlet runs expressed in multiples of the pipe
diameter using a flow conditioner.
1 = Flow conditioner with the flanged sensor, 2 = Flow conditioner with the insertion sensor
Flow conditioner for use with insertion sensors
The well known "Mitsubishi" design is recommended for this application DN 80 mm (3") to
DN 300 mm (12"). The flow conditioner must be installed at a distance of 8 × DN upstream of the
sensor. A further 5 pipe diameters inlet run is required upstream of the actual conditioner itself.
PT
2...5xDN
2×DN5 ×DN 8×DN 5 ×DN
5×DN
2
1

Proline t-mass 65 MODBUS RS485 Installation
Endress+Hauser 17
Flow conditoner for use with flanged sensors
This is a special Endress+Hauser version designed specially for use with the t-mass F sensor (sizes
DN 25 to 100 / 1" to 4"). The mounting hole patterns and sizing are of a multi-variant design which
means that one plate will fit different flange pressure classes e.g. Cl. 150 and Cl. 300.
The flow conditioner and gaskets are fitted between two pipe flange and the flow meter
flange å7 .
Use only bolts which match to tehflange bolt hole and this will ensure that the correct positioning
of the plate can be found. The alignment notch must also be pointing in the same plane as the
transmitter.
Incorrect installation of the flow conditioner will have a small effect on the measurement accuracy.
a0005116
Fig. 7: Flow conditioner mounting arrangement (example)
1 = perforated plate flow conditioner, 2 = aeal/gasket, 3 = alignment notch, 4 = alignment in the same plane as the
transmitter
!Note!
• For optimum performance, it is advised that the t-mass F sensor and flow conditioner are ordered
at the same time such that they are calibrated together. To retrospectively fit a flow conditioner
will have a small effect on the measurement performance.
• The use of other types of flow conditioners, other than the Endress+Hauser flow conditioner, with
the t-mass F sensor will have an impact on the measurement performance due to the effects of
flow profile and pressure drop.
• Bolts, nuts, seals, etc. are not included in the scope of supply and must be supplied by the
customer.
1
22
3
4
✘
Ã
Ã
1
1
1

Installation Proline t-mass 65 MODBUS RS485
18 Endress+Hauser
3.2.6 Heating
Some applications require suitable measures to avoid heat loss (condensation). Heating can be
electric, e. g. with heated elements, or by means of hot water, steam pipes or insulation.
"Caution!
Risk of electronics overheating! Consequently, make sure that the adapter between sensor and
transmitter and the connection housing of the remote version always remain free of insulating
material.
3.2.7 Thermal insulation
When the gas is very damp or saturated with water (e. g. bio gas), the piping and flowmeter body
should be insulated to prevent water droplets condensing on the measuring sensor.
a0005122
Fig. 8: Maximum thermal insulation for t-mass 65F and 65I
a Maximum insulation height for the flanged sensor
b Maximum insulation height for the insertion sensor
3.2.8 Vibrations
"Caution!
Excessive vibration can result in mechanical damage to the measuring device and its mounting.
Observe the vibration spezification in the technical data section ä94
aa
bb

Proline t-mass 65 MODBUS RS485 Installation
Endress+Hauser 19
3.3 Installation instructions
3.3.1 Mounting the insertion sensor
The sensor can be mounted into a welding socket or a retractable mounting set. If a retractable
mounting set is being used, then refer to the supplementary documentation delivered with the
mounting set.
Mounting the welding socket
This instruction describes mounting of the Endress+Hauser welding socket. If an existing or
customer-specific mounting set is being used, then go to the next section "Insertion depth
calculation and adjustment".
!Note!
• Take the orientation and inlet and outlet runs into account before mounting the welding
socketä14 ff.
• The welding socket is made of stainless steel 1.4404 (316/316L). Use appropriate welding
technique.
"Caution!
When mounting the fitting to a thin wall duct, use a suitable support bracket for the sensor and weld
the welding socket to a base plate to spread the load. Otherwise, the mounting may be unstable and
the duct wall can be damaged.
#Warning!
• These instructions are only applicable to installation in an un-pressurized line, without gas present
and at safe temperatures.
1. Drill or cut hole of Ø 31.0 mm ± 0.5 mm (1.22" ± 0.019") in the pipe.
2. Deburr the hole.
3. Fit the edge of the welding socket into hole, align it vertically and weld it on å9.
A0010098
Fig. 9: Positioning the welding socket on the pipe (or duct)
Insertion depth calculation and adjustment
To obtain the best measurement results, it is important that the sensor is inserted at the right
insertion depth in the pipe/duct. A millimeter and inch scale is provided along the entire length of
the sensor tube. This makes it possible to align the sensor at the right depth.
4. Calculate the insertion depth:
– with the help of the Quick Setup "Sensor" ä58 or
– using the following dimensions and formulae
90°
90°

Installation Proline t-mass 65 MODBUS RS485
20 Endress+Hauser
A0005118
Fig. 10: Dimensions needed to calculate the insertion depth
A Pipes: internal diameter
Ducts: internal dimension
B Wall thickness
C Dimension from pipe/duct to the compression fitting
!Note!
For detailed remarks on calculation refer to Technical Information TI069D.
• Calculated insertion depth (SI units)= 0.3 · A + B + C + 2 mm
• Calculated insertion depth (US units) = 0.3 · A + B + C + 0.079 inch
Note down the calculated value.
A0010001
Fig. 11: Aligning the sensor to the calculated insertion depth
5. Insert the sensor into the socket (1) and tighten the lower nut of compression fitting (2) first
by hand and then tighten it 1¼ revolutions using a wrench (42 mm).
"Caution!
– NPT thread: use a thread sealing tape or paste
– G 1 A thread: the sealing ring supplied must be installed
6. Tighten the upper nut of compression fitting (3) such that the sensor can still be adjusted.
7. Read off the calculated insertion depth from the scale and adjust the sensor so that the value
aligns with the upper end of the compression fitting (4).
A B C A B C
230
220
210
200
190
180
9
8
7
230
220
210
200
190
180
9
8
7
230
220
210
200
190
180
9
8
7
1
3
4
2
230
220
210
200
190
180
9
8
7