Output Signal; Ex Connection Data; Environment; Ambient Temperature Range - Endress+Hauser Liquiphant FTL51B Operating Instructions Manual

Liquiphant FTL51B
Endress+Hauser
14.2.2

Output signal

Switch output
Preset switching times can be ordered. The following ranges can be ordered for point level
switches without communication (AC two-wire, relays, DC-PNP, PFM, NAMUR):
• 0.5 seconds when the fork is covered and 1.0 seconds when it is uncovered (factory
setting)
• 0.25 seconds when the fork is covered and 0.25 seconds when it is uncovered (fastest
setting)
• 1.5 seconds when the fork is covered and 1.5 seconds when it is uncovered
• 5 seconds when the fork is covered and 5 seconds when it is uncovered
COM interface
For connecting to modules VU120 or VU121 (no modifying effect)
Bluetooth® wireless technology (optional)
The device has a Bluetooth® wireless technology interface. Device data and diagnostic data
can be read out using the free "SmartBlue" app.
14.2.3

Ex connection data

See safety instructions (XA): All data relating to explosion protection are provided in
separate Ex documentation and are available from the Downloads Area of the
Endress+Hauser-website. The Ex documentation is supplied as standard with all Ex
devices.
14.3

Environment

14.3.1

Ambient temperature range

–40 to +70 °C (–40 to +158 °F)
WARNING
L
Permitted connection voltage exceeded!
‣
For electrical safety reasons, the maximum connection voltage for all electronic inserts
at ambient temperatures below –40 °C (–40 °F) is limited to a maximum of 35 V DC.
Optional
–60 °C (–76 °F) or –52 °C (–62 °F)
In the hazardous area, the permitted ambient temperature can be limited depending on
the zones and gas groups. Pay attention to the information in the Ex documentation (XA).
The minimum permitted ambient temperature of the plastic housing is limited to
–20 °C (–4 °F); "indoor use" applies in North America.
Technical data
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