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Antony Jacob Ashish
Engineering,
Planys Technologies Pvt. Ltd., India, Joined Jun 2015, 1

Antony Jacob Ashish

Engineering,
Planys Technologies Pvt. Ltd.,
India,
Joined Jun 2015
1
13:15 Jan-12-2018
Reg. Ultrasonic transducers-explosion proof

Belated new year wishes to the forum!

The Objective: I am interested in developing/ procuring immersion ultrasonic transducers (depth > 30 m) for zone 0 hazardous environment.

Further description: An array of immersion ultrasonic transducers (depth rated for 30 m) are needed to be developed for the application. They will be controlled from a remote location. Other electronics including a multi-channel pulser-receiver are enclosed in a separate explosion-proof enclosure. I have approached various OEMs including Cygnus (they have individual probes with display gauges-not suitable for remote operation applications) and have been turned down.

What are your recommendations? Are you any other OEMs which manufacture such transducers?

Can any commercially-available ultrasonic transducer (for example, Panametrics V102) be explosion-proofed using any particular methodology?

Thanks in advance!

 
 Reply 
 
Joe Buckley
Consultant, ASNT L-III, Honorary Secretary of BINDT
Level X NDT, BINDT, United Kingdom, Joined Oct 1999, 528

Joe Buckley

Consultant, ASNT L-III, Honorary Secretary of BINDT
Level X NDT, BINDT,
United Kingdom,
Joined Oct 1999
528
13:54 Jan-12-2018
Re: Reg. Ultrasonic transducers-explosion proof
In Reply to Antony Jacob Ashish at 13:15 Jan-12-2018 (Opening).

Antony

The normal practical requirements for explosion proofing of transducers (as against the equipment) consist of:

1. Reliably grounded external casing and transducer lower face
2. integral cable - its when disconnecting that problems occur.
3. Sufficiently robust /protected to avoid risk of damage which might make them unsafe.

None of this is difficult. Its the approval / certification paperwork that is.

Normally when creating explosion proof equipment it will be tested / certified with a limited range of transducers.

Adding specials tends to be expensive, so is strongly resisted by most manufacturers

2
 
 Reply 
 
Phil Harper
Director, Tribosonics
Tribosonics Ltd, United Kingdom, Joined Feb 2004, 10

Phil Harper

Director, Tribosonics
Tribosonics Ltd,
United Kingdom,
Joined Feb 2004
10
17:02 Jan-12-2018
Re: Reg. Ultrasonic transducers-explosion proof
In Reply to Antony Jacob Ashish at 13:15 Jan-12-2018 (Opening).

Hi Antony,

It is non-trivial to do ultrasonic inspections/measurements in an intrinsically safe environment.

At Tribosonics we've taken transducers and ultrasonic monitoring systems through certification both with ATEX certification (Zone 1 instrumentation, Zone 0 transducer) and UL (again Zone 1 instrumentation, Zone 0 transducer). We've also taken other equipment through the Class/Div route with UL. Non of this is quick or low cost but we can manufacture to these standards. We may have something off the shelf that you could consider. Take a look at www.tribosonics.com and you can contact us via the contact form.

Best regards,

Phil Harper

Founder and CEO, Tribosonics Ltd.

1
 
 Reply 
 

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