UEi EAGLE C125 User manual

SENSOR CALIBRATION & REPLACEMENT QUICK STARTGUIDE .
C125 & C127 SENSOR CALIBRATION & REPLACEMENT
QUICK START GUIDE
Calibration Instructions;
Note: Disclaimer of Liability
These instructions are prepared for use by trade professionals familiar with gas analysis and detection,
and are familiar or have experience in calibrating gas measurement systems. They are intended to be
as complete and simple as possible to eliminate the chance for error. Certain factors related to analyzer
field recalibration are beyond the control of UEi, and the user should be aware of these factors such as
proper delivery of gas to the analyzer during calibration, the age of the calibration gas, and the accura-
cy of the calibration gas.
By using these instructions to recalibrate your instrument, you assume all risks and liability associated
with the measurement of carbon monoxide (CO) gas concentrations.
Indemnification
To the extent permitted by applicable law, by using these instructions to recalibrate your analyzer, you
agree to defend, indemnify, and hold harmless, UEi, its agencies, officers, employees, representatives,
and agents from and against all claims and expenses, including attorneys’ fees, arising out of the use of
this material. 99 Washington Street
Melrose, MA 02176
Phone [phone]
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com

6. Separate the case by gently
pressing up on the front
housing with pulling the top
apart.
7. Lift the main circuit board up
and away from the instrument. a. Be careful of the wiring
harness that powers the pump
and connects to the battery
compartment.
8. Place the instrument on a flat
surface with the circuit board
positioned as shown.
9. Remove the four screws
holding the sensor cover
in place.
10. Remove the sensor cover. 11. Lift the sensor to be replaced
out of the manifold.
a. Sensor located at the top is
O2, and the bottom
position is CO.
5. Remove the two screws
securing the case halves
together.
4. Remove the batteries.
1. Tools required to replace the
sensor include a standard
Phillips screw driver and a
source of calibration gas.
2. Remove the protective boot
from the instrument. 3. Remove the water trap by
sliding down and then away
from the housing.
SENSOR REPLACEMENT

14. Set circuit board back on
manifold.
a. Align sensor pins with sockets
on circuit board.
14. Join case halves together
starting at the bottom edge as
shown
15. Reinstall case screws
12. Install the sensor to be
replaced. 13. Reinstall sensor cover.
a. Verify that the sensor cover
is seated on the manifold
before tightening screws.
b. Note the position of the
alignment pin on the O2
and pin orientation on the
CO sensors. These will only
fit into the sensor cover in
one position.

GAS CALIBRATION
COPYRIGHT © 2007 UEi. EAGLE Combustion Analyzers™ is a trademark of UEi. CALKIT-MAN 11/07
7. Connect Gas. 8. Adjust regulator to match flow
of instrument.
a. Floating ball should be in
the middle of the second
space from the bottom.
b. Note the pitch of the pump.
It should match the pitch
when drawing in ambient
air.
9. Allow to sample gas three
minutes.
a. Reading does not indicate
ppm value.
b. Slight fluctuation of display
is normal.
10. Press “Enter” at the end of
3 minutes.
Note reading is not ppm,
and may still fluxuate slightly.
11. Scroll to “Exit” and then
press “Enter”.
4. Enter user code “1234”.
6. Enter gas concentration.
5. Select “Cal_CO”.
1. Turn instrument on in fresh air
and allow to zero.
It is recommended to allow the sensors to stabilize a minimum of four hours before calibration.
2. Select “Menu”. 3. Scroll to “Service”.
99 Washington Street
Melrose, MA 02176
Phone [phone]
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com