Technical Data; Input; Measured Variable; Measuring Range - Endress+Hauser Liquiphant FTL51B Operating Instructions Manual

Liquiphant FTL51B
Endress+Hauser
14

Technical data

14.1

Input

14.1.1

Measured variable

Level (point level), MAX or MIN safety
14.1.2

Measuring range

Depends on the installation location and the pipe extension ordered
Maximum sensor length 6 m (20 ft)
14.2

Output

14.2.1

Output and input variants

Electronic inserts
2-wire AC (FEL61)
• Two-wire AC version
• Switches the load directly into the power supply circuit via an electronic switch.
3-wire DC-PNP (FEL62)
• Three-wire DC version
• Switches the load via the transistor (PNP) and separate connection, e. g. in conjunction
with programmable logical controllers (PLC)
• Ambient temperature –60 °C (–76 °F), optionally available to order
Low-temperature electronic inserts are marked LT
Universal current connection, relay output (FEL64)
• Switches the loads via 2 potential-free changeover contacts
• Ambient temperature –60 °C (–76 °F), optionally available to order
Low-temperature electronic inserts are marked LT
Direct current connection, relay output (FEL64DC)
• Switches the load via 2 potential-free changeover contacts
• Ambient temperature –60 °C (–76 °F), optionally available to order
Low-temperature electronic inserts are marked LT
PFM output (FEL67)
• For separate switching device (Nivotester FTL325P, FTL375P)
• PFM signal transmission; current pulses are superimposed on the power supply along
the two-wire cabling
• Ambient temperature –50 °C (–58 °F), optionally available to order
The low-temperature electronic inserts are marked LT
2-wire NAMUR > 2.2 mA/< 1.0 mA (FEL68)
• For separate switching device, e. g. Nivotester FTL325N
• Signal transmission H-L edge 2.2 to 3.8/0.4 to 1.0 mA as per IEC 60917-5-6 (NAMUR)
on two-wire cable
• Ambient temperature –50 °C (–58 °F), optionally available to order
Low-temperature electronic inserts are marked LT
2-wire density (FEL60D) for density measurement
Connection to Density Computer FML621
For more information, see the Technical Information for density measuring
technology.
Technical data
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