Xylem DH-21 - Manual (Page 20)

3-2 Using the “W ATER LOG” Software
DH-21
The screen of the computer is updated every 5 seconds with the logger time, date and data.
When the W
ATER GEN program is running, it issues a command to the “ W ATER LOG” telling it
to provide the information displayed on the next screen update. When connected to the
“
W
ATER LOG” and running the W ATER GEN TM program, the “ W
ATER LOG” will change to a
continuous operating-power mode from the low-power mode to be able to respond to commands
from the computer. This continuous operation shortens battery life and should not be used for
long periods in the field unless you are willing to replace the battery more frequently. However,
an external 12 volt power source can be connected via the RS-232 communications connector to
elevate power drain on internal lithium battery.
The “WaterLOG” Serial # T2000 Version 1.1
Status = OFF (LINEAR) Last Measurement Units
Date/Time = 01/01/95 12:00:19
Date Started = 01/01/95 14:39:00 PRESSURE = 0.0000 PSI
Logging Rate = 00:01:00 TEMPERATURE = 0.00 Deg C
Next Log Time = 00:00:00
Memory Used = 100.0 %
Logging Count = 10921 Scans
Battery = 6.8 Volts
1) Run 4) Time/Date 7) User Notes 10) Measure Data
2) Off 5) Logging Mode 8) Extract Data 11) Zero Sensor
3) Reset 6) Coefficients 9) View Data 12) Sensor Info
13) Diagnostics
Enter Option: 1 Esc-Exit
Figure 3-1. Master Menu Screen
Figure 3-1 shows the master menu screen. This screen is divided into five sections. The
function of each section is described as follows:
The top window shows the serial number of the “ W ATER LOG” device along with the version
number of the PC software.
The upper left section shows the STATUS or MODE of operation for the “ W
ATER LOG”. There
are three basic modes of operation: RESET, RUN, and OFF. The next line shows the current
date and time as maintained by the clock circuitry in the “
W
ATER LOG”. Also shown is the date
and time the “ W
ATER LOG” started the current logging session. The Logging Rate indicates the
time interval between data samples. The maximum interval allowed is 24 hours. The Next Log
Time indicates the time of day when the next sample will be taken if the “
W
ATER LOG” is
operating in the RUN mode.