Model 5100-02-IT Combustible Gas Sensor Module

7.9APPENDIX I: COMBUSTIBLE GAS SCALING FACTORS

For combustible gas monitoring, a calibration standard of Methane may be used in conjunction with scaling factors to cause Sentry concentration display and alarm function in %LEL scale of another gas as follows:

GAS

METHANE

 

GAS

METHANE

 

FACTOR

 

 

FACTOR

Acetaldehyde

60

 

Diethyl Ether

46

Acetic Acid

54

 

Dimethoxyethane

42

Acetic Anhydride

46

 

Dimethyl Ether

63

Acetone

52

 

Dimethylformamide

46

Acetylene

57

 

Ethyl Formate

44

Alkyl Alcohol

51

 

Ethylmercaptan

56

Ammonia

126

 

n-Heptane

39

n-Amyl Alcohol

33

 

n-Hexane

37

Aniline

39

 

Hydrazine

45

Benzene

41

 

Hydrogencyanide

48

Biphenyl

25

 

Hydrogen

77

1,3-Butadiene

56

 

Hydrogen Sulfide

41

n-Butane

58

 

Methane

100

iso-Butane

52

 

Methyl Actetate

50

Butene-1

45

 

Methyl Alcohol

86

cis-Butene-2

48

 

Methylamine

77

trans-Butene-2

51

 

Methyl Bromide

90

n-Butyl Alcohol

34

 

Methyl Chloride

102

iso-Butyl Alcohol

53

 

Methylcyclohexane

44

tert-Butyl-Alcohol

74

 

Methylenedichloride

93

n-Butyl Benzene

31

 

Methylethylether

44

iso-Butyl Benzene

32

 

Methylethylketone

41

n-Butyric Acid

38

 

Methyl Formate

67

Carbon Disulfide

18

 

Methylmercaptan

61

Carbon Monoxide

75

 

Methylpropionate

51

Carbon Oxysulphide

93

 

Methyl n-propylketone

40

Chlorobenzene

34

 

Napthalene

34

Cyanogen

89

 

Nitromethane

34

Cyclohexane

41

 

n-Nonane

31

Cyclopropane

62

 

n-Octane

37

n-Decane

33

 

n-Pentane

46

Diethylamine

49

 

i-Pentane

46

Dimethylamine

58

 

Propane

55

2,3-Dimethylpentane

40

 

n-Propyl Alcohol

47

2,3-Dimethylpropane

40

 

n-Propylamine

48

Dimethylsulphide

43

 

n-Propylchloride

50

1,4-Dioxane

45

 

Propylene

52

Epichlorohydrin

45

 

Propyleneoxide

46

Ethane

68

 

iso-Propylether

44

Ethyl Acetate

51

 

Propyne

42

Ethyl Alcohol

73

 

Toluene

40

Ethylamine

53

 

Triethylamine

40

Ethyl Benzene

36

 

Trimethylamine

48

Ethyl Bromide

91

 

Vinylethylether

42

Ethyl Chloride

57

 

o-Xylene

36

Ethylcyclopentane

40

 

m-Xylene

39

Ethylene

71

 

p-Xylene

39

Ethylenedichloride

66

 

JP-4 (Jet Fuel)

41

Ethyleneoxide

52

 

 

 

NOTES:

1.Scaling factors are not FMRC approved.

2.Base data source: EEV sensor specification catalog. (EEV claims some data is the result of specific tests, other data is empirically derived).

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Univex 5100-02-IT, IT Series instruction manual Appendix I Combustible GAS Scaling Factors, GAS Methane Factor

5100-02-IT, IT Series specifications

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