NOTE:
Careful removal and replacement of the stator on the CS110 does not invalidate the
factory-derived M
parallel_plate
value of a given unit. However, switching stators with another
unit or bending the stator, shutter, or sense electrodes invalidates the factory parallel-plate
calibration because of possible electrode dimension changes.
7.6 Site correction
Each CS110 is factory calibrated in a parallel plate calibration fixture, resulting in the calibration
equation E = M
parallel_plate
• V. However, when monitoring the Earth's electric field, this equation
is valid only if the instrument aperture is mounted flush with the Earth's surface and facing
upward. Yet, for permanent outdoor measurements of electric field, a flush-mounted and
upward-facing orientation is problematic because of dirt, rain, bird droppings, debris, etc.,
collecting on the sense electrodes and fouling the measurement. Consequently, a
downward-facing and elevated configuration is recommended for long-term field applications,
as illustrated in the following image.
CS110 Electric Field Meter 22
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