Hanna Instruments HI 901 - Manual (Page 63)

5-23
METHODS
The signal stability window (condition) represents the time interval ∆ t during which the
potential measured in solution (mV) is confined inside the potential interval ∆ E (see the
boxes on the chart).
The new signal value is acquired if the stability condition is reached but not before the
minimum waiting time (t min wait) has elapsed.
If the t max wait time has elapsed and the stability condition is not reached, the potential is
acquired (and a new dose is added).
delta E - is the height of the signal stability window.
The range is from 0.1 to 99.9 mV.
delta t -is the width of the signal stability window.
The range is from 0.5 to 10.0 seconds.
t min wait - is the minimum elapsed time before stability check. This is also the minimum
elapsed time between two doses.
The range is from 2 seconds to t max wait time.
t max wait - is the maximum elapsed time between two successive doses. If the t max wait
has elapsed, a new dose is added even if the condition of signal stability is not
reached.
The range is from t min wait time to 180 seconds.