SKC AirChek2000, Operating Instructions Manual

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18
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 So
ft ware can be used to expand the documentation capabilities
of this system. The CalChek feature provides two calibration options: single-
point calibration allows se
tt ing and verifying a fl ow rate at a single point
before and a ft 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-point or multiple-point calibration until the
pump has remained at ambient temperature for several hours.
Single-point Calibration Using CalChek
The CalChek feature provides correction at a single fl ow se tt 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 a ft er sampling.
1. 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.
2. Run the pump for ≥ 2 minutes before starting calibration. Leave the
pump on.
3. Select the Defender data port:
a. Press and hold the Defender power bu tt 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 le ft or right arrow to toggle to SKC .
f. Press the down arrow to highlight Con fi 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. A tt ach the female end of the CalChek Communication Cable to the serial
port (RS-232) on the back of the Defender Calibrator.
Calibration