HP 4329A High Resistance Meter
The Yokogawa / Agilent / HP 4329A High Resistance Meter is a precision instrument designed for accurate measurement of high resistance values. It features a wide measurement range, typically from 10^3 to 10^16 ohms, and offers various test voltages to suit different material characteristics. Ideal for evaluating insulation resistance in cables, electronic components, and dielectric materials, the 4329A ensures reliable and repeatable measurements with its advanced circuitry and stable performance. This meter is widely used in quality control, research, and development applications where precise high resistance measurements are critical.
- Model
- Yokogawa / Agilent / HP 4329A
- Calibration
- Available on request
- Price
- $2,259
- Status
- In stock
- RFQ ref
- 4329A
This unit
The HP 4329A is a precision high resistance meter engineered for measurement of very high resistance values spanning 500 kΩ to 2 × 10¹⁶ Ω. Built around a self-oscillating parametric converter circuit with variable-capacitance diode bridge, the instrument converts minute DC currents to AC oscillations, eliminating drift and noise inherent in traditional chopper and vacuum tube designs. This solid-state architecture delivers accurate resistance and current measurements critical for quality control, research, and development in insulation characterization and component validation.
Technical Specifications
Resistance Measurement- Range: 500 kΩ to 2 × 10¹⁶ Ω
- Accuracy: ±3% at low resistance end; ±5% near center scale; ±10% near upper limit; additional ±3% when multiplier set to Rmax
- Test Voltages: 10 V, 25 V, 50 V, 100 V, 250 V, 500 V, 1000 V (all ±3%) Current Measurement
- Range: 5 × 10⁻¹⁴ A to 2 × 10⁻⁵ A (8 ranges)
- Minimum measurable current: 0.05 pA
- Accuracy: ±5% of full-scale deflection, plus ±3% at top decade
- Input impedance: 10⁴ Ω to 10¹¹ Ω depending on selected range Physical & Electrical
- Recorder Output: 0 to 100 mV DC, 1 kΩ output impedance
- Power: 115/230 V ±10%, 50–60 Hz, ~3 VA
- Dimensions: 155 mm H × 198 mm W × 204 mm D
- Weight: 3.5 kg
Key Features
- Seven regulated DC test voltages eliminate measurement uncertainty from supply variation
- Variable-capacitance diode bridge parametric conversion suppresses DC drift and chopper noise
- Instant sample configuration switching via front-panel ground strap relocation - no rewiring required
- Decade-selectable input impedance accommodates finite source impedances in high-impedance applications
- Analog recorder output enables continuous logging of resistance and current trends
Typical Applications Insulation quality assessment in synthetic resins, porcelain, and oils. Component validation in capacitors, transformers, and cable insulation. Leakage current characterization in high-impedance circuits.
Compatibility & Integration The HP 16008A Resistivity Cell integrates with the 4329A for volume and surface resistivity measurement of sheet insulation up to 125 mm W × 125 mm D × 7 mm H.
Yokogawa / Agilent / HP 4329A — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Yokogawa / Agilent / HP 4329A. Calibration covers calibration scope varies by instrument type: vacuum gauges are verified at multiple pressure points against NIST-traceable pressure standards; spectrophotometers at wavelength accuracy and photometric accuracy points; strain gauge indicators at bridge excitation accuracy and full-scale output accuracy; pH meters against certified buffer solutions at pH 4, 7, and 10.. All calibrations ship with a NIST-traceable certificate. Turnaround is typically 1–3 business days after receipt.
Common Yokogawa / Agilent / HP 4329A faults: vacuum gauge filament failure (ionization gauges), spectrophotometer D2 lamp end-of-life, wavelength motor failure, strain indicator front-panel binding post corrosion, pH electrode conditioning failure. Most specialty laboratory instruments fail at their electromechanical interfaces first — vacuum gauge connectors and filament assemblies, spectrophotometer lamp housings and motor drives, strain indicator binding post corrosion. Component-level repair is standard; manufacturer support for legacy instruments is often limited, making third-party bench repair the practical path.
Yokogawa / Agilent / HP 4329A price
This Yokogawa / Agilent / HP 4329A is listed at $2,259. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Yokogawa / Agilent / HP 4329A calibration cost
NIST-traceable calibration for the Yokogawa / Agilent / HP 4329A is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Calibration for this instrument covers calibration scope varies by instrument type: vacuum gauges are verified at multiple pressure points against NIST-traceable pressure standards; spectrophotometers at wavelength accuracy and photometric accuracy points; strain gauge indicators at bridge excitation accuracy and full-scale output accuracy; pH meters against certified buffer solutions at pH 4, 7, and 10.. Turnaround is 1 to 3 business days after receipt. See full calibration details →
