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Measuring principle
Vibration Liquids
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Characteristic / Application
Modular housing concept
High process temperatures up to 280°C
wide range of process connections
Analogue and bus interfaces
Extensive certificate range (e.g. Ex,WHG)
compact, e.g. pipes
Dual Sealing / Second line of defense -
Specialities
Foam detection
Detect a density change
second line of defense -
Supply / Communication
PROFIBUS PA
19…253V AC
10…55V DC-PNP
19…253V AC bzw 10…55V DC
8/16mA, 11…36V DC
NAMUR
PFM -
Ambient temperature
-50 °C…+70 °C
(-58 °F…+158 °F) -
Process temperature
-60 °C…+280 °C
(-76 °F…+540 °F)
(300°C / 572°F, 50h cumulated) -
Process pressure / max. overpressure limit
Vacuum…100 bar
(Vacuum…1450 bar) -
Min. density of medium
0.5g/cm³ (0.4g/cm³ optional)
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Main wetted parts
316L / Alloy
PFA and Enamel on request -
Process connection
Thread:
G3/4A, G1A, R3/4″, R1, NPT3/4, NPT1
Flange:
DIN DN25…DN100,
ASME 1″…4″,
JIS 25A…100A -
Sensor length
Length 130mm (5.12″) (Liquiphant II)
148mm…3000mm / 6000mm optional
(5.83″…118″ / 236″ optional) -
Communication
PROFIBUS PA
19…253V AC
10…55V DC-PNP
19…253V AC bzw 10…55V DC
8/16mA, 11…36V DC
NAMUR
PFM -
Certificates / Approvals
ATEX, FM, CSA C/US, IEC Ex, TIIS, INMETRO, NEPSI
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Safety approvals
SIL
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Design approvals
EN 10204-3.1
NACE MR0175, MR0103
ASME B31.3
AD2000 -
Marine approval
GL/ ABS
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Options
Heavy duty stainless steel housing mainly for the oil and gas industry
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Components
FTL325P/FTL375P Interface PFM
FTL325N/FTL375N Interface NAMUR
Field of application
Liquiphant FTL71 is a point level switch with extension tube for use in hazardous areas with all international certificates. FTL71 is especially designed for applications with high process temperatures up to 280°C and can be used up to SIL2, in homogeneous redundancy up to SIL3. An integrated second line of defense offers the highest degree of safety. Reliable measurement values, not affected by: changing media properties, flow, turbulences, gas bubbles, foam, vibrations or build-up.
Point level switch for all liquids.Process connections: Threads and flangesTemperature: -60 to +280°C (-76 to +540°F)Pressure: -1 to +100bar (-14.5 to +1,450psi)Sensor material: 316L, Alloy (PFA and Enamel on request)International explosion protection certificates, overfill protection WHG, SIL, marine approvals
Benefits
Use in safety systems requiring functional safety to SIL2 in accordance with IEC 61508/IEC 61511-1 With welded gas-tight feed-through maximum safety in the event of damaged sensor Wide variety of electronics, e.g. NAMUR, relay, thyristor, PFM signal output: the right connection for every process control systemLarge number of process connections to choose from: universal usageNo calibration: quick, low-cost start-upNo mechanically moving parts: no maintenance, no wear, long operating life. Monitoring of fork for damage: guaranteed functionFDA approved materials (PFA Edlon)