Endress+Hauser Liquiphant FTL51B Firmware update

Products Solutions Services
Safety Instructions
Liquiphant FTL51B
4-20 mA HART
II 1/2 G Ex ia IIC T6...T1 Ga/Gb
II 2 G Ex ia IIC T6...T1 Gb
II 1/2 D Ex ia IIIC T200xxx°C Da / Ex ia IIIC TLxxx°C Db
II 2 D Ex ia IIIC TLxxx°C Db
0
XA03005F-A/00/EN/01.23-00
71588156
2023-01-23

Liquiphant FTL51B XA03005F-A
Endress+Hauser 3
Liquiphant FTL51B
4-20 mA HART
Table of contents
Associated documentation ......................................... 4
Supplementary documentation ..................................... 4
General notes: Combined approval ................................. 4
Manufacturer's certificates ......................................... 4
Manufacturer address ............................................. 5
Other standards ................................................... 5
Extended order code ............................................... 5
Safety instructions: General ........................................ 8
Safety instructions: Special conditions .............................. 8
Safety instructions: Installation .................................... 9
Safety instructions: Zone 0 ........................................ 12
Safety instructions: Zone separation Zone 0, Zone 1 ................ 12
Temperature tables .............................................. 12
Connection data ................................................. 15

XA03005F-A Liquiphant FTL51B
4 Endress+Hauser
Associated
documentation
This document is an integral part of the following Operating
Instructions:
BA02213F
Supplementary
documentation
Explosion protection brochure: CP00021Z
The Explosion-protection brochure is available:
• In the download area of the Endress+Hauser website:
www.endress.com -> Downloads -> Brochures and Catalogs ->
Text Search: CP00021Z
• On the CD for devices with CD-based documentation
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
Manufacturer's
certificates
UK Declaration of Conformity
Declaration Number:
UK_00529
The UK Declaration of Conformity is available:
In the download area of the Endress+Hauser website:
www.endress.com -> Downloads -> Declaration ->
Type: UKCA Declaration -> Product Code: ...

Liquiphant FTL51B XA03005F-A
Endress+Hauser 5
UKCA type-examination certificate
Certificate number:
CML 22UKEX1611X
List of applied standards: See UK Declaration of Conformity.
Manufacturer
address
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.
Structure of the extended order code
FTL51B – ************* + 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.

XA03005F-A Liquiphant FTL51B
6 Endress+Hauser
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
Basic specifications
Position 1, 2 (Approval)
Selected option Description
FTL51B UK UK Ex II 1/2 G Ex ia IIC T6...T1 Ga/Gb
UK Ex II 2 G Ex ia IIC T6...T1 Gb
UK Ex II 1/2 D Ex ia IIIC T200xxx°C Da / Ex ia IIIC TLxxx°C Db
UK Ex II 2 D Ex ia IIIC TLxxx°C Db
Position 3, 4 (Output)
Selected option Description
FTL51B BA FEL60H, 2-wire 4...20 mA HART+test button
Position 5 (Display, Operation)
Selected option Description
FTL51B A W/o; switch
E Graphic display with touch control
F Graphic display with touch control+Bluetooth

Liquiphant FTL51B XA03005F-A
Endress+Hauser 7
Position 6 (Housing, Material)
Selected option Description
FTL51B B Single compartment; Alu, coated
M Dual compartment L-shape; Alu, coated
N Dual compartment L-shape; 316L
Position 7 (Electrical Connection)
Selected option Description
FTL51B B Gland M20, brass nickel plated, IP66/68 NEMA Type 4X/6P
C 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
H Thread NPT1/2, IP66/68 NEMA Type 4X/6P
Optional specifications
ID Jx, Kx (Test, Certificate, Declaration)
Selected option Description
FTL51B JL Ambient temperature -50°C/-58°F
JN Ambient temperature -52°C/-62°F
ID Mx (Sensor Design)
Selected option Description
FTL51B MR Temperature separator
MS Pressure tight feed through (Second line of defence)
ID Nx, Ox (Accessory Mounted)
Selected option Description
FTL51B NA 1) Overvoltage protection
1) Only in connection with Position 6 = M, N

XA03005F-A Liquiphant FTL51B
8 Endress+Hauser
ID Px, Rx (Accessory Enclosed)
Selected option Description
FTL51B PA 1) Weather protection cover, 316L
PB 2) Weather protection cover, plastic
1) Only in connection with Position 6 = M, N
2) Only in connection with Position 6 = B
Safety
instructions:
General
• The device is intended to be used in explosive atmospheres as defined
in the scope of EN 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
• Comply with the installation and safety instructions in the Operating
Instructions.
• 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 XA03005F-A
Endress+Hauser 9
• 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: →  12, "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.
• 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).
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 Associated intrinsically safe power supply units
5 Potential equalization line
6 Local potential equalization

XA03005F-A Liquiphant FTL51B
10 Endress+Hauser
• After aligning (rotating) the enclosure, retighten the fixing screw.
• 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. Do not operate the
sensor in Zone 0 if connecting to an intrinsically safe circuit of
Category Ex ib.
• When the device is connected to certified intrinsically safe circuits of
Category Ex ib for Equipment Groups IIIC and IIIB, the type of
protection changes to Ex ib IIIC and Ex ib IIIB. Do not operate the
sensor in Zone 20 if connecting to an intrinsically safe circuit of
Category Ex ib.
• 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.
• 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.
• Only use genuine spare parts from Endress+Hauser which are
specified for the device.
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.

Liquiphant FTL51B XA03005F-A
Endress+Hauser 11
Permitted ambient conditions
II 1/2 D Ex ia IIIC T200xxx°C Da / Ex ia IIIC TLxxx°C 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
II 2 D Ex ia IIIC TLxxx°C Db
Process
Zone 21
Enclosure
Zone 21
Continuous dust deposits
or temporary explosive dust
atmosphere
Dust accumulation or temporary
explosive dust atmosphere
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.
Optional specification, ID Nx, Ox = NA
The intrinsically safe input power circuit of the device is isolated from
ground. The dielectric strength is at least 290 Vrms.
Potential equalization
Integrate the device into the local potential equalization.

XA03005F-A Liquiphant FTL51B
12 Endress+Hauser
Optional specification, ID Px, Rx = PA
Connect the weather protection cover to the local potential
equalization.
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
The zone separation wall of the device is made of stainless steel or high
corrosion-resistant alloy of thickness ≥ 1 mm.
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.
Optional specification, ID Px, Rx = PB
When using the weather protection cover: Reduce the admissible
ambient temperature by 10 K.
II 1/2 G Ex ia IIC T6...T1 Ga/Gb
• The specified ambient and process temperature ranges
exclusively refer to the explosion protection and must not be
exceeded. Operationally permitted ambient temperature ranges
can be restricted depending on the version: See Operating
Instructions.
• Do not exceed the max. ambient temperature at the enclosure.
Basic specification, Position 5 = A
Temperature class Process temperature range Ambient temperature range
T6 –40 °C ≤ Tp ≤ +75 °C
–40 °C ≤ Tp ≤ +60 °C
–40 °C ≤ Ta ≤ +50 °C
–40 °C ≤ Ta ≤ +55 °C
T5 –40 °C ≤ Tp ≤ +90 °C –40 °C ≤ Ta ≤ +55 °C
T4...T1 –40 °C ≤ Tp ≤ +120 °C –40 °C ≤ Ta ≤ +50 °C

Liquiphant FTL51B XA03005F-A
Endress+Hauser 13
with Optional specification, ID Mx = MR, MS
Temperature class Process temperature range Ambient temperature range
T6 –40 °C ≤ Tp ≤ +75 °C –40 °C ≤ Ta ≤ +60 °C
T5 –40 °C ≤ Tp ≤ +90 °C –40 °C ≤ Ta ≤ +65 °C
T4 –40 °C ≤ Tp ≤ +125 °C –40 °C ≤ Ta ≤ +65 °C
T3...T1 –40 °C ≤ Tp ≤ +150 °C –40 °C ≤ Ta ≤ +65 °C
Basic specification, Position 5 = E, F
Temperature class Process temperature range Ambient temperature range
T6 –40 °C ≤ Tp ≤ +75 °C
–40 °C ≤ Tp ≤ +60 °C
–40 °C ≤ Ta ≤ +45 °C
–40 °C ≤ Ta ≤ +50 °C
T5 –40 °C ≤ Tp ≤ +90 °C –40 °C ≤ Ta ≤ +50 °C
T4...T1 –40 °C ≤ Tp ≤ +120 °C –40 °C ≤ Ta ≤ +45 °C
with Optional specification, ID Mx = MR, MS
Temperature class Process temperature range Ambient temperature range
T6 –40 °C ≤ Tp ≤ +75 °C –40 °C ≤ Ta ≤ +55 °C
T5 –40 °C ≤ Tp ≤ +90 °C –40 °C ≤ Ta ≤ +60 °C
T4 –40 °C ≤ Tp ≤ +125 °C –40 °C ≤ Ta ≤ +55 °C
T3...T1 –40 °C ≤ Tp ≤ +150 °C –40 °C ≤ Ta ≤ +55 °C
II 1/2 D Ex ia IIIC T200xxx°C Da / Ex ia IIIC TLxxx°C Db
• The specified surface temperature takes into account all direct
heat influences from process heat and self-heating at the
enclosure.
• The T-marking is based on the process temperature of the
compact designs.
• The specified ambient and process temperature ranges
exclusively refer to the explosion protection and must not be
exceeded. Operationally permitted ambient temperature ranges
can be restricted depending on the version: See Operating
Instructions.
• Do not exceed the max. ambient temperature at the enclosure.
For detailed information see Technical Information.

XA03005F-A Liquiphant FTL51B
14 Endress+Hauser
II 1/2 D Ex ia IIIC T200 135 °C / 155 °C Da /
Ex ia IIIC TL 135 °C / 155 °C Db
II 2 D Ex ia IIIC TL 135 °C / 155 °C Db
Basic specification, Position 5 = A
Maximum surface
temperature
Process temperature range Ambient temperature range
T135 °C –40 °C ≤ Tp ≤ +80 °C –40 °C ≤ Ta ≤ +60 °C
–40 °C ≤ Tp ≤ +100 °C –40 °C ≤ Ta ≤ +55 °C
–40 °C ≤ Tp ≤ +120 °C –40 °C ≤ Ta ≤ +50 °C
with Optional specification, ID Mx = MR, MS
Maximum surface
temperature
Process temperature range Ambient temperature range
T155 °C –40 °C ≤ Tp ≤ +130 °C –40 °C ≤ Ta ≤ +65 °C
–40 °C ≤ Tp ≤ +150 °C –40 °C ≤ Ta ≤ +65 °C
Basic specification, Position 5 = E, F
Maximum surface
temperature
Process temperature range Ambient temperature range
T135 °C –40 °C ≤ Tp ≤ +80 °C –40 °C ≤ Ta ≤ +50 °C
–40 °C ≤ Tp ≤ +100 °C –40 °C ≤ Ta ≤ +45 °C
–40 °C ≤ Tp ≤ +120 °C –40 °C ≤ Ta ≤ +45 °C
with Optional specification, ID Mx = MR, MS
Maximum surface
temperature
Process temperature range Ambient temperature range
T155 °C –40 °C ≤ Tp ≤ +130 °C –40 °C ≤ Ta ≤ +55 °C
–40 °C ≤ Tp ≤ +150 °C –40 °C ≤ Ta ≤ +55 °C

Liquiphant FTL51B XA03005F-A
Endress+Hauser 15
Specific conditions of use:
• The surface temperature is
• for equipment protection level (EPL) Da: T200 135 °C / 155 °C (with
200 mm dust deposit)
• and equipment protection level (EPL) Db: TL 135 °C / 155 °C (with
dust accumulation TL)
• The surface temperature is
for equipment protection level (EPL) Db: TL 135 °C / 155 °C (with dust
accumulation TL)
TL marking:
The assigned surface temperature without dust layer is the same.
Connection data Power supply
Ui ≤ 30 VDC
Ii ≤ 300 mA
Pi ≤ 1 W
Ci ≤ 10 nF
Li = 0
Cable entry parameters
Ex ia IIC
Not relevant.
Ex ia IIIC
Cable gland: Basic specification, Position 7 = B
mandatory for Position 6 = B, M
Thread Clamping range Material Sealing insert O-ring
M20x1,5 ø 8 to 10.5 mm Ms, nickel-plated Silicone EPDM (ø 17x2)
Cable gland: Basic specification, Position 7 = C
preferably for Position 6 = N and possible for Position 6 = B, M
Thread Clamping range Material Sealing insert O-ring
M20x1,5 ø 7 to 12 mm 1.4404 NBR EPDM (ø 17x2)

XA03005F-A Liquiphant FTL51B
16 Endress+Hauser
• The tightening torque refers to cable glands installed by the
manufacturer:
• Recommended torque to connect the cable gland into the
enclosure: 3.75 Nm
• Recommended torque to tighten the cable into the cable
gland: 3.5 Nm
• Maximum torque to tighten the cable into the cable gland:
10 Nm
• This value may be different depending on the type of cable.
However, the maximum value must not be exceeded.
• Only suitable for fixed installation. The operator must pay attention
to a suitable strain relief of the cable.
• To maintain the ingress protection of the enclosure: Install the
enclosure cover, cable glands and blind plugs correctly.
• The cable glands are suitable for a low risk of mechanical danger
(4 Joule) and must be mounted in a protected position if larger
impact energy levels are expected.

www.addresses.endress.com
*71588156*
71588156