6700 Portable Sampler User Manual - Isco

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Delayed Start Screen
NO DELAY TO START
DELAYED START
CLOCK TIME
Select DELAYED START.
FIRST SAMPLE
AFTER A
___MINUTE DELAY
(1-999)
Enterthenumberofminutes
to delay the countdown
to the first sample.
START FLOW COUNT
AFTER A
__MINUTE DELAY
(1-999)
The sampler uses this
screen for flow paced
programs.
Clock Start Time Menu
NO DELAY TO START
DELAYED START
CLOCK TIME
Select CLOCK TIME.
FIRST SAMPLE AT
06:00
Enterthetimeofday.
SELECT DAYS:
SU MO TU WE TH FR SA
DONE
Press an arrow key until
the cursor is on the
correct day. Press↵
(Enter).
Repeat until each day
you want is blinking.
Press an arrow until
DONE blinks. Press ↵
(Enter).
FIRST VALID DAY
IS20–JAN
Enterthefirstvalidday.
Theexampleaboveis
entered as 20↵ (Enter)
01↵ (Enter).
6700 SAMPLERS
Select NO DELAY TO START when you want the sampler to
start as soon as you select RUN.
Select DELAYED START when you want the sampler to delay
from 1 to 999 minutes before starting the program.
Select CLOCK TIME when you want the sampler to begin the
program at a specific time on at least one day of the week.
Clock times also require a First Valid Day. The First Valid Day
setting allows you to start a program on a calendar date up to
ayearinadvance.
How Do Start Times Work?
As soon as you select RUN from the start up menu, the sampler
checks the program’s start time settings. With a “DELAYED
START” setting, the sampler starts a countdown to the start
time. The period between the time you select RUN and the start
time you’ve specified in the program is called the “delay to start
time.”
When you run a program with “CLOCK TIME” settings, the sampler
also starts a countdown to start time while it waits for the
programmed first valid date. The sampler continues to count
down until the day of week and clock times are met. Sampling
starts when all three settings have been met.
The sampler may not collect a sample at the start time (see Pacing
on page 82). The sampler must be enabled, and the pacing
selected must call for a sample at start. In any event, the sampler
checks the pacing settings and begins the pacing-interval
countdown.
Sampler Enable
The sampler disregards both disable and enable signals during
the delay to start time. However, when the sampler detects a disable
signal at the start time, it suspends the program until it is
enabled. Once enabled, the sampler collects a sample only when
programmedtotakeasampleattheenabletime.Thediagramin
Figure 22 shows the sampler’s response when enabled or disabled
at the start time.
In some complex applications, you may want to enable the sampler
with both a flow meter and a module. If so, remember that
the enable conditions detected by the flow meter and the module
must both be present at the same time, before the sampler
becomes enabled.
Two Part Programs
Available in extended programming, two part programming lets
you divide a sampling program into two parts. The program has a
single start time, shared by each part. A sampler running a two
part program responds to start time settings in the same way that
it responds to the start time settings for a single part program.
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