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Operation 7
HP289
3.1.2 Starting a Batch
To start the process the RUN key is pressed. The Run LED will light
and the instrument will begin to totalize from zero or, if programmed to
count down, the display will decrement from the batch quantity.
The batcher has two control relays which are energized and de-
energized as described in Section 3.2.
3.1.3 Stopping
The process can be stopped at any time by pressing the STOP key.
Once the process has been interrupted in this way, it can be continued
by pressing the RUN key or the process can be aborted and the
instrument reset by pressing the STOP key a second time.
When the process is interrupted, the STOP LED will flash to prompt
the operator to either restart or abort the batch.
3.1.4 Resetting
The instrument can be configured to reset in one of two ways.
• At the end of a batch, the STOP key must be pressed to reset
the Batch Total. If the instrument is configured to count
down, the Batch Total will then reset to the preset quantity. If
it is configured to count up, the Batch Total will clear to zero.
• If Auto Reset is configured on, the Batch Total will
automatically reset when the RUN key is pressed to start the
next batch.
3.1.5 Displayed Information
The display will normally show the Batch Total which is the total count
for the current batch and is reset on each new batch.
The DISPLAY key can be used to display the following additional
information:
Rate
On the first press of the DISPLAY key, the display shows RATE
for one second followed by the flowrate.