Series
LTI20Compact 60 GHz Radar Level Transmitter (316L SS / PEEK)
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NOSHOK
LTI20 Series Radar Level Transmitter
The NOSHOK LTI20 Series Radar Level Transmitter provides high-precision, non-contact continuous level measurement utilizing advanced 60 GHz FMCW (Frequency Modulated Continuous Wave) radar technology. Engineered with an ultra-compact 316L Stainless Steel body (weight approx. 2.8 oz) and a chemically resilient PEEK antenna lens with FKM sealing, it delivers reliable level data across spans from 4 inches (100 mm) up to 300 inches (25 ft / 7.6 m) with ±0.2 inch accuracy (per IEC 62828-4) and ≤ 0.079 inch non-repeatability. The focused ±6° radar beam excels in liquids, highly viscous fluids, and solid media (dielectric constant Er ≥ 2), unaffected by vapors, steam, temperature fluctuations, or agitation. Capable of non-invasive measurement directly through plastic container walls, the LTI20 simplifies integration into mobile machinery, agricultural equipment, injection molding, pumping stations, and industrial storage. It features simple magnetic touch calibration without opening the enclosure, 4-20 mA or 0-5 Vdc 3-wire outputs, M12 or integral cable connections, process pressures up to 362 psi (25 bar), and optional high-temperature ratings up to 302 °F (150 °C).
Continuous non-contact radar level measurement using cutting-edge 60 GHz FMCW technology (57.4 to 61.4 GHz)
Measuring span from 4 in (100 mm) min to 300 in (25 ft / 7.6 m) max distance (extended spans upon request)
High accuracy of ±0.2 inches (±5 mm) per IEC 62828-4 with non-repeatability ≤ 0.079 inches (2 mm)
Focused narrow ±6° beam angle prevents false echoes from internal tank obstructions and agitators
Ready for quotationShare your range, connection and case requirement.
Talk to ATHTechnologyFMCW Radar (60 GHz technology; 57.4 GHz to 61.4 GHz frequency band); ±6° beam angle
Measuring distanceMin 4 in (100 mm); Max 300 in (25 ft / 7.6 m) - additional spans available on request
Accuracy & RepeatabilityAccuracy: ±0.2 in per IEC 62828-4; Non-repeatability: ≤ 0.079 in (2 mm)
Output signals4 mA to 20 mA, 3-wire; 0 Vdc to 5 Vdc, 3-wire
Media dielectric constantEr ≥ 2 (liquids, viscous media, bulk solids)
Housing & Lens316L Stainless Steel housing and connection; PEEK lens; FKM O-ring seal; IP67 rating
Process connections1/2" NPT male (code 8); G 1/2 male DIN 3852-2-A (code 86)
Electrical connectionsM12 x 1 4-pin connector (code 25); 6' integral PVC cable (code 36)
Operating pressureMax 362 psi (25 bar)
Temperature rangesStandard: -40 °F to 212 °F (-40 °C to 100 °C); High Temp (HT): -40 °F to 302 °F (-40 °C to 150 °C)
Power requirement8 Vdc to 36 Vdc
WeightApproximately 2.8 oz (80 g)
Part number exampleLTI20 - 36 - 8 - 25
Technical data
Selection and ordering reference
Configure output signal, process connection, electrical interface, and temperature rating for the NOSHOK LTI20 Series Radar Level Transmitter.
Frequency60 GHz FMCW (±6° beam)
Measuring span4 in to 300 in (25 ft / 7.6 m)
Accuracy±0.2 in (±5 mm)
Output signals4-20 mA 3-wire, 0-5 V 3-wire
Body material316L SS / PEEK Lens
ProtectionIP67 / 362 psi (25 bar)
Output Signal
364 mA to 20 mA, 3-wire
20 Vdc to 5 Vdc, 3-wire
Process Connection
81/2" NPT male
86G 1/2 male (DIN 3852-2-A)
Electrical Connection
25M12 x 1 (4-pin) connector
366' integral PVC cable
Options
HTHigh Temperature version (media up to 302 °F / 150 °C)
Part number example
LTI20 - 36 - 8 - 25
LTI20SeriesRadar level transmitter
36Output4-20 mA 3-wire
8Connection1/2" NPT male
25ElectricalM12 x 1 4-pin
Technical specifications
Radar frequency60 GHz FMCW (57.4 to 61.4 GHz)
Span range4 in to 300 in (25 ft / 7.6 m)
Accuracy±0.2 in (±5 mm) per IEC 62828-4
Wetted materials316L SS, PEEK lens, FKM seal
Operating pressureMax 362 psi (25 bar)
Enclosure ratingIP67
Operating notes
Non-contact radar measurement is immune to fluid viscosity, density changes, and foam.
Through-wall measurement through plastic tanks provides leak-free, non-invasive installation.
Simple touch magnetic calibration sets zero and full span in seconds without opening the housing.
Product Description
The NOSHOK LTI20 Series Radar Level Transmitter is a miniature, ultra-versatile 60 GHz non-contact radar sensor engineered for demanding level monitoring in industrial tanks, mobile hydraulic machinery, agricultural sprayers, and chemical containers. Utilizing narrow-beam FMCW microwave technology, it accurately measures liquid levels, slurries, and solid surfaces through air without physical contact, eliminating issues associated with fluid buildup, aggressive vapors, corrosion, or mechanical wear.
Because 60 GHz radar easily penetrates non-metallic materials, the LTI20 can also be mounted completely outside of plastic IBC totes, drums, and polymer tanks, allowing non-invasive continuous level monitoring without cutting holes or risking chemical leaks. Field commissioning is exceptionally fast thanks to magnetic-key calibration, allowing operators to set the empty/full range by holding a magnet to the housing label.
60 GHz FMCW radar provides reliable millimeter-level tracking unaffected by dust, foam, or atmospheric pressure
Non-invasive mounting through plastic container walls eliminates wetted parts and leak paths
Narrow ±6° beam angle fits small vessel nozzles and avoids internal ladder or mixer reflections
Patented magnetic touch calibration allows sealed zero/span setting in seconds
High temperature option (HT) withstands process fluid temperatures up to 302 °F (150 °C)
Ordering Information
SeriesLTI20 (Compact 60 GHz radar level transmitter)
Output signals36 = 4 mA to 20 mA, 3-wire; 2 = 0 Vdc to 5 Vdc, 3-wire
Process connections8 = 1/2" NPT male; 86 = G 1/2 male (DIN 3852-2-A)
Electrical connections25 = M12 x 1 (4-pin); 36 = 6' integral PVC cable
OptionsHT = High Temp (302 °F / 150 °C media temperature rating)
Part Number Example
Standard exampleLTI20 - 36 - 8 - 25
SeriesLTI20 = Compact radar level transmitter
Output signal36 = 4 mA to 20 mA, 3-wire
Process connection8 = 1/2" NPT male
Electrical connection25 = M12 x 1 (4-pin) connector
Product Specifications
Frequency & BeamFMCW 60 GHz (57.4 to 61.4 GHz); Beam angle ±6°
Measuring distance4 in (100 mm) min to 300 in (25 ft / 7.6 m) max
Accuracy±0.2 in (±5 mm) per IEC 62828-4; Repeatability ≤ 0.079 in
Switch-on & SettlingSwitch-on time < 3 s; Settling time 1 s (IEC 62828-1); Response time 4 s
Operating pressureMax 362 psi (25 bar)
Temperature limitsMedia standard: -40 °F to 212 °F (-40 °C to 100 °C); Media HT: -40 °F to 302 °F (-40 °C to 150 °C); Ambient: -40 °F to 212 °F
Housing & Wetted parts316L Stainless Steel body & process connection; PEEK lens; FKM O-ring
Environmental ratingIP67 dust-tight and temporary immersion protection
Electromagnetic ratingBuilt-in RFI, EMI, and ESD protection; reverse polarity, overvoltage, short circuit
Shock & VibrationShock: 100 g, 11 ms (IEC 60068-2-27); Vibration: 40 g short duration, 10 g long term (IEC 60068-2-6)
WeightApprox. 2.8 oz (80 g)
Operating & Calibration Notes
Calibration in Empty Tank: 1) Install sensor and connect signal. 2) Hold supplied magnet to 'CAL' label position until signal drops to 1 mA (0 V). 3) Continue holding for ~10 seconds until signal reaches 2.5 mA (2.5 V). 4) Remove magnet; calibration completes automatically in 5 seconds.
External Through-Wall Mounting: When installing outside plastic tanks (IBCs, drums, poly tanks), ensure the plastic wall thickness is uniform and within manufacturer limits, maintaining the sensor perpendicular to the liquid surface.
Beam Clearance: Position the sensor away from tank walls and internal obstructions such as fill pipes, ladders, and agitator blades to avoid false reflections.
Magnetic calibration requires no laptops, programming communicators, or process pressure reference.
High frequency 60 GHz radar penetrates dust, steam, and condensation on the PEEK lens without loss of signal.
IP67 sealed 316L SS housing withstands harsh chemical washdown and mobile outdoor environments.