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Level probe LGC

LGC
  • Hydrostatic pressure sensor for level measuring of water
  • Measuring ranges: 0 bar ... 0.1 bar to 0 bar ... 20 bar
  • High-precision and long-term stability ceramic measuring cell
  • High mechanical resistance to overload and aggressive media
  • Permanent hermetically sealed level probe
  • Electronics comprising 4 mA ... 20 mA output signal and integrated overvoltage protection
  • Simultaneous level and temperature measuring by optional integrated temperature probe Pt100
  • KTW and NSF drinking water approval

Please note: All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH or Pepperl+Fuchs AG, also apply to Pepperl+Fuchs SE.

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Extracto de la hoja de datos: Información técnica del  LGC

General specifications
Measuring methodLevel control with ceramic measuring cell (dry measuring cell). The pressure acts directly on the rugged ceramic membrane of the LGC level probe and causes it to move by about max. 0.005 mm.
The effects of air pressure on the liquid surface are transferred via a pressure compensating tube through the extension cable to the rear of the ceramic membrane and compensated. Pressure-dependent changes in capacitance caused by membrane movement are measured at the electrodes of the ceramic carrier. The electronics convert the movement into a pressure-proportional signal which is linear to the medium level.
Equipment architectureThe measuring system consists of a LGC level probe and a SMART transmitter power supply
(e. g. KFD2-STC4-Ex1) with a supply voltage between 10 ... 30 V DC.
Construction typedevice with rod probe
Supply
Rated voltageLGC: 10 ... 30 V DC, Ex nA and Ex ia: 10 ... 30 V DC
Pt100 (optional): 10 ... 30 V DC, Ex nA: 10 ... 30 V DC
temperature transmitter (optional): 8 ... 35 V DC
Current consumptionLGC: max. ≤ 22.5 mA, min. ≥ 3.5 mA
Pt100 (optional): ≤ 0.6 mA
temperature transmitter (optional): Pt100 via temperature transmitter ≤ 0.6 mA
Reverse polarity protectionReverse voltage protection is integrated in LGC level probe and in the temperature transmitter LGC-Z13 changing the polarities has no impact on operation.
Residual rippleLGC: 4 ... 20 mA for hydrostatic pressure measured value, two-wire
Pt100 (optional): temperature-dependent resistance of Pt100
temperature transmitter (optional): 4 ... 20 mA for temperature measured value, two-wire
Input
Input signalLGC: change in capacitance
Pt100 (optional): change in resistance
temperature transmitter (optional): Pt100 resistance signal, 4-wire
Measured variableLGC: hydrostatic pressure of a liquid
Pt100 (optional): temperature of a liquid
temperature transmitter (optional): temperature
Measurement rangeLGC:
- nine fixed pressure measuring ranges in bar, see ordering information
- customer-specific measuring ranges, factory-calibrated
Pt100 (optional): temperature measurement from -10 ... 70 °C (263 ... 343 K)
Output
Output signalLGC: 4 ... 20 mA for hydrostatic pressure measured value, two-wire
Pt100 (optional): temperature-dependent resistance of Pt100
temperature transmitter (optional): 4 ... 20 mA for temperature measured value, two-wire
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EUEN 61326-1:2013 , EN 61326-2-3:2013
Conformity
Electromagnetic compatibilityNE 21
Degree of protectionIEC 60529:2001
Measurement accuracy
Reference operating conditionsLGC, Pt100 (optional): acc. to DIN EN 60770, Tamb = 25 °C (296 K)
temperature transmitter (optional): calibration temperature 23 °C ± 5 K (296 K ± 5 K)
AccuracyLGC: non-linearity including hysteresis and non-repeatability as per DIN EN 60770: ± 0.2 % of upper range value (URV)
Pt100 (optional): max. ± 0.7 K (class B to DIN EN 60751)
temperature transmitter (optional): ± 0.2 K, with Pt100: max. ± 0.9 K
Long-term driftLGC, Pt100 (optional): ± 0.1 % of upper range value (URL) per year
temperature transmitter (optional): ± 0.1 K per year
Influence of medium temperature- thermal change in zero signal and output span for typical temperature range 0 ... 30 °C (273 ... 303 K):
± 0.4 % (± 0.5 %)* of the measuring span
- thermal change in zero signal and output span for the total medium temperature range -10 ... 70 °C (263 ... 343 K): ± 1.0 % (± 1.5 %)* of the measuring span (Pt100)
- temperature coefficient (TK) in zero signal and output span: 0.15 %/10 K (0.3 %/10 K)* of the measuring span (Pt100 and temperature transmitter)
*specifications for sensors 0.1 bar and 0.6 bar
Rise timeLGC: 80 ms, Pt100 (optional): 160 s
Warm-up timeLGC, Pt100 (optional): 20 ms, temperature transmitter (optional): 4 s
Adjustment timeLGC: 150 ms, Pt100 (optional): 300 s
Operating conditions
Installation conditions
Installation positionvertical from above
Process conditions
Medium temperatureLGC, Pt100 (optional):
-10 ... 70 °C (263 ... 343 K), for Ex devices see safety information
temperature transmitter (optional):
-40 ... 85 °C (233 ... 358 K) = ambient temperature, install temperature transmitter outside medium
Medium temperature limitsLGC, Pt100 (optional): -20 ... 70 °C (253 ... 343 K)
You may operate the LGC in this temperature range. The specification can then be exceeded, e.g. measuring accuracy, see also DIN 16086.
Ambient conditions
Ambient temperatureLGC, Pt100 (optional): -10 ... 70 °C (263 ... 343 K) = medium temperature
temperature transmitter (optional): -40 ... 85 °C (233 ... 358 K)
Storage temperatureLGC, Pt100 (optional): -40 ... 80 °C (233 ... 353 K)
temperature transmitter (optional): -40 ... 100 °C (233 ... 373 K)
Mechanical specifications
Degree of protectionLGC, Pt100 (optional): IP68, permanently hermetically sealed, optional terminal box IP66/IP67
temperature transmitter (optional): IP00, moisture condensation permissible, when mounted in the optional terminal boxes IP66/IP67
Connection3 terminals in terminal housing as standard
4 terminals in block, accessories LGC-Z15 for conductor cross section 0.08 ... 2.5 mm2
Materiallevel probe LGC: 1.4435/316L
process ceramic: Al2O3 aluminum oxide ceramic
seal (internal): EPDM or Viton
protective cap: PE-HD (high-density polyethylene)
terminal box LGC-Z11: PC (polycarbonate)
temperature transmitter LGC-Z13: housing PC (polycarbonate)
extension cable PE: insulation PE (polyethylene), copper wires, twisted
extension cable FEP: insulation FEP (fluorinated ethylene propylene), copper wires, twisted
CableLGC:
- commercially available instrument cable
- terminals, terminal housing LGC: 0.08 ... 2.5 mm2
Pt100 (optional):
- If the Pt100 signal is directly connected to a display and/or evaluation unit, we recommend the use of a shielded cable.
temperature transmitter (optional):
- connection transmitter: max. 1.75 mm2
extension cable:
- total outer diameter: 8.0 mm ± 0.25 mm (0.315 inch ± 0.0098 inch)
- LGC: 3 x 0.227 mm2 and pressure compensation tube with PTFE filter
- Pt100 (optional): 7 x 0.227 mm2 and pressure compensation tube with PTFE filter
- pressure compensation tube with PTFE filter: outer diameter Ø2.5 mm (0.098 inch), internal diameter Ø1.5 mm (0.059 inch)
Masslevel probe LGC: 290 g
terminal box LGC-Z11: 235 g
temperature transmitter LGC-Z13: 40 g
extension cable PE: 52 g/m
extension cable FEP: 108 g/m
suspension clamp LGC-Z10: 170 g
extension cable mounting screw LGC-Z14: 770 g
extension cable mounting screw LGC-Z16: 724 g
Dimensionslevel probe LGC: Ø22 x 240 mm (Ø0.9 x 9.5 inch)
terminal housing LGC-Z11: 120 x 80 x 55 mm (4.7 x 3.15 x 2.2 inch)
temperature transmitter LGC-Z13: Ø44 x 21 mm (1.7 x 0.8 inch)
extension cable: 10 m (33 ft), 20 m (66 ft) or any length, can be cropped
- max. free suspended length (mechanical stability under load): 1000 m (3294 ft)
- max. length for non-Ex and EEx nA IIC T6, see section load
- max. length for EEx ia IIC T6: see related safety information (SI)
Data for application in connection with hazardous areas
EC-Type Examination CertificateTÜV 01 ATEX 1749
Group, category, type of protection, temperature classEx-Hexagon II 2G Ex ia IIC T6 Gb
Statement of conformityPF 16 CERT 1658 X
Group, category, type of protection, temperature classEx-Hexagon II 3G Ex nA IIC T6 Gc
Directive conformity
Directive 2014/34/EUEN 60079-0:2012 , EN 60079-11:2007 , EN 60079-15:2010
Certificates and approvals
Drinking water approvalKTW certificate and NSF approval
Accessories
Optional accessoriesLGC-Z10 mounting clamp, 1.4435/316L
LGC-Z11, terminal box (IP65/IP67), PC
LGC-Z12, additional weight 300 g, 1.4435/316L
LGC-Z13, temperature transmitter, 2-wire, -20 ... 80 °C
LGC-Z14, cable mounting screw G with cylindrical threading G1-1/2A, 1.4301/304
LGC-Z15, terminal block with 4 terminals
LGC-Z16, cable mounting screw N with tapered thread NPT1-1/2, 1.4301/304

Classifications

SystemClasscode
ECLASS 13.027200516
ECLASS 12.027200516
ECLASS 11.027200516
ECLASS 10.0.127200516
ECLASS 9.027200516
ECLASS 8.027200516
ECLASS 5.127200516
ETIM 9.0EC001447
ETIM 8.0EC001447
ETIM 7.0EC001447
ETIM 6.0EC001447
ETIM 5.0EC001447
UNSPSC 12.141111950

Details: LGC

Informative Literature: LGC

Seleccionar idioma:
LiteratureIdiomaTipo de archivoTamaño
Product information Level probe LGCENGPDF93 KB

Product Documentation: LGC

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Safety and Security DocumentationIdiomaTipo de archivoTamaño
SD126O, Instruction manual LGC / SD126O, Betriebsanleitung LGCALLPDF136 KB
SI131O-A, Instruction manual LGC / SI131O-A, Betriebsanleitung LGCALLPDF930 KB
SI132O-A, Instruction manual LGC / SI132O-A, Betriebsanleitung LGCALLPDF260 KB
Manuals
Manual LGCENGPDF904 KB

Approvals: LGC

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CertificatesNúmero de CertificadoIdiomaTipo de archivoTamaño
CSA Control DrawingZD064O-AALLPDF50 KB
Canada CSACoC 212978ALLPDF251 KB
Europe Pepperl+FuchsSD1260ALLPDF32 KB
FM Control DrawingZD063O-AALLPDF62 KB
USA FMCoC 3012697ALLPDF81 KB
Control Drawings
Control drawing CSA / Control drawing CSA   ALLPDF15 KB
ZD063O, Control drawing FM, LGC   ENGPDF160 KB
ZD064O, Control drawing CSA, LGC   ENGPDF132 KB
Contamination Declaration
Contamination declaration / Kontaminationserklärung   ALLPDF137 KB
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