ABB SensyMaster FMT430 User manual

—
ABB MEASUREMENT & AN
ALYTICS | OPERATING INSTRUCTION | OI/FMT430/450-EN REV. B
SensyMaster FMT430, FMT450
Thermal mass flowmeter
—
ABB Measurement & Analytics
For your local ABB
contact, visit:
www.abb.com/contacts
For more product information, visit:
www.abb.com/flow
Precise and dynamic direct mass
flow measurement of gas in
industrial applications
Measurement made easy
OI/FMT430/450
-EN Rev. B 08.2020
—
SensyMaster FMT430
SensyMaster FMT450
Introduction
The
SensyMaster FMT430 is a top-quality cost-
effective solution for the precise and direct
dynamic mass flow measurement of gases at low
and medium operating pressure levels, which
fulfills the requirements of any industrial
application.
In addition, the FMT4
50 offers the highest level of
accuracy and extended functionality for
demanding industrial applications.
Additional Information
Additional documentation on
SensyMaster FMT430,
FMT450
is available for download free of charge at
www.abb.com/
flow.
Alternatively simply scan this code:
—
We reserve the right to make technical changes or modify the contents of this
document
without prior
notice. With regard to purchase orders, the agreed particulars shall prevail.
ABB does not accept any
responsibility whatsoever for potential errors or possible lack of
information in this document.
We reserve all rights in this
document and in the subject matter and illustrations contained
therein.
Any reproduction, disclosure to third parties or utilization of its contents – in whole
or in parts
– is forbidden without prior written consent of ABB.
© ABB 2020 3KXF421015R4201

2 SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B
Table of contents
1Safety..........................................................................4
General information and instructions..................................4
Warnings....................................................................................4
Intended use .............................................................................4
Improper use.............................................................................5
Notes on data safety ...............................................................5
Warranty provisions.................................................................5
Manufacturer’s address ..........................................................5
2Use in potentially explosive atmospheres .............6
Device overview ........................................................................6
ATEX / IECEx ........................................................................6
cFMus .................................................................................... 7
Ex marking.................................................................................8
ATEX / IECEx ........................................................................8
cFMus ....................................................................................9
Temperature data ..................................................................10
Temperature resistance for the connecting cable......10
Environmental and process conditions for model
FMT4xx… ............................................................................10
Electrical data ......................................................................... 13
Overview ............................................................................. 13
Zone 0, 1, 21 and Division 1 – Model: FMT4xx-A1,
FMT4xx-F1...........................................................................14
Zone 2, 22 and Division 2 – Model: FMT4xx-A2, FMT4xx-
F2.......................................................................................... 15
Special connection conditions........................................ 16
Installation instructions........................................................ 17
ATEX / IECEx ...................................................................... 17
cFMus .................................................................................. 17
Use in areas exposed to combustible dust .................. 17
Opening and closing the housing .................................. 17
Cable entries in accordance with ATEX / IECEx...........18
Cable entries in accordance with cFMus....................... 18
Electrical connections ......................................................19
Process sealing .................................................................. 19
Operating instructions..........................................................20
Protection against electrostatic discharges................20
Devices with dual-compartment housing with type of
protection Ex ‘d’ flameproof (enclosure)......................20
Repair...................................................................................20
Changing the type of protection.................................... 21
3Design and function ................................................ 22
Overview ..................................................................................22
Sensor..................................................................................22
Process connections.........................................................23
Transmitter .............................................................................24
Device description .................................................................25
Measuring principle ...............................................................25
4Product identification............................................ 26
Name plate.............................................................................. 26
Plates and symbols................................................................ 26
5Transport and storage ............................................27
Inspection ............................................................................... 27
Transport ................................................................................ 27
Storing the device.................................................................. 27
Ambient conditions.......................................................... 27
Returning devices .................................................................. 27
6Installation............................................................... 28
Safety instructions ................................................................ 28
Installation conditions.......................................................... 28
Installation location and assembly................................ 28
Inlet and outlet sections.................................................. 29
Installation at high ambient temperatures.................. 30
Sensor insulation ..............................................................30
Ambient conditions...............................................................30
Ambient temperature ......................................................30
Process conditions ................................................................ 30
Measured medium temperature .................................... 30
Material loads for process connections ........................31
Assembly of the pipe component....................................... 32
Wafer type design (FMT091) and partial measuring
section (FMT092)................................................................... 32
Assembly of the welding adapter with flange or threaded
connector ................................................................................ 34
Welding adapter with flange connector ....................... 34
Welding adapter with threaded connection in
accordance with DIN 11851.............................................. 36
Mounting ............................................................................ 37
Assembly of the welding adapter with compression ring
fitting ....................................................................................... 38
Mounting ............................................................................ 39
Assembly of the welding adapter with hot tap fitting ... 42
Installing the sensor.............................................................. 43
Wafer type design and welding adapter ...................... 43
Installation / Disassembly in connection with the hot
tap fitting ...........................................................................44
Installing the transmitter in the remote mount design .46
Opening and closing the housing....................................... 47
Rotating the transmitter housing and LCD display ...48
Installing the plug-in cards ..................................................50

SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B 3
7Electrical connections.............................................54
Safety instructions................................................................ 54
Power supply.......................................................................... 54
Cable entries ...........................................................................55
Installing the connection cables..........................................55
Signal cable.........................................................................55
Pin assignment .......................................................................56
Electrical data for inputs and outputs ...............................57
Connection examples .......................................................62
Connection to integral mount design ............................... 64
Connection to remote mount design................................ 66
Transmitter ....................................................................... 66
Flowmeter sensor ............................................................ 68
Digital communication......................................................... 69
HART® Communication ................................................... 69
Modbus® communication............................................... 69
Cable specification ...........................................................70
PROFIBUS DP® communication ......................................70
8Commissioning........................................................ 72
Safety instructions.................................................................72
Hardware settings ................................................................. 72
Dual- compartment housing ........................................... 72
Single-compartment housing .........................................73
Configuration of digital outputs V1 / V2 or V3 / V4....73
Checks prior to commissioning ..........................................74
Parameterization of the device ...........................................74
Parameterization via the local operating interface ....74
Parameterization via the infrared service port adapter
..............................................................................................75
Parameterization via HART®............................................75
Switching on the power supply ...........................................75
Parameterization via the menu function Easy Setup ......76
9Operation ................................................................. 81
Safety instructions.................................................................81
Menu navigation..................................................................... 81
Menu levels ..............................................................................82
Process display.......................................................................83
Switching to the information level......................................83
Error messages on the LCD display.............................. 84
Switching to the configuration level (parameterization)
84
Selecting and changing parameters..............................85
Parameter overview...............................................................87
Parameter descriptions ....................................................... 96
Available units ................................................................... 96
Available gas types............................................................97
Available process variables............................................. 98
Menu: Easy Setup ............................................................. 99
Menu: Device Info ............................................................102
Menu: Device Setup.........................................................106
Menu: Display ....................................................................111
Menu: Input/Output ....................................................... 113
Menu: Process Alarm ...................................................... 118
Menu: Communication ................................................... 119
Menu: Diagnostics ...........................................................122
Menu: Totalizer................................................................ 125
Software history .................................................................. 126
FillMass batch function .......................................................127
Setup ..................................................................................127
10 Diagnosis / error messages .................................128
Calling up the error description ........................................ 128
General................................................................................... 128
Overview................................................................................ 129
Error messages .....................................................................131
‘SensorCheck’ diagnosis function .................................... 134
Assessment of the result............................................... 134
11 Maintenance ...........................................................135
Safety instructions .............................................................. 135
Sensor .................................................................................... 136
Cleaning................................................................................. 136
Cleaning the sensor element ........................................ 136
Integrated hot tap fitting................................................... 136
12 Repair ......................................................................138
Safety instructions .............................................................. 138
Spare parts ........................................................................... 138
Replacing the fuse ............................................................... 139
Replacing the LCD indicator .............................................. 140
Replacing the slide-in...........................................................141
Integral mount design ....................................................141
Remote mount design ................................................... 142
Replacing the sensor........................................................... 143
Returning devices ................................................................ 143
13 Dismounting and disposal................................... 144
Dismounting......................................................................... 144
Disposal ................................................................................. 144
14 Specification ......................................................... 145
15 Additional documents.......................................... 145
16 Appendix ................................................................ 146
Return form........................................................................... 146
FMT400 Installation diagram 3kxf000094G0009......... 147

4 SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B
1Safety
General information and instructions
These instructions are an important part of the product and
must be retained for future reference.
Installation, commissioning, and maintenance of the product
may only be performed by trained specialist personnel who have
been authorized by the plant operator accordingly. The specialist
personnel must have read and understood the manual and must
comply with its instructions.
For additional information or if specific problems occur that are
not discussed in these instructions, contact the manufacturer.
The content of these instructions is neither part of nor an
amendment to any previous or existing agreement, promise or
legal relationship.
Modifications and repairs to the product may only be performed
if expressly permitted by these instructions.
Information and symbols on the product must be observed.
These may not be removed and must be fully legible at all times.
The operating company must strictly observe the applicable
national regulations relating to the installation, function testing,
repair and maintenance of electrical products.
Warnings
The warnings in these instructions are structured as follows:
DANGER
The signal word ‘DANGER’ indicates an imminent danger.
Failure to observe this information will result in death or
severe injury.
WARNING
The signal word ‘WARNING’ indicates an imminent danger.
Failure to observe this information may result in death or
severe injury.
CAUTION
The signal word ‘CAUTION’ indicates an imminent danger.
Failure to observe this information may result in minor or
moderate injury.
NOTICE
The signal word ‘NOTICE’ indicates possible material damage.
Note
‘Note’ indicates useful or important information about the
product.
Intended use
This device can be used in the following applications:
• As a plug-in sensor flanged into the pipe component in
piping with nominal diameters DN 25 to 200 (1 to 8 in).
• Through a welding adapter directly in piping of nominal
diameter DN 100 (4 in) and above, as well as for non-
circular cross-sections.
This device is intended for the following uses:
• for direct mass flow measurement of gases and gas
mixtures in closed pipelines.
• for indirect measurement of volume flows
(through standard density and mass current).
• for measuring the temperature of the measuring
medium.

SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B 5
The device has been designed for use exclusively within the
technical limit values indicated on the identification plate and in
the data sheets.
When using measuring media, the following points must be
observed:
• Measuring media may only be used if, based on the state
of the art or the operating experience of the user, it can
be assured that the chemical and physical properties
necessary for operational security of the materials of the
wetted parts of the temperature sensor will not be
adversely affected during the operating time.
• Media containing chloride in particular can cause
corrosion damage to stainless steels which, although not
visible externally, can damage wetted parts beyond repair
and lead to the measuring medium escaping. It is the
operator's responsibility to check the suitability of these
materials for the respective application.
• Measuring media with unknown properties or abrasive
measuring media may only be used if the operator is able
to perform regular and suitable tests to ensure the safe
condition of the device
Improper use
The following are considered to be instances of especially
improper use of the device:
• Operation as a flexible compensating adapter in piping,
for example for compensating pipe offsets, pipe
vibrations, pipe expansions, etc.
• For use as a climbing aid, for example for mounting
purposes.
• For use as a bracket for external loads, for example as a
support for piping, etc.
• Material application, for example by painting over the
housing, name plate or welding/soldering on parts.
• Material removal, for example by spot drilling the
housing.
Notes on data safety
This product is designed to be connected to and to
communicate information and data via a network interface.
It is operator’s sole responsibility to provide and continuously
ensure a secure connection between the product and your
network or any other network (as the case may be).
Operator shall establish and maintain any appropriate measures
(such as but not limited to the installation of firewalls,
application of authentication measures, encryption of data,
installation of anti-virus programs, etc.) to protect the product,
the network, its system and the interface against any kind of
security breaches, unauthorized access, interference, intrusion,
leakage and / or theft of data or information.
ABB Automation Products GmbH and its affiliates are not liable
for damages and / or losses related to such security breaches,
any unauthorized access, interference, intrusion, leakage and /
or theft of data or information.
Warranty provisions
Using the device in a manner that does not fall within the scope
of its intended use, disregarding this manual, using
underqualified personnel, or making unauthorized alterations
releases the manufacturer from liability for any resulting
damage. This renders the manufacturer's warranty null and void.
Manufacturer’s address
ABB Automation Products GmbH
Measurement & Analytics
Schillerstr. 72
32425 Minden
Germany
Tel: [phone]
Fax: [phone]
Customer service center
Tel: [phone]
Email: automation.servi[email protected]bb.com

6 SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B
2Use in potentially explosive atmospheres
Note
Further information on the Ex-Approval of devices can be found in the type examination certificates or the relevant certificates at
www.abb.com/flow .
Device overview
ATEX / IECEx
Standard / No explosion protection
Zones 2, 22
Zone 1, 21 (Zone 0)
Model number
FMT4x0 Y0 FMT4x0 A2 FMT4x0 A1
Integral mount design
•
Standard
•
Zone 2, 22
•
Zone 1, 21
•
Zone 0
Model number
FMT4x2 Y0 FCx4x0 Y0 FMT4x2 A2 FCx4x0 A2 FMT4x2 A1 FCx4x0 A1
Remote mount design
Transmitter and
flowmeter sensor
•
Standard
•
Zone 2, 22
•
Zone 1, 21
•
Zone 0
Model number
FMT4x2 Y0
FMT4x0 A2
FCx4x0 A1
Remote mount design
Transmitter
•
Standard
•
Zone 2, 22
Sensor
•
Zone 1, 21
• Zone 0
Model number
— FMT4x2 A2 FCx4x0 A1
Remote mount design
Transmitter
•
Zone 2, 22
Sensor
•
Zone 1, 21
•
Zone 0
—
1
Single-compartment housing
2
Dual-compartment housing
3
Zone 0 within the meter tube

SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B 7
cFMus
Standard / No explosion protection
Class I Div. 2 / Zone 2
Class I Div. 1 / Zone 1 (Zone 0)
Model number
FMT4x0 Y0
FMT4x0 F2
FMT4x0 F1
Integral mount design
•
Standard
•
Div. 2 / Zone 2
•
Div. 1 / Zone 1
Model number
FMT4x2 Y0 FMT4x0 Y0 FMT4x2 F2 FMT4x0 F2 FMT4x2 F1 FMT4x0 F1
Remote mount design
Transmitter and
flowmeter sensor
•
Div. 2 / Zone 2
•
Div. 1 / Zone 1
Model number
FCT4x2 Y0
FCT4x0 F2
FMT4x0 F1
Remote mount design
Transmitter
•
Standard
Sensor
•
Div. 2 / Zone 2
•
Div. 1 / Zone 1
Model number
—
FMT4x2 F2
FMT4x0 F1
Remote mount design
Transmitter
•
Div. 2 / Zone 2
Sensor
•
Div. 1 / Zone 1
—
1
Single-compartment housing
2
Dual-compartment housing

8 SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B
… 2 Use in potentially explosive atmospheres
Ex marking
ATEX / IECEx
Note
• A specific marking applies, depending on the design.
• ABB reserves the right to modify the Ex-marking. Refer to the name plate for the exact marking.
Model number design*: FMTabcdefghijkl.m.n.o.p
* For detailed information on the design of the model number, see the ordering information in the data sheet
Model number for use in Zone 2, 22
Ex marking
Certificate
FMT4x0
– A2 (i=D..,Y..,S..)
Sensor in integral mount design or remote mount
design with single
-compartment or dual-
compartment housing
II 3G Ex ec IIC T6...T1 Gc
II 3D Ex tc IIIC T80°C...T
medium Dc
ATEX:
FM19ATEX0178X
IECEx:
IECEx FMG
19.0025X
FMT4x2
– A2 (i=W..,R..)
Sensor in remote mount design with single
-
compartment housing
II 3G Ex ec IIC T6 Gc
II 3D Ex tc IIIC T80°C Dc
Model number for use in Zone 0/1, 21
Ex marking
Certificate
FMT4x0
– A1 (i=D1...D8)
Sensor in
integral mount design with dual-
compartment housing
II 2 G Ex db eb ib mb IIC T6...T1 Gb
II 2 G Ex ia IIC T6...T1 Gb
II 2 D Ex ia tb IIIC T80°C...T
medium Db
IN
-/OUTPUTS: Urated=30V
ATEX:
FM19ATEX0177X
IECEx:
IECEx FMG 19.0025X
FMT4x0
– A3 (i=D1...D8)
Sensor in integral mount design with dual
-
compartment housing (Zone
0 in meter tube)
II 1/2 G Ex db eb ib mb IIC T6...T1 Gb/Ga
II 1 G Ex ia IIC T6...T1 Ga
II 2 D Ex ia tb IIIC T80°C...T
medium Db
IN-/OUTPUTS: Urated=30V
FMT4x0
– A1 (i=Y0)
Sensor in remote mount design with dual
-
compartment housing
II 2 G Ex eb ib mb IIC T6...T1 Gb
II 2 G Ex ia IIC T6...T1 Gb
II 2 D Ex tb IIIC T80°C...T
medium Db
IN
-/OUTPUTS: Urated=30V
FMT4x0
– A3 (i=Y0)
Sensor in remote mount design with dual
-
compa
rtment housing (Zone 0 in meter tube)
II 1/2 G Ex eb ia ib mb IIC T6...T1 Gb/Ga
II 1 G Ex ia IIC T6...T1 Ga
II 2 D Ex tb IIIC T80°C...T
medium Db
IN-/OUTPUTS: Urated=30V
FMT4x0
– A1 (i=R1...R4)
Transmitter in remote mount design with
dual-
compartment housing
II 2 G Ex db eb ia mb IIB+H2 T6 Gb
II 2 D Ex ia tb IIIC T80°C Db
IN
-/OUTPUTS: Urated=30V
FMT4x0
– A1 (i=R5...R8)
Transmitter in remote mount design with dual
-
compartment housing
(flameproof enclosure ‘Ex d’)
II 2 G Ex db ia IIB
+H2 T6 Gb
II 2 D Ex ia tb IIIC T80°C Db
IN
-/OUTPUTS: Urated=30V

SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B 9
cFMus
Note
• A specific marking applies, depending on the design.
• ABB reserves the right to modify the Ex-marking. Refer to the name plate for the exact marking.
Model number design*: FMTabcdefghijkl.m.n.o.p
* For detailed information on the design of the model number, see the ordering information in the data sheet
Model number for use in Division 2
Ex marking
FMT4x0
- F2 (i=D..,Y..,S..)
Sensor in integral mount design with single
-
compartment or dual
-compartment housing.
Design in accordance with
ANSI / ISA 12.27.01 as ‘
Dual
Seal Device
’.
USA:
Certificate:
FM19US0110X
NI: CL I, Div 2, GPS ABCD T6...T1
DIP: CL II,III, Div 2, GPS EFG T6...T
3B
CL I, ZN 2, AEx ec IIC T6...T1 Gc
ZN 21, AEx tb IIIC T80°C...T165°C Db
See handbook for temperature class information
Canada:
Certificate:
FM19CA0055X
NI: CL I, Div 2, GPS ABCD T6...T1
DIP: CL II,III, Div 2, GPS EFG T6...T3B
CL I, ZN 2, Ex ec IIC
T6...T1 Gc
Ex tb IIIC T80°C...T165°C Db
ANSI/ISA 12.27.01: Dual Seal
FMT4x2
- F2 (i=W..,R..)
Transmitter in remote mount design with single
-
compartment or dual
-compartment housing.
USA:
Certificate:
FM19US0110X
NI: CL I, Div 2, GPS ABCD T6
DIP: CL II,III,
Div 2, GPS EFG T6
CL I, ZN 2, AEx ec IIC T6 Gc
ZN 21, AEx tb IIIC T80°C Db
See handbook for temperature class information
Canada:
Certificate:
FM19CA0055X
NI: CL I, Div 2, GPS ABCD T6
DIP: CL II,III, Div 2, GPS EFG T6
CL I, ZN 2, Ex ec IIC T6 Gc
Ex tb
IIIC T80°C Db
Model number for use in Division 1
Ex marking
FMT4x0
– F1 (i=D1...D8)
Sensor in integral mount design or remote mount
design with dual
-compartment housing.
Design in accordance with
ANSI / ISA 12.27.01 as ‘
Dual
Seal Device
’.
USA:
Certificate:
FM19US0110X
S
-XP-IS: CL I, Div 1, GPS ABCD T6...T1
DIP: CL II,III, Div 1, GPS EFG T6...T3B
CL I, ZN 1, AEx db eb ia mb IIB+H2 T6...T1 Gb
ZN 21, AEx ia tb IIIC T80°C...T165°C Db
See handbook for temperature class information and
installation drawing 3kxf000094G0009
Canada:
Certificate:
FM19CA0055X
S
-XP-IS: CL I, Div 1, GPS BCD T6...T1
DIP: CL II,III, Div 1, GPS EFG T6...T3B
CL I, ZN 1, AEx db eb ia mb IIB+H2 T6...T1 Gb
Ex ia tb IIIC T80°C...T165°C Db
IN
-/OUTPUTS: Urated=30V
ANSI/ISA 12.27.01: Dual Seal
FMT4x0
– F1 (i=Y0)
Sensor in remote mount design.
Design in accordance with
ANSI / ISA 12.27.01 as ‘
Dual
Seal Device
’.
USA:
Certificate:
FM19US0110X
S
-XP: CL I, Div 1, GPS ABCD T6...T1
DIP: CL II,III, Div 1, GPS EFG
T6...T3B
CL I, ZN 1, AEx db eb mb IIB+H2 T6...T1 Gb
ZN 21, AEx tb IIIC T80°C...T165°C Db
See handbook for temperature class information and
installation drawing 3kxf000094G0009
Canada:
Certificate:
FM19CA0055X
S
-XP: CL I, Div 1, GPS BCD T6...T1
DIP: CL
II,III, Div 1, GPS EFG T6...T3B
CL I, ZN 1, Ex db eb mb IIB+H2 T6...T1 Gb
Ex tb IIIC T80°C...T165°C Db
ANSI/ISA 12.27.01: Dual Seal
FMT4x2
– F1 (i=R1...R8)
Transmitter in remote mount design with dual
-
compartment housing
USA:
Certificate:
FM19US0110X
XP
-IS: CL I, Div 1, GPS BCD T6
DIP: CL II,III, Div 1, GPS EFG T6
CL I, ZN 1, AEx db ia IIB+H2 T6 Gb
ZN 21, AEx ia tb IIIC T80°C Db
See handbook for temperature class information and
installation drawing 3kxf000094G0009
Canada:
Certificate:
FM19CA0055X
XP
-IS: CL I, Div 1, GPS BCD T6
DIP: CL II,III, Div 1, GPS EFG T6
CL I, ZN 1, Ex db ia IIB+H2 T6 Gb
Ex ia tb IIIC T80°C Db
IN
-/OUTPUTS: Urated=30V

10 SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B
… 2 Use in potentially explosive atmospheres
Temperature data
Temperature resistance for the connecting cable
The temperature at the cable entries of the device is dependent on the measuring medium temperature Tmedium and the ambient
temperature Tamb..
For the electrical connection of the device, use only cables with sufficient temperature resistance in accordance with the following
table.
Tamb.
Temperature resistance for the connecting cable
≤
50 °C (≤ 122 °F) ≥70 °C (≥ 158
°F)
≤60 °C (≤ 140 °F)
≥80 °C (≥ 176 °F)
≤
70 °C (≤ 158 °F) ≥90 °C (≥ 194
°F)
From an ambient temperature of Tamb. ≥60 °C (≥ 140 °F), the wires in the connection boxes with the enclosed silicone hoses need to
be additionally insulated.
Note
The signal cable supplied by ABB can be used without restrictions up to an ambient temperature of ≤ 80 °C (≤ 176 °F).
Environmental and process conditions for model FMT4xx…
Ambient temperature Tamb.
−20 to 70 °C (−4 to 158
°F)
Measuring medium temperature Tmedium
−20 to 150 °C (−4 to 302 °F)
IP rating / NEMA rating
IP 65, IP 67 / NEMA 4X,Type
4X

SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B 11
Measuring medium temperature (Ex data) for model FMT4x0-A1… in Zone 1, Zone 21
The table shows the maximum permissible measuring medium temperature as a function of ambient temperature and temperature
class. The permissible measuring medium temperature specified in Environmental and process conditions for model FMT4xx… on
page 10 must not be up-scaled!
Temperature class
Ambient temperature Tamb.
T1
T2
T3
T4
T5
T6
−
40 °C to 50 °C
(−40 °F to 122 °F)
280 °C (536 °F) 185 °C (365 °F) 90 °C (194 °F) 90 °C (194 °F) — —
−
40 °C to 60 °C
(−40
°F to 140 °F) 280 °C (536 °F) 185 °C (365 °F) 90 °C (194 °F) 90 °C (194 °F) — —
−
40 °C to 70 °C
(−40 °F to 158 °F)
280 °C (536 °F) 185 °C (365 °F) 90 °C (194 °F) 90 °C (194 °F) — —
Measuring medium temperature (Ex data) for model FMT4x0-A2… in Zone 2, Zone 22
The table shows the maximum permissible measuring medium temperature as a function of ambient temperature and temperature
class. The permissible measuring medium temperature specified in Environmental and process conditions for model FMT4xx… on
page 10 must not be up-scaled!
Temperature class
Ambient temperature Tamb.
T1
T2
T3
T4
T5
T6
−
40 °C to 40 °C
(−40 °F to 104 °F)
300 °C (572 °F) 290 °C (554 °F) 195 °C (383 °F) 130 °C (266 °F) 95 °C (203 °F) 80 °C (176 °F)
−
40 °C to 50 °C
(−40
°F to 122 °F) 300 °C (572 °F) 290 °C (554 °F) 195 °C (383 °F) 130 °C (266 °F) 95 °C (203 °F) —
−
40 °C to 60 °C
(−40 °F to 140 °F)
300 °C (572 °F) 290 °C (554 °F) 195 °C (383 °F) 130 °C (266 °F) — —
−
40 °C to 70 °C
(−40
°F to 158 °F) 300 °C (572 °F) 290 °C (554 °F) 195 °C (383 °F) 130 °C (266 °F) — —

12 SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B
… 2 Use in potentially explosive atmospheres
… Temperature data
Measuring medium temperature (Ex data) for model FMT4x0-F1… in Class I Division 1 and Class II Division 1
The table shows the maximum permissible measuring medium temperature as a function of ambient temperature and temperature
class. The permissible measuring medium temperature specified in Environmental and process conditions for model FMT4xx… on
page 10 must not be up-scaled!
Temperature class
Ambient temperature Tamb.
T1
T2
T3
T4
T5
T6
−
40 °C to 50 °C
(−40
°F to 122 °F) 280 °C (536 °F) 185 °C (365 °F) 90 °C (194 °F) 90 °C (194 °F) — —
−
40 °C to 60 °C
(−40 °F to 140 °F)
280 °C (536 °F) 185 °C (365 °F) 90 °C (194 °F) 90 °C (194 °F) — —
−
40 °C to 70 °C
(−40
°F to 158 °F) 280 °C (536 °F) 185 °C (365 °F) 90 °C (194 °F) 90 °C (194 °F) — —
Measuring medium temperature (Ex data) for model FMT4x0-F1… in Class I Division 2 and Class II Division 2
The table shows the maximum permissible measuring medium temperature as a function of ambient temperature and temperature
class. The permissible measuring medium temperature specified in Environmental and process conditions for model FMT4xx… on
page 10 must not be up-scaled!
Temperature class
Ambient temperature Tamb.
T1
T2
T3
T4
T5
T6
−
40 °C to 40 °C
(−40 °F to 104 °F)
300 °C (572 °F) 290 °C (554 °F) 195 °C (383 °F) 130 °C (266 °F) 95 °C (203 °F) 80 °C (176 °F)
−
40 °C to 50 °C
(−40
°F to 122 °F) 300 °C (572 °F) 290 °C (554 °F) 195 °C (383 °F) 130 °C (266 °F) 95 °C (203 °F) —
−
40 °C to 60 °C
(−40 °F to 140 °F)
300 °C (572 °F) 290 °C (554 °F) 195 °C (383 °F) 130 °C (266 °F) — —
−
40 °C to 70 °C
(−40
°F to 158 °F) 300 °C (572 °F) 290 °C (554 °F) 195 °C (383 °F) 130 °C (266 °F) — —
Notice on dust-ignition protection for USA and Canada in accordance with NEC
The surface temperature of the device must not under any circumstances up-scale 85 °C (185 °F) if there is there carbonaceous dust
or dust which can carbonate.
Attention, T-Class for Dust US and Canada information according NEC/CEC:
The maximum temperature cannot exceed 165 °C under any circumstances where a carbonaceous dust or dust likely to carbonize is
present.
• For combustible dusts, less than the lower of either the layer or cloud ignition temperature of the specific combustible dust. For
organic dusts that may dehydrate or carbonize, the temperature marking shall not exceed the lower of either the ignition
temperature or 165 °C (329 °F).
• For ignitible fibers/flyings, less than 165 °C (329 °F) for equipment that is not subject to overloading, or 120°C (248°F) for
equipment (such as motors or power transformers) that may be overloaded.

SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B 13
Electrical data
Overview
Integral mount design Remote mount design
A
Power supply
B
Inputs / outputs, communication
C
Signal cable (remote mount design only)
Figure 1: Electrical connections overview
Zones 2, 22
Division 2 and Zone 2
ATEX / IECEx:
II 3 G & II 3 D
USA:
DIV2 & ZN2
Canada:
DIV2 & ZN2
Activating the inputs and outputs
A
Power supply
B
Inputs / outputs, communication
C
Signal cable (remote mount design only)
•
Type of protection ATEX / IECEx:
Non-sparking ‘Ex ec’
•
Type of protection USA / Canada:
‘non IS’
•
Maximum 250 Vrms
•
Terminals: 1+, 2-, L, N,
•
Type of protection ATEX / IECEx:
non-sparking ‘Ex ec’
•
Type of protection USA / Canada:
Non-Incendive ‘NI’
•
Terminals: 31, 32, Uco, V1, V2, V3, V4, 41, 42, 51, 52
•
Type of protection ATEX / IECEx:
Non-sparking ‘Ex ec’
•
Type of protection USA / Canada:
Non-Incendive ‘NI’
•
Terminals: A, B, UFE, GRN
Zones 1, 21
Division 1 and Zone 1
ATEX / IECEx:
II 2 G & II 2 D
II 1/2 G & II 1 G & II 2 D
USA:
DIV1 & ZN1
Canada:
DIV1 & ZN1
Activating the inputs and outputs
A
Power supply
B
Inputs / outputs, communication
C
Signal cable (remote mount design only)
•
Type of protection ATEX / IECEx:
Non-sparking ‘Ex eb’
•
Type of protection USA / Canada:
‘non IS’
•
Maximum 250 Vrms
•
Terminals: 1+, 2-, L, N,
•
Type of protection ATEX / IECEx:
non-sparking ‘Ex ec’
•
Type of protection USA / Canada:
Non-Incendive ‘NI’
•
When installing in ‘Ex ia’, suited intrinsically safe
isolation amplifiers must be used for the
connection.
• Terminals: 31, 32, Uco, V1, V2, V3, V4, 41, 42, 51, 52
•
Type of protection ATEX / IECEx:
Non-sparking ‘Ex eb’
•
Type of protection USA / Canada:
explosionproof ‘XP’
•
Terminals: A, B, UFE, GRN
Note
When installing in ‘Ex ia’ or ‘IS’ type of protection, the type of protection is determined by the type of electrical connection. The
information in Changing the type of protection on page 21 must be observed when changing the type of protection!

14 SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B
… 2 Use in potentially explosive atmospheres
… Electrical data
Zone 0, 1, 21 and Division 1 – Model: FMT4xx-A1, FMT4xx-F1
Type of protection
‘e’ / ‘XP’
‘ia’ / ‘IS’
Outputs on basic device
U
M
[V]
I
M
[A]
U
O
[V]
U
I
[V]
I
O
[mA]
I
I
[mA]
P
O
[mW]
P
I
[mW]
C
O
[nF]
C
I
[nF]
C
OPA
[nF]
C
IPA
[nF]
L
O
[mH]
L
I
[mH]
Current
/ HART output 31 / UCO, active
Terminals 31 / UCO
30
0.2
30
30
115
115
815
815
10
10
5
5
0.08
0.08
Current
/ HART output 31 / 32, passive
Terminals 31
/ 32
30
0.2
—
30
—
115
—
815
—
27
—
5
0.08
0.08
Digital output 41
/ 42, active*
Terminals 41 / 42 and V1 / V2*
30
0.1
27.8
30
119
30
826
225
20
20
29
29
0.22
0.22
Digital output 41
/ 42, active**
Terminals 41
/ 42 and U
CO
/ 32**
30
0.1
30
30
115
115
826
225
16
16
10
10
0.08
0.08
Digital output 41
/ 42, passive
Terminals 41 / 42
30
0.1
—
30
—
30
—
225
—
27
—
5
—
0.08
Digital output 51
/ 52, active*
Terminals 51
/ 52 and V1 / V2*
30
0.1
27.8
30
119
30
826
225
20
20
29
29
0.22
0.22
Digital output 51
/ 52, passive
Terminals 51 / 52
30
0.1
—
30
—
30
—
225
—
27
—
5
—
0.08
All outputs are electrically isolated from each other and from the power supply.
Digital outputs 41 / 42 and 51 / 52 are not electrically isolated from each
other. Terminals 42 / 52 have the same potential.
* Only in conjunction with additional ‘24 V DC loop power supply (blue)’ plug-in card in slot OC1.
** Only in conjunction with current output UCO / 32 in ‘power mode’, see Current output Uco / 32 as loop power supply for digital output 41 / 42 or 51 / 52 on
page 58.
Type of protection
‘e’ / ‘XP’
‘ia’ / ‘IS’
Inputs and outputs with optional plug
-in cards U
M
[V]
I
M
[A]
U
O
[V]
U
I
[V]
I
O
[mA]
I
I
[mA]
P
O
[mW]
P
I
[mW]
C
O
[nF]
C
I
[nF]
C
OPA
[nF]
C
IPA
[nF]
L
O
[mH]
L
I
[mH]
Current output V3 / V4, active*
Terminals V3
/ V4 and V1 / V2*
30
0.1
27.8
30
119
30
826
225
29
29
117
117
0.4
0.4
Current output V1 / V2, passive**
Current output V3 / V4, passive**
Terminals V1 / V2** or V3 / V4**
30
0.1
—
30
—
68
—
510
—
45
—
59
—
0.27
Digital output V3 / V4, active*
Terminals V3 / V4 and V1 / V2*
30
0.1
27.8
30
119
68
826
225
17
17
31
31
0.4
0.4
Digital output V1 / V2, passive**
Digital output V3 / V4, passive**
Terminals V1 / V2** or V3 / V4**
30
0.1
—
30
—
30
—
225
—
13
—
16
—
0.27
Digital input V3 / V4, active*
Terminals V3
/ V4 and V1 / V2
30
0.1
27.8
30
119
3.45
826
25.8
17
17
31
31
0.4
0.4
Digital input V1 / V2, passive*
Digital input V3 / V4, passive*
Terminals V1 / V2** or V3 / V4**
30
0.1
—
30
—
3.45
—
25.8
—
13
—
16
—
0.27
Modbus® / PROFIBUS
DP®
Terminals V1
/ V2
30
0.1
4.2
4.2
150
150
150
150
5300
5300
0.06
0.06
0.09
0.09
* Only in conjunction with additional ‘24 V DC loop power supply (blue)’ plug-in card in slot OC1.
** The terminal assignment depends on the model number or the slot assignments. For connection examples, see Connection examples on page 62.

SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B 15
Zone 2, 22 and Division 2 – Model: FMT4xx-A2, FMT4xx-F2
Outputs on basic device
Operating values (general)
Type of protection ‘ec’ / ‘NI’
UN
IN
UN
IN
Current
/ HART output 31 / UCO, active
Terminals 31 / UCO
30
V
30
mA
30
V
30
mA
Current
/ HART output 31 / 32, passive
Terminals 31
/ 32
30
V
30
mA
30
V
30
mA
Digital output 41
/ 42, active*
Terminals 41 / 42 and V1 / V2*
30
V
30
mA
30
V
30
mA
Digital output 41
/ 42, active**
Terminals 41
/ 42 and U
CO
/ 32**
30
V
30
mA
30
V
30
mA
Digital output 41
/ 42, passive
Terminals 41 / 42
30
V
30
mA
30
V
30
mA
Digital output 51
/ 52, active*
Terminals 51
/ 52 and V1 / V2*
30
V
30
mA
30
V
30
mA
Digital output 51
/ 52, passive
Terminals 51 / 52
30
V
30
mA
30
V
30
mA
All outputs are electrically isolated from each other and from the power supply.
Digital outputs 41 / 42 and 51 / 52 are not electrically isolated from each other. Terminals 42 / 52 have the same potential.
* Only in conjunction with additional ‘24 V DC loop power supply (blue)’ plug-in card in slot OC1.
** Only in conjunction with current output UCO / 32 in ‘Powermode’, see Current output Uco / 32 as loop power supply for digital output 41 / 42 or 51 / 52 on
page 58.
Inputs and outputs with optional plug
-in cards
Operating values (general)
Type of protection ‘ec’ / ‘NI’
UN
IN
UN
IN
Current output V3 / V4, active*
Terminals V3 / V4 and V1 / V2*
30
V
30
mA
30
V
30
mA
Current output V1 / V2, passive**
Current output V3 / V4, passive**
Terminals V1
/ V2** or V3 / V4**
30
V
30
mA
30
V
30
mA
Digital output V3 / V4, active*
Terminals V3 / V4 and V1 / V2*
30
V
30
mA
30
V
30
mA
Digital output V1 / V2, passive**
Digital output V3 / V4, passive**
Terminals V1 / V2** or V3 / V4**
30
V
30
mA
30
V
30
mA
Digital input V3 / V4,
active*
Terminals V3 / V4 and V1 / V2
30
V
3,45
mA
30
V
3,45
mA
Digital input V1 / V2, passive*
Digital input V3 / V4, passive*
Terminals V1
/ V2** or V3 / V4**
30
V
3,45
mA
30
V
3,45
mA
Modbus® / PROFIBUS
DP®
Terminals V1 / V2
30
V
30
mA
30
V
30
mA
* Only in conjunction with additional ‘24 V DC loop power supply (blue)’ plug-in card in slot OC1.
** The terminal assignment depends on the model number or the slot assignments. For connection examples, see Connection examples on page 62.

16 SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B
… 2 Use in potentially explosive atmospheres
… Electrical data
Special connection conditions
Note
The AS plug-in card (24 V DC loop power supply) may only be
used to power the internal inputs and outputs on the device.
It must not be used to power external circuits!
Note
If the protective earth (PE) is connected in the flowmeter's
terminal box, you must ensure that no dangerous potential
difference can arise between the protective earth (PE) and the
potential equalization (PA) in areas with explosion risk.
Note
• For devices with a power supply of 11 to 30 V DC, on-site
external overvoltage protection must be provided.
• You must make sure that the overvoltage is limited to
140 % (= 42 V DC) of the maximum operating voltage.
The output circuits are designed so that they can be connected
to both intrinsically-safe and non-intrinsically-safe circuits.
• Combining intrinsically safe and non-intrinsically safe circuits
is not permitted.
• On intrinsically safe circuits, potential equalization should be
established along the entire length of the cable used for the
signal outputs.
• The rated voltage of the non-intrinsically safe circuits is
UM= 30 V.
• Intrinsic safety is preserved If the rated voltage UM= 30 V is
not up-scaled when connections are established to non-
intrinsically safe external circuits.
• The information in Changing the type of protection on
page 21 must be observed when changing the type of
protection.
Devices connected to the relevant equipment must not be
operated at over 250 Vrms AC or 250 V DC to ground.
Installation in accordance with ATEX or IECEx must comply with
the applicable national and international standards and
directives.
Installation in the USA or Canada must comply with ANSI / ISA
RP 12.6, ‘Installation of intrinsically safe systems for hazardous
(classified) locations’, the ‘National Electrical Code (ANSI / NFPA
70), sections 504, 505’ and the ‘Canadian electrical code (C22.1-
02)’.
Apparatus connected to the flowmeter must have appropriate
explosion protection approval in accordance with the Entity
concept.
The apparatus must have intrinsically safe circuits.
The apparatus must be installed and connected in accordance
with the relevant manufacturer documentation.
The electrical specifications in Electrical data on page 13 must
be observed.

SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B 17
Installation instructions
ATEX / IECEx
The installation, commissioning, maintenance and repair of
devices in potentially explosive atmospheres must only be
carried out by appropriately trained personnel. Works may be
carried out only by persons, whose training has included
instructions on different types of protection and installation
techniques, concerned rules and regulations as well as general
principles of zoning. The person must possess the appropriate
competences for the type of work to be conducted.
When operating with combustible dusts, comply with
EN 60079-31.
The safety instructions for electrical apparatus in potentially
explosive areas must be in accordance with Directive
2014/34/EU (ATEX) and IEC 60079-14 (Installation of electrical
equipment in potentially explosive areas).
Comply with the applicable regulations for the protection of
employees to ensure safe operation.
cFMus
The installation, commissioning, maintenance and repair of
devices in areas with explosion hazard must only be carried out
by appropriately trained personnel.
The operator must strictly observe the applicable national
regulations with regard to installation, function tests, repairs,
and maintenance of electrical devices. (e. g. NEC, CEC).
Use in areas exposed to combustible dust
When using the device in areas exposed to combustible dusts
(dust ignition), the following points must be observed:
• The maximum surface temperature of the device may not
up-scale 85 °C (185 °F).
• The process temperature of the attached piping may up-
scale 85 °C (185 °F).
• Approved dust-proof cable glands must be used when
operating in Zone 21, 22 or in Class II, Class III.
Opening and closing the housing
DANGER
Danger of explosion if the device is operated with the
transmitter housing or terminal box open!
Before opening the transmitter housing or the terminal box,
note the following points:
• A valid fire permit must be present.
• Make sure that there is no explosion hazard.
• Switch off the power supply and wait for t > 20 minutes
before opening.
WARNING
Risk of injury due to live parts!
When the housing is open, contact protection is not provided
and EMC protection is limited.
• Before opening the housing, switch off the power supply.
See also Opening and closing the housing on page 47.
Only original spare parts must be used to seal the housing.
Note
Spare parts can be ordered from ABB Service.
www.abb.com/contacts

18 SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B
Cable entries in accordance with ATEX / IECEx
The devices are supplied with cable glands installed (certified in
accordance with ATEX or IECEx).
• The use of standard cable glands and closures is prohibited.
• The black plugs in the cable glands are intended to provide
protection during transport.
• The outside diameter of the connection cable must measure
between 6 mm (0.24 in) and 12 mm (0.47 in) to guarantee the
required tightness.
• Black cable glands are installed by default when the device is
supplied. If signal outputs are connected to intrinsically safe
circuits, replace the black cap on the corresponding cable
gland with the blue one supplied.
• Any unused cable entries must be sealed before
commissioning in accordance with the applicable standards.
Note
Low-temperature version devices (optional, up to −40 °C (−40 °F)
ambient temperature) are supplied with metal cable glands due
to the required temperature resistance.
Cable entries in accordance with cFMus
1
Transport protection plugs
Figure 2: Cable entry
The devices are delivered with ½ in NPT threads with transport
protection plugs.
• Unused cable entries must be sealed off prior to
commissioning using either approved pipe fittings or cable
glands in accordance with national regulations (NEC, CEC).
• Make sure that the pipe fittings, cable glands and, if
applicable, sealing plugs are installed properly and are leak-
tight.
• If the device is to be operated in areas with combustible
dusts, a threaded pipe connection or cable gland with
suitable approval must be used.
• The use of standard cable glands and closures is prohibited.
Note
Devices which are certified for use in North America are supplied
with a ½ in. NPT thread only and without cable glands.

SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B 19
Electrical connections
Note
The temperature at the cable entries of the device depends on
the design, the measuring medium temperature Tmedium and the
ambient temperature Tamb..
For the electric connection of the device, use only cables with
sufficient temperature resistance in accordance with the tables
at Temperature resistance for the connecting cable on page 10.
Grounding
The sensor must be grounded in accordance with the applicable
international standards.
Perform grounding of the device in accordance with Pin
assignment on page 56.
In accordance with NEC standards, an internal ground
connection is present in the device between the sensor and the
transmitter.
Perform grounding of the device in accordance with Pin
assignment on page 56.
Process sealing
In accordance with ‘North American Requirements for Process
Sealing between Electrical Systems and Flammable or
Combustible Process Fluids’.
Note
The device is suitable for use in Canada.
• For use in Class II, Groups E, F and G, a maximum surface
temperature of 165 °C (329 °F) may not be up-scaled.
• All cable (conduits) should be sealed from the device within a
distance of 18 in (457 mm).
ABB flowmeters are designed for the worldwide industrial
market and are suitable for functions such as the measurement
of flammable and combustible liquids and can be installed in
process pipes.
Connecting devices with cable (conduits) to the electric
installation makes it possible for measuring media to reach the
electric system.
To prevent measuring media from seeping into the electric
installation, the devices are equipped with process gaskets
which meet requirements in accordance with ANSI / ISA 12.27.01.
SensyMaster flowmeters are designed as ‘Dual Seal Devices’.
In accordance with the requirements of standard
ANSI / ISA 12.27.01, the existing operating limits of temperature,
pressure and pressure bearing parts must be reduced to the
following limit values:
Limit values
Flange or pipe material
No limitations
Nominal sizes
DN 25 to DN
2000
(1 to 78 in)
Operating temperature
−20 °C to 280
°C
(−4 °F to 536
°F)
Process pressure
PN 40 / Class 300

20 SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B
… 2 Use in potentially explosive atmospheres
Operating instructions
Protection against electrostatic discharges
DANGER
Risk of explosion!
The painted surface of the device can store electrostatic
charges.
As a result, the housing can form an ignition source due to
electrostatic discharges in the following conditions:
• The device is operated in environments with a relative
humidity of ≤ 30 %.
• The painted surface of the device is thereby relatively free
from impurities such as dirt, dust or oil.
• Instructions on avoiding ignition in potentially explosive
environments due to electrostatic discharges in
accordance with PD CLC/TR 60079-32-1 and IEC TS 60079-
32-1 must be complied with!
Instructions on cleaning
The painted surface of the device must be cleaned only using a
moist cloth.
Devices which are approved for use in potentially explosive
atmospheres have an additional warning plate.
1
Warning – Do not open in a flammable or potentially explosive
atmosphere.
1
WARNING! – Danger due to electrostatic discharge.
Figure 3: Warning signs on the device
Devices with dual-compartment housing with type of
protection Ex ‘d’ flameproof (enclosure)
Figure 4: Mounting screws on the dual-compartment transmitter housing
NOTICE
Special conditions for safe use!
For devices with dual-compartment housing with type of
protection Ex ‘d’, the following instructions must be observed:
• The mounting screws 1used to connect the dual-
compartment housing to the sensor shall be M5 × 20 A2
gemäß according DIN 7964.
• The mounting screws shall have a yield stress of at least
210 Nm
2
.
Repair
Devices of type of protection ‘d’ are equipped with flameproof
joints in the housing. Contact ABB before commencing repair
work.