Xylem DH-21 - Manual (Page 35)

DH-21
Using the “W ATER LOG” Software 3-17
3.2.6 Run Option
There are three basic modes of operation of the “ W ATER LOG”. Up to now the “ W ATER LOG”
has been operating in the RESET mode. The other two modes of operation are RUN and OFF.
In the RUN mode of operation, the “
W ATER LOG” will make a measurement at an interval set
by the Logging Option specified in option 5. The data from the samples will be stored in the
FLASH EEPROM in the “
W
ATER LOG”. The “ W
ATER LOG” will enter a low-power mode of
operation to conserve battery power during the wait times. You can cause the “ W
ATER LOG” to
enter the RUN mode by selecting option 1 as shown in Figure 3-12. You will be asked to verify
the selection to prevent inadvertent operation. With the “
W
ATER LOG” in the RUN mode, you
can disconnect the interface cable to the sensor and it will continue to operate in the run mode
until manually disabled or battery power is lost. The batteries are designed to operate the unit for
up to five years depending on the sample rate.
The WaterLOG Serial # T2000 Version 1.1
Status = RESET (VARIABLE) Last Measurement Units
Date/Time = 02/28/95 03:57:35
Date Started = 01/01/95 14:39:00 PRESSURE = 0.0000 PSI
Logging Rate = 00:00:05 TEMPERATURE = 0.00 Deg F
Next Log Time = 00:00:00
Memory Used = 0.0 %
Logging Count = 0 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
Run
This will start the sensor logging.
Continue? y (y/n)
Esc-Exit
Figure 3-12. Run Option
A very useful feature in the “ W
ATER LOG” Run Option, is the ability to specify a start time.
This feature will allow you to manually select a start time in the next 24 hours. This may be used
to start the logging process at midnight or some other desired time.