
6.3 Trace mode
The feature of the trace mode is the record duration which can be set by the user (range from
three minutes, up to four weeks). The trend graphic records the measurements in the past T time. The
trend is recorded by the 60 group structure. Hence, each group of units is recorded in T/60 time
interval. The trend line is constructed by all value data which is calculated to the average (Mean
Value), maximum (Max Value) and minimum (Min Value) form. When the latest T/60 record shows
in the rightmost of the trend graphic, all the previous record will be moved to the left side of the
graphic. For example, T is set to 60 hours, then each set of records will be calculated to the average,
the maximum, the minimum values after one hour(T/60 = 1), each time interval. Timeline of trends
which is divided into 12 depictions showed on the horizontal axis of the display is on behalf of each
characterization interval T/12. So, every depiction has 5 (T/60) sets of records. Users can set the
corresponding pH / ORP measuring range in its set-up menu(see section 7.4). The smaller the range is
set, the higher resolution of the display is. The trace mode is shown as below. There are also real-time
measurement value, & unit, and temperature value & unit which are displayed in the bottom of the
screen.
Attention:
When the time interval has been reset, the trend in the data will not be retained, it will
start a new trace record.
Note:
The time display format (XX: XX) (hr: min), for example, appear as four weeks (672:00).
T/12
Trend recording interval
Whole Time(60 data record sets)
Upper limit
Lower limit
The max. value of the
T/60 interval
The min. value of the
T/60 interval
The mean value of
the T/60 interval
The latest set of record
shown on the right sector
Record duration(T),
the negative sign is to
mean the record time
has past
Main measurement
value & unit
Temperature value & unit
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