146 • Maintenance
EAGLE 2 Operator’s Manual
Maintenance
The PID sensor includes user serviceable parts. They are the lamp and the electrode stack.
The following sections include troubleshooting instructions as well as procedures for
cleaning the lamp, replacing the lamp, replacing the electrode stack, and replacing the PID
sensor.
Troubleshooting
The troubleshooting table describes symptoms, probable causes, and recommended action
for problems you may encounter with the PID sensor.
Cleaning the PID Sensor’s Lamp
Clean the lamp if you notice a significant drop in sensitivity from one scheduled
calibration to another or if you are not able to calibrate the PID channel. See the “PID
EAGLE 2 Spare Parts” on page 162 for lamp cleaning kit ordering information. The lamp
cleaning kit includes the following items:
•
an electrode stack removal tool
•
a small vial of aluminum oxide powder
•
40 cotton swabs
•
10 finger cots
Perform the following procedure to clean the PID lamp:
1. Verify that the EAGLE 2 is off.
Symptoms
Probable Causes
Recommended Action
• PID channel
doesn’t exit its
warm up state and
the reading
continues to scroll
through -200, -100,
and 0 for a high
range sensor and
-2.00, -1.00, and
0.00 for a low
range sensor.
• The PID sensor has not
come out of its warm up
state.
1. Clean the lamp.
2. Replace the lamp.
3. Replace the electrode stack.
4. If the difficulties continue, contact
RKI Instruments, Inc. for further
instruction.
• The PID sensor
fails to calibrate.
• The auto calibration
values may not match the
cylinder gas concentration
(auto calibration only).
• The sample gas is not
reaching the sensor
because of a bad
connection.
• The calibration cylinder
may be out of gas or is
outdated.
• The lamp may need to be
cleaned.
• The electrode stack may
need to be replaced.
1. Make sure the EAGLE 2 has
been properly set up for
calibration.
2. Check all calibration tubing for
leaks or for any bad connections.
3. Verify that the calibration cylinder
contains an adequate supply of
sample.
4. Clean the lamp.
5. Replace the electrode stack.
6. If the difficulties continue, contact
RKI Instruments, Inc. for further
instruction.
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