JCI 255 Charge Decay Calibrator

For checking performance and for formal calibration of JCI 155v6 and JCI 155v5.

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Compatible with the JCI 155 Charge Decay Time Analyser 



  • Enables regular calibration and health checking of JCI 155 instruments
  • Reduces external calibration costs
  • Easy to use and maintain – simply keep it clean
  • The JCI 255 only requires annual calibration.

General Description

Chilworth recommends that the JCI 155v6 Charge Decay Analyser (and earlier JCI155 models) be formally calibrated at least every 12 months to confirm their sensitivity for surface voltage measurement and decay time measurement performance. However for many in-house quality procedures, calibration is required much more frequently.

The JCI 255 Calibrator Unit conveniently enables the required level of calibration following the general principles set out in BS7506: Part 2: 1996. Minimal down-time is required and your JCI 155v6 need not leave your site.

The JCI 255 Calibrator Unit is calibrated before dispatch and supplied with formal in-situ calibration of the resistors and capacitors inside the unit. The calibration unit itself should be formally recalibrated at 12 month intervals so the values of resistors and capacitors provide measurements of decay times that are traceable to National Standards.

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Key Features

  • Capacitance Nominal Values (nF):   1, 10, 100, 1000
  • Resistor Nominal Values (MW):        10, 100, 1000
  • Decay Time Nominal Values (s):       0.01, 0.1, 1, 10, 100, 1000



Library items

JCI Electrostatic Instrumentation Brochure 2014

Our latest range of JCI electrostatic instruments and services for the consultancy, laboratory testing, hazard assessment, R&D and training sectors.

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JCI155v6 Charge Decay Time Analyser

Two years in development, JCI Chilworth is proud to announce the next generation of our highly successful electrostatic charge decay analyser, the JCI 155v6. A comprehensive advance on previous generations of electrostatic decay analyser, we believe this new monitor outperforms all others on the market today.

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