17
Instruction Manual
10. Use the Up and Down Buttons to match
the displayed volume to the measured volume.
If using a graduated cylinder, the presence of
the tubing will cause the measurement to be
slightly higher than actual. The measurement
should be adjusted using the formulas shown
below. If using a scale, the number of grams
can be divided by the specific gravity of
your chemical to determine the number of
mL pumped. If the pump will be controlled
externally, the output volume per stroke can
be determined by dividing the measured output
by the number of strokes.
11. Once the displayed value has been adjusted,
hold and release the Power Button to return
the pump to internal mode.
V
Actual
= V
Observed
* R
where
R = 1- ( D
Tubes
/D
Column
)
2
For accuracy, it is important that the water level
does not drop below the top of the ceramic foot
valve weight.
Note:
If you will be using the pump at a different
stroke length, or pressure, the pump should be
recalibrated under those conditions using the
procedure above to ensure accuracy.
3.4 METHODS OF EXTERNALLY
TRIGGERING OR PACING AD8 AND
AD9 PUMPS
Method of Triggering AD8 and AD9 Pumps
through External Control Connector.
Switch or transistors must be capable of switching
24V DC at 15 milliamperes. Minimum time in
low impedance state (ON) is 25 milliseconds.
Minimum time in high impedance state (OFF) is
50 milliseconds.
The remote on/off input (using pins 1 and 2) is
active in all modes. In the out-of-box configuration,
the pump will run when contacts are open.
The pump is monitoring these pins for a change in
closure condition. Regardless of the pump being
on or off, when the contacts close, then the pump
will turn on. When the contacts open, the pump
will turn off.
The Power Button overrides the remote on/off
and can still be used to turn the pump on and off.
If the contacts are closed when the on/off button
is pressed, the pump will turn off. To restart the
pump remotely, the contacts must be opened and
then closed again.
These pumps have two operating modes:
Local (Pulse Indicator Light flashes green) and
Remote (Pulse Indicator Light flashes yellow).
Pressing the Mode Selection Button switches
between Local and Remote modes. The default
configuration for operating mode is Local mode.
SECTION 3 - OPERATION
