ENMET RECON-4 - Manual (Page 14)

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3.8.2.3 Channel 3— Carbon monoxide (CO)
The Adjusting Concentration of the channel of CO can only be between 200.0 and 800.0 ppm.
The Low alarm level for CO should be between 25.0 and 100.0 ppm.
The high alarm level for CO should be between 100.0 to 500.0 ppm.
3.8.2.4 Channel 4—COMB (Combustible Gas)/Methane (CH4)
The Adjusting Concentration for the COMB/Methane channel can only be between 20.0 and 80.0 % LEL.
The Low alarm level of COMB/ Methane should be between 10.0 and 25.0 % LEL.
The high alarm level of COMB/ Methane should be between 25.0 to 80.0 % LEL.