VRS-100 Series provides high-performance resistance standards specifically engineered for the calibration and verification of high-resistance measurement instrumentation, such as Megohmmeters and Insulation Testers.

Constructed with high-quality Kel-F isolation, the series minimizes leakage current and ensures reliable performance. It serves as a primary standard in calibration laboratories and is essential for industries requiring high precision, including Electronics, Aerospace, and Electrical Power Systems.

Technical Specifications:

• Resistance Range:
  • Standard: 1 kΩ to 100 GΩ
  • Extended Options: 1 TΩ and 10 TΩ
• Accuracy: Down to ±20 ppm (tight tolerance for precision work).
• Temperature Coefficient (TC): Low TC of 5 ppm/°C minimizes thermal drift.
• Long-Term Stability: Better than 10 ppm/year.
• Voltage Rating:
  • Standard Model: Max 5,000 V
  • High-Voltage Model: Max 10,000 V
• Construction: Hermetically sealed with Kel-F isolation to prevent leakage.
• Terminals: Equipped with Guard and Ground terminals for maximum measurement accuracy.

Important Usage Notes:

• Leakage Effects: For high resistance values, leakage paths can distort readings. Always utilize the Guard terminal to shunt leakage current away from the measurement circuit.
• Environmental Control: Operate in a temperature and humidity-controlled environment to maintain the standard’s stability.
• Very High Resistance: For resistance requirements exceeding 10 TΩ, we recommend using SRC-T network standards.