Wiseman RVD Series High-Voltage DC Resistive Divider (100 kV / 200 kV / 400 kV / 600 kV)

Overview

The Wiseman RVD Series High-Voltage DC Resistive Divider is a precision metrology-grade instrument engineered for stable, repeatable measurement of steady-state direct current high voltages up to 600 kV. Unlike capacitive or resistive-capacitive dividers intended for AC or pulsed applications, the RVD employs a purely resistive voltage division principle based on a precisely matched, thermally stabilized ladder network of metal-film resistors. This architecture ensures minimal temperature-induced drift and eliminates dielectric absorption or phase shift artifacts—critical for traceable DC calibration workflows in national metrology institutes, accelerator laboratories, and high-energy physics test facilities. The divider operates exclusively in DC mode and is not rated for AC, ripple, or transient voltage measurement. Its cylindrical mechanical housing integrates polished spherical high-voltage terminals to suppress corona discharge at rated potentials, while maintaining mechanical rigidity and electrostatic field uniformity across the resistor chain.

Key Features

• Precision resistive ladder topology using low-TCR (<25 ppm/°C standard, 15 ppm optional) metal-film resistors, laser-trimmed for ratio stability
• Corona-free design achieved via polished spherical HV terminals and optimized electric field grading geometry
• BNC output interface delivering a scaled-down, low-impedance analog signal (e.g., 1000:1, 2000:1, or custom ratio) compatible with standard digital multimeters (DMMs) having ≥10 GΩ input impedance
• Cylindrical stainless-steel enclosure providing EMI shielding, mechanical robustness, and environmental protection (IP54 equivalent)
• No internal active electronics—fully passive operation ensures long-term reliability and immunity to electromagnetic interference
• OEM customization available for form factor, mounting configuration, terminal layout, and division ratio to meet integration requirements in mass spectrometer HV supplies, ion beam sources, and semiconductor process equipment

Sample Compatibility & Compliance

The RVD series is designed for use with high-impedance DC voltmeters compliant with IEC 61000-4-30 Class A power quality standards and ANSI C12.1 accuracy classes. It meets mechanical and electrical safety requirements per IEC 61010-1 (Edition 3) for measurement category CAT IV 600 V when used within its specified voltage range and with appropriate clearance/creepage distances. While not certified to ISO/IEC 17025 as a standalone calibration laboratory, each unit ships with a NIST-traceable calibration certificate (as per ISO/IEC 17025–accredited third-party lab), documenting ratio error, temperature coefficient, and linearity over full scale. Annual recalibration is recommended to maintain stated ±0.2% accuracy under GLP-compliant laboratory quality systems.

Software & Data Management

As a fully passive analog transducer, the RVD requires no firmware, drivers, or proprietary software. Measurement data acquisition is performed through industry-standard DMMs or DAQ systems supporting high-impedance DC voltage inputs (e.g., Keysight 3458A, Keithley 2182A, National Instruments PXIe-4081). When integrated into automated test systems, the RVD’s stable ratio enables straightforward linear scaling in LabVIEW, Python (PyVISA), or MATLAB environments. For auditability in regulated environments (e.g., FDA 21 CFR Part 11–compliant labs), users are advised to log calibration certificates, operator IDs, ambient temperature, and DMM serial numbers alongside raw readings—practices aligned with ISO/IEC 17025 documentation requirements.

Applications

• Calibration and verification of high-voltage DC power supplies used in electron microscopy, particle accelerators, and X-ray generators
• Steady-state bias voltage monitoring in time-of-flight mass spectrometers and quadrupole ion traps
• Performance validation of HV insulation systems during type testing per IEC 60060-1
• Reference measurement in national metrology labs conducting inter-laboratory comparisons at DC potentials up to 600 kV
• OEM integration into industrial ion implantation tools where compact, field-proven HV sensing is required without signal conditioning circuitry

FAQ

Can the RVD be used for AC or pulsed voltage measurements?
No. The RVD is strictly a DC-only resistive divider. It lacks frequency compensation and exhibits no defined bandwidth—transient or AC components will not be accurately represented.
What digital multimeter specifications are required for accurate use?
A DMM with ≥10 GΩ input impedance, ≤10 µV offset drift/°C, and DC voltage accuracy better than 0.005% is recommended. Input capacitance should be minimized to avoid loading effects.
Is the RVD suitable for outdoor or high-humidity environments?
The standard RVD is rated for indoor laboratory use (20–30°C, RH <70%). Optional conformal coating and sealed terminations are available for enhanced environmental resilience upon OEM request.
Does Wiseman provide on-site calibration services?
Yes—Wiseman offers accredited on-site calibration services within mainland China and can coordinate international calibration via partner labs meeting ISO/IEC 17025 scope requirements.
How is traceability maintained across recalibrations?
Each recalibration includes updated NIST-traceable certificate referencing primary standards from CNAS-accredited labs, with documented uncertainty budgets per ISO/IEC 17025 Annex A.3.