Section 3: C ontrols and Adjustm ents
Airmetrics
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assigned "On Time" value, and the on time for each pulse is determined by the
sum of the values of switches in the "off" position. The "On Time" values for each
switch are as follows:
SW-1 = 50 ms
SW-2 = 100 ms
SW-3 = 200 ms
SW-4 = 400 ms
For Example: If SW-1, and SW-4 are in the "off" position, the solenoid on time
for each pulse w ould be 450 m illiseconds. (50 + 400 ms = 450 ms).
The D OW N positio n is "on" fo r these sw itches. Th e fine adju stment n ext to this
control adds an extra 50 ms to the total pulse time (fully counterclockwise - adds
50 ms, fully clock wise - adds no time).
P
OWER
O
N
/O
FF
Switch 5 on this DIP switch is the on/off power switch for the auxiliary board, and
must be set to the "o n" position for any fun ctions to be active. Th e UP p osition is
"on" for this switch, the opposite of the other dip switches.
P
ULSE
I
NDICATOR
The Pulse Indicator flashes when the system is pulsing.
O
VERLAP
J
UMPER
With the Overlap Jum per installed, and solenoid valves plugged into output ports 2
& 4, both valves are energized when the sequencing circuit advances to position #3
(LEDs for positions #2,3,4 are all on at this time). This allows for programming a
sampling period when both bags are filling simultaneously.
Airmetrics MiniVol Users Guide
20
Airmetrics
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