SKC AirChek ESSENTIAL Operating Instructions Manual page 9

Calibrate Pump Flow Rate with the All-in-One (single tube)
1.
Using a small flat-head screwdriver, turn the flow adjust screw on the port clockwise to decrease flow or
counterclockwise to increase flow until the method-specified flow rate is indicated on the calibrator.
2.
Once flow is calibrated for the tube, it is recommended practice to recheck the flow rate before removing the
tube. Any adjustment should be minimal.
3.
Disconnect the pump from the representative sampling medium and calibrator. Proceed to Sampling.
Calibrate Pump Flow Rate with the Dual, Tri, or Quad Adjustable Low Flow Tube Holder
•
See appropriate adjustable low flow holder instructions.
1.
Using a small flat-head screwdriver, turn the flow adjust screw on the first active port clockwise to
decrease flow or counterclockwise to increase flow until the method-specified flow rate is indicated on the
calibrator.
2.
Remove calibrator tubing from the current tube and install it on the next active tube. Use a small flat-head
screwdriver to turn counterclockwise the brass flow adjust screw directly beneath the port holding the tube to
be calibrated and repeat Step 1.
3.
Repeat Steps 1 and 2 for each remaining active tube.
4.
Once flow is calibrated for the tube, it is recommended practice to recheck the flow rate before removing the
tube. Any adjustment should be minimal.
5.
Disconnect the pump from the representative sampling medium and calibrator. Proceed to Sampling.
Sampling
•
Allow pump to equilibrate after moving it from one temperature extreme to another.
•
Charge pump battery completely before calibration and sampling.
•
Use of any device (including charging cradle) or battery pack other than P75718 to power the pump voids
intrinsic safety certifications and any warranty.
•
Pump can be operated from cradle.
•
If using sample tubes as media, calibrate/verify pump flow rate before and after each sampling operation
using the tube holder and pump used for
sampling.
1.
After setting/calibrating flow rate, replace
representative media with new, unexposed media
for sample collection.
2.
Set up the sampling train. See Figure 6.
3.
Touch the PUMP key on the screen touch
keypad to start sampling. Note: To lock screen
during sampling, press pump on/off button (see
Options/Modes during Sampling below).
4.
Touch the PUMP key to stop sampling. Record
run time and any other pertinent information. The
elapsed time will flash on the screen.
5.
Remove sample medium and cap it. Reinstall
representative sample medium and perform post-
sampling calibration. See Setting/Calibrating
Flow Rate.
skcinc.com
Sample medium
Form 37165 Rev 200217
Tubing
Pump inlet
Figure 6. Sampling Train (high flow)
Page 9