Yokogawa 2-Wire Dual Channel Transmitter/Analyzer FLXA21 - Manual (Page 122)

<9. OPERATION OF ISC (Induvtive Conductivity)>
9-10
IM 12A01A02-01E 5th Edition : Oct. 31, 2013-00
The screen displays the trend of up to 41 averages of the measurement for each time interval.
The FLXA21 samples the measurements every second. The trending graphic also shows the
maximum and minimum measured values in that interval.
For example, if the time scale is set to 4 hours, then the trend is shown for 4 hours prior to the
actual measurement. Each point on the trend line represents the average over 4Ч60Ч60/41 =
351 measurements (seconds).
NOTE
Updating the trend screen setup resets the current trend graph and starts a new one.
12.00
8.40
5.60
2.50
12:00 12:20 12:40
10.38mS/cm
Minimum
Maximum
Average
Time
Tag:
Measurement value (
mS/cm)
FLXA21-ISC Conduct1-TC1
Current process value
Max. and min. values on this display
Figure 9.8 Trend screen
The 1st display item data on the Main display is shown as a graph. Touching any point on the
display changes the display to the 2nd display item data (and to the 3rd display item data if set)
and then returns to the Main display.
12.00
8.40
5.60
2.50
12:00 12:20 12:40
10.38mS/cm
Tag: FLXA21-ISC Conduct1-TC1
12.00
8.40
5.60
2.50
12:00 12:20 12:40
25.0°C
Tag: FLXA21-ISC Temperature1
Next
20
12
4
mA
15.00
Figure 9.9 Trend graphics