A TDS meter. www.tdsmeter.com Model TDS-4. I do not remember where I purchased it, but it was on-line, and I think from an aquarium supply company. It is made by a company called HM digital. They also make a model TDS-4TM which I think has a thermometer in it. It can be calibrated if you can find a calibration solution. All the calibration solutions I saw were at a much higher level of TDS than what I am measuring, and I did not think that would be worthwhile, so I have never calibrated it. For the purposes I am using the meter, I do not think high accuracy is necessary.
Allen -------------------------------------------------- From: "TWG" <[EMAIL PROTECTED]> Sent: Monday, October 06, 2008 5:53 AM To: "Brewtus" <[email protected]> Subject: Re: Toggle Power Switch > > How do you measure TDS? > > On Oct 5, 3:06 pm, "Allen Worrall" <[EMAIL PROTECTED]> wrote: >> I work the same way. My timer is an Intermatic Heavy Duty Model TN311 or >> maybe it is Model TN3II. It is a mechanical timer and works well. I also >> rarely use the red on-off switch on the front of the machine. As Ray >> said, I turn it off when I go on vacation, but I also use it when I >> partially drain my steam boiler, which I do once a week on Sunday >> morning. In addition to the Cafiza blind portafilter treatment, I turn >> off the red switch, run about 200-300 cc of boiling water out of the hot >> water valve of the machine, then turn the red switch on and allow the >> pump to pump new water into the steam boiler. >> >> I do this of course to try to keep the TDS (Total Dissolved Solids) in >> the steam boiler low, to minimize scaling. I put distilled water into my >> water reservoir, and add just a little tap water to make the TDS reading >> about 10-20 PPM. I find that is enough to allow the sensor in the steam >> boiler to work. This morning the TDS reading of the water I removed from >> the steam boiler was 110 PPM (I allow it to cool before I measure the >> TDS). My tap water is 250-275 PPM TDS. >> >> Allen >> >> From: Ray Sachs >> Sent: Sunday, October 05, 2008 9:01 AM >> To: [email protected] >> Subject: Re: Toggle Power Switch >> >> If that timer is on backorder, the are plenty of other good ones out >> there. I'm not sure what make my timer is, but its been working >> flawlessly for a couple of years now. Those things aren't exactly rocket >> science these days. Most wristwatches are more complicated. Every day the >> machine is on and warmed up when I come downstairs to make the first >> shots. It either turns off by itself at 1 pm or I turn it off manually >> sooner. The only time I touch the on-off switch on the espresso machine >> is when we're leaving town for a day or few or longer. Then I flip it off >> so the timer won't turn it on everyday while we're gone. Otherwise, I >> never hit that switch. >> >> -Ray >> >> On Sun, Oct 5, 2008 at 1:18 AM, mpsadeghi <[EMAIL PROTECTED]> wrote: >> >> Thanks for the informative reply and for the advice, Brewtus Maximus! >> This is great! Seems like the right way to go so I took you up on >> your recommendation and ordered the intermatic. They're on back order >> but I'll let you know how it goes when i get it set up. I hadn't read >> the reviews about the melting red rocker switches and am now thankful >> that i have my simple switch...which heck, isn't so bad to look at >> after all. And i do agree, especially after today's maiden voyage, >> simpler interface is better. By the way, the maiden voyage was so fun >> and rewarding once I got things dialed in. Coming from a little, putt- >> putt Francis Francis, when I pulled the lever up on my Brew2, it was >> like turning the lights on to a vast, new world! Ha! Again, I >> appreciate the guidance and insight! >> >> buzzing from all the test pulls, >> >> Marc > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Brewtus" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/brewtus?hl=en -~----------~----~----~----~------~----~------~--~---
