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Vibration Limit Switch LVL-M2H

Vibration Limit Switch LVL-M2H
Vibration Limit Switch LVL-M2H

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артикул: 81969
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компанией на Ваш выбор

  • Limit switch in hygienic version for liquids
  • Large selection of process connections: universal use
  • Wide variety of electronic modules (e. g., relay, thyristor signal output): the right connection for every process control system
  • No calibration: quick and low-cost start up
  • No mechanically moving parts: maintenance-free, no wear, long operating life
  • Monitoring of the vibrating fork for damage: guaranteed function
  • PROFIBUS PA protocol: commissioning and maintenance quick and easy
  • Process connections acc. to EHEDG
  • Up to SIL 2 acc. to IEC 61508
Параметр Значение
Общие характеристики
Артикул 81969
Материал wetted parts: - process connection and extension tube: 1.4435/316L - vibration fork: 1.4435/316L - flat seal for process connection G2* or G3*: elastomer fibre, asbestos-free housings: - polyester housing: PBT-FR with PBT-FR cover or with PA12 cover with sight glass, cover seal: EPDM - stainless steel housing: 1.4435/316L, cover seal: silicone - aluminum housing: EN-AC-AlSi10Mg, plastic-coated, cover seal: EPDM - compact housing with valve connector or M12 connector: 1.4435/316L cable gland: polyamide or brass, nickel-plated temperature spacer: 1.4435/316L flameproof bushing: 1.4435/316L
Control elements electronic insert FEL50A (PA): 8 switches for device address setting electronic inserts FEL51 (AC), FEL52 (E5), FEL54 (WA), FEL55 (SI), FEL56 (N1): two switches for fail-safe mode and density change electronic insert FEL58 (N2): two switches for fail-safe mode and density change and one test button interrupts lead
Ambient temperature -50 ... 70 °C (-58 ... 158 °F) , function with reduced data values see section ambient temperature
Storage temperature -50 ... 80 °C (-58 ... 176 °F)
Degree of protection polyester, steel, and aluminum housing: IP66/IP67 compact housing: - IP65 with valve connector PG11 or 1/2NPT - IP66/IP68 with M12 x 1 connector without LEDs (1.4435/316L) - IP69K with M12 x 1 connector with LEDs (1.4435/316L)
Connection electronic inserts: cross section max. 2.5 mm , lace in end splice in acc. with DIN 46228 ground lead in housing: cross section max. 2.5 mm external equipotential bonding: cross section 4 mm
Mass 700 g , basic weight: compact sensor, electronic insert, stainless steel housing, process connection G2*, additional weight is dependent on extension tube, housing and process connection process connections: - A31 1000 g, A41 1200 g, A51 1500 g, A6* 2400 g, A72 4800 g, A81 4900 g, A82 6800 g, A91 7000 g, A92 11.5 kg - D75 3200 g, D95 5900 g, DA3 5600 g, D7A 300 g, D7D 300 g - F45 1400 g, F51 1200 g, F55 2000 g, F61 1400 g, F65 2400 g, F71 1600 g, F75 3200 g, F81 2400 g, F85 4300 g, F93 4800 g, F95 5900 g, FA3 5600 g, FA5 7500 g - G3E 200 g - J13 no information, J16 no information, J17 1700 g, J19 no information, J1A no information, J1C 1700 g - R*R no information - S13 300 g, S61 200 g, SV1 no information - T51 no information, T61 100 g extension tube, tempeprature spacers, flameproof bushings: - B* 900 g/m, C* 2300 g/100 inch - D* 100 g - J* 900 g/m and 600 g, K* 2300 g/100 inch and 600 g - L* 700 g - R* 900 g/m and 700 g, S* 2300 g/100 inch and 700 g - T* 800 g
Rated voltage electronic insert FEL50A (PA): 9 ... 32 V DC electronic insert FEL51 (AC): 253 V AC, 50/60 Hz electronic insert FEL52 (E5): 10 ... 55 V DC electronic insert FEL54 (WA): 19 ... 253 V AC, 50/60 Hz or 19 ... 55 V DC electronic insert FEL55 (SI): 11 ... 36 V DC, PLC electronic insert FEL56 (N1), FEL58 (N2): isolating amplifier acc. to EN 60947-5-6 (NAMUR)
Power consumption electronic insert FEL52 (E5): max. 0.83 W electronic insert FEL54 (WA): max. 1.3 W
Switching point see section switch point
Electromagnetic compatibility NE 21
Construction type device with extension tube
Measurement range depends on mounting point and pipe extension up to 3000 mm , larger sizes on request
Reference operating conditions ambient temperature: 23 °C (73.4 °F), medium temperature: 23 °C (73.4 °F), product density: 1 g/cm (water), viscosity: 1 mm /s, medium pressure p : 0 bar, sensor mounting: vertical from above, density switch: to > 0.7 g/cm
Maximum measured error max. ± 1 mm, specified by mounting position
Vibration resistance 10 ... 50 Hz, 0.15 mm, 100 cycles
Dimensions housing: diameter max. 85 mm, height max. 173 mm temperature separator, flameproof bushing: additional length L 140 mm process connection: length L 55.5 ... 80 mm extension: any length L from 148 ... 3000 mm, larger sizes on request extension: length type II, for vertical installation from above same switching point as Vibracon LVL1, LVL2 vibration fork: width 17.5 mm, fork width 10 mm, length 25 mm
Process connection - cylindrical thread G3/4A, G1A to DIN ISO 228/1 with flat seal to DIN 7603 - conical thread R3/4, R1 to DIN 2999, part 1 - flush-mounted with welding sleeve to factory standard (G3/4A, G1A) - flush-mounted with welding neck to factory standard (1 inch), sensor can be positioned - Triclamp 1-1/2 inch, 2 inch to ISO 2852 - threaded pipe joint DN32, DN40, DN50 to DIN 1185 - aseptic connection DN50 to DIN 11864-1 form A for pipe DIN 11850 - SMS connection 2 inch (DN51) - DRD flange, 65 mm - Varivent DN50 (50/40) to factory standard Tuchenhagen - flanges to EN 1092-1 from DN25, to ANSI B 16.5 from 1 inch, to JIS B 2238 (RF) from DN25 For further information see type code.
CSA approval see control drawings (ZD)
Hysteresis approx. 2 mm
Measuring method The forks of the sensors vibrate at their intrinsic frequency. This frequency is reduced when covered with liquid. The change in frequency then activates the limit switch.
EU-type examination certificate see instruction manuals (SI)
IECEx approval see instruction manuals (SI)
Supplementary information EC-Type Examination Certificate, Statement of Conformity, Declaration of Conformity, Attestation of Conformity and instructions have to be observed where applicable. For information see www.pepperl-fuchs.com.
Designation see technical information (TI)
FM approval see control drawings (ZD)
Display elements electronic inserts: - electronic inserts FEL50 A (PA), FEL58 (N2): green LED, yellow LED - electronic inserts FEL51 (AC), FEL52 (E5), FEL54 (WA), FEL55 (SI), FEL56 (N1): green LED, red LED compact housings: compact housing with valve connector - electronic version FEL51 (AC), FEL52 (E5): green LED, red LED - electronic version FEL58 (N2): green LED, yellow LED compact housing with M12 x 1 round connector without LEDs - electronic version FEL52 (E5): green LED, yellow LED, red LED - electronic version FEL58 (N2): green LED, yellow LED compact housing with M12 x 1 round connector with LEDs - electronic version FEL52 (E5): green LED, two yellow LEDs
Current consumption electronic insert FEL52 (E5): max. 15 mA
Surge protection electronic insert FEL51 (AC), electronic insert FEL52 (E5), electronic insert FEL54 (WA), electronic insert FEL55 (SI): overvoltage category III
Installation position with short pipe (up to 500 mm (19.7 inch)) any position, with long pipe vertical
Switching delay when fork is covered: approx. 0.5 s, when fork is exposed: approx. 1.0 s (other switching times on request) additionally configurable for PROFIBUS PA (electronic insert FEL50A (PA)): 0.5 ... 60 s
Directive 73/23/EEC EN 61010-1
Directive 89/336/EEC EN 61326 If the fork tines are joined together on account of build-up, the useful signal is attenuated to such an extent that the original EMC values can no longer be completely observed (EN 61000-4-3 electromagnetic fields, EN 61000-4-6 HF coupling).
Measured variable limit level (limit value)
Climate class DIN EN 60068-2-38/IEC 68-2-38
Non-repeatability 0.1 mm
Influence of medium temperature max. +1.4 ... -2.8 mm (-40 ... 150 °C (-40 ... 302 °F))
Influence of medium pressure max. 0 ... -2.5 mm (-1 ... 64 bar)
Medium temperature -50 ... 150 °C (-58 ... 302 °F) , exceptions see process connections
State of aggregation liquid
Density min. 0.5 g/cm (compact housing 0.7 g/cm ), other density settings on request
Viscosity max. 10000 mm /s (max. 10000 cSt)
Solid contents < ∅5 mm
Surface quality R < 1.5 µm/120 grit: length, spacer, bushings *C R < 0.3 µm/320 grit: length, spacer, bushings *D
Function test compact housing: function test with test magnet electronic versions FEL51 (AC), FEL52 (E5) and FEL58 (N2): During the test, the current state of the electronic switch is reversed.
Overspill protection see approval (ZE)
Supplementary documentation technical information (TI) manuals, brief instructions (BA, KA) instruction manuals (SI) control drawings (ZD)
Function principle limit detection Maximum or minimum detection in tanks or pipelines containing all types of liquids including use in explosion hazardous areas. Particularly suited to very aggressive liquids thanks to high degree of corrosion protection.
Medium pressure p = -1 ... 64 bar (-14.5 ... 928.3 psi) over the entire temperature range , exceptions see process connections
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 When switching on the power supply the output assumes the alarm signal. After max. 2 s it assumes the correct switching mode.
Medium density adjustment on the electronic insert > 0,5 g/cm or > 0,7 g/cm (other on request)
Influence of medium density max. +4.8 ... -3.5 mm (0.5 ... 1.5 g/cm )
Test pressure max. 100 bar (1.5 times the medium pressure p ), no function during test pressure, burst pressure of diaphragm 200 bar
Thermal shock resistance max. 120 °C/s (max. 120 K/s)
SIL classification up to SIL2 acc. to IEC 61508

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