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3700 Portable Samplers
Section 3 Programming Guidelines
When installing the master/slave pair, you must press the
START
key on both machines to place both machines in the
SAMPLING
run state. The first machine started becomes the master. After
the master completes its routine, it can be serviced and started
again. The master/slave cycle will halt if both samplers have fin-
ished their routines and have not been serviced and restarted.
The samplers cannot reverse roles unless both are in the run
state. (Display #320)
Sample Upon Disable – When you are using a flow meter or
Liquid Level Actuator, "SAMPLE UPON DISABLE?" allows you
to direct the sampler to take a sample as soon as you disable the
sampler through pin F.
A response of "YES" causes the sampler to take a sample when
the pin is disabled; a response of "NO" prevents the sampler from
taking a sample. (Display #321)
The sampler determines an enable or disable condition by moni-
toring the voltage on pin F. It interprets high voltage as an
enable signal and low voltage or ground as a disable signal.
Sample Upon Enable – When you are using a flow meter or
Liquid Level Actuator, "SAMPLE UPON ENABLE?" allows you
to direct the sampler to take a sample as soon as the sampler is
enabled through pin F. A response of "YES" causes the sampler to
take a sample when the pin is enabled. A response of "NO" pre-
vents the sampler from taking a sample when the pin is enabled.
(Display #322)
Reset Sample Interval – "Reset Sample Interval?" controls the
time- or flow-pulse countdown. If you select "YES," a full sample
interval begins when pin F is enabled. If you select "NO," the
interval will not be reset when the sampler is enabled; the set-
tings entered in the "INHIBIT COUNTDOWN?" option will be
used. If you are sampling on a time-paced basis and wish to syn-
chronize all sampling with real time, do not reset the sample
interval. (Display #323)
Inhibit Countdown – " I N H I B I T C O U N T D O W N ? " i s o n l y
applicable when you respond "NO" to "RESET SAMPLE
INTERVAL?" The Inhibit Countdown option controls the
countdown while the sampler is disabled. Select "YES" to freeze
the countdown to the next sample. The count will resume when
the sampler is enabled. Select "NO" to allow the countdown to
continue while the sampler is disabled. (Display #324)
A sampler that has been inhibited while running a routine will
move to the next bottle set when enabled, if at least one sample
volume has been deposited in the current bottle set. This is true
for both time-switched and count-switched routines, and for
bottles sets composed of one or more bottles.
A sampler that has been inhibited while running a time-switched
routine will advance to the next bottle or bottle set, regardless of
the number of time-switches that elapse while the sampler is
inhibited.
3-49
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