RKI Instruments EAGLE 2 Manual - Manual (Page 262)

252 • Overview EAGLE 2 Operator’s Manual
Appendix I: Infrared Hydrocarbon Sensor
Overview
This appendix describes the EAGLE 2’s infrared hydrocarbon sensor and
includes instructions to use an EAGLE 2 that has an infrared hydrocarbon
sensor installed. It also includes instructions to replace an infrared
hydrocarbon sensor.
Table 30: Infrared Hydrocarbon Sensor Specifications, %LEL Configuration
Table 31: Infrared Hydrocarbon Sensor Specifications, Autoranging Configuration
NOTE: The gas name on the infrared hydrocarbon channel will normally
read “HC”. However, depending on the instrument’s shipment date
and any special requirements, your instrument may read “IBU” or
some other gas name.
Target Gases
The infrared HC sensor is a general hydrocarbon sensor. It is setup for and
factory-calibrated to isobutane.
Description
Table 30 and Table 31 above list the available infrared hydrocarbon sensor
configurations. The infrared hydrocarbon sensor is a smart sensor that stores
the target gas. The infrared hydrocarbon sensor is installed in a single sensor
flow chamber which is located in the area next to the standard 4-sensor flow
chamber. This area can accommodate up to three single sensor flow
chambers. Figure 41 above illustrates a typical infrared hydrocarbon sensor
location in front of the pump. The infrared hydrocarbon flow chamber may
also be installed in one of the other two sensor chamber locations depending
on the particular version of the EAGLE 2. Some infrared hydrocarbon
instrument configurations do not include the 4-sensor flow chamber.
Range Increment Alarm 1 Alarm 2 STEL TWA
0-100 %LEL HC 1 %LEL 10 %LEL 50 %LEL N/A N/A
Range Increment Alarm 1 Alarm 2 STEL TWA
0-100 %LEL HC 1 %LEL 10 %LEL 50 %LEL N/A N/A
2.0-30.0 %vol HC 0.5 %vol N/A N/A N/A N/A