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7.7 Data Logging
The measurement results of data logged in chronological order at 1-minute intervals (total flow rate,
average flow rate, fluctuation coefficient, ambient pressure, pressure loss, ambient temperature,
generation of warning) can be checked by using the LV-250/40B communications cable (sold
separately) provided with the software. Note, however, that data logged in chronological order at
1-minute intervals may or may not be logged according to the ON/OFF timer settings.
* As the average flow rate and fluctuation coefficient (flow rate) measurement
values, the values calculated up to respective times from since pump operation
was started are recorded. Also, for measurement values other than warnings,
1-minute interval average values are recorded.
ON Timer Setting
ON Timer
Data is logged in chronological order at 1-minute intervals.
Manual No
Delay Time
Yes
Start Time
Yes
OFF Timer Setting
OFF Timer
Data is logged in chronological order at 1-minute intervals.
Manual No
Run Time
Yes
Stop Time
Yes
Total Volume
No
The maximum data logger time is 133 hours. Also, the maximum sampling count is 99. When the
remaining memory time that is displayed after sampling is stopped has fallen below one hour, or the
number of files displayed in the Previous Data menu has reached 99, clear memory (Clear Logs).
(
For details, see P35.)
Data that can be checked by Last Data in the main menu is saved. Note,
however, that this is not necessarily so in the case of a power fault.
7.8 Power Failure Processing
When a power failure occurs while the pump is running by a AC power supply, or the battery
voltage drops while the pump is running by the BU-24B/BU-24L (sold separately), the following
processing is executed according to the power supply fault stop setting. The power supply fault
stop setting is set to ON by default. When the pump is being driven by the BU-24B/BU-24L, set the
power supply fault stop setting to ON.
Sampling Start Standby (While ON Timer is Running)
Processing When a Power Failure Occurs During Pump Operation by AC Power
Power Supply Fault
Stop Setting
ON Timer Selection
Delay Time / Start Time
ON (Default setting)
After a recovery from a power failure, the power voltage fault is
displayed and pump operation is discontinued.
OFF
•
When the power failure is recovered before the sampling start time,
pump operation is continued.
•
When the power failure is recovered after the sampling start time has
been exceeded, an ON timer setting error is displayed and pump
operation is discontinued.
* The sampling start timer for the Delay Time setting is the time obtained by
adding the Delay Time set time to the time when the [START/STOP] key is
pressed (i.e. the time when the ON timer is started).
