Teledyne 3700, Installation And Operation Manual

Page: 39 / 242

3700 Portable Samplers
Section 3 Programming Guidelines
3-5
Figure 3-2 Samples-Per-Bottle Multiplexing
Bottles-Per-Sample Multiplexing – I n b o t t l e s - p e r- s a m p l e
multiplexing, you fill a programmed number of bottles at each
sample event. (The programmed number of bottles is a bottle set;
as many as 24 bottles can be used.) Bottles-per-sample multi-
plexing is useful when you need a sample that exceeds the
capacity of your bottles. It is also useful when you need sets of
identical samples; for example, when using more than one pre-
servative.
When you use bottles-per-sample multiplexing, you modify the
normal sampling cycle (relocate distributor, pre-sample purge,
sample delivery, post-sample purge) by delaying the complete
post-sample purge until sample volumes have been delivered to
each bottle of the set. Instead, the pump reverses until the
pump
tubing is purged just beyond the liquid detector. When the
purged liquid passes the detector, the distributor moves to the
next bottle, and the pump begins pumping forward to deliver the
next sample. This repeats until each bottle of the set is filled. A
full post-sample purge is completed at the end of the sample
event. The sampler then pauses until the next sample event
occurs, at which time the cycle repeats for the following bottle
set. Figure
3-3 illustrates bottles-per-sample multiplexing.
Figure 3-3 Bottles-Per-Sample Multiplexing
3
4
5
6
7
8
1
2
Bottle Number (8 of 24 Bottles Shown)
1
2 3 4 5 6 7 8
Sample Event Number
1 1 2 2 3 3 4 4
Bottle Number (8 of 24 Bottles Shown)
1
2 3 4 5 6 7 8
Sample Event Number