Eagle Home Products Eagle Series User Manual download pdf (Page 72)

66 • Appendix E: Infrared Methane Sensors Eagle Instruction Manual

1. Use the AIR/▲ and SHIFT/▼ buttons to set the reading to the

middle of the range in which you can currently adjust the reading.

For example, if you can set the reading from a minimum of 10%

LEL to a maximum of 40% LEL, set the display to 25% LEL.

2. Unscrew the two large screws on the top of the case, then carefully

lift the top of the case and lay it aside.

3. Locate the infrared methane sensor in the front half of the bottom

case. It is connected to the EC4 socket on the analog PCB.

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 on the top edge of the ampliﬁer and is the

control closest to the front of the instrument.

5. Place the top of the case in its original position, then secure it with

the large screws you loosened in step 5.

6. Continue with the normal calibration procedure.

Replacing Infrared Methane Sensors

Return the Eagle to RKI Instruments, Inc., for replacement of the

infrared methane sensor when:

• The infrared methane channel cannot be calibrated correctly.

• The infrared methane reading cannot be set to zero by the Demand

Zero command.

Parts List

Table 15 lists part numbers for replacement parts and accessories of

the Eagle’s infrared 100% volume methane sensor.

Table 15: Parts List: Infrared Methane Sensors

Part Number Description

81-0015RK-01 Calibration cylinder, 34-liter (50% volume CH

)

81-1001RK Dispensing valve (for 34-liter calibration cylinders)

81-1126RK Calibration sample bag, tedlar (9 in. x 9 in.)

81-1127RK Calibration sample bag, tedlar (12 in. x 12 in.)

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Eagle Home Products Eagle Series User Manual Page 72