240 • Calibration
EAGLE 2 Operator’s Manual
Calibration
The EAGLE 2 stores calibration data for the instrument both in methane elimination mode
and in full response mode. When using the instrument for applications where methane
elimination mode is used, it is most common to calibrate to hexane. If you are planning to
use the EAGLE 2 in methane elimination mode, RKI Instruments, Inc. recommends that
you setup and calibrate the instrument to hexane in both full response and methane
elimination mode unless your application requires a different setup and calibration. See
“Configuring the Combustible Gas” on page 101 for instructions to setup the catalytic
combustible channel gas.
CAUTION:
The EAGLE 2 catalytic combustible sensor experiences a significant gas
response drop when it is changed from full response mode to methane
elimination mode. The EAGLE 2 must be calibrated in both full response
mode and in methane elimination mode to account for this.
To properly calibrate the instrument, do the following:
1. With the EAGLE 2 catalytic combustible channel set up for hexane, perform a
demand zero and a calibration while in full response. See “Chapter 4: Calibration
Mode” on page 54 for instructions.
2. Enable methane elimination in Display Mode.
3. Allow the unit to stabilize for 2 minutes.
4. Perform a demand zero and a calibration while in methane elimination mode. See
“Chapter 4: Calibration Mode” on page 54 for instructions.
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