Endress+Hauser Liquiphant FTL51B Firmware update

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Safety Instructions
Liquiphant FTL51B, FTL63
ATEX, IECEx: Ex ia IIC T6 Ga/Gb
Ex ia IIC T6 Gb
Ex ia IIIC Txxx°C Da/Db
Ex ia IIIC Txxx°C Db
0
XA01810F-C/00/EN/04.22-00
71569643
2023-04-04

Liquiphant FTL51B, FTL63 XA01810F-C
Endress+Hauser 3
Liquiphant FTL51B, FTL63
Table of contents
Associated documentation ......................................... 4
Supplementary documentation ..................................... 4
General notes: Combined approval ................................. 4
Certificates and declarations ....................................... 4
Certificate holder .................................................. 5
Other standards ................................................... 5
Extended order code ............................................... 5
Safety instructions: General ....................................... 10
Safety instructions: Special conditions ............................. 10
Safety instructions: Installation ................................... 12
Safety instructions: Zone 0 ........................................ 14
Safety instructions: Zone separation Zone 0, Zone 1 ................ 14
Temperature tables .............................................. 15
Connection data ................................................. 22

XA01810F-C Liquiphant FTL51B, FTL63
4 Endress+Hauser
Associated
documentation
All documentation is available on the Internet:
www.endress.com/Deviceviewer
(enter the serial number from the nameplate).
If not yet available, a translation into EU languages can be
ordered.
To commission the device, please observe the Operating Instructions
pertaining to the device:
BA01894F
Supplementary
documentation
Explosion protection brochure: CP00021Z
The explosion protection brochure is available on the Internet:
www.endress.com/Downloads
General notes:
Combined approval
Ex ia IIC Ex ia IIIC Ex ia IIC Ex ia IIIC Ex ia IIIC Ex ia IIC
Zone 0
or
Zone 1
Zone 1 Zone 20
or
Zone 21
Zone 21 Zone 0
or
Zone 1
Zone 21 Zone 20
or
Zone 21
Zone 1
The device is designed for operation in explosive gas or explosive dust
atmosphere as shown in the sketch above. In the event of potentially
explosive gas-air and dust-air mixtures occurring simultaneously:
Suitability requires further assessment.
A sequential change between gas and dust explosion protection is
only possible if:
• A period with non-explosive atmosphere is realized during the
transition or
• Special examinations are done which are not covered by the
certificate
Certificates and
declarations
EU Declaration of Conformity
Declaration Number:
EC00721
The EU Declaration of Conformity is available on the Internet:
www.endress.com/Downloads

Liquiphant FTL51B, FTL63 XA01810F-C
Endress+Hauser 5
EU type-examination certificate
Certificate number:
KIWA 19ATEX0017X
List of applied standards: See EU Declaration of Conformity.
IEC Declaration of Conformity
Certificate number:
IECEx KIWA 19.0010X
Affixing the certificate number certifies conformity with the following
standards (depending on the device version):
• IEC 60079-0 : 2017
• IEC 60079-11 : 2011
• IEC 60079-26 : 2021
Certificate holder Endress+Hauser SE+Co. KG
Hauptstraße 1
79689 Maulburg, Germany
Address of the manufacturing plant: See nameplate.
Other standards Among other things, the following standards shall be observed in their
current version for proper installation:
• IEC/EN 60079-14: "Explosive atmospheres - Part 14: Electrical
installations design, selection and erection"
• EN 1127-1: "Explosive atmospheres - Explosion prevention and
protection - Part 1: Basic concepts and methodology"
Extended
order code
The extended order code is indicated on the nameplate, which is affixed
to the device in such a way that it is clearly visible. Additional
information about the nameplate is provided in the associated
Operating Instructions.

XA01810F-C Liquiphant FTL51B, FTL63
6 Endress+Hauser
Structure of the extended order code
FTL51B,
FTL63 – ************* + A*B*C*D*E*F*G*..
(Device
type)
(Basic
specifications)
(Optional
specifications)
* = Placeholder
At this position, an option (number or letter) selected from the
specification is displayed instead of the placeholders.
Basic specifications
The features that are absolutely essential for the device (mandatory
features) are specified in the basic specifications. The number of
positions depends on the number of features available.
The selected option of a feature can consist of several positions.
Optional specifications
The optional specifications describe additional features for the device
(optional features). The number of positions depends on the number of
features available. The features have a 2-digit structure to aid
identification (e.g. JA). The first digit (ID) stands for the feature group
and consists of a number or a letter (e.g. J = Test, Certificate). The
second digit constitutes the value that stands for the feature within the
group (e.g. A = 3.1 material (wetted parts), inspection certificate).
More detailed information about the device is provided in the following
tables. These tables describe the individual positions and IDs in the
extended order code which are relevant to hazardous locations.
Extended order code: Liquiphant
The following specifications reproduce an extract from the product
structure and are used to assign:
• This documentation to the device (using the extended order
code on the nameplate).
• The device options cited in the document.
Device type
FTL51B, FTL63

Liquiphant FTL51B, FTL63 XA01810F-C
Endress+Hauser 7
Basic specifications
Position 1, 2 (Approval)
Selected option Description
FTL51B
FTL63
BK 1) ATEX II 1/2 G Ex ia IIC T6...T1 Ga/Gb
ATEX II 2 G Ex ia IIC T6...T1 Gb
ATEX II 1/2 D Ex ia IIIC Txxx°C Da/Db
ATEX II 2 D Ex ia IIIC Txxx°C Db
IECEx Ex ia IIC T6...T1 Ga/Gb
IECEx Ex ia IIC T6...T1 Gb
IECEx Ex ia IIIC Txxx°C Da/Db
IECEx Ex ia IIIC Txxx°C Db
1) In connection with Position 3, 4 = A8 and Optional specification, ID Nx, Ox = NG:
The temperature classes change to T4...T1
Position 3, 4 (Output)
Selected option Description
FTL51B
FTL63
A7 FEL67, 2-wire PFM + test button
A8 FEL68, 2-wire NAMUR + test button
GA FEL60D, density/concentration
Position 6 (Housing, Material)
Selected option Description
FTL51B
FTL63
B Single compartment; Alu, coated
C Single compartment; 316L, cast
M Dual compartment L-shape; Alu, coated
Shown in the temperature tables
exemplary as follows:

XA01810F-C Liquiphant FTL51B, FTL63
8 Endress+Hauser
Position 7 (Electrical Connection)
Selected option Description
FTL51B
FTL63
B 1) Gland M20, brass nickel plated, IP66/68 NEMA Type 4X/6P
C 2) Gland M20, 316L, IP66/68 NEMA Type 4X/6P
F Thread M20, IP66/68 NEMA Type 4X/6P
G Thread G1/2, IP66/68 NEMA Type 4X/6P
I Thread NPT3/4, IP66/68 NEMA Type 4X/6P
Y Special version: Thread NPT1/2, IP66/68 NEMA Type 4X/6P
1) Only in connection with Position 6 = B, M
2) Only in connection with Position 6 = B, C
Position 8 (Application)
Selected option Description
FTL51B
FTL63
A 1) Process max 150°C/302°F, max 64bar
B 1) Process max 150°C/302°F, max 100bar
C 2) Process max 80°C/176°F, max 25bar
1) Only in connection with Position 3, 4 = A7, A8
2) Only in connection with Position 3, 4 = GA
Position 9 (Surface Refinement)
Selected option Description
FTL51B
FTL63
A Standard Ra <3,2µm/126µin
FTL63 B Standard Ra <0,76µm/30µin
D Standard Ra <0,03µm/12µin
E Standard Ra <0,03µm/12µin electr. polished

Liquiphant FTL51B, FTL63 XA01810F-C
Endress+Hauser 9
Position 10 (Type of Probe)
Selected option Description
FTL51B
FTL63
1 Compact version
2 Extension tube
3 Short tube version
Shown in the temperature tables
exemplary as follows:
Optional specifications
ID Jx, Kx (Test, Certificate, Declaration)
Selected option Description
FTL51B
FTL63
JL 1) Ambient temperature -50°C/-58°F
JN 1) Ambient temperature -52°C/-62°F
1) Only in connection with Position 3, 4 = A7, A8
ID Mx (Sensor Design)
Selected option Description
FTL51B
FTL63
MR Temperature separator
MS Pressure tight feed through (Second line of defence)
ID Nx, Ox (Accessory Mounted)
Selected option Description
FTL51B
FTL63
NF 1) Bluetooth VU121, Labeling: VA13-02
NG 2) Prepared for Heartbeat Verification + Monitoring +
Bluetooth VU121, Labeling: VA13-01
1) Only in connection with Position 3, 4 = A7, Position 6 = B, M
2) Only in connection with Position 3, 4 = A8, Position 6 = B, M

XA01810F-C Liquiphant FTL51B, FTL63
10 Endress+Hauser
ID Px, Rx (Accessory Enclosed)
Selected option Description
FTL51B
FTL63
PA 1) Weather protection cover, 316L
PB 2) Weather protection cover, plastic
R6 3) Test magnet
1) Only in connection with Position 6 = M
2) Only in connection with Position 6 = B, C
3) Only in connection with Position 3, 4 = A8
Safety
instructions:
General
• The device is intended to be used in explosive atmospheres as defined
in the scope of IEC 60079-0 or equivalent national standards. If no
potentially explosive atmospheres are present or if additional
protective measures have been taken: The device may be operated
according to the manufacturer's specifications.
• Devices suitable for zone separation (marked Ga/Gb or Da/Db) are
always suitable for installation in the less critical zone (Gb or Db).
Due to space limitations the corresponding marking maybe not
indicated on the nameplate.
• Staff must meet the following conditions for mounting, electrical
installation, commissioning and maintenance of the device:
• Be suitably qualified for their role and the tasks they perform
• Be trained in explosion protection
• Be familiar with national regulations
• Install the device according to the manufacturer's instructions and
national regulations.
• Do not operate the device outside the specified electrical, thermal and
mechanical parameters.
• Only use the device in media to which the wetted materials have
sufficient durability.
• Avoid electrostatic charging:
• Of plastic surfaces (e.g. enclosure, sensor element, special
varnishing, attached additional plates, ..)
• Of isolated capacities (e.g. isolated metallic plates)
• Refer to the temperature tables for the relationship between the
permitted ambient temperature for the sensor and/or transmitter,
depending on the range of application and the temperature class.
• Alterations to the device can affect the explosion protection and must
be carried out by staff authorized to perform such work by
Endress+Hauser.
Safety
instructions:
Special conditions
Permitted ambient temperature range at the electronics enclosure:
–40 °C ≤ Ta ≤ +70 °C

Liquiphant FTL51B, FTL63 XA01810F-C
Endress+Hauser 11
• Limitations of the maximum ambient temperature at the electronics
enclosure may be required dependent on device configuration,
process temperatures and temperature classification.
• Details of limitations: →  15, "Temperature tables".
• To avoid electrostatic charging: Do not rub surfaces with a dry cloth.
• In the event of additional or alternative special varnishing on the
enclosure or other metal parts or for adhesive plates:
• Observe the danger of electrostatic charging and discharge.
• Do not install in the vicinity of processes (≤ 0.5 m) generating
strong electrostatic charges.
Basic specification, Position 6 = B, M
Avoid sparks caused by impact and friction.
Optional specification, ID Px, Rx = PA
Connect the weather protection cover to the local potential
equalization.
Optional specification, ID Px, Rx = PB
Avoid electrostatic charging of the weather protection cover (e.g.
friction, cleaning, maintenance, strong medium flow).
Optional specification, ID Px, Rx = R6
Suitable for use in explosion hazardous areas.

XA01810F-C Liquiphant FTL51B, FTL63
12 Endress+Hauser
Safety
instructions:
Installation
2
3
A
1
4
5
5
6
A0025536
 1
A Zone 1, Zone 21
1 Tank; Zone 0, Zone 1, Zone 20, Zone 21
2 Electronic insert
3 Enclosure
4 Basic specification, Position 3, 4 = A7, A8:
Associated intrinsically safe power supply units
Basic specification, Position 3, 4 = GA:
Only associated intrinsically safe power supply unit FML621 from
Endress+Hauser
5 Potential equalization line
6 Local potential equalization
• Connect the device using suitable cable and wire entries of protection
type "Intrinsic safety (Ex i)". An ingress protection of at least IP54
must be achieved.
• When the device is connected to certified intrinsically safe circuits of
Category Ex ib for Equipment Groups IIC and IIB, the type of
protection changes to Ex ib IIC and Ex ib IIB.
• Continuous service temperature of the connecting cable: ≥ Ta+20 K.
• Perform the following to achieve the degree of protection IP66/67:
• Screw the cover tight.
• Mount the cable entry correctly.
• Seal unused entry glands with approved sealing plugs that correspond
to the type of protection.
• Observe the pertinent guidelines when interconnecting intrinsically
safe circuits.

Liquiphant FTL51B, FTL63 XA01810F-C
Endress+Hauser 13
• Observe the maximum process conditions according to the
manufacturer's Operating Instructions.
• At high medium temperatures, note flange pressure load capacity as
a factor of temperature.
• Install the device to exclude any mechanical damage or friction
during the application. Pay particular attention to flow conditions and
tank fittings.
• Support extension tube of the device if a dynamic load is expected.
• The device can be equipped with the Bluetooth® module: refer to the
Operating Instructions and specifications in the "Bluetooth® module"
chapter.
Device group III, Application in dust
• To ensure the ingress protection IP66/67: Only use the unit-mounted
cable entries, sealing plugs and O-rings.
• Supplied cable glands and metallic sealing plugs comply with the
requirements of type of protection marked on the nameplate.
• In case of very strongly abrasive or corrosive media: Additionally
protect the wetted surface of the sensor in order to avoid abrasion of
the zone separation wall.
Permitted ambient conditions
Ex ia IIIC Txxx°C Da/Db
Process
Zone 20
Enclosure
Zone 21
Continuous dust submersion Dust accumulation or temporary
explosive dust atmosphere
Continuous explosive dust
atmosphere and deposits
Dust accumulation or temporary
explosive dust atmosphere
Ex ia IIIC Txxx°C Db
Process
Zone 21
Enclosure
Zone 21
Continuous dust deposits
or temporary explosive dust
atmosphere
Dust accumulation or temporary
explosive dust atmosphere

XA01810F-C Liquiphant FTL51B, FTL63
14 Endress+Hauser
Accessory high pressure sliding sleeve
The high pressure sliding sleeve can be used for a continuous setting of
the switch point and is suited for zone separation if mounted properly
(see Operating Instructions).
Intrinsic safety
• The device is only suitable for connection to certified, intrinsically
safe equipment with explosion protection Ex ia / Ex ib.
• The intrinsically safe input power circuit of the device is isolated from
ground. The dielectric strength is at least 500 Vrms.
Potential equalization
Integrate the device into the local potential equalization.
Optional specification, ID Px, Rx = PA
Connect the weather protection cover to the local potential
equalization.
Bluetooth® module
Basic specification, Position 3, 4 = A7
If the device is equipped with the Bluetooth® module, no battery is
required or allowed.
Basic specification, Position 3, 4 = A8
• If the device is equipped with the Bluetooth® module, a battery is
required.
• Removal or replacement of the battery is only permitted in non-
hazardous areas.
• Observe the information in the Safety Instructions (XA) included with
the Bluetooth® module.
Safety
instructions:
Zone 0
When using under non-atmospheric pressures and non-atmospheric
temperatures: The sensor part of the device approved for Zone 0 does
not cause any ignition hazards.
Safety
instructions:
Zone separation
Zone 0, Zone 1
Device type FTL51B, FTL63 with Basic specification, Position 9 = A
The zone separation wall of the device is made of stainless steel or high
corrosion-resistant alloy of thickness ≥ 1 mm.
Device type FTL63 with Basic specification, Position 9 = B, D, E
• The zone partition wall of the device is made of stainless steel or a
highly corrosion-resistant alloy of thickness from 0.2 to 1 mm.
• The probe must not be subjected to abrasive or corrosive medium that
may adversely affect the partition for the zone separation.

Liquiphant FTL51B, FTL63 XA01810F-C
Endress+Hauser 15
Temperature
tables
Optional specification, ID Jx, Kx = JL
Lower limit of the ambient temperature for explosion protection
changes to –50 °C.
Optional specification, ID Jx, Kx = JN
Lower limit of the ambient temperature for explosion protection
changes to –52 °C.
General notes
Ex ia IIC
Optional specification, ID Px, Rx = PB
When using the weather protection cover: Reduce the values Ta of
P1, P2, P3 by 16 K.
Ex ia IIIC
Optional specification, ID Px, Rx = PB
When using the weather protection cover: Reduce the values Ta by
16 K.
Description notes
Unless otherwise indicated, the positions always refer to the basic
specification.
Zone 0, Zone 1
1st column: Position 8 = A, B, ...
2nd column: Temperature classes T6 (85 °C) to T1 (450 °C)
Column P1 to P5: Position (temperature value) on the axes of the
derating
• Ta: Ambient temperature in °C
• Tp: Process temperature in °C
Ta
Tp
P1 P2
P5
P3
P4
A0033052

XA01810F-C Liquiphant FTL51B, FTL63
16 Endress+Hauser
Zone 20, Zone 21 or Zone 21
1st column: Position 8 = A, B, ...
2nd column: Process temperature range in °C
3rd column: Ambient temperature range in °C
4th column: Maximum surface temperature in °C
80
60
150
Ta
Tp
A0039764
TaAmbient temperature in °C
TpProcess temperature in °C
Zone 0, Zone 1
Zone 1
Zone 0,
Zone 1

Liquiphant FTL51B, FTL63 XA01810F-C
Endress+Hauser 17
Position 3, 4 = A7
Without Optional specification, ID Mx = MR, MS
A, B P1 P2 P3 P4 P5
TpTaTpTaTpTaTpTaTpTa
T6 1) –50 70
65 2)
71 70
65 2)
80 65 80 –40
–50 3)
–52 4)
–50 –40
–50 3)
–52 4)
T5 1) –50 70
65 2)
94 70
65 2)
95 69 95 –50
T4 –50 70
65 2)
94 70
65 2)
130 54 130 –50
T3...T1 –50 70
65 2)
94 70
65 2)
150 45 150 –50
1) In connection with Position 3, 4 = A8 and Optional specification, ID Nx, Ox = NG: The temperature classes change
to T4...T1
2) Only in connection with Position 3, 4 = A8 and Optional specification, ID Nx, Ox = NG
3) Only in connection with Optional specification, ID Jx, Kx = JL
4) Only in connection with Optional specification, ID Jx, Kx = JN
With Optional specification, ID Mx = MR, MS
A, B P1 P2 P3 P4 P5
TpTaTpTaTpTaTpTaTpTa
T6 1) –50 70
65 2)
75 70
65 2)
80 69 80 –40
–50 3)
–52 4)
–50 –40
–50 3)
–52 4)
T5 1) –50 70
65 2)
95 70
65 2)
95 70 95 –50
T4 –50 70
65 2)
130 70
65 2)
130 70 130 –50
T3...T1 –50 70
65 2)
150 70
65 2)
150 70 150 –50
1) In connection with Position 3, 4 = A8 and Optional specification, ID Nx, Ox = NG: The temperature classes change
to T4...T1
2) Only in connection with Position 3, 4 = A8 and Optional specification, ID Nx, Ox = NG
3) Only in connection with Optional specification, ID Jx, Kx = JL
4) Only in connection with Optional specification, ID Jx, Kx = JN

XA01810F-C Liquiphant FTL51B, FTL63
18 Endress+Hauser
Position 3, 4 = A8
Without Optional specification, ID Mx = MR, MS
A, B P1 P2 P3 P4 P5
TpTaTpTaTpTaTpTaTpTa
T6 1) –50 70
65 2)
74 70
65 2)
80 66 80 –40
–50 3)
–52 4)
–50 –40
–50 3)
–52 4)
T5 1) –50 70
65 2)
90 70
65 2)
95 70 95 –50
T4 –50 70
65 2)
112 70
65 2)
130 62 130 –50
T3...T1 –50 70
65 2)
112 70
65 2)
150 53 150 –50
1) In connection with Position 3, 4 = A8 and Optional specification, ID Nx, Ox = NG: The temperature classes change
to T4...T1
2) Only in connection with Position 3, 4 = A8 and Optional specification, ID Nx, Ox = NG
3) Only in connection with Optional specification, ID Jx, Kx = JL
4) Only in connection with Optional specification, ID Jx, Kx = JN
With Optional specification, ID Mx = MR, MS
A, B P1 P2 P3 P4 P5
TpTaTpTaTpTaTpTaTpTa
T6 1) –50 70
65 2)
80 70
65 2)
80 69 80 –40
–50 3)
–52 4)
–50 –40
–50 3)
–52 4)
T5 1) –50 70
65 2)
95 70
65 2)
95 70 95 –50
T4 –50 70
65 2)
130 70
65 2)
130 70 130 –50
T3...T1 –50 70
65 2)
150 70
65 2)
150 70 150 –50
1) In connection with Position 3, 4 = A8 and Optional specification, ID Nx, Ox = NG: The temperature classes change
to T4...T1
2) Only in connection with Position 3, 4 = A8 and Optional specification, ID Nx, Ox = NG
3) Only in connection with Optional specification, ID Jx, Kx = JL
4) Only in connection with Optional specification, ID Jx, Kx = JN

Liquiphant FTL51B, FTL63 XA01810F-C
Endress+Hauser 19
Position 3, 4 = GA
Without Optional specification, ID Mx = MR, MS
CP1 P2 P3 P4 P5
TpTaTpTaTpTaTpTaTpTa
T6 –50 62 62 62 80 49 80 –40 –50 –40
T5...T1 –50 70 80 70 80 70 80 –40 –50 –40
With Optional specification, ID Mx = MR, MS
CP1 P2 P3 P4 P5
TpTaTpTaTpTaTpTaTpTa
T6 –50 62 62 62 80 59 80 –40 –50 –40
T5...T1 –50 70 80 70 80 70 80 –40 –50 –40

XA01810F-C Liquiphant FTL51B, FTL63
20 Endress+Hauser
Zone 20, Zone 21
Zone 21
Zone 20
A, B
–50 ≤ Tp ≤ +150 –40 ≤ Ta ≤ +60
–50 ≤ Ta ≤ +60 1)
–52 ≤ Ta ≤ +60 2)
Zone 20: T200 –25 to +165 3)
Zone 21: TL –48 to +155 4)
1) Only in connection with Optional specification, ID Jx, Kx = JL
2) Only in connection with Optional specification, ID Jx, Kx = JN
3) With 200 mm dust deposit
4) With dust accumulation TL
C
–50 ≤ Tp ≤ +80 –40 ≤ Ta ≤ +60 Zone 20: T200 –25 to +95 1)
Zone 21: TL –35 to +85 2)
1) With 200 mm dust deposit
2) With dust accumulation TL