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ELECTRIC
FIELD SENSOR FOR SPACE RESEARCH LEMI-502
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Electric field sensors – electric probes – are
intended for the measurement of electric field intensity in space plasma
with the help of two similar probes placed at a known distance as well
as for the spacecraft electric potential measurement. This device is
further development of earlier used sensors of such type in the
direction of size reduction without sensitivity and metrological
characteristics quality losses.
To
reduce the influence of solar radiation, special covering which balances the
work functions of photoelectrons at probes’ surfaces was used.
Dimension non-identity of the pair of electric probes LEMI-502 does not exceed 0,5%. |
MAIN TECHNICAL
PARAMETERS
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Operating bandwidth, kHz |
0… 200 |
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Noise level at 1 Hz,
mV/Hz1/2 |
1,0 |
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Dynamic range, dB |
120 |
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Transformation factor, V/V |
1 |
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Temperature range,
°C |
± 80 |
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Power supply, V |
± (5±0,2) |
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Power consumption, W |
< 0.05 |
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Weight, g |
< 180 |
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Outer dimensions, mm |
Æ76
´
185 |
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