Clinton Instrument Company introduces a modular calibration system for AC mains, high frequency, and DC spark testers – STCAL.
The STCAL-SM verifies spark tester functionality by determining that the system is detecting all necessary faults.

Key Features: 

• System includes:
  • Separate high- and low-frequency voltmeters.
  • A case containing a Windows-based touch-screen tablet and connecting cables.
• Calibration procedure:
  • Select the appropriate voltmeter and cables.
  • Connect the voltmeter to the spark tester and tablet.
  • Choose a spark tester profile from the touch screen menu.
  • Follow the on-screen directions for completing the calibration.
• Generates a certificate of calibration:
  • Suitable for download, printing, and storage in the customer’s computer.
  • Data is traceable to NIST standards when the STCAL is incorporated into an effective quality assurance program.
• STCAL components:
  • Light enough to be carried to hard-to-reach locations where spark testers are sometimes situated.
• Calibration capabilities:
  • Calibrates AC mains spark testers to 30kV.
  • Calibrates high frequency units to 15kV.
  • Calibrates DC spark testers to 40kV.
• Optional components:
  • STCAL-SM Sensitivity Module:
    • Rotating spark gap controls arc duration and gap distance.
    • Operator selects the type of test to be performed.
    • SM displays the detection current and the required number of controlled faults the spark tester must identify to meet the norm.
    • After the test, operator compares the SM fault count to the faults counted by the spark tester to determine its conformity with the specification.

Sample Systems:

• STCAL Calibration System
• STCAL Calibration System with HF-15A Spark Tester
• Optional STCAL-SM Sensitivity Module

Major Features:

• Verify spark tester detection circuit

• Meet requirements of IEC-62230, EN 50356, and NEMA WC-56