An electrostatic charge meter using a microcontroller offers advanced features and easier ATEX certification |
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Authors: | Duncan Grant George Hearn William Maggs Isabel Gonzalez |
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Institution: | 1. Department of Electrical and Electronic Engineering, University of Bristol, Bristol BS9 4SB, UK;2. Fraser Antistatic Techniques Ltd, Bampton, Devon, UK |
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Abstract: | The development of a microcontroller-based electrostatic charge meter is described. The meter is of the non-contact type and provides a reading of surface voltage by integrating the current supplied to the probe head to keep it at earth potential as the instrument is brought to within a specified distance of the target. The use of a microcontroller allows the use of a small number of components and the resetting of the integrator without relays or switches as well as self-calibration and auto-ranging. The minimal use of capacitors and complete lack of inductance facilitates ATEX certification. |
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