Gordon Engineering Corp.  

Antenna Design


Safety Note


This overview is meant to illustrate some basic principles of antenna design - it is not intended to act as a substitute for the detailed instructions contained in the PC200 User's Manual.

Please read the manual carefully before attempting an actual installation.



Antenna Definition - A rigid conductor, mounted on insulators and placed around or adjacent to an area to be protected. See the PC200 conveyor-stop application, for an example of a typical antenna.


Materials - Antennas may be constructed of metal rod, flat stock, 1/2" or 3/4" copper pipe or 3/4" electrical conduit; materials must be rugged enough for the environment and hollow, in order to maximize field.


Insulators - Any rigid, nonporous insulating material is suitable to isolate the antenna from ground. The antenna must not touch ground, and should be kept 3 inches or more from grounded metal, if possible. Insulators should be wiped clean regularly, to insure proper operation. The insulators page gives prices and specifications on some insulators that are commonly used. These items may be purchased directly from Gordon, purchased from a plumbing supply or made by you.


Sensing Field - The unit generates an electromagnetic field around the antenna elements. This field is sensitive to touch by personnel, machinery and metal parts. Changes in the field are introduced when the antenna is touched, and the unit alarms.



The antenna must be rigidly mounted to prevent movement relative to the machine and ground.

The antenna must be isolated from ground.

The antenna should be mounted no closer to ground than 3 inches.

Install and test according to the PC200 manual.

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