RKI Instruments Eagle Series - Manual (Page 55)

50 • Calibration Diffusion Eagle Instruction Manual
5. With the Eagle and Remote Detector properly set up for calibration (see
“Preparing for Calibration” on page 46), screw the regulator onto the
calibration cylinder to begin a flow of gas at 1.0 liters per minute. Let the
gas flow for 90 seconds.
NOTE: The combustible gas sensor is a general hydrocarbon sensor that
responds to most flammable vapors and gases; the response will
vary depending upon the substance. For best results, calibrate the
Eagle to the target gas or vapor.
6. If necessary, use the AIR/ ▲ (increase) and SHIFT/ ▼ (decrease) buttons to
adjust the reading to match the concentration listed on the calibration
cylinder.
7. Press the POWER/ENTER button to set the span value. SINGLE
CALIBRATION END displays, then the Single Calibration menu
displays.
8. Unscrew the regulator from the cylinder.
9. Repeat steps 3 through 8 for any other channels you want to calibrate.
Make sure you use an appropriate calibration cylinder for each channel.
CAUTION: When calibrating the oxygen channel, verify the
concentration of oxygen listed on the cylinder’s label. For
oxygen-free samples (100% nitrogen for example), set the
oxygen setting to 0.0%.
10. After the last channel is calibrated, unscrew the regulator from the
cylinder, remove the calibration cup from the Remote Detector, then
remove the clear tubing from the regulator and from the calibration cup.
11. With the Single Calibration menu displayed, press the SHIFT/ ▼ button
until the prompt is next to the last channel, then press the SHIFT/ ▼
button again. The ESCAPE message displays.
12. Press the POWER/ENTER button to return to the Calibration menu.
13. Press the SHIFT/ ▼ button to place the prompt next to the NORMAL
OPERATION menu option, then press the POWER/ENTER button to
return to the normal screen.