SKC 210-2000 AirChek 2000 - Manual (Page 22)

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Calibration Using the CalChek Automatic Calibration Feature
The CalChek automatic calibration feature is available when calibrating
an AirChek 2000 Pump with a Defender Calibrator (Cat. No. 717-510M). A
CalChek Communication Cable (Cat. No. 210-502) is required. Optional
DataTrac 2000 Soft ware can be used to expand the documentation capabilities
of this system. The CalChek feature provides two calibration options: single-
point calibration allows sett ing and verifying a fl ow rate at a single point
before and aft er sampling. Multiple-point (full) calibration corrects fl ow to
a primary standard at multiple fl ow rates to cover the basic operational fl ow
range of the pump. Both types of calibration bring fl ow to within 5%.
If using a pump version below 2.59, a pump upgrade is required for the
CalChek feature. Contact SKC.
Do not perform single or multiple-point calibration until the
pump has remained at ambient temperature for several hours.
Single-point Calibration Using CalChek
Use this calibration method for fl ows from 1000 to 3250 ml/min. Do not use for
low fl ow calibration.
The CalChek feature provides correction at a single fl ow sett ing and takes
less than one minute to complete. Use it to set the desired fl ow rate before
sampling and to verify fl ow aft er sampling.
1. Run the pump for fi ve minutes before starting calibration. Leave the
pump on.
2. Use 1/4-inch tubing to connect the Defender Calibrator suction port to the
inlet of a representative sampling medium and the outlet of the medium
to the AirChek 2000 pump inlet.
3. Select the Defender data port:
a. Press and hold the Defender power butt on to turn on the calibrator.
b. Press the right arrow to highlight Setup; press Enter.
c. Press the right arrow to highlight Preferences; press Enter.
d. Press the down arrow to navigate to Data Port.
e. Press the left or right arrow to toggle to SKC.
f. Press the down arrow to highlight Confi rm; press Enter.
4. Enter Defender calibration mode:
a. Press the right arrow and then the down arrow to highlight Measure;
press Enter.
b. Press the right arrow to highlight Cont.; press Enter.
5. Att ach the female end of the CalChek Communication Cable to the serial
port (RS-232) on the back of the Defender Calibrator.
6. Insert the male end of the CalChek Communication Cable into the data
port on the pump.
Calibration