Honeywell Impact Series User Manual

Impact / Impact Pro / Impact Pro IR Operating Instructions
35
4.7.1.1 Flammable Cross-Sensitivity Table
Flammable Gas
EN50054
Relative Sensitivity
(% of Methane Reading)
EN61779
Relative Sensitivity
(% of Methane Reading)
Hydrogen 125 142
Methane 100 100
Ethylene 91 88
Methanol 83 95
Ethane 90 85
Ethanol 67 71
Propane 68 66
Butane 56 59
Pentane 56 63
Octane 42 47
Note
The above data are applicable only to instruments that have catalytic
sensorsconguredtodisplaytheFlammablegasin%LEL.
The previous table and the cross-sensitivity feature offered in the Impact and Impact
Pro are supplied for indicative purposes only. The following points should be noted
when using the table or the software feature.
There is variability in sensor cross-sensitivity between methane and other 1.
flammable compounds. Therefore, if the instrument is calibrated to Methane
(including Enforcer calibrations), the reading when other Flammable gases
are selected will be subject to variation.
For more accurate detection of non-Methane gases, the Flammable Channel of 2.
the instrument should be calibrated to Propane, Pentane or Butane (selectable
from the Settings option in the Calibration Menu). In this instance the reading
obtained when Methane is selected may be subject to inaccuracy.
Maximum accuracy will be obtained by calibrating with the target gas, and is 3.
therefore the preferred method.
Target Gas Recommended Calibration Method
Methane
Enforcer
UI Calibration (using Methane as the selected calibration gas)
PC Calibration (using Methane as the selected calibration gas)
Propane
UI Calibration (using Propane as the selected calibration gas)
PC Calibration (using Propane as the selected calibration gas)
Butane
UI Calibration (using Butane as the selected calibration gas)
PC Calibration (using Butane as the selected calibration gas)
Pentane
UI Calibration (using Pentane as the selected calibration gas)
PC Calibration (using Pentane as the selected calibration gas)
Other
ammable
gases
UI Calibration (using Propane, Butane or Pentane as the selected calibration gas)
PC Calibration (using Propane or Butane as the selected calibration gas)

Honeywell Impact Series Specifications

General

Brand	Honeywell
Model	Impact Series
Category	Battery Charger
Language	English