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Indicator: 5 to50 ppm
Measuring Range: 5 to50 ppm
Sampling Rate: 100mL/min(300mL)
Sampling Time: 3 minute
Colour Change: Yellow → Dark brown
Reaction Principle: CO + Na2Pd(SO3)2 → Pd + CO2 + SO2+Na2SO3
Coefficient of Variation: 10% (for 5 to 10 ppm), 5% (for 10 to 50 ppm)
Nr. of tests: 10
Performance
| Measuring Range | 5 to50 ppm |
| Sampling Rate | 100mL/min(300mL) |
| Correction Factor | 1 |
| Sampling Time | 3 minutes |
| Colour Change | Yellow → Dark brown |
| Reaction Principle | CO + Na2Pd(SO3)2 → Pd + CO2 + SO2+Na2SO3 |
| Coefficient of Variation | 10% (for 5 to 10 ppm), 5% (for 10 to 50 ppm) |
| Shelf Life | 2 Years |
| Corrections for temperature | Unnecessary for 0 to 40℃ |
| Corrections for humidity | Unnecessary for R.H.0 to 90% |
| Store the tubes at cool and dark place. | |
| Calibration gas generation | High pressure gas cylinder method |
| TLV-TWA | TLV-STEL | Explosive range |
| 25 ppm | - | 12.5 to 74% |
Measurement procedure:
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1.Install a reducer pressure with gauge and flow metre to a cylinder, compressor or air line and adjust the flow metre the required setting. | |
| 2.Break tips off a fresh detector tube in the tube tip breaker and insert a tube into a tube holder. |
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3.Attach the rubber tube holder to the flow metre outlet. Make certain the tube arrow on the tube pointing in a down direction. |
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| 4.Turn on the cylinder or compressor and confirm the flow metre according to each Airtec tube specifications. |
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5.Time the flow rate with a stopwatch. | |
| 6.As soon as sampling time has elapsed turn off the cylinder or compressor, and remove the tube from the tube holder and then read the colour change layer immediately. |
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