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2020 Software Manual
limit values (TLVs) are exceeded, you should use a gas bag for
calibration.
Calibrate the instrument as follows:
NOTE: When the dilution probe is connected to 2020, the displayed
readings are always 10% of the actual reading.
104
1. Calibrate 2020 as outlined in Calibration Using the
Flow-Match Regulator on page 70 or Calibration
Using a Gas Bag on page 73.
2. Remove the 2020 sample probe. Use the tubing
supplied with the dilution probe to connect the
dilution probe outlet to the 2020 inlet.
3. If you are using gas bags, flush and fill the gas bags
with 100 ppm isobutylene.
4. Use the hex wrench to loosen the screw in the
metering valve handle. Do not remove the hex
screw.
5. Insert the tube from the dilution probe inlet into the
adapter tubing from the flow-match regulator. If
you are using gas bags, connect the gas bag adapter
to the dilution probe inlet.
6. Ensure the calibration gas cylinder is upright and
open the regulator until the float is 1/8" from its rest
position. Do not set the flow rate too high.
7. Adjust the metering valve until the display reads
10% of the actual span gas concentration.
8. Use the hex wrench to tighten the screw and lock
the metering valve handle.
9. The dilution probe is now calibrated and ready for
use. Disconnect the adapter tubing or the gas bag
from the inlet.
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Troubleshooting
