[USMA:45323] RE: Yellow Jacket

2009-07-09 Thread Martin Vlietstra
The Brits are as bad when it comes to anything foreign. Some years ago I sent a stylized version of http://www.grahamdavies.net/node/247 around the office. The response was two people rolling with laughter and thirty looking at it blankly. _ From: owner-u...@colostate.edu

[USMA:45324] RE: Yellow Jacket

2009-07-09 Thread John Frewen-Lord
Martin _ I remember this 'notice' from many (around 30) years ago (when I lived in Canada). I had completely forgotten it! Thanks for reminding me of it. I think all of us where I worked at the time (Canadian Institute of Steel Construction) had a good laugh when it was taped to the wall

[USMA:45325] Re: Yellow Jacket

2009-07-09 Thread Pierre Abbat
On Wednesday 08 July 2009 16:58:27 Michael Payne wrote: http://www.yellowjacket.com/images/A_Maniflds/Brute-II-C-hose.jpg Yellow Jacket is a company that makes equipment for servicing Air Conditioning equipment, both Home and Auto. The A/C guy was around my house and I noticed the guage had

[USMA:45326] Re: Yellow Jacket

2009-07-09 Thread John Frewen-Lord
I've just seen this picture for the first time. If you look closely at the bottom right of each gauge, it looks as if the outer pressure scales are marked MPa? Hard to see, the picture is not sufficiently hi-res. If this is true, then the original email received my Michael may just have

[USMA:45327] Re: Yellow Jacket

2009-07-09 Thread John M. Steele
We may have already won.   Check out this link.  (You may have to click on a + and a More info box to get it to open fully): http://www.yellowjacket.com/HVACRProducts.asp?t=HVACRl=5c=34p=322   A more detailed photo in the .pdf spec sheet makes me think it is a pressure gauge (the blue covers

[USMA:45328] Re: Yellow Jacket

2009-07-09 Thread Michael Payne
I'll admit their web site pictures are not the best. From recollection, the gauge was primarily psi and kg/cm2 with a separate Fahrenheit and Celsius scale. I cannot remember a fifth scale. It seems pressure in an Air Conditioning system is tied to the ambient temperature and hence the

[USMA:45330] Vacuum display

2009-07-09 Thread Michael Payne
I was under the impression SI pressure in Pascal's was always positive. Earth pressure near 100 kPa, Mars pressure near 20 kPa, outer space near 0 Pa. Is this correct. I see the gauge from Yellow Jacket has an area listing a minus side. Mike Payne

[USMA:45331] RE: Vacuum display

2009-07-09 Thread brian
Man, that sucks. ;) Sorry, couldn't resist. Original Message Subject: [USMA:45330] Vacuum display From: Michael Payne metricm...@verizon.net Date: Thu, July 09, 2009 12:53 pm To: U.S. Metric Association usma@colostate.edu I was under the impression SI pressure in Pascal's

[USMA:45332] Paul Trusten--change in my telephone service

2009-07-09 Thread Paul Trusten
Everyone, This is just to let you know of a change in my telephone service. (432)694-6208 HAS BEEN DISCONNECTED (FORMERLY MY HOME LAND LINE). PLEASE REMOVE THIS NUMBER FROM YOUR RECORDS. MY TELEPHONE NUMBERS ARE: CELL PHONE: +1(432)528-7724 (BEST WAY TO REACH ME) HOME FAX:

[USMA:45334] Re: Vacuum display

2009-07-09 Thread John M. Steele
I have never noticed anything in the SI Brochure or NIST SP330 requiring pressure to be stated on an absolute basis vs gauge.  Obviously the other side is atmospheric pressure.   Since proper procedure is to purge the a/c system to a vacuum and refill with refrigerant, absolute pressure might

[USMA:45333] RE: Vacuum display

2009-07-09 Thread Martin Vlietstra
Without going back to the picture, differential pressure gauge are common in industry - 0 Pa indicates that the pressure on both sides are equal, a negative pressure indicates that the pressure on the left hand side (whatever is meant by that) is greater and a positive pressure indicates that the

[USMA:45335] Tesla

2009-07-09 Thread Pat Naughtin
Dear All, You, like me, might know of the unit, tesla (T), but know little about the man. This short movie might help. http://www.youtube.com/watch?v=gt8Y93k0pB0 Cheers, Pat Naughtin Author of the forthcoming book, Metrication Leaders Guide. PO Box 305 Belmont 3216, Geelong, Australia

[USMA:45336] idea for flyers

2009-07-09 Thread Pierre Abbat
Charlotte has a growing number of Latino immigrants. I'm thinking of passing out flyers like this: ¿Viniendo a este país, estaba perplejo por estrañas unidades, tales como pies, libras, y millas? ¿Desea que sus niños crezcan a ser buenos en ciencias y matemáticas? Unase a la U.S. Metric