16
Instruction Manual
SECTION 3 - OPERATION
3.3.2 Calibrating the Displayed Flow (AD2, AD8)
The Roytronic Excel Pumps are equipped
to display a theoretical flow rate based upon
the pump’s stroke speed and stroke length.
These calculations are based upon factory test
conditions which may be significantly different
from your application. It is necessary for the user
to perform the following calibration procedure when
the pump is connected to your system, and using
the actual chemical. This one-point calibration
procedure will greatly improve the accuracy of
the pump’s calculated flow. The closer the pump’s
stroke length is to the typical use stroke length, the
more accurate the result. We recommend using the
approximate settings determined in section 3.3.1
as a starting point for calibration.
D
column
V
observed
D
tube
Do not let
water level
drop below
top of weight
1. Prepare a flow measuring device such as a
graduated cylinder or a scale sensitive to
a gram.
2. Ensure the pump is primed following the
procedures in 3.2.
3. Put the pump into Internal Mode and use the
Power Button to turn the pump off.
4. Hold the Up Button and Down Button in
at the same time for 8 seconds until ‘CAL’ is
displayed on the LCD Display, then release
the buttons. Note ‘FLO’ will be displayed first.
Continue to press the buttons until ‘CAL’ is
displayed.
5. Push the Power Button and release until
a “0” is displayed.
6. Note the reading on the calibration device.
If using a graduated cylinder note the starting
liquid level. If using a scale note the displayed
weight, or reset the scale’s display to zero.
7. Push the Power Button and release to start
the pump. Notice that the display will count the
total number of strokes. (The screen will show
SPH).
8. Allow the pump to run; the accuracy will improve
with more strokes. Use the Power Button
to stop the pump. The number of strokes will
be displayed up to 999 strokes. If you will be
pacing the pump externally, note the number
of strokes.
9. Press and release the Power Button again.
This will display the pump’s estimated volume
pumped in mL. (The screen will show ml/h).
Figure 13
