Calibrating The Speed Filter Using A Ferrous Test Stick - Thermo Scientific APEX 100 User Manual

Calibrating the Speed Filter Using a Ferrous Test Stick

In this section you will learn how to calibrate the speed filter using a ferrous test stick.
The speed filter is a narrow-band pass filter that rejects most background noise, but still
allows a maximum metal signal from the search head to be processed by the detector.
1) Follow steps 1–4 in the "Choosing Your Preferred Units of Measure" section on
page 22 to get to the menu shown below—page 2 of the system and tools menu.
System and Tools Page 2
2) Press the right-navigation button to select the speed filter menu.
Speed Filter
3) Press the Go button and the calibrate-filter menu appears.
Calibrate Speed Filter
4) Start up the conveyor and have the ferrous test stick ready. (If you are wearing a
watch, ring, and so on and plan on catching the test stick as it exits the search head,
now would be a good time to take them off, so they do not interfere with the search
head.)
Page 50 Thermo Scientific APEX User's Guide