Campbell Scientific PVS4100/4120/4150 Portable Automatic Samplers - Manual (Page 46)

Section 5. Programming
5-6
DAILY CYCLE
Allows the sampler to deposit equal sample volumes into a predetermined
number of containers per programmed day. Each day may have any number of
samples taken, dependent on the SAMPLE INITIATION mode chosen.
Deposits are made to as many as 9 containers per day, to a cumulative total of
24 containers. (e.g. Choosing a 24 bottle format, the sampler may be
programmed to deposit to Three (3) bottles on any six days of the week,
together with up to Six (6) bottles on the seventh). Timing is dependent on the
crystal-controlled Real Time Clock in the controller. The first program day will
be the current day the programming is done, unless the START DELAY
option is chosen to determine when sampling will begin.
TIMED STEP (Override)
This option will cause the sample distributor to step to a new container
regardless of the status of the SAMPLE INITIATION setting. For example,
the actual sampling may be under the control of a flowmeter and taking
samples based on the flow rate as determined by pulses or 4-20mA input to the
controller. When the user-programmed Timed interval has elapsed, the
controller will Step to a new container. The Timed Step can be set for any
interval up to 99 hours 59 minutes. Progress of the step timer can be viewed by
selecting View, Program Type and pressing ENTER twice. Thus you may
view the REMAINING TIME or the step timing.
5.2 Quick Start Guide to Programming
5.2.1 Automatic Sampling Program
To begin a new, quick program:
Press “SET”
Press “NEW ENTRIES” . Press “ENTER”
START DELAY (how you will be delaying the
sample program until certain external conditions are
met). Select, using arrows, which parameter you
would like, and adjust settings (see 5.3
Programming Start Delay). Options: DISABLE;
TIME/DAY; PULSE INPUT; 4-20mA INPUT;
EXTERNAL CONTACT; LEVEL CONTROL.
Press “ENTER” twice