VICI 500 Dynacalibrator - Manual (Page 26)


Analyzer Calibration
After the power-up procedure has been completed and the chamber temp-
erature and permeation device have reached equilibrium, the Dynacalibrator is
ready to be connected to the analyzer being calibrated. Use a minimum length
of tubing for the connection, and make sure none of the calibrator’s vents are
blocked.
1. Place the Dynacalibrator in the ZERO mode.
2. Connect its stream outlet to the input of the analyzer. Make sure that the
total flow of zero air (as indicated by the dilution flowmeter alone) exceeds
the suction rate of (all) the analyzer(s) being calibrated.
3. Adjust both dilution flow control valves to the pre-calculated span points,
making sure as always that the total calibrator output flow exceeds the
suction rate (total of the suction rates) of the analyzer(s) being calibrated.
Align the centers of the floats in the flowmeters to the selected scale readings.
Allow the analyzer reading to stabilize at the zero point (usually about ten
minutes) before calibrating or recording the reading.
4. Switch to the SPAN 1 and SPAN 2 modes, checking the dilution flow setting
and allowing the analyzer sufficient stabilization time at each point.
If the Dynacalibrator will be operated remotely, perform the above procedure
one time manually before switching to the REMOTE mode. Also, a remote timer-
sequencer must be adjusted for sufficient analyzer stabilization time at each
calibration point.