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SITRANS LR100
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SITRANS LR100 is a 2-wire radar sensor using W-band FMCW technology for continuous level measurement of liquids and slurries up to 8 m. It features a compact, chemically resistant design with Bluetooth support for fast setup in tight spaces.
Key Features
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Fast and convenient configuration via Bluetooth using the SITRANS mobile IQ app on smartphones
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Fully sealed PVDF housing for exceptional chemical resistance and long maintenance-free operation
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W-band FMCW radar technology with narrow beam for high accuracy in confined or obstructed spaces
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Non-contact measurement through plastic tank lids, no need for direct media exposure
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Outdoor installation approved, no sealed tank required
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Compact design suitable for space-constrained mounting locations
Typical Applications
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Liquid level measurement in open or closed tanks
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Sludge level monitoring in wastewater treatment
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Chemical storage applications requiring corrosion resistance and simple installation
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Through-the-lid measurement on plastic tanks without structural modification
| Category | Specification |
| Mode of operation | |
| Measuring principle | W band FMCW radar |
| Measuring range | 0 … 8 m (0 … 26 ft) |
| Frequency | 80 GHz nominal |
| Beam angle | 8° |
| Power Supply | |
| Voltage | 12 … 35 V DC |
| Current | 4 … 20 mA |
| Accuracy | ± 5 mm |
| Rated operating conditions | |
| Vessel pressure | -1 … +3 bar (14.50 … 43.51 psi g) |
| Ambient temperature | -40 … +60 °C (-40 … +140 °F) |
| Process temperature | -40 … +60 °C (-40 … +140 °F) |
| Storage temperature | -40 … +80 °C (-40 … +176 °F) |
| Design | |
| Weight | 0.5 kg (1.1 lb), plus 0.1 kg/m (0.2 lb/ft) cable length |
| Material (enclosure) | PVDF |
| Process connection | 1-½” NPT, 1-½” BSPT, or 1-½” BSPP |
| Degree of protection | IP66/IP68 |
| Cable connection | • 8 m (26 ft) long, 2 conductor, twisted with shield 18 AWG, PVC jacket • 1″ NPT or 1″ BSPT threaded connection |
| Certificates and approvals | |
| General | Ordinary locations, CE,CFMUS, CCSAUS, RCM, EAC |
| Radio | CE, FCC, IC, Anatel, ICASA, NCC, KC, CITC, RCM, WPC, Telec, NBTC, MCMC |
| Canadian Registration Number (CRN) | • British Columbia 0F22218.51
• Alberta 0F20596.2 • Saskatchewan 0F2002.3 • Manitoba 0F7032.4 • Ontario 0F22218.5 • Quebec 0F05183.6 • New Brunswick 0F1490.07 • Nova Scotia 0F1490.08 • Prince Edward Island 0F1490.09 • Newfoundland and Labrador 0F1490.0 • Yukon 0F1490.0Y • Northwest Territories 0F1490.0T • Nunavut 0F1490.0N |
| Programming | |
| SITRANS mobile IQ App | SITRANS mobile IQ is a Bluetooth app that provides an intuitive interface to quickly configure, set up and monitor SITRANS LR100 series. More info: siemens.com/mobileIQ |
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