Masoneilan SVI II AP Installation and Maintenance ... - GE Energy
Masoneilan SVI II AP Installation and Maintenance ... - GE Energy
Masoneilan SVI II AP Installation and Maintenance ... - GE Energy
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HART Communications<br />
with Intrinsic Safety<br />
8<br />
Overview<br />
When an <strong>SVI</strong> <strong>II</strong> <strong>AP</strong> is installed in a hazardous area in accordance with the applicable codes<br />
<strong>and</strong> st<strong>and</strong>ards for Intrinsic Safety there are wiring considerations for successful operation in<br />
addition to the requirements for safety. The choice <strong>and</strong> application of intrinsic safety barriers<br />
requires special training. For additional information, consult MTL Instruments PLC<br />
Measurement Technology Limited: www.mtl-inst.com or R.Stahl, Inc. www.rstahl.com.<br />
All installations must comply with plant st<strong>and</strong>ards <strong>and</strong> local <strong>and</strong> international electrical<br />
codes.<br />
There are three basic barrier types:<br />
Single channel zener diode barriers<br />
Dual channel zener diode barriers<br />
Active galvanic isolators<br />
To determine if the installation will perform successfully with HART communications you<br />
must consider HART filter requirements <strong>and</strong> HART barrier compliance.<br />
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