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60 Model 7500 Instruction Manual
Teledyne Analytical Instruments
6.9.2 Span calibration
It is used to perform a span point adjustment. Supply
calibration gas with concentration set to the span value
to perform the span calibration. For the span calibration
gas for the SO2, CO2, CO, H4 measurement, use the
standard gas with a concentration of 90% or more of
the range value. For the calibration gas for the O2
measurement, use the standard gas of about 2 vol%.
1. Press the SPAN key on the Measurement screen to
display the Manual Span Calibration screen.
2. Press the UP or DOWN key to select CH (component)
to be calibrated. After selection, press the ENT key, and
the span calibration contact output on corresponding to
CH is turned ON. And supply span gas.
CAUTION
When Range Interlock from “Calibration Range” of
the Calibration Setting mode is set, span calibration is
performed together with 2 Ranges.
3. Wait until the indication is stabilized in the state where
the calibration gas is supplied. After the indication has
been stabilized, press the ENT key. Span calibration of
Range selected by the cursor is performed.
To close Span Calibration
To close the “ Span Calibration “ or cancel this mode
midway, press the ESC key. A previous screen will
return.