C-Bus Forums  

Go Back   C-Bus Forums > General > General Discussion

The C-Bus Community Forums is place where C-Bus users can share information and help others with C-Bus. From time to time you will see Clipsal staff on the forums, but this is not an official support channel. If you really need help contact the official support services of Clipsal. More information about the purpose of this forum is available here.

Thread Tools Display Modes
Old 12 Aug 17, 10:00 PM
znelbok's Avatar
znelbok znelbok is offline
Senior Member
Join Date: Aug 2004
Posts: 1,004

A photo would help heaps in trying to come up with a solution.

If you can use a simple contact to detect the flag or change over you don't need a certified device (no IECEx or AusEx certificate) but in every case you WILL require a barrier (either a Zener of isolated transformer) which does need a certificate. (this is an Exi - Intrinsically safe install)

An explosion proof switch would also work (also needs to be certified). This would be an Exd install

Other methods also exist such as encapsulation, specials and other.

Understanding the gas class and zoning and method of protection is not a simple task.

AS3000 calls the hazardous area standards so they are law as well - but just like any electrical install you can take any shortcut you like at your own risk. (I don't advocate doing this unsafely)

Hope that helps understanding of some of what is involved in doing this simple task.

Reply With Quote
Old 20 Aug 17, 06:51 PM
Matthew's Avatar
Matthew Matthew is offline
Senior Member
Join Date: Oct 2007
Location: Adelaide
Posts: 212

I like the Temp sensor idea.
In terms of compliance, C-Bus voltage would be ELV, is it SELV?
If the Bus coupler was outside the exclusion zone, then only the Temp sensor probes are inside the "gas" zone. The sensors have a 2m tail on them, not sure of the voltage, but AFAIK these are only a few volts.
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT +10.5. The time now is 06:03 AM.

Powered by vBulletin® Version 3.7.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.