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    [name] => beamDetectorHelp
    [title] => Help and advice regarding the installation on beam detectors
    [content] => <div style="width: 610px;">
<h2>Reflections</h2>
<p>In reflected beam detector systems care should be taken as to the type of surface on which the reflector is mounted. If the surface itself is reflective this can cause the system to function incorrectly.</p>
<p>In the same respect reflective objects too near to the line of sights can cause the infrared beams from both reflective and end to end systems to be reflected away from there desired course causing the system to function incorrectly.</p>
<h2>Obstructions</h2>
<p>Any objects that are placed in the path of the infrared beam will cause a reduction in the beams signal and will ultimately prevent the system from operating correctly.</p>
<table class="noBorder" cellspacing="0" cellpadding="0">
<tbody>
<tr>
<td width="30%"><img title="End to End beam detectors" src="../templates_core/templates/guides/images/beam-detectors/beam-detectors-obstructions1.jpg" alt="End to End beam detectors" /></td>
<td width="70%"><img title="End to End beam detectors" src="../templates_core/templates/guides/images/beam-detectors/beam-detectors-obstructions2.jpg" alt="End to End beam detectors" /></td>
</tr>
<tr>
<td>Fig 1: A permanent beam obstruction</td>
<td>Fig 2: The beam must be positioned away from the obstruction</td>
</tr>
<tr>
<td><img title="End to End beam detectors" src="../templates_core/templates/guides/images/beam-detectors/beam-detectors-obstructions3.jpg" alt="End to End beam detectors" /></td>
<td><img title="End to End beam detectors" src="../templates_core/templates/guides/images/beam-detectors/beam-detectors-obstructions4.jpg" alt="End to End beam detectors" /></td>
</tr>
<tr>
<td>Fig 3: A temporary beam obstruction</td>
<td>Fig 4: The Obstruction must be removed</td>
</tr>
</tbody>
</table>
<h2>Interference</h2>
<p>Many things can interfere with a beam detection system including:</p>
<ul style="padding: 0px 0px 0px 20px;">
<li>Air conditioning units</li>
<li>Air particles: Steam, Flour, Exhaust fumes, Dust etc</li>
<li>Electrical interference</li>
<li>Sunlight's</li>
</ul>
<h2>Structure</h2>
<table class="noBorder" cellspacing="0" cellpadding="0">
<tbody>
<tr>
<td><img title="End to End beam detectors" src="../templates_core/templates/guides/images/beam-detectors/beam-detectors-mounting1.jpg" alt="End to End beam detectors" /></td>
<td><img title="End to End beam detectors" src="../templates_core/templates/guides/images/beam-detectors/beam-detectors-mounting2.jpg" alt="End to End beam detectors" /></td>
</tr>
<tr>
<td>Fig 5: Never mount on a structure which is prone to movement.</td>
<td>Fig 6: Always mount on a solid structure such as brick or block</td>
</tr>
</tbody>
</table>
<h2>Optical Cross Talk</h2>
<p>Beams should be positioned to avoid light from other beams falling on the detector either directly or indirectly.</p>
<table class="noBorder" cellspacing="0" cellpadding="0">
<tbody>
<tr>
<td><img title="End to End beam detectors" src="../templates_core/templates/guides/images/beam-detectors/beam-detectors-cross-talk1.jpg" alt="End to End beam detectors" /></td>
<td><img title="End to End beam detectors" src="../templates_core/templates/guides/images/beam-detectors/beam-detectors-cross-talk2.jpg" alt="End to End beam detectors" /></td>
</tr>
<tr>
<td>Fig 7: Mounting reflectors back to back creates a high possibility for light overspill.</td>
<td>Fig 8: If a pair of detectors are being used to cover a large span the transmitters should be mounted back to back.</td>
</tr>
</tbody>
</table>
</div>
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