Calibrate a meter to read ppm, NOT EC
Since I believe a ppm meter does not exist, you will wonder why I thought
of a way to calibrate a non existent meter.
No mater if you have an EC, PWT, TDS or ....... one that has ppm indications,
Calibrate the meter with a known ppm solution. forget EC,
Ideally, you would have a CS solution of know ppm, if possible. And
it is possible.
One can make a know ppm solution easily, a pint, a quart or whatever.
Not CS, but many other materials.
The value is calculated using known ppm calculations.
Not hard at all, Tenth grade math, if you can weigh the material.
If this can be accomplished, the meter will read true ppm, as
accurate as is possible with the meter
due to all the factors that effect the reading.
I realize some meters will not calibrate properly, no matter what.
For example, the 1 to 1999 Hanna meter would read 500 or 1000 with a specific
CS solution ( or a solution you make of other material )
Then, you would have a divide scale factor, not a multiply scale factor.
1000 divided by 100 would be 10 for a ppm reading of 10.
Simple indeed. Some people can do this math mentally.
If we can make this work, it would be justification for buying a
better meter, not the cheapest one around.
I expect that few meters will read the exact value,
10 = 10 ppm
19 = 19 ppm
I have a dual range EC meter that might work half decent.
I realize many have not ever used or heard about a "Divide Scale Factor".
These can be called conversion factors, multipliers, or divider,
whatever you wish.
My control / data logging program uses multiply scale factors, divide
scale factors, or a scale factor of one. Not a ZERO. If you input
a zero, the program stops, and will not run.
It is rare to have a scale factor of 1. a few times I have seen it happen.
I built a liquid measuring device from scratch.
1.5 volts, analog was 1.5 ounces, and 3.5 volts was 3.5
ounces. Almost like magic.
It did in fact empty and refill automatically, as often as I wanted
it to do so.
Tons of fun, to say the least.
Maybe someone will tell me why the True PPM calibration will not work.
This method does not mean the readout will be correct without
conversion, but it will be
ppm, not EC.
I fully realize that some will not be able to do it or understand it fully.
But, if we can make it work, there will be step by step instructions
to simplify it greatly.
A few things concern me, the fact that some say the ppm of CS
changes, after a time.
That will be addressed also, .......... no doubt.
Wayne
=====================
--
The Silver List is a moderated forum for discussing Colloidal Silver.
Instructions for unsubscribing are posted at: http://silverlist.org
To post, address your message to: [email protected]
Address Off-Topic messages to: [email protected]
The Silver List and Off Topic List archives are currently down...
List maintainer: Mike Devour <[email protected]>
