Honeywell XNX Quick Start Manual page 53

Gas
Acetone
Ammonia
Benzene
Butanone
Butane
Butyl acetate
Butyl acrylate
Cyclohexane
Cyclohexanone
Diethyl ether
To cross calibrate the MPD-CB1 combustible gas sensor:
1. Obtain the star rating for both the test gas and the gas to be
detected from the table above.
2. Set the gas selection to the star rating which is the same star rating
of the gas being detected.
3. These values may then be used in the following table to obtain the
required meter setting when a 50% LEL test gas is applied to the
detector.
* Rating of
Calibration
Gas
NOTE
These settings must only be used with a calibration gas concentration of 50% LEL.
4. If a sensor is to be used to detect a gas other than that for which
it was calibrated, the required correction factor may be obtained
from the following multiplication table. The meter reading should
be multiplied by this number in order to obtain the true gas
concentration.
XNX Universal Transmitter Quick Start Guide
Star
Rating
4* Ethane
7* Ethanol
3* Ethyl acetate
3* Ethylene
4* Heptane
1* Hexane
1* Hydrogen
3* Methane
1* Methanol
4* MIBK
* Rating of Gas to be Detected
8* 7*
8* 50 62
7* 40 50
6* 33 41
5* 26 33
4* - 26
3* - -
2* - -
1* - -
Star
Gas
Rating
6*
5*
3*
5*
3*
3*
6*
6*
5*
3*
6* 5* 4*
76 95 -
61 76 95
50 62 78
40 50 63
32 40 50
26 32 40
- 25 31
- - 25
Gas
Nonane
Octane
Pentane
Propane
Propan-2-ol
Styrene
Tetra hydrafuran
Toluene
Triethylamine
Xylene
3* 2* 1*
- -
- -
95 -
79 95 -
63 80 95
50 64 81
39 50 64
31 39 50
Star
Rating
2*
3*
4*
5*
4*
2*
4*
3*
3*
2*
53