Eagle Home Products Eagle Series User Manual download pdf (Page 71)

Eagle Instruction Manual Appendix E: Infrared Methane Sensors • 65

Description

The infrared methane sensor is mounted in the front half of the

instrument case. The sensor is attached and wired to a dedicated

ampliﬁer, which includes ZERO and SPAN controls. A bracket secures

the sensor/ampliﬁer assembly to the instrument case.

Eagles with an infrared methane sensor that has a 0 to 100% LEL

range do not include the standard catalytic combustible gas sensor. In

these models, the infrared methane sensor is wired to the EC4 socket

on the analog PCB and the gas reading is displayed in channel 1. This

sensor is also capable of measuring in the PPM range.

Eagles with an infrared methane sensor that has a 0 to 100% Volume

range may also include the standard combustible gas sensor.

Table 14 lists the sensor conﬁguration for Eagles that include this

sensor. Not all channels may be active in your Eagle.

Calibrating Infrared Methane Sensors

Recommended calibration frequency for the infrared methane sensor

is once every 3 months. Enter Calibration mode and calibrate the

infrared methane sensor using the same procedure as the standard

combustible gas sensor (see “Calibration” on page 41).

NOTE: The 0 to 100% Volume CH

version of the infrared methane

sensor requires the use of a sample bag due to the type of

calibration cylinder used. See Table 15 on page 66 for ordering

information.

Adjusting the sensor controls

CAUTION:Only perform the following steps if you are unable to set the

correct calibration reading with the AIR/▲ and SHIFT/▼

buttons.

Table 14: Sensor Conﬁguration for Infrared Methane Sensors

(0 to 100% Volume)

Channel Sensor Analog PCB Socket

1 Standard combustible gas (0 to 100% LEL) COMB

2 Infrared methane (0 to 100% Vol. CH

) EC4

3 Oxygen CN2

4 Toxic gas or infrared carbon dioxide EC1, EC2, or EC3

1 2 ... 66 67 68 69 70 71 72 73 74 75 76 ... 79 80

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Eagle Home Products Eagle Series User Manual Page 71