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3.5.9 Run Continuously?
3.5.10 Enter Sample Volume
Use Defined Sample
Distribution scheme with
three samples per bottle.
This Samples per Bottle feature can be combined with the
Bottles per Sample Event (section 3.5.4) to build more complex
distribution schemes, sometimes known as multiple bottle com-
positing. An example is illustrated below.
Distribution scheme with
three bottles per sample
event and three samples
per bottle. Sample events
are numbered.
Multiple Bottles Only – Sample programs can run indefinitely by
selecting YES at the RUN CONTINUOUSLY? screen. Continuous
sampling resets the distribution when the distribution sequence
is complete. That is, when the last bottle/set is reached, the next
bottle/set is the first bottle/set.
In this mode, the sampler assumes that any filled bottles are
replaced and ready to receive samples while the program is
running, thus the pacing interval is never interrupted.
If you select NO, the sampler will run until it completes the dis-
tribution sequence, at which time it stops the program and
reports PROGRAM DONE. The sampler will wait in this state
until the bottles have been emptied and the program is restarted.
If your sampler is configured for composite sampling, refer to
section 3.5.16 for instructions on continuous sampling.
At this screen you have the option to enter a sample volume
(factory default is 200 ml) or use a manually defined sample
volume based on pump counts.
If you choose ENTER SAMPLE VOLUME, the programming dis-
plays will step through a series of screens that let you enter the
sample volume. When running a program, the sampler will use
these settings and vary the sample collection cycle to deliver the
entered sample volume at any suction head height.
To view or change the entered sample volume, use the Next or
Previous button to select ENTER SAMPLE VOLUME. Then, press
the Enter button to advance to the next screen (section 3.5.12).
If you choose USE DEFINED SAMPLE, the sample collection cycle
is always a fixed number of pump counts. This option can be ben-
eficial when collecting samples from pressurized lines whenever
exceptional sampling conditions make it difficult to detect liquids
and collect accurate sample volumes. To USE DEFINED SAMPLE,
press the Next or Previous button to select this option. Then,
press the Enter button.
Isco 4700 Refrigerated Sampler
Section 3 Programming
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