Econox CarboProbe CP Plus Instrukcja obsługi - Strona 5

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How does the air supply affect the firing?

The right amount of air

will give the hottest flame and the fastest temperature rise. This is the most economical

heating.

Too much air

makes the flame cooler. The flow of excess air can help distribute the heat more

uniformly.

Not enough air

can still give a hot flame and can give interesting special effects in glaze colors.

Efficient fuel use

To reach the highest temperature with the least fuel, use a neutral flame. The oxygen

probe will tell you if you have a good balance of fuel and air, because the reading will be

in the range of 100mV to 200mV.

Glaze control

Some glaze colors are affected by how heavily reducing the flame is. Sometimes there is

a difference in color between a slightly reducing flame with an oxygen reading of 0.35

and a heavy reduction of 0.6. In a reducing flame, the oxygen reading is usually much

more stable and it is easy to measure the degree of reduction quite accurately. The

potter can record the reduction conditions, then obtain the same glaze colors on later

burns.

Fit the probe anywhere in the kiln or furnace where a pyrometer could be fitted. If the

probe is used at temperatures over 1100 degrees C / 2000 degrees F, put it through the

top, so the ceramic tube hangs vertically. If the probe is used horizontally at high

temperatures, it will gradually sag.

Seal the hole for the probe well enough to prevent air from flowing inwards and affecting

the oxygen reading.

When fitting or removing a probe into or out of a hot furnace, move the probe slowly to

prevent thermal shock.

Once the kiln is over 700 °C and the reference air is available, the probe is ready to use.

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