140 • Start Up and Normal Operation EAGLE 2 Operator’s Manual
state, the alternating numbers will be replaced by a gas reading. If the
sensor doesn’t exit its warm up state after 5 minutes, see
“Troubleshooting” on page 161.
• If using a probe, be sure to use the PID probe that does not have a particle
filter installed. If it is necessary to use a sample hose for any reason, you
must use the teflon lined hose that is supplied with the PID instrument. A
5 foot hose is supplied as standard. 10, 15, and 20 foot hoses are also
available. See the Parts List at the end of this appendix for ordering
information.
• If your EAGLE 2 is a multigas unit that is used for monitoring of
combustible gases in the %LEL range, the PID channel will indicate an
upscale reading if one of a variety of combustible gases is present. If
%LEL concentrations of one of these combustible gases is present, the
PID channel may indicate an overscale reading.
• If concentrations of methane greater than 10% LEL are present in the
monitoring environment, the PID channel’s reading will be suppressed.
• The PID sensor will also respond to H
2
S, so if H
2
S is present, the PID
channel may indicate an upscale reading depending on the concentration
present.
The standard calibration for a PID channel is to isobutylene. A PID channel
can be factory setup for and calibrated to other gases. Consult RKI
Instruments, Inc. for other available PID configurations and to specify the
desired PID configuration when a unit is ordered. The display screen below
illustrates an EAGLE 2 with a low range PID sensor installed.
It is possible to temporarily configure a PID channel for a target gas other
than the factory setting in Display Mode. See the next section, “PID Relative
Response Feature”, for instructions to use this feature.
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