iandol on thu 24 aug 00
Yes Garret,
You have read that an Oxy Probe will not tell you anything about the =
quantity or quality of reducing gases in you kiln atomosphere. So an =
absence of oxygen may mean that the rest is nitrogen, water vapour and =
carbon dioxide.
Having read the literature and thought about the usefullness of this =
device I came to the conclusion that you only knew you would get the =
result you wished for if the present reading corresponded with a =
previous reading from a firing which gave you the results you required.
Ivor Lewis.
Jonathan Kaplan on fri 25 aug 00
Ivor:
>
>You have read that an Oxy Probe will not tell you anything about the =
>quantity or quality of reducing gases in you kiln atomosphere. So an =
>absence of oxygen may mean that the rest is nitrogen, water vapour and =
>carbon dioxide.
Correct and there has been much information surfacing lately about the
importance in water vapor in the reduction process.
>Having read the literature and thought about the usefullness of this =
>device I came to the conclusion that you only knew you would get the =
>result you wished for if the present reading corresponded with a =
>previous reading from a firing which gave you the results you required.
Again, exactly correct. The potter's oxygen probe is a valuable reference
tool when used consistently in one's own kiln and firing procedures. While
we can swap probe readings, it is really irrelevant. My numbers are a
reference point for me and for training my staff to fire in ways that
produce predictable results. There are too many other variables from kiln
to kiln, potter to potter, firing to firing, that influence the quality of
the wares produced.
I have enjoyed the level of intelligence your posts bring to the list.
Best,
Jonthan
Jonathan Kaplan, president
Ceramic Design Group
PO Box 775112
Steamboat Springs CO 80477
voice and fax 970 879-9139
jonathan@csn,net
http://www.sni.net/ceramicdesigin
Plant Location:
1280 13th Street Unit 13
Steamboat Springs CO 80487
(please use this address for all deliveries via UPS, comman carrier, FEd
Ex, etc.)
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