Campbell Scientific CVS4200 / BVS4300 Stationary Samplers - Manual (Page 54)

CVS4200 / BVS4300 Stationary Samplers
The sampler controller can react to an
external dry contact, otherwise known as a
zero-voltage contact, to activate a sample
cycle on demand. This will generally be
when external conditions have caused a
relay to close, whose contact will cause a
sample to be taken.
7.6.5.2 SAMPLE INITIATION using Interval Time
The following sequence of entries are made
on the Touchpad to form a basic operating
parameter for operation of the sampler. This
will determine the time from the start of a
sample cycle to the start of the next sample
cycle. No time is lost during the actual
sample cycle. The ACTIVE SETTINGS are
not being altered.
1. Press the SET key.
2. Press the SAMPLE INITIATION key.
3. Press an ARROW key. Continue until
Interval Time is shown on the display.
4. Press the ENTER key.
When setting the time, a flashing digit
prompts for input from a numeric key. To
set the time, press a numeric key to enter a
value and advance to each digit in
succession. The format is HHH:MM. The
minimum time can be set to 1 minute;
however, practical considerations, such as
equipment duty cycle, maintenance and
service life, suggest times of 3 minutes or
longer.
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