Re: [Vo]:Making Sense of ECAT Water Pump Flow Rate

2011-10-27 Thread Jed Rothwell
Colin Hercus wrote: The manufacturers data sheet indicates it has variable rate and *variable stroke* pump and doesn't indicate that a tube can be replaced or even that it's a peristaltic pump. I believe it is a constant displacement pump, not peristaltic. Peristaltic pumps do not have

Re: [Vo]:Making Sense of ECAT Water Pump Flow Rate

2011-10-27 Thread johnpage
: [Vo]:Making Sense of ECAT Water Pump Flow Rate Colin Hercus wrote: The manufacturers data sheet indicates it has variable rate and variable stroke pump and doesn't indicate that a tube can be replaced or even that it's a peristaltic pump. I believe it is a constant displacement pump

Re: [Vo]:Making Sense of ECAT Water Pump Flow Rate

2011-10-26 Thread Colin Hercus
The manufacturers data sheet indicates it has variable rate and *variable stroke* pump and doesn't indicate that a tube can be replaced or even that it's a peristaltic pump. On Fri, Oct 21, 2011 at 2:28 AM, Alan J Fletcher a...@well.com wrote: At 10:34 PM 10/19/2011, David Roberson wrote: I

Re: [Vo]:Making Sense of ECAT Water Pump Flow Rate

2011-10-20 Thread Jed Rothwell
David Roberson wrote: An additional measurement of water consumed from the boiling point to the test completion showed a usage of 11.08 kilograms per hour (3.0 grams per second).None of the three measurements came close to the expected value based upon the rate setting.. . . This pump

Re: [Vo]:Making Sense of ECAT Water Pump Flow Rate

2011-10-20 Thread David Roberson
@eskimo.com Sent: Thu, Oct 20, 2011 10:14 am Subject: Re: [Vo]:Making Sense of ECAT Water Pump Flow Rate David Roberson wrote: An additional measurement of water consumed from the boiling point to the test completion showed a usage of 11.08 kilograms per hour (3.0 grams per second). None

Re: [Vo]:Making Sense of ECAT Water Pump Flow Rate

2011-10-20 Thread Jed Rothwell
David Roberson wrote: Further support for a lower net flow rate during the October 6 testing is given by the measurement performed by Mats near the end of the run. He very carefully measured a rate of .9 grams per second being careful not to disturb the plumbing. This value coupled with the

Re: [Vo]:Making Sense of ECAT Water Pump Flow Rate

2011-10-20 Thread David Roberson
. The truth is out there! Dave -Original Message- From: Jed Rothwell jedrothw...@gmail.com To: vortex-l vortex-l@eskimo.com Sent: Thu, Oct 20, 2011 10:57 am Subject: Re: [Vo]:Making Sense of ECAT Water Pump Flow Rate David Roberson wrote: Further support for a lower net flow rate during

Re: [Vo]:Making Sense of ECAT Water Pump Flow Rate

2011-10-20 Thread Alan J Fletcher
At 10:34 PM 10/19/2011, David Roberson wrote: I have been trying to understand the unusual behavior of the ECAT water input pump. It may be possible to replace the peristaltic tube and thus get a result which exceeds the maximum for a standard tube.