The HP/Agilent 16452A Liquid Test Fixture is a parallel plate capacitor cell designed for precise impedance and dielectric characterization of liquid materials. It connects to compatible LCR meters and impedance analyzers to measure capacitance, dielectric constant (εr’, εr”), and impedance across a broad frequency range. The fixture accommodates sample volumes under 10 mL through interchangeable spacers and operates across extended temperature ranges with appropriate test leads, making it suitable for research, development, and quality control in materials characterization.
Technical Specifications
• Measurement Principle: Parallel plate method
• Frequency Range: 20 Hz to 30 MHz (operating frequency dependent on connected instrument)
• Operating Temperature: -20°C to 125°C (fixture); 0°C to 55°C (16048A leads); -20°C to 125°C (16048G/H + 1250-2375 leads)
• Maximum Operating Voltage: 30 Vrms
• Electrode Diameter: Ø 38 ±0.5 mm
• Electrode Gap: Variable via interchangeable spacers (1.3 mm, 1.5 mm, 2.0 mm, 3.0 mm)
• Sample Capacity: <10 mL; examples include 3.4 mL (0.3 mm gap), 3.8 mL (0.5 mm gap), 4.8 mL (1.0 mm gap), 6.8 mL (2.0 mm gap)
• Connector: 4-Terminal Pair SMA
• Dimensions: 85 mm (H) × 85 mm (W) × 37 mm (D)
• Weight: 1.4 kg
– Key Features
• Measures capacitance and dielectric loss in non-conductive liquids
• Variable electrode spacing accommodates samples with different dielectric properties
• 4-terminal configuration eliminates lead inductance and resistance errors
• Suitable for low-permittivity, low-conductivity materials only; not designed for ionic or saline solutions
– Typical Applications
• Material characterization across research and quality control workflows
• Dielectric property determination from 20 Hz to 30 MHz
• Temperature-dependent impedance measurements from -20°C to 125°C
– Compatibility & Integration
Compatible with Agilent 4263B, 4284A (obsolete), 4285A, Keysight E4980A, E4990A, and Keysight 4294A (limited frequency range). Requires 4-terminal BNC test leads (16048A, 16048G/H + 1250-2375).
