LVL-M4-A

Pepperl+Fuchs LVL-M4-A Vibration Limit Switch Compact Version.

Technical specifications

• Function principle: point level detection, maximum or minimum detection for liquids
• Measuring method: The change in vibration frequency causes the device to switch.
• Construction type: compact device
• Safety Integrity Level (SIL): SIL 3
• Rated voltage: electronic insert FEL61: 19 ... 253 V AC, 50/60 Hz; electronic insert FEL62: 10 V DC ... 55 V DC; electronic insert FEL64: 19 V AC ... 253 V AC50/60 Hz / 19 V DC ... 55 V DC; electronic insert FEL64DC: 9 V DC ... 20 V DC; electronic insert FEL68: switch amplifier acc. to IEC 60947-5-6 (NAMUR)
• Current consumption: electronic insert FEL61: ≤ 3.8 mA; electronic insert FEL62: ≤ 10 mA, without load
• Power consumption: electronic insert FEL61: ≤ 2 VA; electronic insert FEL62: ≤ 0.5 W; electronic insert FEL64: ≤ 25 VA/< 1.3 W; electronic insert FEL64DC: < 1.0 W; electronic insert FEL68: acc. to IEC 60947-5-6 (NAMUR)
• Interface type: Bluetooth® , optional
• Detection range: max. 25 m
• Communication: encrypted
• Switching point: see section switch point
• Measured variable: limit level (limit value)
• Measuring range: depends on installation location and the tube extension; maxmum sensor length : 6 m
• Output type: electronic insert FEL61: 2-wire with test button; electronic insert FEL62: 3-wire PNP with test button; electronic insert FEL64: relay DPDT with test button; electronic insert FEL64DC: relay DPDT with contact and test button; electronic insert FEL68: 2-wire NAMUR with test button
• Switch behaviour: switch-over for minimum/maximum residual current safety on electronic insert; MAX = maximum safety:; The output switches to the power fail response when the fork is covered.; for use with overspill protection for example; MIN = minimum safety:; The output switches to the power fail response when the fork is exposed.; for use with dry running protection for example
• Communication: connection for LED module VU120 and Bluetooth module VU121 , optional; Bluetooth wireless technology , optional
• Medium density: adjustment on the electronic insert > 0,5 g/cm3 or > 0,7 g/cm3 (other on request)
• Maximum measured error: max. ± 1 mm
• Hysteresis: typ. 2.5 mm
• Medium temperature: -50 ... 150 °C (-58 ... 302 °F)
• Medium pressure: pe = 0 ... 100 bar (0 ... 1450.4 psi) over the entire temperature range , exceptions see process connections
• State of aggregation: liquid
• Density: min. 0.5 g/cm3 , optional 0.4 g/cm3
• Viscosity: max. 10000 mm2/s (max. 10000 cSt)
• Ambient temperature: -60 ... 70 °C (-76 ... 158 °F); For further information see technical information (TI).
• Connection: gland M20; thread M20 , G1/2 , NPT1/2 , NPT3/4; plug M12
• Material: see technical information (TI)
• Process connection: cylindrical threads G3/4, G1 acc. to DIN ISO 228 G for installing in weld-in adapter; cylindrical threads G3/4, G1 acc. to DIN ISO 228 G with flat seal; conical threads NPT3/4, NPT1 acc. to ANSI B 1.20.3; conical threads R3/4, R1 acc. to EN 10226; flanges RF, RJF, FF from 1 inch acc. to ASME B16.5; flanges form A, B1, C, D, E from DN25 acc. to EN 1092-1; flanges RF from 10K 25A acc. to JIS B2220; Tri-Clamp from DN25 acc. to ISO 2852; For further information see technical information (TI).