(1) Instrument Overview

The SITRANS LR500 series is a radar level meter operating on 80GHz FMCW continuous frequency modulation principle, capable of continuously detecting the levels of liquids, solids, slurries, and other materials, with a maximum range of up to 120 m (393 ft).

(2) Product Features

• Continuous measurement, maximum range up to 120 m (393 ft)

• Easy installation and simple debugging

• Debugging can be done locally via button presses, or remote debugging via mobile IQ (Bluetooth) or SIMATIC PDM

• Compatible with HART 7

• Local display with backlight and can show echo curves

• Intelligent process signal processing technology with unique near-range echo suppression

• 1 mm accuracy, compliant with IEC 60770-1

• Complies with API 2350 American Petroleum Institute specifications

• Automatic false echo suppression effectively suppresses fixed interference

• Low power consumption design, low carbon and environmentally friendly

• For measuring toxic and hazardous materials, optional secondary sealing is available for enhanced safety

• Complies with NAMUR NE107

• Equipped with 100,000 data points for intelligent data analysis

(3) Main Technical Parameters

Measurement principle: radar level measurement

Frequency: W band (80 GHz FMCW)

Measurement range: 0-120m

Output: 4-20MA

Display (local): graphical HMI in-place LCD display with NE107 diagnostic information, echo curve display, and backlight adjustment

Maximum measurement error: 1 mm (0.039 inch)

Dielectric constant εr:> 1.6, depending on the antenna and application

Process temperature: -196 ... 250 °C（-321 ... 482 °F (depending on antenna and sealing)

Process pressure: up to 40 bar g (580 psi g) (depending on sealing and process temperature)

Protection ratings: Type 4X/NEMA 4X, Type 6/NEMA 6, IP67, IP68

Power supply: Standard 24 V DC (maximum 30 V DC), loop resistance up to 800 Ω