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CQO:1010PVXFM-3 Section 5
To send Datalogger contents to the RS-232 Serial Port:
Check the flow computer-to-external device connections and your RS-232 Setup
parameters (see paragraph 5.10.9 RS-232 Setup).
To access the [Output Datalogger] option list press
Scroll the cursor to [Yes] by pressing
To transmit Datalogger contents to external device via the serial port press
To stop printout press
Circular Memory
In its default mode, the Datalogger collects data until its memory becomes full. At that time the flowme-
ter suspends data logging and cannot resume until the datalogger memory is cleared (see Clear Data-
logger command). Multi-Channel systems include Circular Memory and Single Channel systems do not.
Circular Memory allows the Datalogger to ”‘write over” its oldest records when memory reaches full
capacity. If you enable Circular Memory, you are assured of always collecting the most recent data. But,
also remember that you will lose the oldest Datalogger reports. Note further that invoking Circular Memory
deletes the current contents of the Datalogger and pre-allocates a substantial amount of memory for
this function, removing it from site storage memory.
NOTE: To avoid potential data loss, the flowmeter prevents you from altering the Circular Memory
setting when a channel is active.
To setup and enable Circular Memory:
The Datalogger Mode menu must have the [Memory] menu cell selected.
Datalogger items must be selected (e.g., Site ID, Date, Time, etc.).
In the Datalogger Control menu, select [Circular Memory].
Press to access the [Circular Memory] option list.
Move the cursor to [Yes] by pressing
To store selection press
Lastly, re-enable the channels that you disabled earlier to begin logging.
Est Log Time Left
Est Log Time Left is a “view-only” menu cell that shows an estimate of the amount of Datalogger time
remaining in hours and minutes. This menu cell becomes active after you enable datalogging. Selecting
Circular Memory and/or event-based datalogging (see Datalogger Setup), blanks the field [Est Log Time
Left] and is based on the log interval and data selections made in the Datalogger Setup. For Single-
Channel flowmeters, this time is an estimated minimum since data compression is employed for im-
proved storage efficiency.
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