Description
The Draeger CH30901 is the Hydrogen 0.5%/a detector tube, measuring range 0.5 to 3.0 Vol%, 5 pump strokes, measuring time approx. 1 min (handbook, p. 198). Sold by the box of 10, 10 single-use tubes. Read on a Draeger accuro or X-act 5000 tube pump. Ships in 1–2 business days; most orders arrive in 3–7 business days. All Draeger tubes for Hydrogen.
Draeger CH30901 specifications
| Item | Draeger data |
|---|---|
| Part number | CH30901 |
| Gas or substance | Hydrogen |
| Tube type | 0.5%/a |
| Measuring range | 0.5 to 3.0 Vol% |
| Number of strokes (n) | 5 |
| Measuring time | approx. 1 min |
| Standard deviation | ± 10 to 15 % |
| Color change | yellow-green → gray-green |
| Temperature | 5 to 40 °C |
| Humidity | less than 30 mg H2O/L |
| Reaction principle | a) H2 + 1/2 O2 → H2O b) H2O + SeO2 + H2SO4 → pink reaction product |
| Pack | Box of 10 |
| Pump | Read on a Draeger accuro or X-act 5000 tube pump |
Source: Dräger-Tubes & MicroTubes Handbook, 22nd edition (order no. 90 92 086), p. 198, Dräger Safety AG & Co. KGaA.
Cross-sensitivity (handbook, p. 198): CO has no effect on the reading up to 1000 ppm, higher concen- trations lead to minus errors. Acetylene and alcohols react similar to hydrogen. Caution Do not use in explosion-hazard areas. If necessary, use a non-specific Ex measuring unit to qualify the use of the tubes. The catalyst layer heats up during measurement and becomes red hot at hydrogen concentrations above 3 Vol%! Measurement of hydrogen in air with at least 5 Vol% oxygen.
Other Draeger tubes for Hydrogen
| Part number | Tube | Measuring range | Pack |
|---|---|---|---|
| 8101511 | Draeger Hydrogen 0.2%/a Detector Tubes, Box of 10 | 0.2 to 2.0 Vol% | Box of 10 |
Every Draeger tube for this gas, with live prices: Hydrogen detector tubes.
Draeger CH30901 questions
What does the Draeger CH30901 measure? Hydrogen in air, measuring range 0.5 to 3.0 Vol%.
How many pump strokes does the CH30901 take? 5 strokes (n) per the handbook, p. 198. Measuring time approx. 1 min.
Which pump does the CH30901 use? A Draeger tube pump: the accuro hand pump or the X-act 5000. Per the handbook (p. 28–29), Draeger short-term tubes and Draeger tube pumps are matched at the factory and form a single unit; using other pumps with Draeger tubes, or other tubes with Draeger pumps, can impair the measurement.
What is the color change on the CH30901? yellow-green → gray-green, read against the scale printed on the tube.
Do Draeger CH30901 tubes expire? Yes. Draeger prints an expiration date (month and year) on the package; the handbook states a typical shelf life for the customer of up to two years, stored sealed at the temperature on the package strip (handbook section 2.13).
How many tubes are in a box of CH30901? 10. Each tube is used once.
Guides: what Draeger tubes measure · pump strokes and measuring time · how to read a tube · expiration and storage · cross-sensitivity · all tubes by gas and range.
