7.0 CALIBRATION
7.1 Entering and Using Calibration Mode
From the "MAIN IDLE DISPLAY" press the "Setup" key once until the message below
appears;
Select FLOW RATE
Target Q... xx.yLpm
(See Section 6.4 to select a new target Flow Rate.)
From the "Select FLOW RATE" message screen you must press both the "Reset" key and
the "Run/Stop" key simultaneously to enter the calibration mode and the message below
will appear;
CALIBRATE Target=qq.qLpm
where;
qq.q = Target Flow Rate to be Calibrated
CAUTION: BE CAREFUL WHEN USING CALIBRATION MODE. IT IS NOT USED
TO CHECK CALIBRATION FLOW RATE. INCORRECT USE CAN ERASE A
PREVIOUSLY STORED CALIBRATION. IF YOU SIMPLY WISH TO CHECK THE
FLOW RATE ACCURACY FOR THE SELECTED TARGET, GO TO THE MAIN
IDLE DISPLAY AND PRESS "RUN/STOP". BE CERTAIN THAT THE START
DATE ENABLE IS SET TO "OFF" (SECTION 6.9).
This mode is used to Calibrate the PQ100 at a target flow rate. It should be noted here
that each individual target has it's own independent calibration storage area and is
non-volatile. That means that each and every flow rate from 1.0 LPM to 25.0 LPM can
have its own discrete tolerances without approximation and will remain programmed in
the instrument even in the event of total battery discharge. Pump speed values are also
stored with the calibration data.
Assuming that a typical filter for a target was in place at the time of the calibration, the
filter load is compensated for causing the pump to initialize to the proper speed. Once a
target has been calibrated it should never have to be re-calibrated unless extreme
conditions are expected.
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