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Cavity Resonators for Liquid

Electronic Coolant

highly sensitive measurement of εʀ and tan δ in low-loss fluorinated liquids (e.g., Fluorinert FC-40).

Oil

broadband determination of complex permittivity for vegetable or lubricating oils..

εs ε∞ ωε'

Dispersion

Reveal liquids hidden molecular dynamics by mapping how their dielectric constant and loss tangent change with frequency.

  • Frequency range:
 10 – 24 GHz
  • Dielectric constant:
 Dk = 1 – 20 (achievable accuracy: δDk < 0.5%)
  • Loss tangent:
 Df > 10-4 (achievable accuracy: δDf < 2%)
  • Temperature:
 10 – 100 °C
  • Software-controlled measurement

3M Fluorinert Electronic Liquid FC-40

Relative permittivity results for 3M Fluorinert FC-40
Loss tangent results for 3M Fluorinert FC-40
Fig. 3. FPOR-LIQ results for 3M Fluorinert FC-40 compared with dielectric and cavity-resonator measurements.

Engine Oil

Relative permittivity results for engine oil
Loss tangent results for engine oil
Fig. 2. FPOR-LIQ measurements of engine oil compared with dielectric and cavity-resonator results.

Canola Oil

Relative permittivity results for canola oil
Loss tangent results for canola oil
Fig. 1. FPOR-LIQ measurements of canola oil compared with dielectric and cavity-resonator results.

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