Zero Cal
Zero Cal should be run the first time the instrument is used and should be
repeated prior to every use. Zero Cal requires that the zero filter be attached
prior to running.
Never perform a zero cal without attaching a zero filter.
1. Press Zero Cal Button
2. Attach Zero Filter
3. Press the Start button to start Zeroing process.
4. A count-down clock will appear indicating the time remaining. The
screen with indicate “Zero Cal Complete” when done.
Remove filter after zeroing has been completed. The instrument is now zero
calibrated and ready for use.