Calibrate Zero; Calibrate O 3 Coefficient - Thermo Scientific 49i Instruction Manual

Operation
Calibration Menu
CALIBRATION:
>CAL ZERO
CAL O3 COEF
ZERO/SPAN CHECK
RANGE

Calibrate Zero

Calibrate O Coefficient
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3-22 Model 49i Instruction Manual
In the Main Menu, choose Calibration.
AVG DIAGS ALARM
The Calibrate Zero screen is used to perform a zero calibration. Be sure the
analyzer samples zero air until the readings stabilize.
It is important to note the averaging time when calibrating. The longer the
averaging time, the more precise the calibration will be. For the most precise
calibration, use the 300-second averaging time. For more information about
calibration, see Chapter 4, "Calibration".
• In the Main Menu, choose Calibration > Calibrate Zero.
• Press
O3 BACKGROUND:
CURRENTLY:
RANGE
The Calibrate O
while sampling span gas of known concentrations. The display shows the
current range. The next line of the display is where the calibration gas
concentration is entered. In dual or auto range modes, "High" or "Low" is
displayed to indicate the calibration of the high or low coefficient.
CALIBRATION:
>CAL ZERO
CAL O3 HI COEF
CAL O3 LO COEF
RANGE
to set the new reading to zero.
O3: 4.4
0.0 ?
SET O3 TO ZERO
AVG DIAGS ALARM
Coefficient screen is used to adjust the O
3
AVG DIAGS ALARM
coefficient
3
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