C3EC4 ’Y‰»…‘f |
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Performance
Measuring Range |
0.02 to 0.8% |
Number of Pump Strokes |
1 |
Correction Factor |
1 |
Sampling Time |
2 minutes per pump stroke |
Detecting Limit |
0.002% (n=1) |
Colour Change |
Orange → Blackish Green |
Reaction Principle |
LPG+ Cr6++ H2SO4 → Cr3+ |
Coefficient of Variation |
10% (for 0.02 to 0.2 %), 5% (for 0.2 to 0.8 %) |
Shelf Life |
3 Years |
Corrections for temperature & humidity |
Unnecessary |
Store the tubes at cool and dark place. |
Possible coexisting substances and their interferences
(NOTE)
Substance |
Concentration |
Interference |
Change colour by itself to |
Ketones |
0.2% |
+ |
Blackish green |
Esters |
0.2% |
+ |
Blackish green |
Hydro carbons( 3) |
|
+ |
Blackish green |
Other substance measurable with this detector tube
Substance |
Correction Factor |
No. of pump strokes |
Measuring Range |
Propylene |
1 |
1 |
0.02 to 0.8 % |
Xylene |
by scale |
2 |
0.1 to 1.2 % |
Calibration gas generation |
Static gas dilution method |
TLV-TWA |
TLV-STEL |
Explosive range |
1000ppm |
- |
1.6to10% |