20
Calibration
Full (Multiple-point) Calibration Using CalChek
This type of calibration provides
fl
ow correction across the basic operating
range of the AirChek 2000 pump (750 to 3000 ml/min) in approximately
4 minutes. The operation calibrates each
fl
ow rate to a primary standard. It
can also provide a record of calibration for maintenance and quality purposes
if DataTrac 2000 So
ft
ware is used. SKC recommends that a full calibration be
performed during pump maintenance and a
ft
er non-factory repairs.
Full calibration clears history, run time parameters, and the
Scheduler in DataTrac 2000 Software.
Do NOT place sampling media in line for full calibration. Ensure the
battery pack is completely charged before starting a full calibration.
Do not perform single-point or multiple-point calibration until the
pump has remained at ambient temperature for several hours.
1.
Use 1/4-inch tubing to connect the Defender Calibrator suction port to the
AirChek 2000 pump inlet.
Do NOT place sample medium in line.
2. Run the pump for
≥
2 minutes before starting calibration. Leave the
pump
on.
3. Follow Steps 3 through 9 from
Single-point Calibration Using CalChek
on
pages 18 and 19.
4. Verify that the ba
tt
ery icon on the pump display shows at least two bars.
If it does not, charge the ba
tt
ery before proceeding.
5. Press
S
on the pump keypad 7 times to place pump in full calibration
mode.
6. The Defender Calibrator will begin to automatically calibrate the pump.
Initial
fl
ow measurements are taken without
fl
ow from the pump and the
pump
fl
ow rate is adjusted automatically. The pump will display FCAL,
CS1, and a brief
fl
ow rate. The pump will continue to display CS2, then
a
fl
ow rate, CS3, then a
fl
ow rate, etc. until calibration is completed at all
fl
ow rates between 750 and 3000 ml/min.
Full calibration begins at
fl
ows lower than 750 ml/min. At these lower
fl
ow rates, the calibrator piston will move slowly. This is normal; do
not interrupt calibration.
CalChek full calibration can be aborted by pressing [
ST
]. The pump
will go to HOLD.
Summary of Contents for AirChek2000
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