Appendix: Calibration Guide for Additional Gases

The ULTIMA XIR PLUS sensor can be calibrated for a wide variety of combustible gas compounds.

This information is only applicable for combustible XIR PLUS sensors and does not apply to CO2 and acetylene sensors.

The XIR PLUS sensor is only performance approved for Methane and Propane.

To change the XIR PLUS calibration,

1. Scroll and select Settings.
2. Select Sensor.
3. Scroll and select Gas Table.
4. Select the gas table for the target compound.
5. Select Save.
6. Scroll to Span Value and select (should already be in correct menu after saving Gas Table).
7. Enter the span value for the target compound as described in Table 20 .
8. Select Save.
9. Go to the home screen.
10. Run a full calibration (Span and zero) using the calibration gas indicated in Table 20 .

You can now calibrate the XIR PLUS sensor using the calibration gas for the target compound in Table 20 .

WARNING! 

• You must calibrate the XIR PLUS sensor with the calibrationgas indicated in Table 20 for the sensor to be accurate for the target gas.
• Curve 8 gas calibrations may require a special IR sensor for optimum performance. The standard Propane calibrated IR sensor may not perform properly if used outdoors with a Curve 8 calibration.

Failure to follow this warning can result in serious personal injury or death.

Table 20 XIR PLUS Calibration Guide for Additional Gases

Compound

Vol % for NA LEL

Vol % for EN LEL

Linearity Curve/Table

Cal Gas

NA Span Value

EN Span Value

Acetaldehyde

4.0

4.0

8

0.1 % Propane

29%

29%

Acetic Acid

4.0

4.0

3

0.6 % Propane

12%

12%

Acetone

2.5

2.5

8

0.1 % Propane

20%

20%

Acrolein

2.8

2.8

8

0.1 % Propane

59%

59%

Acrylic Acid

2.4

2.4

2

0.6 % Propane

10%

10%

Allyl Alcohol

2.5

2.5

1

2.5 % Methane

85%

85%

Allylamine

2.2

2.2

8

0.1 % Propane

18%

18%

Amyl Acetate

1.1

1.0

1

2.5 % Methane

80%

88%

t-Amyl Alcohol

1.3

1.4

6

0.6 % Propane

41%

38%

Aromatic 100

0.9

N/A

1

2.5 % Methane

75%

N/A

Benzene

1.2

1.2

8

0.1 % Propane

42%

42%

1,3-Butadiene

2.0

1.4

8

0.1 % Propane

23%

33%

Butane

1.9

1.4

4

0.6 % Propane

29%

39%

Butanol

1.4

1.4

6

0.6 % Propane

42%

42%

Butene

1.6

1.6

6

0.6 % Propane

57%

57%

Butyl Acetate

1.7

1.2

6

0.6 % Propane

40%

57%

Butyl Acrylate

1.5

1.2

6

0.6 % Propane

45%

56%

Butyl Methacrylate

2.0

1.0

6

0.6 % Propane

33%

66%

Butyraldehyde

1.4

1.7

6

0.6 % Propane

65%

54%

Cumene

0.9

0.8

1

2.5 % Methane

43%

48%

Cyclohexane

1.3

1.0

1

2.5 % Methane

50%

65%

Cyclohexanone

1.1

1.3

6

0.6 % Propane

74%

63%

Cyclopentane

1.5

1.4

7

0.6 % Propane

31%

33%

Cyclopentanone

1.5

1.6

1

2.5 % Methane

60%

56%

1,2-Dichloroethane

6.2

6.2

8

0.1 % Propane

14%

14%

Dicyclopentadience (DCPD)

0.8

0.8

6

0.6 % Propane

55%

55%

Diethylamine

1.8

1.7

2

0.6 % Propane

32%

34%

Diethyl Ether

1.9

1.7

2

0.6 % Propane

38%

42%

Diethyl Ether

6.2

N/A

8

0.1 % Propane

20%

N/A

1,1-Difluoroethane (R-152a)

3.7

4.0

2

0.6 % Propane

52%

48%

Diisobutylene

0.8

0.8

2

0.6 % Propane

52%

52%

Diisopropyl Ether

1.4

1.0

6

0.6 % Propane

34%

48%

Dimethylamine

2.8

2.8

2

0.6 % Propane

37%

37%

Dimethylaminopropylamine (DMAPA)

2.3

1.2

2

0.6 % Propane

29%

56%

Dimethyl Ether

3.4

2.7

2

0.6 % Propane

32%

40%

Dimethylethylamine (DMEA)

2.3

N/A

2

0.6 % Propane

22%

N/A

Dimethylisopropylamine (DMIPA)

1.0

1.1

6

0.6 % Propane

47%

43%

1,4-Dioxane

2.0

N/A

4

0.6 % Propane

42%

N/A

1,3-Dioxolane

2.1

2.3

2

0.6 % Propane

35%

32%

Epichlorohydrin

3.8

2.3

6

0.6 % Propane

46%

76%

Ethane

3.0

2.4

3

0.6 % Propane

25%

31%

Ethanol

3.3

3.1

6

0.6 % Propane

35%

37%

Ethyl Acetate

2.0

2.0

6

0.6 % Propane

60%

60%

Ethyl Acrylate

1.4

1.4

8

0.1 % Propane

15%

15%

Ethyl Benzene

0.8

1.0

8

0.1 % Propane

15%

12%

Ethyl Chloride

3.6

3.6

2

0.6 % Propane

27%

27%

Ethylene

2.7

2.3

8

1.35 % Ethylene

50%

59%

Ethylene Diamine

4.2

2.5

8

0.1 % Propane

17%

29%

Ethylene Glycol Monomethyl Ether

1.8

1.8

6

0.6 % Propane

60%

60%

Ethylene Oxide

3.0

2.6

6

0.6 % Propane

65%

75%

Gasoline (as Hexane)

1.1

1.0

6

0.6% Propane

41%

45%

Heptane

1.1

0.85

2

0.6% Propane

35%

45%

Hexamethyldisiloxane (HMDS)

0.5

0.5

8

0.1% Propane

22%

22%

Hexane

1.1

1.0

6

0.6% Propane

41%

45%

1-Hexene

1.2

1.2

6

0.6% Propane

38%

38%

Isobutane

1.8

1.3

2

0.6% Propane

30%

42%

Isobutyl Alcohol

1.7

1.4

6

0.6% Propane

41%

50%

Isobutyl Isobutyrate (IBIB)

1.0

0.8

1

2.5% Methane

25%

31%

Isobutylene

1.8

1.6

6

0.6% Propane

62%

70%

Isooctane

1.1

0.7

4

0.6% Propane

28%

44%

Isopropanol

2.0

2.0

6

0.6% Propane

48%

48%

Isopropyl Acetate

1.8

1.7

6

0.6% Propane

57%

60%

Isopropyl Amine

2.0

2.3

6

0.6% Propane

41%

36%

JP-5

0.6

N/A

6

0.6% Propane

41%

N/A

Methanol

6.0

6.0

3

0.6% Propane

23%

23%

Methoxypropylamine

2.3

2.3

6

0.6% Propane

55%

55%

Methyl Acetate

3.1

3.1

5

0.6% Propane

46%

46%

Methyl Acrylate

2.8

1.95

6

0.6% Propane

68%

N/A

Methacrylic Acid

1.6

2.1

2

0.6% Propane

55%

42%

Methyl Amyl Ketone (MAK)

1.1

1.1

6

0.6% Propane

51%

51%

Methyl Cellosolve

1.8

1.8

6

0.6% Propane

60%

60%

Methyl Chloride

8.1

7.6

6

0.6% Propane

48%

51%

Methyl Chloroform (1,1,1-Trichloromethane)

0.1

N/A

6

0.6% Propane

85%

N/A

Methylcyclohexane

1.2

1.0

1

2.5% Methane

33%

40%

Methylene Chloride

13.0

13.0

1

2.5% Methane

68%

68%

Methylene Fluoride (R-32)

12.7

12.7

6

0.6% Propane

13%

13%

Methyl Ethyl Ketone (MEK)

1.4

1.5

1

2.5% Methane

72%

67%

Methyl Formate

4.5

5.0

4

0.6% Propane

29%

26%

Methyl Isobutyl Carbinol (MIBC)

1.0

1.14

2

0.6% Propane

25%

22%

Methyl Isobutyl Ketone (MIBK)

1.2

1.2

6

0.6% Propane

54%

54%

Methyl Mercaptan

3.9

4.1

8

0.1% Propane

17%

16%

Methyl Methacrylate

1.7

1.7

6

0.6% Propane

72%

72%

Methyl Propyl Ketone (MPK)

1.5

1.5

6

0.6% Propane

54%

54%

Methyl tert-butyl Ether (MTBE)

1.6

1.5

2

0.6% Propane

29%

31%

Monomethyl Amine

4.9

4.2

2

0.6% Propane

33%

39%

Morpholine

1.4

1.4

6

0.6% Propane

59%

59%

Naptha, VM&P

1.2

N/A

6

0.6% Propane

41%

N/A

Nitro Methane

7.3

7.3

8

0.1% Propane

45%

45%

Nitro Ethane

3.4

3.4

1

2.5% Methane

85%

85%

Opteon XL 41 (R-454b)

11.3

N/A

3

0.6% Propane

20%

N/A

Pentane

1.5

1.1

5

0.6% Propane

33%

45%

n-Propanol

2.2

2.1

2

0.6% Propane

36%

38%

Propionaldehyde (Propanal)

2.6

2.0

6

0.6% Propane

69%

n.a.

Propyl Acetate

1.7

1.7

6

0.6% Propane

41%

41%

Propyl Bromide

3.8

3.4

2

0.6% Propane

23%

26%

Propyleneimine

1.32

N/A

6

0.6% Propane

72%

N/A

Propylene Glycol Methyl Ether (PGME)

1.8

1.6

6

0.6% Propane

47%

53%

Prop. Glycol Meth. Ether Acetate (PGMA)

1.5

1.3

6

0.6% Propane

67%

77%

Propylene Oxide

2.3

1.9

2

0.6% Propane

38%

46%

Pyridine

1.8

1.7

8

0.1% Propane

20%

21%

Stoddard Solvent

0.9

N/A

2

0.6% Propane

32%

N/A

Styrene

0.9

1.0

8

0.1% Propane

45%

41%

Tetrahydrofuran (THF)

2.0

1.5

2

0.6% Propane

40%

53%

Tetrahydropyran (THP)

1.6

N/A

6

0.6% Propane

40%

N/A

tert-Butanol

2.4

1.4

2

0.6% Propane

27%

46%

Toluene

1.1

1.0

8

0.1% Propane

18%

20%

1,1,1-Trichloroethane

7.5

9.5

8

0.1% Propane

20%

16%
Tetrahyrdothiphene (THT) 1.5 1.5 1 2.5% Methane 29% 29%

Triethylamine

1.2

1.2

6

0.6% Propane

36%

36%

Trimethylamine

2.0

2.0

2

0.6% Propane

38%

38%

Turpentine

0.8

0.8

8

0.1% Propane

20%

20%

Vinyl Acetate

2.6

2.6

8

0.1% Propane

63%

63%

Vinyl Trimethoxysilane

1.1

N/A

2

0.6% Propane

35%

N/A

Xylenes (O-Xylene)

0.9

0.9

1

2.5% Methane

59%

59%