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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 FOR CALIBRATION (based on BS7506: Part 2: 1996)
• METHODS OF MEASUREMENT:
  • TEST METHOD TO MEASURE SURFACE VOLTAGES CREATED ON TRIBOCHARGING INHABITED GARMENTS
  • Body voltage generation getting out of a car.
  • Charge decay.
  • Capacitance loading.
  • Testing plastic mouldings
  • Use of fieldmeters to measure atmospheric electric fields
  • INSTRUMENTATION FOR LONG TERM CONTINUOUS MEASUREMENT OF GROUND LEVEL 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)

   

• John Chubb biographical notes
• High vacuum work at UKAEA Culham Laboratory
• Patents

• Letters to Editors

John Chubb
2 Monica Drive, Pittville, CHELTENHAM, GL50 4NQ, UK.
Tel:+44 (0)1242 573454 Fax: +44 (0)1242 573454
email: jchubb@infostatic.co.uk