RE: acoustic telemetry using pipeline

From: <Steve>
Date: Thu Mar 31 2005 - 00:08:00 EST

Oh yes
lots of dolphins here.
Don’t need a level transmitter; a switch if OK. But I have no line of sight and don’t want to add repeaters to give me line of sight for radio telemetry. Regs do not permit using long wave and sat is out of the question for a cheap system. I'm looking for a cheap coms link, and the idea of sound down the pipe came to mind. Might have a look at sending pulses down the power lines instead.

Cheers

Steve

-----Original Message-----
From: Pankaj.Mandal@fluor.com [mailto:Pankaj.Mandal@fluor.com] Sent: Thursday, March 31, 2005 4:42 PM
To: PipingDesign@yahoogroups.com
Subject: RE: [PipingDesign] acoustic telemetry using pipeline

Steve,

You have dolphins in New Zealand too ! I thought you only deal with
sheep !!

Please keep us updated with your finds. This is really interesting. However, depending upon the criticality of the system (whether spillage is
absolutely prohibited), I would still prefer to go with the conventional

level transmitter approach.

Pankaj.

"Steve McKenzie" <Mechproj@xtra.co.nz>
03/31/05 10:00 AM
Please respond to PipingDesign 

         To:     <PipingDesign@yahoogroups.com>
         cc:
         Subject:        RE: [PipingDesign] acoustic telemetry using
pipeline
.

Hi Pankaj Mandal

thank you for your useful contribution.
We have tried this, unsuccessfully. The requirement is for the acoustic waves to travel through the water, and the people keep drowning. The budget will not extend to provision of underwater breathing apparatus. Have tried using dolphins, but the Greenpeace people keep letting them go.

Cheers

Steve

-----Original Message-----
From: Pankaj.Mandal@fluor.com [mailto:Pankaj.Mandal@fluor.com] Sent: Thursday, March 31, 2005 4:05 PM
To: PipingDesign@yahoogroups.com
Subject: RE: [PipingDesign] acoustic telemetry using pipeline

Steve,

Station a person at the top of the hill near the tank and one more near the pump. Ask the former to shout at the top of his voice when the tank is full so that the later can switch off the pump. Simple isn't it.

One word of caution: make sure neither of them are deaf or dumb.

Cheers,
Pankaj Mandal.

"Steve McKenzie" <Mechproj@xtra.co.nz>
03/31/05 05:21 AM
Please respond to PipingDesign 

         To:     <PipingDesign@yahoogroups.com>
         cc:
         Subject:        RE: [PipingDesign] acoustic telemetry using
pipeline
.

Hi Al
don't go to any trouble; was just wondering if there is something off the shelf that someone knows of.

Cheers

Steve

-----Original Message-----
From: aluser2 [mailto:alwynk@shaw.ca]
Sent: Thursday, March 31, 2005 12:02 PM
To: PipingDesign@yahoogroups.com
Subject: Re: [PipingDesign] acoustic telemetry using pipeline

try russell tech or their gurus at queens

>
>
> Gents+2
> I have an application with a pd pump at the bottom of a hill feeding a

> tank at the top. When the tank is full I want the pump to stop. Would
> prefer a level switch in the tank in this case, rather than a float
> valve/restrictor at tank, pressure switch/accumulator at pump. There
> is no line of sight so simple telemetry is out and I do not want to
run
> a wire.
> Was wondering is anyone makes an acoustic transmitter and receiver so
I
> can sent a sound signal down the pipe through the water from the tank
> to the pump.
>
> Any leads would be appreciated.
>
> Cheers
>
> Steve


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Received on Thu Mar 31 00:08:00 2005

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