Thermo Scientific APEX 100, Руководство пользователя

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Page 160
Thermo Scientific APEX User’s Guide
Frequency and Gain—Page 1
When testing products, setting the appropriate frequency and gain settings will
maximize the detector’s ability to detect metallic contaminants.
Choosing the Optimal Settings for Frequency and Gain
When testing any product for the presence of metallic contaminants, it is best to run the
detector at high frequency (300 KHz) and high gain, because this combination gives the
best sensitivity. However, if your product has a significant product effect, as shown by
the flashing of the red indicator light on the detector’s control panel when product
passes through the search head, using the high-frequency and low-gain setting will
likely remedy the situation—because the low-gain setting cuts the signal produced by
the product by a factor of 4.5.
If the high frequency/low gain setting still causes saturation, move to the low
frequency/high gain setting, and so on.
Frequency Gain Ability to detect contaminants
300 KHz—High High Excellent
300 KHz—High Low Very good
100 KHz—Low High Good
100 KHz—Low Low Fairly good
Accessing the Frequency and Gain Menu
To access the frequency and gain menu, do the following.
1)
From the Main Menu, use the navigation buttons to select the frequency and gain
menu.
Frequency and Gain
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