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  6. LTC51

LTC51 Guided Level Radar

Key Benefits at a Glance

  • Premium device for level measurement in liquids
  • Measuring range up to 45 m (148 foot)
  • Process connection from 3/4 inch thread or flange
  • Temperature range up to 200 °C (392 °F)
  • Pressure range up to 40 bar (600 psi)
  • Up to SIL 3 acc. to IEC/EN 61508

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Product photo: Guided Level Radar LTC51
Product photo: Guided Level Radar LTC51
Product Compliance: EU - Ü
Approval
Functional Safety: Safety Integrity Level - 3
Product Compliance: Europe – CE
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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DatasheetFunctionClassificationInformative LiteratureProduct DocumentationDesign / SimulationApprovalsRelated Products

Technical data of LTC51

Measuring methodThe device is a measuring system that functions according to the time-of-flight method. The distance from the reference point (process connection of the measuring device) to the product surface is measured.
Construction typedevice with rod probe
device with coax probe
device with rope probe
SeriesLTC51
Safety Integrity Level (SIL)SIL 3
Rated voltageUr11.5 ... 35 V DC, 2-wire
10.4 ... 48 V DC, 4-wire
90 ... 253 V AC, 50/60 Hz
Measured variabledistance between reference point and product surface
Measuring rangerod probe: 4 m/10 m (13 ft/33 ft) (for divisible/indivisible rod probes)
coax probe: 6 m (20 ft)
rope probe: 45 m (148 ft)
Output signal4 ... 20 mA
2 x 4 ... 20 mA
Communication4 ... 20 mA HART (standard)
PROFIBUS PA (option)
Electromagnetic compatibility
Directive 2014/30/EUEN 61326-1:2006 , EN 61326-2-3:2006
Low voltage
Directive 2014/35/EUEN 61010-1:2010
Degree of protectionIEC 60529:2001
Accuracydigital:
- measuring range up to 15 m (49 feet): ±2 mm (0.08 inch)
- measuring range > 15 m (49 feet): ±10 mm (0.39 inch)
analog: 0.02 %
sum of non-linearity, non-repeatability and hysteresis included in the maximum measured error
Process conditions
Process temperature-40 ... 200 °C (-40 ... 392 °F)
Process pressure (static pressure)-1 ... 40 bar (-14.5 ... 580.2 psi)
Dielectric constantrod probe: DC ≥ 1.6
coax probe: DC ≥ 1.4
rope probe: DC ≥ 1.6
Ambient temperature-40 ... 80 °C (-40 ... 176 °F)
Degree of protectionIP68, NEMA 6P (24 hours in water 1.83 m (6 ft) deep)
IP66, NEMA 4X
Connectiongland M20
thread M20, G1/2, NPT1/2
device plug M12, 7/8 in
Materialmaterials in contact with process :
rod probe, coax probe: 1.4404/316L
rope probe: 1.4401/316
process connections: 1.4404/316L, 2.4602/Alloy C22
process membran, seal: Viton, EPDM, Kalrez, gas-tight feed through as option
Dimensionssee technical information (TI)
Process connectionthreads: from 3/4 in
flanges: DIN EN from DN40, ANSI from 1-1/2 in, JIS from DN40
EU-type examination certificatesee instruction manuals
Directive conformity
Directive 2014/34/EUEN 60079-0:2012+A11:2013 , EN 60079-1:2007 , EN 60079-11:2012 , EN 60079-15:2010 , EN 60079-26:2007 , EN 60079-31:2009
IECEx approvalsee instruction manuals
Display elementswithout display
display SD02 4-line , optional
Usevia communicator
via pushbuttons
Overspill protectionsee approval (ZE)
Telecommunicationsradio license FCC
Supplementary documentationtechnical information (TI)
manuals, brief instructions (BA, KA)
instruction manuals
approval (ZE)
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com.
Designationsee technical information (TI)
General Notes
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