Endress+Hauser Liquiphant M FTL50, Liquiphant M FTL50H, Liquiphant M FTL51, Liquiphant M FTL51H Technical Information

Technical Information

Liquiphant M FTL50(H), FTL51(H)

Vibration Limit Switch
Level limit switch for all liquids.
Suitable for use in hazardous areas, food and pharmaceuticals

The function is not affected by flow, turbulence, bubbles,
foam, vibration, bulk solids content or build-up.
The Liquiphant is thus the ideal substitute for float
switches.

FTL50:
Compact design, ideal for mounting in pipes and for
installation in areas difficult to access

FTL51:
With extension pipe up to 3 m
(6 m on request)

FTL50H, FTL51H:
With polished tuning fork and easy-to-clean process
connections and housings for food and pharmaceutical
applications.

High corrosion-resistant AlloyC4 (2.4610) is available for
the fork and process connections for applications in very
aggressive liquids.

EEx ia, EEx de and EEx d protection enable it to be used
in hazardous areas.

Your benefits

• Use in safety systems requiring functional safety
to SIL2/SIL3 in accordance with IEC 61508/
IEC 61511-1

• Large number of process connections to choose from:
universal usage

• Wide variety of electronics, e.g. NAMUR, relay,
thyristor, PFM signal output: the right connection for

Application

The Liquiphant M is a level limit switch for use in all
liquids
– for process temperatures of –50 °C to 150 °C
– for pressures up to 100 bar
– for viscosity up to 10000 mm
– for densities 0.5 g/cm3 or 0.7 g/cm3 other settings

available on request

– foam detection on request

2

/s

every process control system

• PROFIBUS PA protocol:
for commissioning and maintenance

• No calibration: quick, low-cost start-up

• No mechanically moving parts: no maintenance,
no wear, long operating life

• Monitoring of fork for damage: guaranteed function

• FDA approved materials (PFA Edlon)

TI328F/00/en

Table of contents

Liquiphant M FTL50(H), FTL51(H)

Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Level limit detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Function and system design. . . . . . . . . . . . . . . . . . . . . 4

Measuring principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Modularity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Electronic versions for level limit switches . . . . . . . . . . . . . . . . . . 5

Electronic versions for level sensor . . . . . . . . . . . . . . . . . . . . . . . . 5

Galvanic isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Measured variable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Measuring range (detection range) . . . . . . . . . . . . . . . . . . . . . . . . 5

Product density . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Electronic insert FEL51 (AC 2-wire) . . . . . . . . . . . . . . 6

Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Output signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Signal on alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Connectable load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Electronics FEL51 (AC, in compact housing) . . . . . . . . 7

Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Output signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Signal on alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Connectable load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Electronic insert FEL52 (DC PNP) . . . . . . . . . . . . . . . . 8

Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Output signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Signal on alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Connectable load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Electronics FEL52 (DC PNP, in compact housing) . . . . 9

Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Output signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Signal on alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Connectable load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Electronic insert FEL54 (AC/DC with relay output) . 11

Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Output signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Signal on alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Connectable load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Connectable load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Electronic insert FEL56 (NAMUR L-H edge) . . . . . . . 13

Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Output signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Signal on alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Connectable load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Electronic insert FEL58 (NAMUR H-L edge) . . . . . . . 14

Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Output signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Signal on alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Connectable load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Electronics FEL58 (NAMUR H-L edge,

in compact housing). . . . . . . . . . . . . . . . . . . . . . . . . . 15

Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Output signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Signal on alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Connectable load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Electronic insert FEL57 (PFM). . . . . . . . . . . . . . . . . . 16

Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Output signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Signal on alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Connectable load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Electronic insert FEL50A (PROFIBUS PA) . . . . . . . . . 18

Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Output signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Signal on alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Connection and function . . . . . . . . . . . . . . . . . . . . . . 20

Connecting cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Fail-safe mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Switching time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Switch-on behaviour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Performance characteristics. . . . . . . . . . . . . . . . . . . . 20

Reference operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Maximum measured error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Repeatability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Hysteresis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Influence of medium temperature . . . . . . . . . . . . . . . . . . . . . . . 20

Influence of product density . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Influence of medium pressure . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Electronic insert FEL55 (8/16 mA) . . . . . . . . . . . . . . 12

Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Output signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Signal on alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2 Endress+Hauser

Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . 21

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Examples of mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Liquiphant M FTL50(H), FTL51(H)

Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Ambient temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Ambient temperature limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Climate class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Degree of protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Vibration resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Electromagnetic compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Medium conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Medium temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Thermal shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Medium pressure pe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Test pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

State of aggregation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Density . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Viscosity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Solids content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Mechanical construction . . . . . . . . . . . . . . . . . . . . . . 25

Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Dimensions in mm (1 mm = 0,0394 in) . . . . . . . . . . . . . . . . . . . 26

Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Process connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

System Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Human interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Electronic inserts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Compact housings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Operating concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Certificates and approvals . . . . . . . . . . . . . . . . . . . . . 35

General approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Other certificates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Combination of housings and electronic inserts . . . . . . . . . . . . . 35

Ordering information . . . . . . . . . . . . . . . . . . . . . . . . 37

Product structure Liquiphant M

FTL50, FTL51 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Product structure Liquiphant M

FTL50H, FTL51H . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Welding neck G ¾ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Welding neck G 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Welding neck G 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Welding neck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

DRD welding flange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Lap joint flange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Lap joint flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Sliding sleeves for unpressurised operation . . . . . . . . . . . . . . . . . 46

High pressure sliding sleeves . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Transparent cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Cover with sight glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Circular connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Supplementary Documentation . . . . . . . . . . . . . . . . . 49

Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Technical Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Functional Safety (SIL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Safety Instructions (ATEX) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

3 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

Application

Level limit detection Maximum or minimum detection in tanks or pipes containing all kinds of liquids, including use in hazardous

areas, food and pharmaceuticals

L00-FTL5xxxx-11-05-xx-xx-000

Function and system design

Measuring principle The sensor's fork vibrates at its intrinsic frequency.

This frequency is reduced when covered with liquid. The change in frequency then activates a limit switch.

Modularity

Level limit switch

Liquiphant M FTL with electronic versions
FEL51, FEL52, FEL54

Level sensor

Liquiphant M FTL with electronic versions
FEL55, FEL56, FEL57, FEL58
for connecting to a separate switching unit or
or an isolating amplifier FEL50A
for connecting to PROFIBUS PA segment

FEL51/52/54

FEL55/56/57/58/50A

L00-FTL5xxxx-15-05-xx-xx-000

Ex i

Switching unit
PLC
Isolating
amplifier
Segment
coupler

…

E

X

…

E

X

L00-FTL5xxxx-15-05-xx-en-000

4 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

Electronic versions for level limit switches

Electronic versions for level sensor

FEL51:
Two-wire AC version;
Switch the load directly into the power supply circuit via the thyristor.

FEL52:
Three-wire DC version;
Switch the load via the transistor (PNP) and separate connection.

FEL54:
Universal current version with relay output;
Switch the loads via 2 floating change-over contacts.

FEL55:
For separate switching unit; signal transmission 16/8 mA along two-wire cabling.

FEL56:
For separate switching unit; signal transmission L-H edge 0.6…1.0 / 2.2…2.8 mA
to EN 50227 (NAMUR) along two-wire cabling.

FEL58:
For separate switching unit; signal transmission H-L edge 2.2…3.5 / 0.6…1.0 mA
to EN 50227 (NAMUR) along two-wire cabling.
Checking of connecting cabling and other devices by pressing a key on the electronic insert.

FEL57:
For separate switching unit; PFM signal transmission;
Current pulses superposed on the power supply along the two-wire cabling.
Cyclical checking from the switching unit without changing levels.

FEL50A:
For connecting to PROFIBUS PA;
Cyclic and acyclic data exchange acc. to PROFIBUS PA Profile 3.0 Discrete Input

Galvanic isolation FEL51, FEL52, FEL50A:

Between sensor and power supply

FEL54:
Between sensor and power supply and load

FEL55, FEL56, FEL57, FEL58:
See Switching unit connected

Design FTL50:

Compact

FTL51:
With extension pipe

FTL50H:
Compact, with polished tuning fork and hygienic process connections

FTL51H:
With extension pipe, polished tuning fork and hygienic process connections

Input

Measured variable Level (limit value)

Measuring range (detection range)

FTL50:
Depends on mounting point.

FTL51:
Depends on mounting point and the pipe extension. Standard 3000 mmm (up to 6000 mm on request)

3

Product density Adjustment on the electronic insert > 0.5 g/cm

or > 0.7 g/cm3 (other on request)

Endress+Hauser 5

Electronic insert FEL51 (AC 2-wire)

Power supply Supply voltage: 19...253 V AC

Power consumption: < 0.83 W
Residual current consumption: < 3.8 mA
Short-circuit protection
FEM51 overvoltage protection: overvoltage category III

Electrical connection Two-wire AC connection

Always connect in series with a load!

Check the following:

• The residual current in blocked state
(up to 3.8 mA)

• that for low voltage
– the voltage drop across the load is such

that the minimum terminal voltage at the
electronic insert (19 V) when blocked is
not undershot.

– the voltage drop across the electronics when

switched through is observed
(up to 12 V)

• that a relay cannot de-energise with holding
power below 3.8 mA.
If this is the case, a resistor should be
connected parallel to the relay.
(RC module available on request).

• When selecting the relay, pay attention to
the holding power/rated power
(See "Connectable load")

12

min.
19 V

1A

*

R

L1

NNPE

U~ max. 253 V AC

50/60 Hz

Liquiphant M FTL50(H), FTL51(H)

FEL51

External load R

*

(Ground)

be connectedmust

L00-FTL5xxxx-04-05-xx-en-007

Output signal

Safety mode Level Output signal LEDs

green red

I

L

12

I

L

< 3.8 mA

L00-FTL2xxxx-07-05-

xx-xx-000

= load current

(switched through)

= residual current

(blocked)

= lit

= unlit

Max.

Min.

< 3.8 mA

12

I

L

12

< 3.8 mA

12

Signal on alarm Output signal on power failure or in the event of damaged sensor: < 3.8 mA

Connectable load • For relays with a minimum holding power/rated power > 2.5 VA at 253 V AC (10 mA) or

> 0.5 VA at 24 V AC (20 mA)

• Relays with a lower holding power/rated power can be operated by means of an RC module connected
inparallel

• For relays with a maximum holding power/rated power < 89 VA at 253 V AC or < 8.4 VA at 24 V AC

• Voltage drop across FEL51 max. 12 V

• Residual current with blocked thyristor max. 3.8 mA

• Load switched directly into the power supply circuit via the thyristor.
Transient (40 ms) max. 1.5 A, max. 375 VA at 253 V or max. 36 VA at 24 V (not short-circuit proof)

L00-FTL5xxxx-04-05-xx-xx-001

6 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

Electronics FEL51 (AC, in compact housing)

Power supply Supply voltage: 19...253 V AC

Power consumption: < 0.83 W
Residual current consumption: < 3.8 mA
Short-circuit protection
FEM51 overvoltage protection: overvoltage category III

Electrical connection Two-wire AC connection

Always connect in series with a load!

Check the following:

• The residual current in
blocked state (up to 3.8 mA)

• that for low voltage
– the voltage drop across

the load is such that the
minimum terminal voltage
at the electronic insert
(19 V) when blocked is not
undershot.

– the voltage drop across

the electronics when switched
through is
observed (up to 12 V).

• That a relay
cannot de-energise with
holding power below 3.8 mA.
If this is the case, a resistor
should be connected parallel
to the relay.
(RC module available on request).

Connector

FTL5#(H)- #######C3#

FTL5#(H)- #######D3#
(Pg11)

or

FTL5#(H)- #######E3#
(NPT ½")

MAX MIN

(GN/YE) (GN/YE)

1

(BU)

3

(BN)

>19V

R

1.0 A

L1

1

>19V

1.0 A

L1

N

3

R

N

(Ground)

(Ground)

PE

(Ground)

PE

(Ground)

1

(BU)

L1

PE

1

L1

PE

L00-FTL5xxxx-04-05-xx-en-008

>19V

1.0 A

>19V

1.0 A

2

(BK)

R

N

2

R

N

Output signal

Safety mode Level Output signal LEDs

green red

I

L

13

I

L

< 3.8 mA

L00-FTL2xxxx-07-05-

xx-xx-000

= load current

(switched through)

= residual current

(blocked)

= lit

= unlit

Max.

Min.

< 3.8 mA

13

I

L

12

< 3.8 mA

12

Signal on alarm Output signal on power failure or in the event of damaged sensor: < 3.8 mA

Connectable load • For relays with a minimum holding power/rated power > 2.5 VA at 253 V AC (10 mA) or

> 0.5 VA at 24 V AC (20 mA)

• Relays with a lower holding power/rated power can be operated by means of an RC module connected
inparallel

• For relays with a maximum holding power/rated power < 89 VA at 253 V AC or < 8.4 VA at 24 V AC

• Voltage drop across FEL51 max. 12 V

• Residual current with blocked thyristor max. 3.8 mA

• Load switched directly into the power supply circuit via the thyristor.
Transient (40 ms) max. 1.5 A, max. 375 VA at 253 V or max. 36 VA at 24 V (not short-circuit proof)

L00-FTL5xxxx-04-05-xx-xx-001a

Endress+Hauser 7

Electronic insert FEL52 (DC PNP)

Power supply Supply voltage: 10…55 V DC

Ripple: max. 1.7 V, 0…400 Hz
Current consumption: max. 15 mA
Power consumption: max. 0.83 W
Reverse polarity protection
Overvoltage protection FEL52: overvoltage category III

Electrical connection Three-wire DC connection

Preferably used with programmable
logic controllers (PLC).
DI module as per EN 61131-2.
Positive signal at switching output of
the electronics (PNP);
Output blocked on reaching limit.

Liquiphant M FTL50(H), FTL51(H)

FEL52

12 3

(+)

Output signal

I

L

< 100 μA

L00-FTL2xxxx-07-05-

xx-xx-000

= load current

(switched through)

= residual current

(blocked)

= lit

= unlit

0.5 A

e.g.
Relay
PLC

–

L–

L+

...

U– 10…55 V DC

Safety mode Level Output signal LEDs

green red

L+ +

I

L

13

Max.

< 100 µA

13

L+ +

I

L

13

Min.

< 100 µA

13

L00-FTL5xxxx-04-05-xx-en-001

L00-FTL5xxxx-04-05-xx-xx-004

Signal on alarm Output signal on power failure or in the event of damaged sensor: < 100 μA

Connectable load • Load switched via the transistor and separate PNP connection, max. 55 V DC

• Load current max. 350 mA (pulsed overload and short-circuit protection)

• Residual current < 100 μA (with transistor blocked)

• Capacitive load max. 0.5 μF at 55 V, max. 1.0 μF at 24 V

• Residual voltage < 3 V (with transistor switched through)

8 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

Electronics FEL52 (DC PNP, in compact housing)

Power supply Supply voltage: 10…55 V DC

Ripple: max. 1.7 V, 0…400 Hz
Current consumption: max. 15 mA
Power consumption: max. 0.83 W
Reverse polarity protection
Overvoltage protection FEL52: overvoltage category III

Electrical connection Three-wire DC connection

Preferably used with programmable
logic controllers (PLC).
DI module as per EN 61131-2.
Positive signal at switching
output of the electronics (PNP);
Output blocked on reaching limit.

Connector

FTL5#(H)- #######N3#
(M12x1)

52018763

FTL5#(H)- #######N3#
(M12x1)

52010285 / 52024216

MAX MIN

1

2

3

(BN)

4

(BK)

0.5 A

L– L+

(WT)

(BU)

R

1

2

(WT)

(BU)

L– L+

(BN)

3

4

(BK)

R

0.5 A

Output signal With valve connector or cable tail

FTL5#(H)- #######D3#
(Pg11)

or

FTL5#(H)- #######E3#
(NPT ½")

FTL5#(H)- #######C3#

L– L–L+ L+

PE PE

(Ground) (Ground)

(GN/YE)

1

(BU)

3

(BN)

L– L–L+ L+

PE PE

(Ground) (Ground)

R

0.5 A

R

0.5 A

2

(BK)

+

–

(GN/YE)

1

(BU)

+

–

Safety mode Level Output signal LEDs

green red

11

R

(BN)

R

L00-FTL5xxxx-04-05-xx-en-010

0.5 A

3

0.5 A

22

33

+

–

2

(BK)

+

–

L+ +

I

L

32

I

L

< 100 μA

L00-FTL2xxxx-07-05-

xx-xx-000

= load current

(switched through)

= residual current

(blocked)

= lit

= unlit

Max.

Min.

L+ +

< 100 µA

32

L+ +

I

L

23

L+ +

< 100 µA

23

L00-FTL5xxxx-04-05-xx-xx-004a

Endress+Hauser 9

With M12x1 connector 52010285 / 52024216 (without LEDs)

gn

ye

rd

Safety mode Level Output signal LEDs

Liquiphant M FTL50(H), FTL51(H)

L00-FTL5xxxx-16-05-

xx-xx-002

Max.

I

L

< 100 μA

= load current

(switched through)

= residual current

(blocked)

= lit

Min.

= unlit

L00-FTL2xxxx-07-05-

xx-xx-000

With M12x1 connector 52018763 (with LEDs)

ye 1

ye 2

L00-FTL5xxxx-16-05-

xx-xx-001

gn

Safety mode Level Output signal LEDs

Max.

I

L

< 100 μA

= load current

(switched through)

= residual current

(blocked)

= lit

Min.

= unlit

L00-FTL2xxxx-07-05-

xx-xx-000

L+ –

I

L

12

L+ –

< 100 µA

12

L+ –

I

L

14

L+ –

< 100 µA

14

L00-FTL5xxxx-04-05-xx-xx-010

L+ –

I

L

12

L+ –

< 100 µA

12

L+ –

I

L

14

L+ –

< 100 µA

14

L00-FTL5xxxx-04-05-xx-xx-011

Signal on alarm Output signal on power failure or in the event of damaged sensor: < 100 μA

Connectable load • Load switched via the transistor and separate PNP connection, max. 55 V DC

• Load current max. 350 mA (pulsed overload and short-circuit protection)

• Residual current < 100 μA (with transistor blocked)

• Capacitive load max. 0.5 μF at 55 V, max. 1.0 μF at 24 V

• Residual voltage < 3 V (with transistor switched through)

10 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

Electronic insert FEL54 (AC/DC with relay output)

Power supply Supply voltage: 19…253 V AC, 50/60 Hz or 19…55 V DC

Power consumption: max. 1.3 W
Reverse polarity protection
Overvoltage protection FEL54: overvoltage category III

Electrical connection Universal current connection with relay output

Power supply:
Please note the different voltage ranges
for AC and DC.

Output:
When connecting an instrument with
high inductance, provide a spark arrester
to protect the relay contact.
A fine-wire fuse (depending on the
load connected) protects the relay
contact on short-circuiting.
Both relay contacts switch simultaneously.

* When jumpered, the relay

output works with NPN logic.

0.5 A

FEL54

12 678345

*

Output signal

** See below "Connectable load"

= relay energised

= relay de-energised

= lit

= unlit

L00-FTL2xxxx-07-05-

xx-xx-001

NC

NO

C

a

u

N

L1
L+

U~ 19…253 V AC, 50/60 Hz
U– 19… 55 V DC

PE

(Ground)

L–

...

** **

NO

r

a

Safety mode Level Output signal LEDs

green red

Max.

Min.

354

354

354

354

687

687

687

687

L00-FTL5xxxx-04-05-xx-xx-005

NC

C

r

u

L00-FTL5xxxx-04-05-xx-xx-002

Signal on alarm Output signal on power failure or in the event of damaged sensor: relay de-energised

Connectable load • Loads switched via 2 floating change-over contacts (DPDT)

• I~ max. 6 A (EEx d 4 A), U~ max. 253 V AC; P~ max. 1500 VA, cos ϕ = 1, P~ max. 750 VA, cos ϕ > 0.7

•I% max. 6 A (EEx d 4 A) to 30 V, I% max. 0.2 A to 125 V

• When connecting a low-voltage circuit with double isolation according to IEC 1010 the following applies:
total of voltages of relay output and power supply max. 300 V

Endress+Hauser 11

Electronic insert FEL55 (8/16 mA)

1 2

FEL55

–

EEx ia

+

E

X

E

X

U– 1

1…36 V DC

...

e.g. PLC

Power supply Supply voltage: 11...36 V DC

Power consumption: < 600 mW
Reverse polarity protection
Overvoltage protection FEL55: overvoltage category III

Electrical connection Two-wire connection for separate switching unit

For connecting to programmable
logic controllers (PLC).
AI module 4...20 mA to EN 61131-2.
Output signal jump from high to low
current on limit.

EEx ia

Liquiphant M FTL50(H), FTL51(H)

FEL55

12

X

E

Output signal

~ 16 mA

~8 mA

L00-FTL2xxxx-07-05-

xx-xx-000

= 16 mA ± 5 %

= 8 mA ± 6 %

= lit

= unlit

E

X

–

+

...

U– 1

1…36 V DC

e.g. PLC

L00-FTL5xxxx-04-05-xx-en-000

Safety mode Level Output signal LEDs

green red

+

~16 mA

21

Max.

+

~8 mA

21

+

~16 mA

21

Min.

+

~8 mA

21

L00-FTL5xxxx-04-05-xx-xx-006

Signal on alarm Output signal on power failure or in the event of damaged sensor: < 3.6 mA

Connectable load • R = (U - 11 V) : 16.8 mA

• U = connection voltage: 11…36 V DC

Example:
PLC with 250 Ω loop powered input

250 Ω = (U – 11V) / 16, 8 mA
4,2 [Ω/Α] = U – 11 V
U = 15,2 V

12 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

Electronic insert FEL56 (NAMUR L-H edge)

Power supply Power consumption: < 6 mW bei I < 1 mA; < 38 mW bei I = 2,2...4 mA

Connection data interface: IEC 60947-5-6

Electrical connection Two-wire connection for separate switching unit

For connecting to isolating amplifiers
acc. to NAMUR (IEC 60947-5-6),
e.g. FXN421, FXN422, FTL325N,
FTL375N or Commutec SIN100,
SIN110 from Endress+Hauser.
Output signal jump from low
to high current on limit.

(L-H edge)

12

FEL56

Output signal

Connecting to multiplexer:
Set clock time to min. 2 s.

EEx ia

X

E

H

I

L

–

+

Isolating amplifier
to

IEC 60947-5-6

(NAMUR)

E

X

Safety mode Level Output signal LEDs

green red

0.6 …

+

1.0 mA

Max.

21

2.2 …

+

2.8 mA

21

L00-FTL5xxxx-04-05-xx-en-004

L00-FTL5xxxx-07-05-

xx-xx-002

= lit

= flashes

= unlit

Min.

0.6 …

+

1.0 mA

21

2.2 …

+

2.8 mA

21

L00-FTL5xxxx-04-05-xx-xx-003

Signal on alarm Output signal in the event of damaged sensor: > 2.2 mA

Connectable load • See Technical Data of isolating amplifier connected according to IEC 60947-5-6 (NAMUR)

Endress+Hauser 13

Liquiphant M FTL50(H), FTL51(H)

Electronic insert FEL58 (NAMUR H-L edge)

Power supply Power consumption: < 6 mW bei I < 1 mA; < 38 mW bei I = 2,2...4 mA

Connection data interface: IEC 60947-5-6

Electrical connection Two-wire connection for separate switching unit

For connecting to isolating amplifiers
acc. to NAMUR (IEC 60947-5-6),
e.g. FXN421, FXN422, FTL325N,
FTL375N or Commutec SIN100,
SIN110 from Endress+Hauser.
Output signal jump from high
to low current on limit.

(H-L edge)

12

FEL58

Output signal

Additional function:
Test key on the electronic insert.
Pressing the key breaks the connection
to the isolating amplifier.

Note!

!

For Ex-d applications, the additional function
can only be used if the housing is not exposed
to an explosive atmosphere.

Connecting to multiplexer:
Set clock time to min. 2 s.

Safety mode Level Output signal LEDs

Max.

EEx ia

H

I

L

–

+

Isolating amplifier
to

IEC 60947-5-6

(NAMUR)

2.2 …

+

3.5 mA

21

0.6 …

+

1.0 mA

21

X

E

E

X

L00-FTL5xxxx-04-05-xx-en-002

green yellow

2.2 …

+

3.5 mA

21

0.6 …

+

1.0 mA

21

L00-FTL5xxxx-04-05-xx-xx-007

L00-FTL5xxxx-07-05-

xx-xx-002

= lit

= flashes

= unlit

Min.

Signal on alarm Output signal in the event of damaged sensor: < 1.0 mA

Connectable load • See Technical Data of isolating amplifier connected according to IEC 60947-5-6 (NAMUR)

• Connection also to isolating amplifiers which have special safety circuits (I > 3.0 mA)

14 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

Electronics FEL58 (NAMUR H-L edge, in compact housing)

Power supply Power consumption: < 6 mW bei I < 1 mA; < 38 mW bei I = 2,2...4 mA

Connection data interface: IEC 60947-5-6

Electrical connection Two-wire connection for separate switching unit

For connecting to isolating
amplifiers acc. to
NAMUR (IEC 60947-5-6),
e.g. FXN421, FXN422,
FTL325N, FTL375N
or Commutec SIN100,
SIN110 from Endress+Hauser.
Output signal jump from high
to low current on limit.

(H-L edge)

Connector

FTL5#(H)- #######N3#
(M12x1)

52018763

FTL5#(H)- #######N3#
(M12x1)

52010285 / 52024216

MAX MIN

2

(WT)

3

(BU)

–

1

(BN)

4

(BK)

1

2

3

(BN)

4

(BK)

–+

(WT)

(BU)

+

Output signal

Additional function:
If the test magnet is held
against the marking on the
nameplate, the output signal
is inverted.

Connecting to multiplexer:
Set clock time to min. 3 s.

The NAMUR interface has
a defined power consumption.
Thus, it is not possible to use
the M12 connector with
integrated LED (52018763).

FTL5#(H)- #######D3#
(Pg11)

or

FTL5#(H)- #######E3#
(NPT ½")

FTL5#(H)- #######C3#

(BU)

1

3

–

+

1

3

(BN)

+

–

(BU)

1

+

1

+

Safety mode Level Output signal LEDs

green yellow

2.2…

+–

3.5 mA

13

Max.

0.6…

+–

1.0 mA

13

2

–

2

(BK)

–

L00-FTL5xxxx-04-05-xx-en-009

2.2…

+–

3.5 mA

12

0.6…

+–

1.0 mA

12

L00-FTL5xxxx-04-05-xx-xx-007a

L00-FTL5xxxx-07-05-

xx-xx-002

= lit

= flashes

= unlit

Min.

Signal on alarm Output signal in the event of damaged sensor: < 1.0 mA

Connectable load • See Technical Data of isolating amplifier connected according to IEC 60947-5-6 (NAMUR)

• Connection also to isolating amplifiers which have special safety circuits (I > 3.0 mA)

Endress+Hauser 15

Electronic insert FEL57 (PFM)

Power supply Supply voltage: 9,5...12,5 V DC

Current consumption: 10...13 mA
Power consumption: < 150 mW
Reverse polarity protection

Electrical connection Two-wire connection for separate switching unit

For connecting to switching units
Nivotester FTL320, FTL325P,
FTL370, FTL372, FTL375P
(also with cyclical checking)
Commutec SIF101, SIN111
from Endress+Hauser.
Output signal jump of PFM signal
from high to low frequency
when sensor is covered.
Switching between minimum/maximum
safety in the Nivotester.

Additional function "cyclical checking":
After interruption of the power supply,
a test cycle is activated which checks
the sensor and electronics without any
change in level.
Approved for overfill protection acc. to WHG,
Germany.
The following can be switched at the
electronic insert:

– Standard (STD):

for low corrosive liquids;
simulation approx. 8 s
tuning fork exposed – covered – exposed.

– Extended (EXT):

for highly corrosive liquids;
simulation approx. 41 s
tuning fork exposed – covered – corroded –
exposed.

The check is activated and monitored at the
switching unit.

EEx ia

PFM
50 /
150 Hz

Liquiphant M FTL50(H), FTL51(H)

FEL57

12

X

E

E

X

–+

78

33 34

37 38

d4 d2

z4 z2

z6 d6

21

Nivotester
FTL320
FTL325P 1CH
FTL325P 3CH

FTL370/372
FTL375P 1CH
Input 1

FTL372
FTL375P 2CH
Input 2

FTL375P 3CH
Input 3

Commutec S
SIF101, SIF111

L00-FTL5xxxx-04-05-xx-en-003

16 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

Switching behaviour of the connected device:

Output signal

Fail-safe mode
set at
switching unit

Max.

Max.

Max.

Max.

Min.

Min.

Min.

Min.

Setting
at FEL57

STD

EXT

STD

EXT

STD

EXT

STD

EXT

Fork

free

free

covered

covered

free

free

covered

covered

Switching status of relay in switching unit
on = energised off = de-energised

Test start End of test start
(power off) (power on)

>3s

on

on

off

off

off

off

on

on

off

off

off

off

~3son

~3son

~3son

~3son

~5soff

~5soff

off

off

~5soff

*

~7soff

*

~5soff

*

~5soff

*

~2son

~2son

~3son

on

~35son

~2soff

~35soff

off

~30son

on

off

~3soff

L00-FTL5xxxx-05-05-xx-en-000

on

on

* De-energised on power supply failure

Please note this switching response and function of the plant, especially when replacing a Liquiphant with an
EL17Z or FEL37 electronic insert by a Liquiphant M with the FEL57 electronic insert.

Safety mode Level Output signal

(PFM)

150 Hz

LEDs
green yellow

= lit

50 Hz

L00-FTL5xxxx-04-05-xx-xx-008

L00-FTL2xxxx-07-05-

xx-xx-000

= unlit

Signal on alarm Output signal on power failure or in the event of damaged sensor: 0 Hz

Connectable load • Floating relay contacts in the connected switching unit Nivotester FTL320, FTL325P, FTL370, FTL372,

FTL375P or Commutec SIF101, SIF111

• For contact load see the Technical Data of the switching unit

Endress+Hauser 17

Electronic insert FEL50A (PROFIBUS PA)

Electrical connection Two-wire connection for power supply and data transfer

Liquiphant M FTL50(H), FTL51(H)

For connecting to PROFIBUS PA

Additional functions:

– Digital communication enables the

representation, reading and editing
of the following parameters:
Fork frequency, switch-on frequency,
switch-off frequency, switch-on time and
switch-off time, status, measured value,

density switch.
– Matrix locking possible
– Switch to WHG mode possible

(WHG approval).
– For a detailed description see BA198F

– You can also visit

www.profibus.com for more information

12

PA– PA +

...

U– 9…32 V DC

Segment coupler

FEL50A

–
–

PROFIBUS PA

–
–

X

E

E

X

L00-FTL5xxxx-04-05-xx-en-005

PC with Commuwin II
Proficard or Profiboard

Segment coupler

PROFIBUS DP

X

E

PROFIBUS PA

E

X

PLC

L00-FTL5xxxx-04-05-xx-en-006

18 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

Output signal

Setting Level LEDs

not
inverted

= lit inverted

= unlit

L00-FTL2xxxx-07-05-

xx-xx-000

Signal on alarm • Failure information can be opened using the following interfaces:

Yellow LED flashing, status code, diagnostic code; see BA198F

FEL50A

green yellow

OUT_D = 0
PA bus signal

OUT_D = 1
PA bus signal

OUT_D = 1
PA bus signal

OUT_D = 0
PA bus signal

L00-FTL5xxxx-04-05-xx-xx-009

Endress+Hauser 19

Connection and function

Liquiphant M FTL50(H), FTL51(H)

Connecting cables • Electronic inserts: cross-section max. 2.5 mm2; strand in ferrule to DIN 46228

• Protective earth in housing: cross-section max. 2.5 mm

2

• External equipotential bonding connection on housing: cross-section max. 4 mm

Fail-safe mode Minimum/maximum residual current safety selectable on electronic insert

(with FEL57 on Nivotester only)

Max. = maximum safety:
The output switches to the power fail response when the fork is covered
For use with overfill protection for example

Max. = minimum safety:
The output switches to the power fail response when the fork is exposed
For use with dry running protection for example

Switching time When fork is covered: approx. 0.5 s

When fork is exposed: approx. 1.0 s
Other switching times on request

Additionally configurable for PROFIBUS PA: 0.5...60 s

Switch-on behaviour When switching on the power supply, the output assumes the alarm signal.

After max. 3 s it assumes the correct switching mode (Exception: FEL57)

Performance characteristics

2

Reference operating conditions

Ambient temperature: 23 °C

Medium temperature: 23 °C

Product density: 1 g/cm

3

(water)

Viscosity: 1 mm2/s

Medium pressure p

: 0 bar

e

Sensor mounting: vertical from above

Density switch: to > 0.7

Maximum measured error Specified by mounting position: max. +/–1 mm

Repeatability 0.1 mm

Hysteresis Approx. 2 mm

Influence of medium

Max. +1.8…–2.8 mm (–50…+150 °C)

temperature

3

Influence of product density Max. +4.8…–3.5 mm (0.5…1.5 g/cm

)

Influence of medium pressure Max. 0…–2.5 mm (–1…64 bar)

Switchpoint
for
reference conditions

13 mm

L00-FTL5xxxx-06-05-xx-en-000

20 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

Operating conditions

Installation Installation instructions

Switch points on the sensor depend on the mounting position, with reference to water,

3

density 1 g/cm

, 23 °C, pe 0 bar.

4mm

13 mm

Mounting from above Mounting from below Mounting from the side

!

Examples of mounting Examples of mounting with regard to the viscosity ν of the liquid and the amount of build-up

Note!
The switchpoints of the Liquiphant M are at other positions to those of the previous version Liquiphant II.

Optimum mounting, without problem even with high viscosity:

Position the fork so that the narrow edge of the tines is vertical.
This ensures that the liquid can run off easily.

4mm

L00-FTL5xxxx-06-05-xx-xx-001

L00-FTL5xxxx-11-05-xx-xx-001

Vertical from above Flush-mounted from the side

Endress+Hauser 21

Liquiphant M FTL50(H), FTL51(H)

With build-up on the tank walls:

* Ensure that there is sufficient distance between the build-up expected on the tank wall and the fork.

*

*

L00-FTL5xxxx-11-05-xx-xx-002

Vertical from above Protruding into the tank from the side

2

Mounting positions with low viscosity (up to 2000 mm

* Deburr the nozzle surfaces

/s):

*

Mounting in piping from 2"

Fluid velocities up to 5 m/s for viscosity 1 mm2/s and density 1 g/cm3.
(Check the function for other operating conditions.)

*

min. 25

(min. 1 in)

L00-FTL5xxxx-11-05-xx-en-003

L00-FTL5xxxx-11-05-xx-xx-004

22 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

Support the Liquiphant M FTL51(H)
in the event of high dynamic loads.

L00-FTL5xxxx-11-05-xx-xx-005

.. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..

...........................................

Ensure adequate space outside the tank

.. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .

...........................................

for mounting, electrical connection and
configuration.

L00-FTL5xxxx-11-05-xx-xx-006

Orientation FTL50(H) and FTL51(H) with short pipe (up to approx. 500 mm) – any position,

FTL51(H) with long pipe – vertical

Environment

Ambient temperature range Permitted ambient temperature Ta at the housing depending on the medium temperature Tp in the tank:

.. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .

.. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..

.. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .

.. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..

T

a

T

a

T

p

–50 °C

70 °C

50 °C

0°C

0°C 50°C

–50 °C

100 °C 150 °C

90 °C

*

T

p

L00-FTL5xxxx-05-05-xx-xx-001

* Additional temperature range for devices with a temperature spacer or flameproof bushing

Ambient temperature limits –50…+70 °C (function with restricted data)

Endress+Hauser 23

Storage temperature –50…+80 °C

*

p

e

bar

si)

T

p

°C

(°F)

64

(928)

–50

(–58)

150

(300)

0

(32)

–1

(–14.5)

100

(1450)

Climate class Climate protection to IEC 68, Part 2-38, Fig. 2a

Degree of protection • Polyester, steel and aluminium housings: IP66/IP67 to EN 60529

• Aluminium housing (EEx d, EEx de): IP66/IP68 to EN 60529 (1 m, 24 h)

• Compact housing:

– IP65 with valve connector Pg11/NPT ½

– IP66/68 with 5m cable tail

– IP66/68 with M12x1 connector (52010285) 316L (metal);

– IP69k with connector (52024216), elbowed / L= 5 m, without build-in LEDs

– IP69k with connector (52018763), elbowed / L= 5 m, with build-in LEDs

Vibration resistance To IEC 68, Part 2-6 (10…55 Hz, 0.15 mm, 100 cycles)

Electromagnetic compatibility Interference emission to EN 61326, Electrical Equipment Class B

Interference immunity to EN 61326; Annex A (Industrial) and NAMUR Recommendation NE 21 (EMC)

Liquiphant M FTL50(H), FTL51(H)

Medium conditions

Medium temperature range –50…+150 °C; for exceptions, see "Process connections"

Thermal shock Max. 120 °C/s

Medium pressure p

Test pressure pe = 64 bar:

e

(–58)

–50

p

e

bar

(p(psi)

100

(1450)

(928)

(–14.5)

64

–1

0

(32)

* Allowed pressure rating by selecting the "100 bar" option (see "Product structure" code 060)

Exceptions see "Process connections"

max. 100 bar (1.5 times the medium pressure p

); no function during test pressure

e

Burst pressure of diaphragm 200 bar

pe = 100 bar:
max. 150 bar (1.5 times the medium pressure p

); no function during test pressure

e

Burst pressure of diaphragm 400 bar

*

150

(300)

T

°C

(°F)

p

L00-FTL5xxxx-05-05-xx-xx-003

State of aggregation Liquid

24 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

Density 0.7 g/cm3 = delivery status

0.5 g/cm3* adjustable over switches

* Density settings for the compact housing on request

2

Viscosity Max. 10000 mm

/s

Solids content Max. ø5 mm

Mechanical construction

Design Summary of all electrical and mechanical versions

Plug-in electronic inserts to mount in the housing

FEL51*:
FEL52*:
FEL54:
FEL55:
FEL56:

L00-FTL5xxxx-03-05-xx-xx-000

* Electronics also available as compact housing. The electronics cannot be exchanged!

FEL58*:
FEL57:
FEL50A:

Two-wire AC connection
Three-wire DC connection PNP
Universal current connection, 2 relay outputs
Output 16/8 mA for separate switching unit
Output 0.6…1.0 / 2.2…2.8 mA for separate switching unit (NAMUR)
Output 2.2…3.5 / 0.6…1.0 mA for separate switching unit (NAMUR)
Output 150/50 Hz, PFM, for separate switching unit (Nivotester)
Digital communication PROFIBUS PA

Housing

L00-FTL5xxxx-03-05-xx-xx-019 L00-FTL5xxxx-03-05-xx-xx-001 L00-FTL5xxxx-03-05-xx-xx-002 L00-FTL5xxxx-03-05-xx-xx-003 L00-FTL5xxxx-03-05-xx-xx-004

Pipe housing
Compact (316L)

F16
Polyester (PBT)

F15
Steel (316L)

F17/F13
Aluminium
(also for EEx d),
coated

T13
Aluminium with separate
connection compartment
(also for EEx de and
EEx d), coated

Process connections

L00-FTL5xxxx-03-05-xx-xx-006 L00-FTL5xxxx-03-05-xx-xx-007 L00-FTL5xxxx-03-05-xx-xx-008 L00-FTL5 xxxx-03-05-xx-xx-009

G ¾, DIN ISO 228/I
R ¾, EN10226
NPT ¾, ANSI B 1.20.1
(AF 32)

G 1, DIN ISO 228/I
R 1, EN10226
NPT 1, ANSI B 1.20.1
(AF 41)

Diverse
hygienic and aseptic
connections

Flanges to DIN, ANSI, JIS
from DN 25 / 1"

Endress+Hauser 25

Liquiphant M FTL50(H), FTL51(H)

Dimensions in mm (1 mm = 0,0394 in)

Sensors

Compact,
with extension pipe up to 3 m (to 6 m on request)
or special length "L II" (see also page 30)

Bushings

Temperature spacer and flameproof bushing

Housing and sensor FTL50(H)

Compact housing

Compact Length L Length L II

L00-FTL5xxxx-03-05-xx-xx-018

pe = 64 bar 64 bar 64 bar

100 bar 100 bar

L00-FTL5xxxx-03-05-xx-xx-005

1. 2. 3.

40

30

1. 5 m cable

2. M12 connector

3. Pg11/NPT ½ connector

Polyester housing

232

166

ø40

32 AF

ø85 max. 76

199

133

ø40

max. 155

32 AF

*

141

206

*

L00-FTL5xxxx-06-05-xx-en-008

17.5

L00-FTL5xxxx-06-05-xx-xx-004

ø40

32 AF

max. 40.7

26 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

Steel housing

Aluminium housing

ø76 max. 64

max. 150

*

L00-FTL5xxxx-06-05-xx-xx-005

max. 65

ø80

max. 173

ø21.5

max. 60

*

10

L00-FTL5xxxx-06-05-xx-xx-006

~25

!

Aluminium housing

with separate

max. 65

max. 97

connection compartment

max. 190

*

L00-FTL5xxxx-06-05-xx-xx-007

* see "Process connections"

Note!
The switchpoints of the Liquiphant M are at other positions to those of the previous version Liquiphant II.

Bushings: temperature spacer, flameproof bushing

Temperature spacer

Provides sealed insulation
for the vessel and normal ambient
temperatures for the housing.

Flameproof bushing

Protects the housing from pressures
up to 100 bar if the sensor is damaged.
Provides sealed insulation
for the vessel and normal ambient
temperatures for the housing.

Vessel
insulation

additional length
140 mm

L00-FTL5xxxx-11-05-xx-en-000

Endress+Hauser 27

Process connections for FTL50(H) and FTL51(H)

Liquiphant M FTL50(H), FTL51(H)

Process connection Dimensions Accessories Pressure

Temperature

G ¾

DIN ISO 228/l
with defined

GQ2
GQ5

32 AF

66.5

max. 100 bar
max. 150 °C

50.5

thread start

With elastomer
flat seal to DIN 7603:
supplied

G ¾

DIN ISO 228/l
with defined
thread start

For flush-mounted
installation in
welding neck

GQ2
GQ5

32 AF

L00-FTL5xxxx-06-05-xx-en-001

66.5

50.5

L00-FTL5xxxx-06-05-xx-en-001

Welding neck

(with defined
thread start)
with silicone O-ring
Endress+Hauser
52001052

In conformity with
FDA*

max. 25 bar
max. 150 °C

max. 40 bar
max. 100 °C

See "Accessories"

G 1

DIN ISO 228/l

GR2
GR5

41 AF

69

50.5

max. 100 bar
max. 150 °C

With elastomer
flat seal to DIN 7603:
supplied

L00-FTL5xxxx-06-05-xx-en-002

G 1

DIN ISO 228/l
with defined
thread start

With seal surface
for flush-mounted
installation in
welding neck

GW2

41 AF

80

61.3

L00-FTL5xxxx-06-05-xx-en-003

Welding neck

(with defined
thread start)
with silicone O-ring
Endress+Hauser
52001051

In conformity with
FDA*

max. 25 bar
max. 150 °C

max. 40 bar
max. 100 °C

See "Accessories"

NPT ¾

ANSI B 1.20.1

GM2
GM5

32 AF

(66.5)

50.5

In conformity with
FDA*

max. 100 bar
max. 150 °C

or

R ¾

EN10226

NPT 1

ANSI B 1.20.1

GE2
GE5

GN2
GN5

41 AF

L00-FTL5xxxx-06-05-xx-en-004

(69)

50.5

In conformity with
FDA*

max. 100 bar
max. 150 °C

or

R 1

EN10226

Flanges

ANSI B 16.5
EN 1092-1
(DIN 2527 B)
JIS B2220

GF2
GF5

A##
B##
C##
F##
N##

L00-FTL5xxxx-06-05-xx-en-005

66.5

Seal
according to design
installed on site

In conformity with
FDA*

See nominal pressure
of flange, however
max. 100 bar
max. 150 °C

K##

L00-FTL5xxxx-06-05-xx-xx-008

* FDA approved materials according to 21 CFR Part 177.1550/2600

28 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

Process connection Dimensions Accessories Pressure

Temperature

Tri-Clamp

1 ½" = ø50.5 mm
2" = ø64.0 mm
ISO 2852

Threaded pipe joint

DN 32
DN 40
DN 50
DIN 11851

TC2
TE2

MA2
MC2
ME2

66.5

L00-FTL5xxxx-06-05-xx-xx-009

66.5

Clamping ring and
front seal
installed on site

In conformity with
FDA*

Sealing ring with collar,
installed on site

In conformity with
FDA*

max. 16 bar
max. 120 °C

max. 2 bar
max. 150 °C

DN 32, DN 40:
max. 40 bar to 100 °C
max. 25 bar to 140 °C

DN 50:
max. 25 bar

with screw cap

Flush-mounted for 1"
welding neck

Factory standard
Endress+Hauser with
silicone seal
and screw cap:
supplied

EE2

L00-FTL5xxxx-06-05-xx-xx-010

55.5

L00-FTL5xxxx-06-05-xx-xx-011

Welding neck

(fork can be
positioned)
Endress+Hauser
52001047

In conformity with
FDA*

max. 140 °C

max. 40 bar
max. 100 °C

max. 25 bar
max. 150 °C

See "Accessories"

Aseptic

DN 50
DIN 11864-1
Form A
for pipe DIN 11850

HE2

66.5

Sealing ring,
installed on site

In conformity with
FDA*

max. 25 bar
max. 140 °C

with screw cap

DRD

With clamped flange

SMS

2"
(DN 51)
with screw cap

Varivent

for piping

≥ DN 65
≥ O.D. 3"
≥ I.P.S. 3"

PE2

UE2

WE2

ø68

L00-FTL5xxxx-06-05-xx-xx-012

66.5

L00-FTL5xxxx-06-05-xx-xx-013

66.5

L00-FTL5xxxx-06-05-xx-xx-014

56.5

Welding flange with
PTFE flat seal
(fork can be
positioned)
Endress+Hauser
52002041

In conformity with
FDA*

See "Accessories"
(or installed on site)

Sealing ring,
installed on site

In conformity with
FDA*

Clamping ring and
O-ring seal,
installed on site

In conformity with
FDA*

max. 40 bar
max. 100 °C

max. 25 bar
max. 150 °C

max. 25 bar
max. 140 °C

See specification as per
Tuchenhagen VARIVENT­Inline housing but:

max. 25 bar
max. 150 °C

L00-FTL5xxxx-06-05-xx-xx-015

* FDA approved materials according to 21 CFR Part 177.1550/2600

Endress+Hauser 29

Sensor length L for FTL51 and FTL51H,
depending on process connection

Liquiphant M FTL50(H), FTL51(H)

!

Thread: G ¾

G 1

L

L00-FTL5xxxx-06-05-xx-xx-016

From seal surface of
thread adapter

ø21.5

Thread: NPT ¾

NPT 1
R ¾
R 1

L

L00-FTL5xxxx-06-05-xx-xx-017 L00-FTL5xxxx-06-05-xx-xx-018

From lower edge of
thread

Flanges and
flange-like process connections

L

Any length L:

148...3000 mm (6...115 in); special version (TSP) on request up to 6000 mm (235 in)

Note!
The switchpoints of the Liquiphant M are at other positions to those of the previous version Liquiphant II.

Special length "L II":
With vertical mounting from above the same switchpoint as for the Liquiphant II
FTL360, FTL365, FDL30, FDL35

"L II" depends on process connection:
115 mm for flanges and flange-like process connections

99 mm for threads NPT and R (BSPT)
118 mm for threads G 1 (BSP 1)
115 mm for threads G ¾ (BSP ¾)
104 mm for flush-mounted 1" (Endress+Hauser)

Weights See "Product structure"

Material –Wetted parts:

Process connection and extension pipe: AISI 316L (1.4435) or 2.4610 (AlloyC4)

Tuning fork: AISI 316L (1.4435) or 2.4610 (AlloyC4)
– Flat seal for process connection G ¾ or G 1: elastomer fibre, asbestos-free
– Polyester housing: PBT-FR

with PBT-FR cover or with PA12 cover with sight glass,

Cover seal: EPDM
– Steel housing: AISI 316L,

Cover seal: silicone
– Aluminium housing: EN-AC-AlSi10Mg, plastic-coated,

Cover seal: EPDM
– Compact housing: valve connector or M12 connector
– Cable gland: polyamide or brass, nickel-plated
– Temperature spacer: AISI 316L (1.4435)
– Flameproof bushing: AISI 316L (1.4435)

30 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

Process connections – Parallel thread G ¾, G 1 to DIN ISO 228/I with flat seal to DIN 7603

– Tapered thread R ¾, R 1 to EN10226
– Tapered thread ¾ -14 NPT, 1 - 11½ NPT to ANSI B 1.20.1
– Flush-mounted with welding neck to factory standard Endress+Hauser (G ¾, G 1)
– Flush-mounted with welding neck to factory standard Endress+Hauser (1"),

Sensor can be positioned
– Tri-Clamp 1½", 2" to ISO 2852
– Threaded pipe joint DN 32, 40, 50 to DIN 11851
– Aseptic connection DN 50 to DIN 11864-1 Form A for pipe DIN 11850
– SMS connection 2" (DN 51)
–DRD flange
– Varivent

®

DN 50 (50/40) to factory standard Tuchenhagen

– Flanges to EN/DIN from DN 25, for standards see "Product structure", to ANSI B 16.5 from 1",

to JIS B2220 (RF)

Human interface

Electronic inserts

With FEL51, FEL52, FEL54, FEL55:

• 2 switches for safety mode and density change,

• green LED to indicate operational status,

• red LED to indicate the switching status,

flashes in the event of corrosion damage

on sensoror if the electronics are defect

With FEL56:

• 2 switches for safety mode and density change,

• green LED flashes to indicate operational status,

• red LED to indicate the switching status,

flashes in the event of corrosion damage

on sensor or if the electronics are defect

With FEL57:

• 2 switches for density change and cyclical checking,

• green LED to indicate operational status,

• yellow LED to indicate the covered status,

flashes in the event of corrosion damage

on sensor or if the electronics are defect

With FEL58:

• 2 switches for safety mode and density change,

• green LED

– flashes quickly to indicate operational status,

– flashes slowly to indicate corrosion damage

at the sensor or if the electronics are defect,

• yellow LED to indicate the switching status,

Test key – breaks the cable connection

L1 N

12

Connecting terminal LEDs Switches

FEL51

U~

19...253V AC
50/60Hz

Max1

2

Min

I max : 350mA

>0,7

>0,5

L00-FTL5xxxx-03-05-xx-en-001

L00-FTL5xxxx-03-05-xx-xx-013

With FEL50A:

• 8 switches for configuring the device address,

• green LED to indicate operational status,

pulsing to indicate communication;

PA– PA+

FEL50A

Address

ON

OFF

12345678

SW
HW

• yellow LED to indicate the switching status,

flashes in the event of corrosion damage on sensor

or if the electronics are defect

Connecting terminal LEDs Switches

12

L00-FTL5xxxx-03-05-xx-en-002

Endress+Hauser 31

Compact housings Function test with test magnet

Versions AC, DC-PNP and NAMUR:

During the test, the current state of the electronic switch is reversed.

Performing the test

Hold the test magnet against the marking on the nameplate:

Liquiphant M FTL50(H), FTL51(H)

The switching status is changed.

Light signals

Versions AC and DC-PNP with valve connector or cable tail

gn gn

AC/DC NAMUR

rd

L00-FTL5xxxx-19-05-xx-xx-001

ye

L00-FTL5xxxx-07-05-xx-xx-005

Green light (gn) light up (AC/DC):

Liquiphant M is connected to the power supply and is operational.

Green light (gn) flashing (NAMUR):

Liquiphant M is connected to the power supply and is operational.

Red light (rd) lights up (AC/DC):

MAX application mode (overfill protection): sensor is immersed in liquid.
MIN application mode (dry running protection): sensor is not immersed in liquid.

Yellow light (ye) lights up (NAMUR):

MAX application mode (overfill protection): sensor is not immersed in liquid.
MIN application mode (dry running protection): sensor is immersed in liquid.

Red light (rd) flashing (AC/DC):

Liquiphant M has detected a fault.

32 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

rd

gn

ye

Version NAMUR and DC-PNP with M12x1 round connector 316L

ye

rd

gn

Green light (gn) lights up (DC-PNP):

Liquiphant M is connected to the power supply and is operational.

L00-FTL5xxxx-07-05-xx-xx-003

Green light (gn) flashing with 1 Hz (NAMUR):

Liquiphant M is connected to the power supply and is operational.

Yellow light (ye) lights up (DC-PNP):

Sensor is immersed in liquid.

Yellow light (ye) lights up (NAMUR):

MAX application mode (overfill protection): sensor is not immersed in liquid.
MIN application mode (dry running protection): sensor is immersed in liquid.

Red light (rd) flashing (DC-PNP):

Liquiphant M has detected a fault.

Green light (gn) flashing with 0.3 Hz (NAMUR):

Liquiphant M has detected a fault.

Endress+Hauser 33

Version DC-PNP with M12x1 round connector 316L

Liquiphant M FTL50(H), FTL51(H)

ye 1

ye 2

gn

Green light (gn) lights up:

Liquiphant M is connected to the power supply and is operational.

Yellow light (ye 1) lights up:

MAX application mode (overfill protection): sensor is not immersed in liquid.
MIN application mode (dry running protection): sensor is not immersed in liquid.

Yellow light (ye 2) lights up:

MAX application mode (overfill protection): sensor is immersed in liquid.
MIN application mode (dry running protection): sensor is immersed in liquid.

L00-FTL5xxxx-07-05-xx-xx-004

Green light (gn) lights up, both yellow lights (ye 1+2) do not light up:

Liquiphant M has detected a fault.

Operating concept Onsite configuration

34 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

+

Certificates and approvals

General approvals For Liquiphant M FTL50H, FTL51H the following approvals are available:

• EHEDG: Certification (from TNO, The Netherlands), Report No. V99.394

• 3A: 3A Certificate (USA), Authorization No. 459

!

#

Process connections Order Code

+

L00-FTL5xxxx-01-05-xx-xx-001

Flush-mounted G ¾, G1 (with welding neck) GQ2, GW2 X

Tri-Clamp 2" (special seal from Hyjoin Limited, UK) TE2 X

Threaded pipe joint MA2, MC2, ME2 X

Flush-mounted (fork can be positioned) EE2 X

Aseptic HE2 X

DRD PE2 X

SMS UE2 X

®

Varivent

Note!
For CIP (Clean in Place) and SIP (Sterilize in Place) processes the pressure and temperture specifications of the
process connections must be observed.

Warning!
To avoid risk of contamination, install according to the "Hygienic Equipment Design Criteria (HDC)" as stated
in the Subgroup Design Principles of the EHEDG, Doc. 8, July 1993. The flow of liquid during cleaning is
important and should be in compliance with HDC.

WE2 X

Other certificates See "Ordering information"

Combination of housings and electronic inserts

Based on the various certificates, permissible combinations of housings *) and electronic inserts are given in
the following table.
*) Abbreviations: Polyester = PBT, Steel 316L = St., Aluminium = Alu

Aluminium housing with separate connection compartment = Alu/sep

Certificate, applications Housing Electronic inserts

A Without any special certificate

(for non-hazardous area)

D Overfill protection to WHG (Germany) PBT, St., Alu, Alu/sep. FEL51/52/54,

B ATEX II 3G EEx nC IIC T6, WHG PBT, St., Alu, Alu/sep. FEL54

ATEX II 3G EEx nC IIC T6, WHG
ATEX II 3D T85°C

C ATEX II 3G EEx nA II T6, WHG PBT, St., Alu, Alu/sep. FEL51/52,

ATEX II 3G EEx nA II T6, WHG
ATEX II 3D T85°C

E ATEX II 1/2 G, EEx de, WHG Alu/sep. FEL51/52/54,

F ATEX II 1/2 G, EEx ia IIC T6, WHG PBT, St., Alu, Alu/sep. FEL55/56/57/58/50A

ATEX II 1/2 G, EEx ia IIC T6, WHG
ATEX II 1/2 D, T80°C

PBT, St., Alu, Alu/sep. FEL51/52/54,

FEL55/56/57/58/50A

FEL55/56/57/58/50A

St., Alu, Alu/sep. FEL54

FEL55/56/57/58/50A

St., Alu, Alu/sep. FEL51/52,

FEL55/56/57/58/50A

FEL55/56/57/58/50A

St., Alu, Alu/sep. FEL55/56/57/58/50A

Endress+Hauser 35

Liquiphant M FTL50(H), FTL51(H)

Certificate, applications Housing Electronic inserts

G ATEX II 1/2 G, EEx ia IIC T6 PBT, St., Alu, Alu/sep. FEL55/56/57/58/50A

ATEX II 1/2 G, EEx ia IIC T6
ATEX II 1/2 D, T80°C

H ATEX II 1G, EEx ia IIC T6 FEL55/56/57/58/50A

J ATEX II 1G, EEx ia IIC T6, WHG FEL55/56/57/58/50A

I ATEX II 1/2 G, EEx de Alu/sep. FEL51/52/54,

K ATEX II 1/2 G, EEx d IIC T6 Alu FEL51/52/54,

L ATEX II 1/2 G, EEx d IIC T6, WHG Alu FEL51/52/54,

P FM, IS, Cl. I, II, III, Div. 1, Gr. A-G PBT, St., Alu, Alu/sep.

Q FM, XP, Cl. I, II, III, Div. 1, Gr. A-G Alu

R FM, NI, Cl. I, Div. 2, Gr. A-D St., Alu, Alu/sep.

U CSA, General Purpose St., Alu, Alu/sep.

S CSA, IS, Cl. I, II, III, Div. 1, Gr. A-G PBT, St., Alu, Alu/sep.

T CSA, XP, Cl. I, II, III, Div. 1, Gr. A-G Alu

V TIIS Ex ia IIC T3 PBT, St., Alu FEL57

WTIIS Ex d IIB T3 Alu FEL52/54

Y Other certificate

(for non-hazardous area)

St., Alu, Alu/sep. FEL55/56/57/58/50A

FEL55/56/57/58/50A

FEL55/56/57/58/50A

FEL55/56/57/58/50A

FEL55/56/57/58

with NPT cable entry

with NPT cable entry

with NPT cable entry

PBT
with NPT cable entry

with NPT cable entry

PBT
with NPT cable entry

with NPT cable entry

with NPT cable entry

PBT, St., Alu, Alu/sep. FEL51/52/54,

FEL51/52/54,
FEL55/56/57/58

FEL51/52/54,
FEL55/56/57/58

FEL55/56/57/58

FEL51/52/54,
FEL55/56/57/58

FEL51/52,
FEL55/56/57/58

FEL55/56/57/58

FEL51/52/54,
FEL55/56/57/58

FEL55/56/57/58/50A

!

Note!
on polyester housing (PBT), electric connecting cables run in pipes:
Do not screw cable entries firmly to the piping. Use flexible connections (e.g. with armoured hose).
If the piping is used for earthing then ensure that there is a continuous electrical connection.

!

Note!
Despite the additional Dust-Ex-certificate, the FTL5x(H) is to be used as a liquid limit switch only.

36 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

!

Ordering information

Note!
This overview does not mark options wich are mutually exclusive.

Product structure Liquiphant M FTL50 FTL51

Design Basic weight

FTL50 Compact 0.6 kg

FTL51 With extension pipe 0.6 kg

10 Approval:

A Non-hazardous area

B ATEX II 3 G EEx nC II T6 Overfill protection to WHG (Germany)

ATEX II 3 D T 85 °C*

C ATEX II 3 G EEx nA II T6 Overfill protection to WHG (Germany)

ATEX II 3 D T 85 °C*

D Non-hazardous area Overfill protection to WHG (Germany)

E ATEX II 1/2 G EEx de IIC T6 Overfill protection to WHG (Germany)

F ATEX II 1/2 G EEx ia IIC T6 Overfill protection to WHG (Germany)

ATEX II 1/2 D T 80 °C*

G ATEX II 1/2 G EEx ia IIC T6

ATEX II 1/2 D T 80 °C*

H ATEX II 1 G EEx ia IIC T6

I ATEX II 1/2 G EEx de IIC T6

J ATEX II 1 G EEx ia IIC T6 Overfill protection to WHG (Germany)

K ATEX II 1/2 G EEx d IIC T6

L ATEX II 1/2 G EEx d IIC T6 Overfill protection to WHG (Germany)

P FM IS, Class I, II, III Division 1, Group A-G

Q FM XP, Class I, II, III Division 1, Group B-G, for E5 housing Group A-G

R FM NI, Class I Division 2, Group A-D

S CSA IS, Class I, II, III Division 1, Group A-G

T CSA XP, Class I, II, III Division 1, Group A-G

U CSA General Purpose

VTIIS Ex ia IIC T3

W TIIS Ex d IIB T3

XTIIS Ex ia IIC T6

7 TIIS Ex d IIC T3

8 TIIS Ex d IIC T6

Y Special version

*) not valid for PBT

20 Process Connection: Additional weight

Note!
For 100 bar process pressure, please select the appropriate option under "Additional option"

GQ2 G ¾ 316L Thread ISO 228

Installation > accessory: welding neck

GQ5 G ¾ AlloyC4 Thread ISO 228

GR2 G 1 316L Thread ISO 228 0.2 kg

GR5 G 1 AlloyC4 Thread ISO 228 0.2 kg

GW2 G 1 316L Thread ISO 228 0.2 kg

Installation > accessory: welding neck

GM2 NPT ¾ 316L Thread ANSI

GM5 NPT ¾ AlloyC4 Thread ANSI

GN2 NPT 1 316L Thread ANSI 0.2 kg

GN5 NPT 1 AlloyC4 Thread ANSI 0.2 kg

GE2 R ¾ 316L Thread EN10226

GE5 R ¾ AlloyC4 Thread EN10226

GF2 R 1 316L Thread EN10226 0.2 kg

GF5 R 1 AlloyC4 Thread EN10226 0.2 kg

BA2 DN32 PN6 A 316L Flange EN 1092-1

BB2 DN32 PN25/40 A 316L Flange EN 1092-1

BC2 DN40 PN6 A 316L Flange EN 1092-1

BD2 DN40 PN25/40 A 316L Flange EN 1092-1

BE2 DN50 PN6 A 316L Flange EN 1092-1

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

1.2 kg

2.0 kg

1.4 kg

2.4 kg

1.6 kg

Endress+Hauser 37

Liquiphant M FTL50(H), FTL51(H)

20 Process Connection: Additional weight

BG2 DN50 PN25/40 A 316L Flange EN 1092-1

BH2 DN65 PN6 A 316L Flange EN 1092-1

BJ2 DN50 PN100 A 316L (FTL51) Flange EN 1092-1

BK2 DN65 PN25/40 A 316L Flange EN 1092-1

BM2 DN80 PN10/16 A 316L Flange EN 1092-1

BN2 DN80 PN25/40 A 316L Flange EN 1092-1

BQ2 DN100 PN10/16 A 316L Flange EN 1092-1

BR2 DN100 PN25/40 A 316L Flange EN 1092-1

B12 DN80 PN100 A 316L (FTL51) Flange EN 1092-1

B82 DN25 PN25/40 A 316L Flange EN 1092-1

CA2 DN32 PN6 B1 316L Flange EN 1092-1

CA5 DN32 PN6 AlloyC4 >316L Flange EN 1092-1

CE2 DN50 PN6 B1 316L Flange EN 1092-1

CE5 DN50 PN6 AlloyC4 >316L Flange EN 1092-1

CG2 DN50 PN25/40 B1 316L Flange EN 1092-1

CG5 DN50 PN25/40 AlloyC4 >316L Flange EN 1092-1

CJ2 DN50 PN100 B2 316L (FTL51) Flange EN 1092-1

CN2 DN80 PN25/40 B1 316L Flange EN 1092-1

CN5 DN80 PN25/40 AlloyC4 >316L Flange EN 1092-1

CQ2 DN100 PN10/16 B1 316L Flange EN 1092-1

CQ5 DN100 PN10/16 AlloyC4 >316L Flange EN 1092-1

C12 DN80 PN100 B2 316L (FTL51) Flange EN 1092-1

C82 DN25 PN25/40 B1 316L Flange EN 1092-1

C85 DN25 PN25/40 AlloyC4 >316L Flange EN 1092-1

DG2 DN50 PN40 B1 316L Flange EN 1092-1

DN2 DN80 PN40 B1 316L Flange EN 1092-1

D82 DN25 PN40 B1 316L Flange EN 1092-1

FG2 DN50 PN40 C 316L Flange EN 1092-1

NG2 DN50 PN40 D 316L Flange EN 1092-1

AA2 1¼" 150 lbs RF 316/316L Flange ANSI B16.5 1.2 kg

AB2 1¼" 300 lbs RF 316/316L (FTL51) Flange ANSI B16.5 2.0 kg

AC2 1½" 150 lbs RF 316/316L Flange ANSI B16.5 1.5 kg

AD2 1½" 300 lbs RF 316/316L (FTL51) Flange ANSI B16.5 2.7 kg

AE2 2" 150 lbs RF 316/316L Flange ANSI B16.5 2.4 kg

AE5 2" 150 lbs RF AlloyC4 >316/316L Flange ANSI B16.5 2.4 kg

AF2 2" 300 lbs RF 316/316L Flange ANSI B16.5 3.2 kg

AG2 2" 600 lbs RF 316/316L (FTL51) Flange ANSI B16.5 4.2 kg

AJ2 2½" 300 lbs RF 316/316L (FTL51) Flange ANSI B16.5 4.8 kg

AL2 3" 150 lbs RF 316/316L Flange ANSI B16.5 4.9 kg

AM2 3" 300 lbs RF 316/316L (FTL51) Flange ANSI B16.5 6.8 kg

AN2 3" 600 lbs RF 316/316L (FTL51) Flange ANSI B16.5

AP2 4" 150 lbs RF 316/316L Flange ANSI B16.5 7.0 kg

AQ2 4" 300 lbs RF 316/316L (FTL51) Flange ANSI B16.5 11.5 kg

AR2 4" 600 lbs RF 316/316L (FTL51) Flange ANSI B16.5 17.3 kg

A82 1" 150 lbs RF 316/316L Flange ANSI B16.5 1.0 kg

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 C)

(DIN 2527)

(DIN 2527 C)

(DIN 2527)

(DIN 2527 C)

(DIN 2527)

(DIN 2527)

(DIN 2527 C)

(DIN 2527)

(DIN 2527 C)

(DIN 2527)

(DIN 2527)

(DIN 2527 C)

(DIN 2527)

(DIN 2526 D)

(DIN 2526 D)

(DIN 2526 D)

(DIN 2512 F)

(DIN2512 N)

3.2 kg

2.4 kg

4.3 kg

4.8 kg

5.9 kg

5.6 kg

7.5 kg

1.4 kg

1.1 kg

1.1 kg

1.5 kg

1.5 kg

2.9 kg

2.9 kg

5.2 kg

5.2 kg

5.3 kg

5.3 kg

1.3 kg

1.3 kg

2.6 kg

2.9 kg

38 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

20 Process Connection: Additional weight

KA2 10 K 25 RF 316L Flange JIS B2220

KC2 10 K 40 RF 316L Flange JIS B2220

KE2 10 K 50 RF 316L Flange JIS B2220 1.7 kg

KE5 10 K 50 RF AlloyC4 >316L Flange JIS B2220 1.7 kg

KL2 10 K 80 RF 316L Flange JIS B2220

KP2 10 K 100 RF 316L Flange JIS B2220

TC2 DN25-38 (1...1½") 316L ISO 2852 Tri-Clamp

TE2 DN40-51 (2") 316L ISO 2852 Tri-Clamp 0.1 kg

YY9 Special version

30 Probe Length; Type:

FTL50

AA Compact; Ra <3.2 μm/80 grit

IA Compact; temperature spacer 0.6 kg

QA Compact; pressure tight feed through 0.7 kg

FTL51

BB ....... mm; 316L** Ra <3.2 μm/80 grit

BE ....... mm; AlloyC4** Ra <3.2 μm/80 grit

CB ....... inch; 316L** Ra <3.2 μm/80 grit

CE ....... inch; AlloyC4** Ra <3.2 μm/80 grit 2.3 kg/100 in

DB Length: type II*; 316L Ra <3.2 μm/80 grit 0.1 kg

DE Length: type II*; AlloyC4 Ra <3.2 μm/80 grit 0.1 kg

JB ....... mm; 316L** + temperature spacer 0.9 kg/m

JE ....... mm; AlloyC4** + temperature spacer 0.9 kg/m

KB ....... inch; 316L** + temperature spacer 2.3 kg/100 in

KE ....... inch; AlloyC4** + temperature spacer 2.3 kg/100 in

LB Length: type II*; 316L + temperature spacer 0.1 kg

LE Length: type II*; AlloyC4 + temperature spacer 0.1 kg

RB ....... mm; 316L** + pressure tight feed through 0.9 kg/m

RE ....... mm; AlloyC4** + pressure tight feed through 0.9 kg/m

SB ....... inch; 316L** + pressure tight feed through 2.3 kg/100 in

SE ....... inch; AlloyC4** + pressure tight feed through 2.3 kg/100 in

TB Length: type II*; 316L + pressure tight feed through 0.1 kg

TE Length: type II*; AlloyC4 + pressure tight feed through 0.1 kg

YY Special version

+0.6 kg

+0.6 kg

+0.6 kg

+0.6 kg

+0.6 kg

+0.6 kg

+0.7 kg

+0.7 kg

+0.7 kg

+0.7 kg

+0.7 kg

+0.7 kg

*) Replacing instruments: when vertically mounting a Liquiphant M

FTL51 with length II, the switch point is at the same height as for the
Liquiphant II FTL360, FTL365, FDL30, FDL35

**) Order 3001...6000 mm (116...235 in) via yy

40 Electronics; Output:

A FEL50A PROFIBUS PA

1 FEL51* 2-wire, 19...253 V AC

2 FEL52* 3-wire PNP, 10... 55 V DC

4 FEL54 relay DPDT, 19...253 V AC, 19...55 V DC

5 FEL55 8/16 mA, 11... 36 V DC

6 FEL56 NAMUR (L-H signal)

7 FEL57 2-wire PFM

8 FEL58* NAMUR + test button (H-L signal)

9 Special version

*) Also available in compact housing

50 Housing; Cable Entry:

C3 Compact 316L IP66/68; cable 5 m

D3 Compact 316L IP65; plug Pg11 ISO 4400

Endress+Hauser 39

50 Housing; Cable Entry:

E3 Compact 316L NEMA4X; plug NPT ½ ISO 4400

N3 Compact 316L IP66/68; plug M12

E4 F16 Polyester NEMA4X; thread NPT ½

E5 F13/F17 Alu NEMA4X; thread NPT ¾ 0.5 kg

E6 F15 316L NEMA4X; thread NPT ½ 0.1 kg

E7 T13 Alu coated IP66; thread NPT ¾ 0.9 kg

separate connection compartment

F4 F16 Polyester IP66; thread G ½

F5 F13/F17 Alu IP66; thread G ½ 0.5 kg

F6 F15 316L IP66; thread G ½ 0.1 kg

F7 T13 Alu coated IP66; thread G ½ 0.9 kg

separate connection compartment

G4 F16 Polyester IP66; gland M20

G5 F13/F17 Alu IP66; gland M20 0.5 kg

G6 F15 316L IP66; gland M20 0.1 kg

G7 T13 Alu coated IP66; gland M20 0.9 kg

separate connection compartment (EEx d > thread M20)

N4 F16 Polyester IP66; plug M12

N5 F13/F17 Alu IP66; plug M12

N6 F15 316L IP66; plug M12

Y9 Special version

Liquiphant M FTL50(H), FTL51(H)

(EEx d > thread M20)

!

60 Additional Option:

A Basic version

C EN 10204 - 3.1 material (316L wetted parts)

Inspection certificate

N EN 10204 - 3.1 material, NACE MR0175 (316L wetted parts)

Inspection certificate

P 100 bar process pressure (FTL51)

R 100 bar process pressure, EN 10204 - 3.1 material,

NACE MR0175 (316L wetted parts)
Inspection certificate

S GL/ABS marine certificate (FTL51: max. 1600 mm)

Y Special version

FTL5# - Complete product designation

(FTL51)

Note!
The basic weight includes the compact sensor, thread adapter G ¾, electronic insert, polyester housing

40 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

Product structure Liquiphant M FTL50H FTL51H

Design Basic weight

FTL50H Compact 0.7 kg

FTL51H With extension pipe 0.7 kg

10 Approval:

A Non-hazardous area

B ATEX II 3 G EEx nC II T6 Overfill protection to WHG (Germany)

ATEX II 3 D T 85 °C*

C ATEX II 3 G EEx nA II T6 Overfill protection to WHG (Germany)

ATEX II 3 D T 85 °C*

D Non-hazardous area Overfill protection to WHG (Germany)

E ATEX II 1/2 G EEx de IIC T6 Overfill protection to WHG (Germany)

F ATEX II 1/2 G EEx ia IIC T6 Overfill protection to WHG (Germany)

ATEX II 1/2 D T 80 °C*

G ATEX II 1/2 G EEx ia IIC T6

ATEX II 1/2 D T 80 °C*

H ATEX II 1 G EEx ia IIC T6

I ATEX II 1/2 G EEx de IIC T6

J ATEX II 1 G EEx ia IIC T6 Overfill protection to WHG (Germany)

K ATEX II 1/2 G EEx d IIC T6

L ATEX II 1/2 G EEx d IIC T6 Overfill protection to WHG (Germany)

P FM IS, Class I, II, III Division 1, Group A-G

Q FM XP, Class I, II, III Division 1, Group B-G, for E5 housing Group A-G

R FM NI, Class I Division 2, Group A-D

S CSA IS, Class I, II, III Division 1, Group A-G

T CSA XP, Class I, II, III Division 1, Group A-G

U CSA General Purpose

VTIIS Ex ia IIC T3

W TIIS Ex d IIB T3

XTIIS Ex ia IIC T6

7 TIIS Ex d IIC T3

8 TIIS Ex d IIC T6

Y Special version

*) not valid for PBT

20 Process Connection: Additional weight

GQ2 G ¾ 316L (FTL50H) Thread ISO 228

Installation > accessory: welding neck

GW2 G 1 316L Thread ISO 228 0.2 kg

Installation > accessory: welding neck

BA2 DN32 PN6 A 316L Flange EN 1092-1

BB2 DN32 PN25/40 A 316L Flange EN 1092-1

BC2 DN40 PN6 A 316L Flange EN 1092-1

BD2 DN40 PN25/40 A 316L Flange EN 1092-1

BE2 DN50 PN6 A 316L Flange EN 1092-1

BG2 DN50 PN25/40 A 316L Flange EN 1092-1

BH2 DN65 PN6 A 316L Flange EN 1092-1

BK2 DN65 PN25/40 A 316L Flange EN 1092-1

BM2 DN80 PN10/16 A 316L Flange EN 1092-1

BN2 DN80 PN25/40 A 316L Flange EN 1092-1

BQ2 DN100 PN10/16 A 316L Flange EN 1092-1

BR2 DN100 PN25/40 A 316L Flange EN 1092-1

B82 DN25 PN25/40 A 316L Flange EN 1092-1

CG2 DN50 PN25/40 B1 316L Flange EN 1092-1

CN2 DN80 PN25/40 B1 316L Flange EN 1092-1

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 B)

(DIN 2527 C)

(DIN 2527 C)

1.2 kg

2.0 kg

1.4 kg

2.4 kg

1.6 kg

3.2 kg

2.4 kg

4.3 kg

4.8 kg

5.9 kg

5.6 kg

7.5 kg

1.4 kg

3.2 kg

5.9 kg

Endress+Hauser 41

Liquiphant M FTL50(H), FTL51(H)

20 Process Connection: Additional weight

CQ2 DN100 PN10/16 B1 316L Flange EN 1092-1

EE2 1" flush-mounted (52001047) 316L 0.3 kg

Installation > accessory: welding neck

HE2 DN50 Tube DIN 11850 316L DIN 11864-1 A 0.3 kg

AA2 1¼" 150 lbs RF 316/316L Flange ANSI B16.5 1.2 kg

AC2 1½" 150 lbs RF 316/316L Flange ANSI B16.5 1.5 kg

AE2 2" 150 lbs RF 316/316L Flange ANSI B16.5 2.4 kg

AF2 2" 300 lbs RF 316/316L Flange ANSI B16.5 3.2 kg

AJ2 2½" 300 lbs RF 316/316L (FTL51H) Flange ANSI B16.5 4.8 kg

AL2 3" 150 lbs RF 316/316L Flange ANSI B16.5 4.9 kg

AM2 3" 300 lbs RF 316/316L (FTL51H) Flange ANSI B16.5 6.8 kg

AP2 4" 150 lbs RF 316/316L Flange ANSI B16.5 7.0 kg

AQ2 4" 300 lbs RF 316/316L (FTL51H) Flange ANSI B16.5 11.5 kg

A82 1" 150 lbs RF 316/316L Flange ANSI B16.5 1.0 kg

KA2 10 K 25 RF 316L Flange JIS B2220

KC2 10 K 40 RF 316L Flange JIS B2220

KE2 10 K 50 RF 316L Flange JIS B2220 1.7 kg

KL2 10 K 80 RF 316L Flange JIS B2220

KP2 10 K 100 RF 316L Flange JIS B2220

MA2 DN32 PN25 316L DIN 11851 0.1 kg

MC2 DN40 PN25 316L DIN 11851 0.2 kg

ME2 DN50 PN25 316L DIN 11851 0.3 kg

PE2 DRD 65 mm 316L 0.3 kg

TC2 DN25-38 (1...1½") 316L ISO 2852 Tri-Clamp

TE2 DN40-51 (2") 316L ISO 2852 Tri-Clamp 0.1 kg

UE2 SMS 2" PN25 316L 0.2 kg

WE2 DN65-162 PN10 316L Varivent N tube 0.5 kg

YY9 Special version

(DIN 2527 C)

5.6 kg

30 Probe Length; Type:

FTL50H

AC Compact; Ra <1.5 μm/120 grit

AD Compact; Ra <0.3 μm/320 grit / A3

IC Compact; Ra <1.5 μm/120 grit

ID Compact; Ra <0.3 μm/320 grit / A3

QC Compact; Ra <1.5 μm/120 grit

QD Compact; Ra <0.3 μm/320 grit / A3

FTL51H

BC ....... mm; Ra <1.5 μm/120 grit 0.9 kg/m

BD ....... mm; Ra <0.3 μm/320 grit / A3 0.9 kg/m

CC ....... inch; Ra <1.5 μm/120 grit 2.3 kg/100 in

CD ....... inch; Ra <0.3 μm/320 grit / A3 2.3 kg/100 in

DC Length: type II*; Ra <1.5 μm/120 grit 0.1 kg

DD Length: type II*; Ra <0.3 μm/320 grit / A3 0.1 kg

JC ....... mm; Ra <1.5 μm/120 grit

JD ....... mm; Ra <0.3 μm/320 grit

KC ....... inch; Ra <1.5 μm/120 grit

KD ....... inch; Ra <0.3 μm/320 grit

LC Length: type II*; Ra <1.5 μm/120 grit

LD Length: type II*; Ra <0.3 μm/320 grit

RC ....... mm; Ra <1.5 μm/120 grit

RD ....... mm; Ra <0.3 μm/320 grit

SC ....... inch; Ra <1.5 μm/120 grit

SD ....... inch; Ra <0.3

+ temperature spacer

+ temperature spacer

+ pressure tight feed through

+ pressure tight feed through

+ temperature spacer

+ temperature spacer

+ temperature spacer

+ temperature spacer

+ temperature spacer

+ temperature spacer

+ pressure tight feed through

+ pressure tight feed through

+ pressure tight feed through

μm/320 grit

+ pressure tight feed through

0.6 kg

0.6 kg

0.7 kg

0.7 kg

0.9 kg/m
+0.6 kg

0.9 kg/m
+0.6 kg

2.3 kg/100 in
+0.6 kg

2.3 kg/100 in
+0.6 kg

0.1 kg

+0.6 kg

0.1 kg

+0.6 kg

0.9 kg/m
+0.7 kg

0.9 kg/m
+0.7 kg

2.3 kg/100 in
+0.7 kg

2.3 kg/100 in
+0.7 kg

42 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

30 Probe Length; Type:

TC Length: type II*; Ra <1.5 μm/120 grit

TD Length: type II*; Ra <0.3 μm/320 grit

YY Special version

*) Replacing instruments: when vertically mounting a Liquiphant M

FTL51H with length II, the switch point is at the same height as for the
Liquiphant II FTL360, FTL365, FDL30, FDL35

40 Electronics; Output:

A FEL50A PROFIBUS PA

1 FEL51* 2-wire, 19...253 V AC

2 FEL52* 3-wire PNP, 10... 55 V DC

4 FEL54 relay DPDT, 19...253 V AC, 19...55 V DC

5 FEL55 8/16 mA, 11... 36 V DC

6 FEL56 NAMUR (L-H signal)

7 FEL57 2-wire PFM

8 FEL58* NAMUR + test button (H-L signal)

9 Special version

*) Also available in compact housing

+ pressure tight feed through

+ pressure tight feed through

0.1 kg

+0.7 kg

0.1 kg

+0.7 kg

50 Housing; Cable Entry:

C3 Compact 316L IP66/68; cable 5 m

D3 Compact 316L IP65; plug Pg11 ISO 4400

E3 Compact 316L NEMA4X; plug NPT ½ ISO 4400

N3 Compact 316L IP66/68; plug M12

E4 F16 Polyester NEMA4X; thread NPT ½ –0.1 kg

E5 F13/F17 Alu NEMA4X; thread NPT ¾ 0.4 kg

E6 F15 316L NEMA4X; thread NPT ½

E7 T13 Alu coated IP66; thread NPT ¾ 0.8 kg

separate connection compartment

F4 F16 Polyester IP66; thread G ½ –0.1 kg

F5 F13/F17 Alu IP66; thread G ½ 0.4 kg

F6 F15 316L IP66; thread G ½

F7 T13 Alu coated IP66; thread G ½ 0.8 kg

separate connection compartment

G4 F16 Polyester IP66; gland M20 –0.1 kg

G5 F13/F17 Alu IP66; gland M20 0.4 kg

G6 F15 316L IP66; gland M20

G7 T13 Alu coated IP66; gland M20 0.8 kg

separate connection compartment (EEx d > thread M20)

N4 F16 Polyester IP66; plug M12

N5 F13/F17 Alu IP66; plug M12

N6 F15 316L IP66; plug M12

Y9 Special version

60 Additional Option:

A Basic version

B CoC, EN 10204 - 3.1 material (316L wetted parts)

Inspection certificate

C EN 10204 - 3.1 material (316L wetted parts)

Inspection certificate

S GL/ABS marine certificate (FTL51H: max. 1600 mm)

Y Special version

(EEx d > thread M20)

FTL5#H - Complete product designation

!

Note!
The basic weight includes the compact sensor, thread adapter G ¾, electronic insert, steel housing

Endress+Hauser 43

Accessories

Liquiphant M FTL50(H), FTL51(H)

Welding neck G ¾

Welding neck G 1

Order number: 52001052
with 3.1.B material certificate: 52011897
for flush-mounting
a Liquiphant FTL50 or FTL50H
with process connection GQ2

• With defined thread start *

• Sensor cannot be positioned

Material: corrosion-resistant steel

1.4435 (AISI 316L)

Weight: 0.13 kg

Seal: silicone O-ring
Order number: 52001387

FDA approved materials according to
21 CFR Part 177.1550/2600

Note!

!

Use only for FTL50/51 and FTL50H/51H!

Order number: 52001051
with 3.1.B material certificate: 52011896
for flush-mounting
a Liquiphant M
with process connection GW2

• With defined thread start *

• Sensor cannot be positioned

Material: corrosion-resistant steel

1.4435 (AISI 316L)

Weight: 0.19 kg

Seal: silicone O-ring
Order number: 52001386

FDA approved materials according to
21 CFR Part 177.1550/2600

ø41

ø32

max. 25 bar / max. 150 °C

max. 40 bar / max. 100 °C

26

21

G¾

ISO 228

max. 25 bar / max. 150 °C

max. 40 bar / max. 100 °C

29.6

24.6

G1

ISO 228

–0.4

ø55

L00-FTL5xxxx-06-05-xx-xx-019

–0.4

ø60

L00-FTL5xxxx-06-05-xx-xx-020

* The tolerance of the defined thread beginnings between welding boss and sensor amounts to ± 15°.

44 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

Welding neck G 1

Welding neck

Order number: 52001221
with 3.1.B material certificate: 52011898
for flush-mounting
a Liquiphant M
with process connection GW2

• Sensor can be positioned

Material (wetted):
corrosion-resistant steel

1.4435 (AISI 316L)

Weight: 0.43 kg

Seal: silicone moulded seal
Order number: 942816-0000

FDA approved materials according to
21 CFR Part 177.1550/2600

Order number: 52001047
with 3.1.B material certificate: 52006909
for flush-mounting
a Liquiphant FTL50H, FTL51H
with process connection EE2

• Sensor can be positioned

Material: corrosion-resistant steel

1.4435 (AISI 316L)

Weight: 0.15 kg

Seal on Liquiphant: silicone moulded seal
Order number: 942816-0000

FDA approved materials according to
21 CFR Part 177.1550/2600

max. 25 bar / max. 150 °C

max. 40 bar / max. 100 °C

26

–0.3

ø65

5

L00-FTL5xxxx-06-05-xx-xx-021

max. 25 bar / max. 150 °C

max. 40 bar / max. 100 °C

4.5

6

1

ø42.3

RD 52 x

~26

ø65

L00-FTL5xxxx-06-05-xx-xx-022

DRD welding flange

Order number: 52002041
with 3.1.B material certificate: 52011899
for flush-mounting
a Liquiphant FTL50H, FTL51H
with process connection PE2

• Sensor can be positioned

Material: corrosion-resistant steel

1.4435 (AISI 316L)

Weight: 0.9 kg

Seal: PTFE flat seal (FDA listed)
Order number: 916783-0000

FDA approved materials according to
21 CFR Part 177.1550/2600

ø105

M10

ø66

20

15

ø50

13

16

ø84

ø125

L00-FTL5xxxx-06-05-xx-xx-023

Endress+Hauser 45

Liquiphant M FTL50(H), FTL51(H)

Lap joint flange

Lap joint flanges

Order number: 918158-0000
with G 1 thread for mounting
a Liquiphant FTL50, FTL51
with process connection GR2

Pressure up to 40 bar

Material: corrosion-resistant steel

1.4301 (AISI 304)

Weight: 0.54 kg

with G 1 thread for mounting
a Liquiphant FTL50, FTL51
with process connection GR2

Material: corrosion-resistant steel

1.4571 (AISI 316Ti)

– Order number: 918143-0000

Flange DN50 PN40, EN 1092-1
Weight: 3.11 kg

– Order number: 918144-0000

Flange ANSI 2", 150 psi, RF
Weight: 2.38 kg

2

14

92

92

G1 12

L00-FTL5xxxx-06-05-xx-xx-024

L00-FTL5xxxx-03-05-xx-xx-015

Sliding sleeves for unpressurised operation

for continuous adjustment of the switch point
of a Liquiphant M FTL51

Material: corrosion-resistant steel

41 AF

19

FTL51

1.4435 (AISI 316L)

Weight for G 1, NPT 1: 0.21 kg
Weight for G 1½, NPT 1½: 0.54 kg

18

G1A

(1 NPT)

19

22

G1½A

(1½ NPT)

Thread Standard Material Order number Approval

G 1 DIN ISO 228/I 1.4435 (AISI 316L) 52003978

G 1 DIN ISO 228/I 1.4435 (AISI 316L) 52011888 3.1 material certificate

NPT 1 ANSI B 1.20.1 1.4435 (AISI 316L) 52003979

NPT 1 ANSI B 1.20.1 1.4435 (AISI 316L) 52011889 3.1 material certificate

G 1½ DIN ISO 228/I 1.4435 (AISI 316L) 52003980

G 1½ DIN ISO 228/I 1.4435 (AISI 316L) 52011890 3.1 material certificate

NPT 1½ ANSI B 1.20.1 1.4435 (AISI 316L) 52003981

NPT 1½ ANSI B 1.20.1 1.4435 (AISI 316L) 52011891 3.1 material certificate

M6 (3x)

55 AF

M6 (3x)

p=

e

0 bar

L00-FTL5xxxx-06-05-xx-en-006

46 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

G 1AA

(1 NPT)

G 1½AA

(1½ NPT)

FTL51

18

ø60

2

~70

22

ø60

2

~72

AF

AF

High pressure sliding sleeves

For continuous adjustment of the switch point
of a Liquiphant M FTL51.

Material: corrosion-resistant steel

1.4435 (AISI 316L) or AlloyC4

Weight for G 1, NPT 1: 1.13 kg
Weight for G 1½, NPT 1½: 1.32 kg

Seal package made of graphite

~70

2

~72

2

ø60

G1

(1 NPT)

ø60

G1½

(1½ NPT)

5050AF

18

5050AF

22

Thread Standard Material Order number Approval

G 1 DIN ISO 228/1 1.4435 (AISI 316L) 52003663

G 1 DIN ISO 228/1 1.4435 (AISI 316L) 52011880 3.1 material certificate

G 1 DIN ISO 228/1 AlloyC4 52003664

NPT 1 ANSI B 1.20.1 1.4435 (AISI 316L) 52003667

NPT 1 ANSI B 1.20.1 1.4435 (AISI 316L) 52011881 3.1 material certificate

NPT 1 ANSI B 1.20.1 AlloyC4 52003668

G 1½ DIN ISO 228/1 1.4435 (AISI 316L) 52003665

G 1½ DIN ISO 228/1 1.4435 (AISI 316L) 52011882 3.1 material certificate

G 1½ DIN ISO 228/1 AlloyC4 52003666

NPT 1½ ANSI B 1.20.1 1.4435 (AISI 316L) 52003669

NPT 1½ ANSI B 1.20.1 1.4435 (AISI 316L) 52011883 3.1 material certificate

NPT 1½ ANSI B 1.20.1 AlloyC4 52003670

FTL51

L00-FTL5xxxx-06-05-xx-en-007

p

e

bar

(psi)

100

(1450)

(1160)

(928)

Liquiphant M FTL51*

Liquiphant S

80

64

Liquiphant M

T

p

–60

(–76)

–50

(–58)

–1

(–14.5)

(32)

0

150

(300)

230

(440)

280

(540)

°C

(°F)

L00-FTL5xxxx-05-05-xx-xx-002

* FTL51 with high pressure sliding sleeves (1450 psi). See "Additional Option" Page 37 ff. option "P" or "R".

Endress+Hauser 47

Liquiphant M FTL50(H), FTL51(H)

Transparent cover

Cover with sight glass

Circular connector

Order number: 943461-0001
for polyester housing

Material: PA 12

Weight: 0.04 kg

for steel housing

Material: AISI 316L

Weight: 0.16 kg

– Order number: 943301-1000

With glass sight glass

– Order number: 52001403

With PC sight glass
(Not for CSA, General Purpose)

Order number: 52010285

4x0,34 M12 socket

Cable: PVC (grey) 5 m length

Body: PUR (blue)

Coupling nut: Cu Sn/Ni

Protection: IP67

Temperature range: –25...+70 °C

L00-FTL5xxxx-03-05-xx-xx-016

L00-FTL5xxxx-03-05-xx-xx-017

27.5

min. 40

L00-FTL20Hxx-07-05-xx-xx-004

Order number: 52024216

4x0,34 M12 socket

Cable: PVC (orange) 5 m length

Body: PVC (orange)

Coupling nut: 316L

Protection: IP69K (fully locked)

Temperature range: –25...+70 °C

Order number: 52018763

4x0,34 M12 socket with integrated LEDs

Cable: PVC (orange) 5 m length

Body: PVC (transparent)

Coupling nut: 316L

Protection: IP69K (fully locked)

Temperature range: –25...+70 °C

27.5

min. 40

L00-FTL20Hxx-07-05-xx-xx-005

27.5

min. 40

L00-FTL20Hxx-07-05-xx-xx-005

48 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

Supplementary Documentation

!

Operating Instructions Electronic insert FEL50A for Liquiphant M/S

Note!
This supplementary documentation can be found on our product pages on www.endress.com

PROFIBUS PA
BA141F/00/en

Liquiphant M FTL50, FTL51
KA143F/00/a6

Liquiphant M FTL50(H), FTL51(H)
KA144F/00/a6

Liquiphant M FTL51C
KA162F/00/a6

Liquiphant M FTL50-####### # 7 #, FTL51-####### # 7 #
KA163F/00/a6

Liquiphant M FTL50H-######## 7 #, FTL51H-######## 7 #
KA164F/00/a6

Liquiphant M FTL51C-######## 7 ##
KA165F/00/a6

Liquiphant M FTL5#-# ### ## # #3 #, FTL5#H-# ### ## # #3 #
KA220F/00/a6

Technical Information Nivotester FTL370/372, switching units in Racksyst design

for Liquiphant M with electronic insert FEL57
TI198F/00/en

Nivotester FTL320, switching unit in Minipac design
for Liquiphant M with electronic insert FEL57
TI203F/00/en

General instructions for electromagnetic compatibility
(Test procedure, installation recommendation)
TI241F/00/en

Isolating amplifier FXN421/422, switching units for top-hat rail mounting
for Liquiphant M with electronic insert FEL56, FEL58
TI332F/00/en

Liquiphant M FTL51C, wetted parts with highly corrosion-resistant coating
made of ECTFE, PFA or enamel
TI347F/00/en

Isolating amplifier FTL325P, 1 or 3-channel switching units for top-hat rail mounting
for Liquiphant M/S with electronic insert FEL57
TI350F/00/en

Isolating amplifier FTL325N, 1 or 3-channel switching units for top-hat rail mounting
for Liquiphant M/S with electronic insert FEL56, FEL58
TI353F/00/en

Liquiphant S FTL70/71, for medium temperatures up to 280 °C
TI354F/00/en

Isolating amplifier FTL375P, 1 to 3-channel switching units for top-hat rail mounting
for Liquiphant M/S with electronic insert FEL57
TI360F/00/en

Isolating amplifier FTL375N, 1 to 3-channel switching units for top-hat rail mounting
for Liquiphant M/S with electronic insert FEL56, FEL58
TI361F/00/en

Endress+Hauser 49

Functional Safety (SIL) Liquiphant M/S + Nivotester FTL325P

SD111F/00/en

Liquiphant M/S + Nivotester FTL375P
SD113F/00/en

Liquiphant M/S with FEL58 + Nivotester FTL325N (MAX)
SD161F/00/en

Liquiphant M/S with electronic insert FEL54 (MAX)
SD162F/00/en

Liquiphant M/S with electronic insert FEL52 (MAX)
SD163F/00/en

Liquiphant M/S with electronic insert FEL51 (MAX)
SD164F/00/en

Liquiphant M/S with electronic insert FEL55 (MAX)
SD167F/00/en

Liquiphant M/S with FEL56 + Nivotester FTL325N (MAX)
SD168F/00/en

Liquiphant M/S with FEL58 + Nivotester FTL325N (MIN)
SD170F/00/en

Liquiphant M/S with electronic insert FEL51 (MIN)
SD185F/00/en

Liquiphant M/S with electronic insert FEL52 (MIN)
SD186F/00/en

Liquiphant M/S with electronic insert FEL54 (MIN)
SD187F/00/en

Liquiphant M/S with FEL56 + Nivotester FTL325N (MIN)
SD188F/00/en

Liquiphant M FTL50(H), FTL51(H)

Safety Instructions (ATEX) 40II 1/2 G, EEx d IIC/B

(KEMA 99 ATEX 1157)
XA031F/00/a3

40II 1/2 G, EEx ia/ib IIC/B
(KEMA 99 ATEX 0523)
XA063F/00/a3

40II 1 G, EEx ia IIC/B
(KEMA 99 ATEX 5172 X)
XA064F/00/a3

40II 1/2 G, EEx de IIC/B
(KEMA 00 ATEX 2035)
XA108F/00/a3

40II 3 G, EEx nA/nC II
(EG 01 007-a)
XA182F/00/a3

System Information Liquiphant M

SI040F/00/en

50 Endress+Hauser

Liquiphant M FTL50(H), FTL51(H)

Endress+Hauser 51

Instruments International

Endress+Hauser
Instruments International AG
Kaegenstrasse 2
4153 Reinach
Switzerland

Tel. [phone]
Fax [phone]
www.endress.com
[email protected]

TI328F/00/en/07.07
SL/FM+SGML6.0 ProMoDo