700M HFID 6-2-15
49
Zero
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Zero calibration should be performed before a span calibration. From the Manual
Calibration menu press to access the Manual Zero Calibration screen.
Make sure the analyzer is in the range you wish to calibrate. Use the Up/Down arrows
to go to the desired range. The screen illustration above shows the range (R1) next to the
maximum range limit (30.00 ppm).
In the upper-right corner of the screen, you will see a status line that indicates how the
calibration gas is being introduced into the analyzer. In this case, Cal via Valves is displayed.
The other option is Cal via Pump. See Calibration Setup for details.
Introduce zero gas into the rear of the analyzer. Press to go to the Diagnostic Values screen
to view the current diagnostic values. Check the temperatures and pressures to be sure they are
within their limits. If all diagnostic values are within their limits, press the button to return
to the Manual Zero Calibration screen.
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