Xylem DH-21 - Manual (Page 51)

DH-21
Using the Graphical “W ATER LOG” Software 4-5
Line 5, Logging Rate:
The logging rate is a time from 1 second to 24 hours in the form of 00:00:01 to
24:00:00. This is how often the sensor will log data.
Line 6, Start Time:
The start time shows when the sensor started to log data. If no sensor is attached,
this line is not valid and NA will be displayed.
Line 7, Start Date:
The start date shows when the sensor started to log data. If no sensor is attached,
this line is not valid and NA will be displayed.
Line 8, Next Log Time:
This line shows the time when the sensor is to make the next measurement. This
will be within 24 hours. If no sensor is attached, this line is not valid and NA will
be displayed.
Line 9, Logging Count:
This line shows the number of data points logged. When the unit is reset, this will
be cleared out to 0 logs. When logging is started, this will increment each time the
sensor logs data. If logging is stopped and later restarted without going through
reset, this number will continue where it left off. If the data memory fills up and
the sensor starts overwriting old data, the log counts continue to increment even
though some of the data is no longer present. The maximum count is 10,922
counts with a 128 K bytes FLASH EEPROM installed. If a sample is taken every
hour, the “
W
ATER LOG” will store 10,922 hours worth of data. Dividing 10,922
hours by 24 provides 455 days of sampling.
Pressure / Level Window:
The Pressure / Level window is a larger numeric display of the pressure reading
converted to the desired units. This may be a raw pressure like PSI or converted to a level
like feet or inches. This window may be moved and resized.
Temperature Window:
The Temperature window is a larger numeric display of the temperature reading
converted to the desired units. This may be in Fahrenheit, Celsius, or user defined units.
This window may be moved and resized.
Message Window:
Any status or warning messages that need to be shown will be displayed in the message
window.