Page 4 - Shimadzu GC-8A

Column Oven

Large-capacity, cubic oven Rapid heating and cooling
characteristics
Almost cubic in shape, the column oven opens entirely at the
front, making changing columns simple and easy. The column
Rapid heating and cooling characteristics of the column oven
oven's door opens and closes by a simple one-touch operation.
are also important for a gas chromatograph. Fig. 4 shows that
The lightweight door moves extremely smoothly.
heating from 100°C to 350°C requires just 12 minutes, while
cooling takes less than one minute and re-stabilizing at the
initial temperature takes about three minutes.

Fig. 1 Column Oven

Two-stage overheat prevention Fig. 4 Heating and Cooling Curve
for protection of columns Digital temperature programmer

If the temperature exceeds the programmed (preset) All GC-8AP series instruments incorporate an internal
temperature by 30°C, the heater will be automatically turned temperature controller for digital temperature settings.
off. If the temperature reaches about 420°C, the heater will be
automatically turned off.

Temperature control offers
excellent stability and response

Fig. 5 Digital Temperature Programmer
Excellent temperature control of the column oven is essential
for a gas chromatograph. Fig. 2 shows the response and stability
when the column oven's temperature setting is changed from
100°C to 101°C. It shows that the oven responds rapidly to a
changed temperature setting and is able to immediately achieve
stable temperature control.

Fig. 2 Temperature Stability

Fig. 3 Operation of Column Oven Door

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