Campbell Scientific PVS4100/4120/4150 Portable Automatic Samplers - Manual (Page 43)

Section 5. Programming
5-3
TABLE 5-1. Touchpad Button Descriptions
Button Description
The RESTART key is used to load any new parameters into the operating program. Pressing it
twice will initialize the program and terminate any existing sample program. Any parameters
altered under the SET command are updated to the active program. If no parameters have been
changed, the program is reset to its first instruction and the same sampler program is started again.
This key requires a confirming second activation to complete its function. WARNING: Any
program in progress is ended and all data is lost.
SAMPLES TAKEN [VIEW]. The total number of samples taken can be shown on the display.
REMAINING PULSES [VIEW]. In modes using internal or external pulse counting, the current
status of the pulse count can be displayed.
REMAINING TIME [VIEW]. Various views are available dependent on the method used to
gather samples. Program variables will determine whether the displayed time is REMAINING
TIME, ELAPSED TIME or START DELAY.
START DELAY [VIEW/SET]. The start of a sample program can be made to occur at a fixed time
or event. Options: DISABLE, TIME/DAY, PULSE INPUT, 4-20mA INPUT, EXTERNAL
CONTACT, LEVEL CONTROL.
SAMPLE INITIATION [VIEW/SET]. A sample program may be initiated and controlled by
various internal and external parameters. These parameters determine how the program will begin
its actions and how the results will be recorded. Options: DISABLE, INTERVAL TIME, PULSE
INPUT, 4-20mA INPUT, EXTERNAL CONTACT.
PROGRAM TYPE [VIEW/SET]. A sample program can be made to collect samples in a fixed
style so that the results are useable in different ways. The type of program used may be hardware
dependent. This will determine the sampler’s ability to collect and store the desired samples.
Options: COMPOSITE, DAILY CYCLE, CONSECUTIVE, MULTI-COMPOSITE, TIMED
STEP.
ACTIVE SETTINGS [VIEW]. Current sample program parameters can be reviewed by scrolling
through them using the ENTER key as a toggle.
NEW ENTRIES [SET]. Program all major program settings at once (including START DELAY,
SAMPLE INITIATION, PROGRAM TYPE, and PURGE TIME).
[VIEW]. Review parameters that have been changed since the sample program was started (only if
the changes have been properly ENTERED). Scroll through them using the ENTER key as a
toggle.
OTHER OPTIONS [VIEW/SET]. Various options relating to equipment and information retrieval
are available under this key. Changes in equipment setup can be entered here, and certain status
information is also available here. Options: CLOCK, PURGE TIME, PINCH VALVE, FAULT
SHUTDOWN, SAMPLER STATUS, CYCLES ABANDONED, BOTTLE POSITION,
MAINTENANCE.