Proximity Detectors
Proximity Detectors
(OP)
I am after a non-contact voltage detector(proximity detector) that has the following capabilities:
1)Ability to detect as low as 10V and high as 500V.
2)Self Test function.
3)No sensitivity adjustment.
Does anyone know of such a device?
Also, does anyone know if such devices will operate reliably whilst in close proximity to HV Power Lines ie. 11kV to 66kV?
1)Ability to detect as low as 10V and high as 500V.
2)Self Test function.
3)No sensitivity adjustment.
Does anyone know of such a device?
Also, does anyone know if such devices will operate reliably whilst in close proximity to HV Power Lines ie. 11kV to 66kV?





RE: Proximity Detectors
RE: Proximity Detectors
RE: Proximity Detectors
CAM83, are you interest in detecting DC, or AC? if AC what frequency?
Why can't you connect to the 10 to 500 volts using a high resistance resistor?
More details on what you are trying to do would be helpful for the best solution.
RE: Proximity Detectors
TTFN
RE: Proximity Detectors
RE: Proximity Detectors
<nbucska@pcperipherals DOT com> subj: eng-tips
read FAQ240-1032
RE: Proximity Detectors
you say there is no field associated with a voltage. Remember the electric field? Voltages give rise to electric fields. Currents give rise to magnetic fields.
In order to sense an electric field, an earth reference would be needed. Either that or the probe would only be able to sense a local gradient in the field.
Cam83
if the probe is detecting voltage, then the closer it gets to the source, the larger the reading will be. Also the shape of the source will affect the reading. Calibration would be meaningless. But then you say you want to detect 10V in the presence of 66kV power lines. Unless the voltage you are sensing is a different frequency (such as DC) to the high voltage power cables, the high voltage power cables will almost certainly "swamp" any readings of the small voltage.
RE: Proximity Detectors
RE: Proximity Detectors
I do agree with logbook. I cannot see that any sensing of such a small voltage will not be affected by the HV lines.
RE: Proximity Detectors
RE: Proximity Detectors
"Venditori de oleum-vipera non vigere excordis populi"