Agilent/Keysight 85070E

The Keysight 85070E Dielectric Probe Kit measures complex permittivity of materials across broad frequency ranges, operating in conjunction with a Keysight network analyzer and specialized software. It determines intrinsic electromagnetic properties—dielectric constant (ε’), dielectric loss factor (ε”), loss tangent, and Cole-Cole parameters—correlating results to material characteristics including biomass, bulk density, chemical concentration, and bacterial content. The coaxial probe method enables non-destructive, real-time measurements on liquids, semi-solids, and flat-surfaced solids, serving research, development, quality assurance, and process monitoring in RF/microwave electronics, food, medical, and chemical industries.

– Technical Specifications

• Frequency Range: 200 MHz to 50 GHz (configuration-dependent; certain probes rated to 20 GHz)
• Measurement Parameters: Complex permittivity; dielectric constant; dielectric loss factor; loss tangent; Cole-Cole representation
• Sensing Volume: 3.5 mm aperture provides enlarged sensing volume relative to alternative probes
• Accuracy: Performance dependent on material under test; typical accuracy measured at 23 ±3 °C, excluding probe contact and cable flexure effects
• Repeatability: For granular materials, repeatability contingent on density variation
• Temperature Operating Range: −40 °C to +200 °C

– Key Features

• Probe Configurations:
– Performance Probe (Option 050): High-temperature, high-frequency capability in slim design
– High-Temperature Probe (Option 020): Rated −40 °C to +200 °C
– Slim Form Probe (Option 030): Compact profile for small apertures in fermentation tanks and reaction chambers
• Hermetic Construction: Glass-to-metal seal resists corrosive and abrasive chemicals
• Sterilization: Autoclavable for food, medical, and chemical sector requirements
• Connector Options: 3.5 mm male (standard configurations); 2.4 mm male (50 GHz coverage); adapters available (Type-N female to 3.5 mm male; 3.5 mm male to 2.4 mm female)

– Typical Applications

• Quality assurance and process monitoring in food and beverage production
• Medical device and pharmaceutical development
• Chemical concentration and composition analysis
• RF and microwave material characterization
• Bacterial and biomass content assessment

– Compatibility & Integration

The 85070E integrates with Keysight network analyzers and companion measurement software for comprehensive dielectric characterization across the 200 MHz to 50 GHz spectrum.