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• JCI INSTRUMENTS:

  Descriptions of individual instruments. JCI instruments are now manufactured and marketed by JCI Chilworth, and it is they who should be contacted for availability, price, etc.

  • JCI 140 STATIC MONITOR
  • JCI 147 Faraday Pail
  • JCI 247 Faraday Pail
  • JCI 150 Faraday Pail
  • JCI 148 Electrostatic Voltmeter
  • JCI 155v5 CHARGE DECAY TEST UNIT
  • JCI 166 Sample Support
  • JCI 176 Charge Measuring Sample Support
  • JCI-Graph
  • JCI 191 Controlled Humidity Test Chamber
  • JCI 255 Calibrator Unit
  • JCI 400 Data Station
  • JCI 131 Electrostatic Fieldmeter
  • JCI 178 Charge Measurement Unit
  • JCI 256 Charge Calibrator
  • JCI 504 Lightning Warning System

  (Some examples of displays of observations are available)

  • JCI Calibration service
  • User manuals:
    • JCI 140
    • JCI 111
    • JCI 147
    • JCI 247
    • JCI 150
    • JCI 148
    • JCI 155v4
    • DECAY18
    • JCI 155v5
    • JCI 131
    • JCI 134
    • JCI 504
    • JCI 170
    • JCI 176
    • JCI 178
    • JCI 255
    • JCI 256
    • JCI 191
    • JCI 192
    • JCI-Graph (v2.2)
    • JCILOG (.pdf) (.html)
    • JCI 255 Calibrator Unit

METHODS OF MEASUREMENT:
• TEST METHOD TO ASSESS THE ELECTROSTATIC SUITABILITY OF MATERIALS FOR RETAINED ELECTROSTATIC CHARGE

• METHODS FOR CALIBRATION (based on BS7506: Part 2: 1996)
• TEST METHOD TO MEASURE SURFACE VOLTAGES CREATED ON TRIBOCHARGING INHABITED GARMENTS

• "THE MEASUREMENT OF ATMOSPHERIC ELECTRIC FIELDS USING POLE MOUNTED ELECTROSTATIC FIELDMETERS"

• Body voltage generation getting out of a car.
• Charge decay.
• Capacitance loading.
• Testing plastic mouldings
• Use of fieldmeters to measure atmospheric electric fields
• Iinstrumentation for long term continuous measurement of atmospheric electric fields Paper presented with Ian Pavey at Inst Phys 'Environmental Electrostatics 2' meeting 24 June, 2009 at Institute of Physics, London.
• Comments on approaches for measuring 'Charge Decay'.
• Test method for assessing surface volt ages on inhabited cleanroom garments.
• "Test method to assess the electrostatic suitability of materials for retained electrostatic charge" Document prepared for discussion as prospective British Standard.
• Steps for predicting maximum surface voltages on garments.
• Signal processing for charge decay measurement

• RESULTS FROM STUDIES:
  • Charge decay and capacitance loading studies on papers:
  • Immunity of 'field mill' fieldmeters to ion currents.
  • "Experimental comparison of the electrostatic performance of materials with tribocharging and with corona charging"
  • "The electrostatic suitability of materials"

• PAPERS: - available on Website:
  • Avoiding shocks when getting out of a car
  • Studies on car seats (paper presented at Inst Physics meeting 'Static & Textiles' March 1998)
  • Approaches to avoid problems with static electricity
  • "The assessment of materials for risks or problems from retained static charge
  • "Measurements of tribo and corona charging features of materials for assessment of risks from static electricity" (Paper as included in proceedings of IEEE-IAS meeting, Phoenix, Arizona 5 Oct 1999) (overhead slides used) . Formal paper published in IEEE Trans Ind Appl 36 Nov/Dec 2000 p1515
  • "New approaches for electrostatic testing of ma terials" Paper presented at Electrostatics Society of America meeting, Niagara Falls, 18-21 June, 2000. Published in J. Electrostatics 54 March 2002 p233
  • A system for the advance warning of lightning Paper presented at El ectrostatics Society of America meeting, Niagara Falls, 18-21 June, 2000

  (Some examples of displays of observations are available)

  • "FIBC ignition risks from static electricity" Article in 'Bulk Handling International', May/June 2000 p25 (Turret RAI plc).
  • "Measuring the shielding performance of materials" (Paper presented at IEEE-IAS meeting, Rome Oct 2000)
  • "Comment: Voltage on insulators IS meaningful!" Letter to the Editor EOS/ESD Association Newsletter 'Threshold' July/August 2001 in response article by Niels Jonassen in May/June 2001 issue of 'Threshold'.
  • "Can cleanroom garments create electrostatic risks?" 'Cleanroom Technology' March, 2002, p38 and on-line at: ESD Journal
  • "Can one predict the surface voltages that will arise on cleanroom garments by tribocharging?". (An earlier version on-line at: ESD Journal)
  • "Static and Packaging: Introductory Comments" Presented at Institute of Physics 'Electrostatics Group' meeting 8 Jan, 2003, in London.
  • "Assess ing the suitabilitiy of materials" Presented at Institute of Physics 'Electrostatics Group' meeting 8 Jan, 2003, in London.
  • "Comments on methods for measuring 'Charge Decay": Some personal comments on the various methods in use for measuring the charge decay characteristics of materials. Published in J. Electrostatics Sept 2004

  • "AN INTRODUCTION TO ELECTROSTATIC MEASUREMENTS" Book by John Chubb published August 2010 by Nova Publishers (ISBN: 978-1-61668-251-4)
   
  • For other, and more recent, papers published by John Chubb have a look at the full list in the Papers page

• JOHN CHUBB biographical notes
• HIGH VACUUM WORK at UKAEA Culham Laboratory
• Patents

• Letters to Editors

John Chubb, email: jchubb@infostatic.co.uk