Liquiphant FTL81 is a point level switch for use in hazardous areas with all international certificates. FailSafe overfill prevention in applications with functional safety up to SIL3 with one device. Reliable measurement values, not affected by: changing media properties, flow, turbulences, gas bubbles, foam, vibrations or build-up.
- Use in safety systems requiring functional safety to SIL3 in accordance with IEC 61508 Ed.2.0/ IEC 61511-1/ISA 84-1 and DIN EN ISO 13849
- Proof test: proof testing interval up to 12 years, Slave devices tested at the press of a button
- Permanent self-monitoring/internal redundancy
- 4-20mA interface (acc. to NAMUR NE 06/NE 43): easy integration via the switching unit (Nivotester FailSafe FTL825) with a two-channel output (safety contacts) and locking function or direct integration into a safety PLC
- No adjustment: quick, low-cost startup
- No mechanically moving parts: no maintenance, no wear, long operating life
- Monitoring of fork for damage, corrosion, build-up and mechanical blocking
Point level switch for liquids up to SIL3.
- Process connections: Threads and flanges
- Temperature: -60 to +280°C (-76 to +540°F)
- Pressure: -1 to +100bar (-14.5 to +1,450psi)
- Sensor length: Extension pipe up to 3m (9.8ft)
- Sensor material: 316L, Alloy C
- International explosion protection certificates, overfill prevention WHG, SIL, marine approvals
Characteristic / Application
Reliable point level switch with extension pipe for MIN and MAX safety applications up to SIL3.
Dual Sealing / Second line of defenseModular housing concept
Specialities
Outstanding features:
– permanent LIVE signal
monitors function safety– failsafe design and
– high availability of the measuring values
Supply / Communication
2-wire 4…20 mA
Ambient temperature
-60°C…+70°C
(-76°F…+160°F)Process temperature
-60°C…+280°C
(-76°F…+540°F)Process pressure absolute / max. overpressure limit
Vacuum…100 bar
(1450 psi)Min. density of medium
Density from 0.4 g/cm3
(0.4 SGU)Main wetted parts
316L
Alloy C
Process connection
Flange:
DN25…DN100,
ASME 1″…4″,
JIS 10K…20K
Thread:
G3/4, G1, R3/4,
R1, MNPT3/4, MNPT1Sensor length
Extension pipe up to 3 m (9.8 ft)
Communication
2-wire 4…20 mA
Certificates / Approvals
ATEX, FM, CSA, CSA C/US, IEC Ex, NEPSI
Safety approvals
Overfill prevention WHG
Leakage Detection
SIL3
Design approvals
EN 10204-3.1
NACE MR0175, MR0103
ASME B31.3
AD2000
Marine approval
GL/ ABS/ LR/ BV/ DNV
Options
PWIS free
Pressure tight feed through
Weather protection
Components
Nivotester FTL825, Transmitter
