A free-space radar level transmitter sends a microwave signal toward the product surface and evaluates the returning echo. Frequency is only one design choice; antenna, beam pattern, signal processing, nozzle and target behaviour matter together. Begin with measuring distance and the actual empty and full references, then provide vessel diameter and height, nozzle diameter and length, mounting position, roof shape and every structure that may enter the beam. A narrow beam can help in constrained geometry but does not make obstructions or poor mounting irrelevant.
The target determines available echo margin. Liquids and solids differ, and low dielectric media, turbulent surfaces, steep repose angles, foam, dust or weakly reflecting material can complicate measurement. Vapour and most ordinary gases may have limited effect, but heavy condensation, buildup on the antenna or severe process conditions can still reduce signal quality. Describe filling streams, agitators and surface movement. A supplier should review the proposed antenna and installation against those conditions instead of quoting an unconditional maximum range.
Nozzle and process boundary details are essential. A long narrow nozzle can introduce reflections or restrict the antenna view. The antenna may need to extend beyond a nozzle or use a configuration intended for it, subject to the model drawing. State flange or thread, pressure, temperature, vacuum, corrosion, cleaning and any purge requirement. For solids, include dust, abrasion and impact environment. For hazardous locations, request the exact certificate and installation instructions for the selected housing and electrical connection.
TYCK radar families below provide starting points for liquid and solid applications. An RFQ should include vessel sketch, target medium, dielectric information if known, measuring range, nozzle, obstructions, foam or dust, pressure, temperature, output and required records. Ask for beam guidance, blind-zone information, antenna and wetted materials, process limits and commissioning instructions. Do not transfer range, accuracy or approval statements between 26 GHz, 80 GHz or visually similar variants without a matching document.