Category Archives: White Papers

How to calculate an Intrinsically Safe loop approval; including the impact of using Ex ic (Zone 2) and gas group on cable lengths. Revised & updated Dec 2020

We all know what can happen when the correct techniques are not used when interfacingRead more

Intrinsic Safety: How does a Zener barrier work? Updated Jan 2021

For an explosion, all three of gas/dust, oxygen and source of ignition (spark or heat)Read more

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Making Safe Waves (Wireless) in Hazardous Areas

As wireless devices such as mobile phones and laptop computers become more reliable and costRead more

Intrinsic Safety – Part 3 – impact of Gas Group on loop approval and cable lengths.

Further to my previous articles: How to calculate an intrinsically safe loop approval (http://www.instrumentation.co.za/7571a) andRead more

Intrinsic Safety for zone 2 (Exic) and using longer cable runs.

Further to my previous article on calculating an Intrinsically Safe loop approval (http://www.instrumentation.co.za/7571a ), weRead more

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Ex ic Intrinsic Safety’s New Protection Level

Synopsis The protection of electrical apparatus for use in flammable atmospheres is embracing a newRead more