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  7. ARDA – Ambient Rigid Dielectric Apparatus

ARDA – Ambient Rigid Dielectric Apparatus

Designed for the electrical characterization of rigid, flat materials, providing a reliable and versatile fixture for impedance and dielectric measurements over a wide range of sample thicknesses and frequencies.

ARDA – Ambient Rigid Dielectric Apparatus

Compact. Shielded. Precise.

ARDA (Ambient Rigid Dielectric Apparatus) is a compact dielectric measurement cell for rigid, flat insulating materials up to 15 mm thickness. Designed in accordance with the measurement principles of ASTM D150, ARDA enables reliable dielectric measurements from ultra-low frequencies up to 100 MHz.

Its fully enclosed Faraday cage provides effective electromagnetic shielding for sensitive low-frequency measurements, while the guarded two-electrode design helps minimize unwanted surface and parasitic currents.

ARDA – Ambient Rigid Dielectric Apparatus

Key Features

  • ASTM D150 measurement principles
  • Ultra-low-frequency to 100 MHz measurement capability
  • Fully enclosed Faraday cage for electromagnetic shielding
  • Guarded two-electrode configuration
  • 40 mm upper electrode
  • 38 mm current-measuring electrode
  • 0.5 mm guard gap
  • Ultra flat Stainless-steel electrodes with optional gold-plated surfaces
  • For rigid, flat samples up to 15 mm thickness
  • Supports liquid sample cells and disposable electrodes
  • Direct connection to Eynocs Lambda and Zeus
  • Up to 4 BNC connections for external analyzers
  • Extremely compact: only 125 × 120 × 80 mm*

ARDA – Without Front Cover

Analyzer Compatibility

ARDA is designed for direct integration with Lamda and Zeus analyzers, as it can be connected directly without additional measurement cables.

For use with other analyzers or impedance measurement systems, ARDA can be connected through up to four BNC cable connections, providing flexibility for different analyzer configurations.

ARDA Connected to Lamda

Designed for Sensitive Dielectric Measurements

ARDA combines a precision guarded electrode system with a fully enclosed Faraday cage, providing a controlled measurement environment for applications where electrical interference can affect low-level measurements.

Its compact design and flexible analyzer connectivity make ARDA suitable for laboratory dielectric characterization as well as integration into specialized measurement systems.

Technical Specifications:

Sample typeRigid, flat materials
Maximum sample thickness15 mm
Frequency rangeUp to 100 MHz1
Electrode configuration2-electrode, guarded
Upper electrode40 mm Ø
Lower (Current measuring) electrode38 mm Ø
Guard gap0.5 mm
ShieldingFully enclosed Faraday cage
Dimensions125 × 120 × 80 mm* excluding Micrometer
Electrodes MaterialStainless steel – Optional: Gold-plated
BNC ConnectionUp to 4 × BNC
Sample optionsSolid, liquid cell, disposable electrodes
  1. Depending on analyzer, measurement configuration, sample and measurement conditions. ↩︎

Measurement Performance

As a practical demonstration of the measurement capability of ARDA combined with Omega analyzer, an air capacitor of approximately 100 pF was measured inside ARDA.

The capacitor is formed using the 38 mm effective current-measuring electrode, corresponding to an electrode air gap of approximately 100 µm for an air dielectric. Before measurement, the air inside the ARDA measurement chamber was dried overnight to minimize the influence of moisture and humidity on the measurement.

This test demonstrates the actual measurement performance of the Omega when connected to the ARDA. The measured results demonstrate that the combined ARDA/Omega system can operate effectively at capacitance levels around 100 pF, extending practical measurement performance beyond what might be inferred from the nominal capacitance-range specification alone.

ARDA – Air Capacitor – Omega – HZx

Test configuration:

  • Frequency Range: 1 MHz – 10mHz
  • 4-Wire Connection with 25 cm BNC Cables
  • Approximate capacitance: 100 pF
  • Dielectric: Air
  • Effective electrode diameter: 38 mm
  • Electrodes Gap: approximately 100 µm
  • Measurement environment: ARDA fully enclosed Faraday cage
  • Air condition: dried overnight
  • Instrument: Omega analyzer
  • Removed Guard for this special measurement
  • Purpose: Demonstration of practical measurement capability

For use with other analyzers or impedance measurement systems, ARDA can be connected through up to four BNC cable connections, providing flexibility for different analyzer configurations.

Brochure
User Manual