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EFM-100 Electric Field Monitor

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Measuring the static electric field generated by thunderclouds the Boltek EFM-100 not only detects nearby lightning but can detect the atmospheric conditions which precede lightning. Electric field data is displayed and graphed on your desktop computer using the included software.

For complete electrical isolation from the field mill outside, the EFM-100 connects to your computer using a fibre optic cable. The EFM-100 features aluminium and stainless steel construction for corrosion resistance, gold plated connectors throughout, and the highest quality ball-bearing motor for excellent reliability.

Please call or click on the link to send us an email for a systems quote on this item.

Features:

> Log date, time and distance of nearby lightning.
> Monitor lightning up to 24 miles (38 km) away.
> Detect the high electric field conditions which precede lightning.
> Short-range detector is optimized for close lightning to provide the best distance accuracy while ignoring far away lightning.
> Monitor up to four separate locations per PC.
> Watch trends develop.
> Attention grabbing alarms
> Review archived data from previous storms.

How it Works:

Electric fields develop wherever there is a difference in electric potential. The electric charge contained in a thundercloud generates an electric field which can be measured on the ground; while lightning is detected as a sudden change in the static electric field.

Electric field is measured in Volts per meter (3.3 feet). The electric fields which accompany thunderstorms normally measure in the thousands of Volts per meter, usually abbreviated to kV/m.

The EFM-100 software has three built-in alarms: High Field, Very High Field, and a Lightning alarm. Both Field alarms activate if the electric field magnitude rises above a pre-set level (user configurable). The display turns red when the Very High Field alarm is active. The software plays a user selectable WAV file when an alarm activates. The WAV file messages will repeat at a predefined frequency (user-configurable).The display turns yellow when the High Field Alarm is active. Once the field returns to normal the display will return to green.


	Lightning distances and alarm statuses are announced over your computer speakers. Up to four field mills can be monitored. The field mills can be connected to the computer directly or remotely over a network.

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