×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Thermocuple installed in Class II (Zone 2) hazardous area

Thermocuple installed in Class II (Zone 2) hazardous area

Thermocuple installed in Class II (Zone 2) hazardous area

(OP)
Hi All
Does any one know if there are any requirments for certification or spacial installation when installing RTD and Thermocuple installed in Class II  (Zone 2) hazardous area
Regards to all

RE: Thermocuple installed in Class II (Zone 2) hazardous area

Hi,

For a zone 2 area there aren't any requirements for certification etc for tc's and rtd's.
However, if you are installing an amplifier in the loop then it may be best to mount the amplifier outside the zone or if that's not possible then install a barrier.

RE: Thermocuple installed in Class II (Zone 2) hazardous area

with intrusive fittings such as a thermowell, it depends on your temperature class and the fluids being handled.

  

RE: Thermocuple installed in Class II (Zone 2) hazardous area

Here in Canada, the entire assembly has to be CSA approved for area into which it will be installed. That is the sensor itself, connection head, nipple and thermowell. So simply using anyone's thermocouple or RTD in a Hazardous rated head will not give you a CSA approved assembly. There are a few manufacturers who do make a Class II amplifier or "hockey puck" that are in them selves Class II approved by UL and CSA. This allow you to mount them in the sensor head and maintain the area approvals.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources