Intrinsically Safe equipment but still creating sparks?!
Intrinsically Safe equipment but still creating sparks?!
(OP)
Hi all,
Here on a drilling rig we use some pressure sensor which is 4-20mA and Intrinsically Safe (IS). Everything is grounded properly... However, one day we observed that some sparks were generated when the sensor cable touch a metal part of another equipment. We are wondering from where could this spark generated?
Any ideas would be appreciated.
Thank,
Toan,
Here on a drilling rig we use some pressure sensor which is 4-20mA and Intrinsically Safe (IS). Everything is grounded properly... However, one day we observed that some sparks were generated when the sensor cable touch a metal part of another equipment. We are wondering from where could this spark generated?
Any ideas would be appreciated.
Thank,
Toan,





RE: Intrinsically Safe equipment but still creating sparks?!
If it ain't broke, don't fix it. If it's not safe ... make it that way.
RE: Intrinsically Safe equipment but still creating sparks?!
RE: Intrinsically Safe equipment but still creating sparks?!
Excerpt from Rosemount 3051 manual, as an example of "requires proper installation":
Intrinsic safety Ex ia protection type
• Pressure transmitter with ia type protection shall operate with
a certified intrinsic safety power supply only.
• Closing of entries in the device must be carried out using the
appropriate Exe or Exn metal cable gland and metal blanking
plug or any appropriate ATEX approved cable gland and
blanking plug with IP66 rating certified by an EU approved
certification body.
• Pressure transmitter with intrinsic safety type protection is not
valid if it is not connected to an intrinsic safety circuit.