Is your current contacting level technology undependable, unreliable, or maintenance-intensive? Do steam and vapors affect the accuracy and dependability of your existing level device? Do tanks and silos with coned bottoms cause problems getting reliable low level measurements?

Siemens radar technology has the cure for your level headaches. Reliable liquid and bulk solid level measurements, unaffected by steam and vapor. Narrow beam angle radars that provide strong level signals, even in tanks and silos with coned bottoms. Dynamic TVT thresholds that adjust depending on signal strength to reduce Loss-of-Echo errors. Process Intelligence quick start, easy menus, and step-by-step tuning, so you can configure your transmitter in as few as two parameters and less than five minutes — and reprogram the unit without a factory guy if your needs change. All of this and more, for anything from simple liquid storage tanks to dry solids and tall tanks, with prices starting under $1000.

Compare Siemens liquid level radar instruments

Model	SITRANS Probe LR	SITRANS LR200	SITRANS LR250	SITRANS LR400	SITRANS LG200
Media	Liquids		Liquids and Slurries		Liquids, Slurries, and Interfaces
Frequency	6.3 GHz pulse radar		25 GHz pulse radar	24 GHz FMCW radar	Guided wave radar
Range	1 to 66 feet (0.3 to 20 meters)		2" to 66 feet (0.5 to 20 meters)	1.15 to 164 feet (0.35 to 50 meters)	0.5 to 75 feet (0.15 to 22.5 meters)
Antenna	Rod standard; Horn available, purge optional		Horn	Horn	16 different probes available
Process Temp.	-40° to 176°F	-40° to 392°F	-40° to 320°F	-40° to 382°F	-320° to 800°F
Process Pressure	43.5 PSI max.	580 PSI max.			Full vacuum to 6250 PSI max.
Dielectric Constant	>3 (for <3 use waveguide antenna or stillpipe		>1.6 (depends on horn and use)	>1.6	Liquids >1.4 to Liquids/slurries >10
Accuracy	±Greater of 0.1% range or 10mm		±0.02 mA	≤ 5mm at 2m to 10m, ≤15mm at 10m to 50m	To 2.5mm (0.1")
Output	4-20 mA, HART	4-20 mA, HART or Profibus PA, NE 21, NE 43		4-20 mA, HART or Profibus PA, 1 relay	4-20 mA, HART
Communi- cations	HART, SIMATIC PDM, Siemens infrared handheld			HART, Profibus PA, SIMATIC PDM, Siemens infrared handheld	HART, SIMATIC PDM, Siemens infrared handheld
Process Connection	Threaded, flanged, and sanitary		Threaded or flanged	Flanged	Threaded or flanged
Local Display	Multi-segment alphanumeric LCD with bar graph		Graphical interface, with quick-start wizard and echo profile display	Alphanumeric LCD for readout and entry
Enclosure	PBT polymer plastic, Type 4X/NEMA 4X, Type 6/IP68	Aluminum, Type 4X/NEMA 4X, NEMA 6/IP67	Aluminum, Type 4X, NEMA 4X, Type 6, NEMA 6, IP67, IP68	Aluminum, Type 4X, NEMA 4X, IP67, Type 6/NEMA 6	Epoxy-coated aluminum, Type 4, NEMA 4, IP65
Approvals	CE, CSA, FM, ATEX		CE, CSA, FM	CSA, CE, FM, ATEX	CSA, CE, FM, 3A, ATEX

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Compare Siemens solids level radar instruments

Model	SITRANS LR260	SITRANS LR460	SITRANS LR560
Media	Solids	Solids	Solids
Frequency	25 GHz pulse radar	24.2 to 25.2 GHz FMCW radar	78 GHz FMCW radar
Range	2" to 98 feet (0.05 to 30 meters)	1.15 to 328 feet (0.35 to 100 meters)	15.75" to 328 feet (0.4 to 100 meters)
Antenna	2", 3", or 4" diameter horn, optional dust cover and purge connection	3" or 4" diameter horn, optional dust cover and purge connection	Lens antenna, highly resistant to product buidup, with built-in air purge connection
Process Temp.	-40° to 392°F	-40° to 392°F	-40° to 392°F
Process Pressure	7.25 PSI (0.5 bar) max.	7.25 PSI (0.5 bar) max.	43.5 PSI (3 bar) max.
Dielectric Constant	>1.6	>1.4	>2.0
Accuracy	1" (25mm) from minimum detectable distance to 11.8" (300mm); Rest of range: Greater of 0.4" (10mm) or 0.1% span	Greater of 1" (25mm) or 0.25% span, non-repeatability ≤0.4" (10mm)	Greater of 1" (25mm) or 0.25% across full range (includes hysteresis and non-repeatability)
Analog Output	4-20 mA loop powered	4-20 mA optically isolated	4-20 mA
Communications and Programming	HART, Profibus PA, SIMATIC PDM, intrinsically safe handheld programmer, local operation	HART, Profibus PA, SIMATIC PDM, intrinsically safe handheld programmer, local operation	HART communicator, SIMATIC PDM, AMS, PACTware, intrinsically safe handheld programmer, or local user interface
Process Connections	Universal: 2", 3", 4", or 6" with integral EasyAimer	Universal: 3", 4", or 6" with integral EasyAimer	Universal flat-faced flanges or Aimer flanges (3", 4", and 6" sizes)
Local Display	Graphic LCD with bargraph and echo profile	Alphanumeric LCD	Grapic LCD with bar graph representing level
Enclosure	Polyester powder-coated aluminum, Type 4X/NEMA 4X, Type 6/NEMA 6, IP67, IP68	Polyester powder-coated aluminum, Type 4X/NEMA 4X, Type 6/NEMA 6, IP67, IP68	316L stainless steel, Type 4X/NEMA 4X, Type 6/NEMA 6, IP68 with lid closed
Approvals	CSA, CE, FM, ATEX	CSA, CE, FM, ATEX	CSA, CE, FM, ATEX

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