RKI Instruments Eagle 1 Manual - Manual (Page 68)

61 • Appendix C: Non-Standard Toxic Gas Sensors Eagle Instruction Manual
reading on the third line of the screen. The sensor connected to
EC4
on the analog PCB displays its reading on the fourth line of
the screen.
4. Adjust the sensor’s SPAN control one turn and observe the
display reading. Continue to adjust the SPAN control until the
display reading matches the concentration of the calibration
cylinder.
The SPAN control is located next to the sensor on the side closest
to the front of the instrument.
5. Press the POWER/ENTER button to set the span value. SINGLE
CALIBRATION END displays, then the Single Calibration menu
displays.
6. Place the top of the case in its original position, then secure it with
the large screws you loosened in step 2.
7. Disconnect the tubing from the probe, then unscrew the regulator
from the calibration cylinder.
8. 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.
9. Press the POWER/ENTER button to return to the Calibration
menu.
10. 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.
NOTE: If a non-standard toxics channel displays Zero Fail after the
Demand Zero procedure, adjust the ZERO control (next to
SPAN) until the reading displays the smallest increment
above 0.0. For example, 0.01 or 0.1. Repeat Demand Zero.
Replacing Non-Standard Toxic Gas Sensors
Replace the non-standard toxic gas sensor when:
• The toxic gas channel cannot be calibrated correctly.
• The toxic gas reading cannot be set to zero by the Demand Zero
command or zero potentiometer.
NOTE: RKI Instruments, Inc. recommends that you return the Eagle
for replacement of the non-standard toxic gas sensor. The
following procedure is provided to allow you to replace the
sensor if necessary.