Drum-type Gasmeters TG-Series (Wet-Type)
Packing Liquids Autin-B
1. General
Autin-B is a Paraffin Oil (white oil) without Polyolefin. It is colourless, clear and odourless.
2. Application
Autin-B can be used in all RITTER Drum-type Gas Meters. As opposed to water as a Packing Fluid, Autin-B can be used under 0°C as well. It also has a lower evaporation rate. Because of this, the Packing Liquid level remains stable over a longer period of time. This leads to an improvement in the repeatability of measurement results, and in a reduction in the required frequency of Packing Liquid level monitoring.
The use of Autin-B is further recommended when the gas should remain dry or when the gas
reacts with water.
Not appropriate for chlorine gas.
3. Advantages
- Use under 0°C
- less evaporation than water due to its lower vapour pressure, resulting in greater stability of the Packing Fluid level and in more consistent measurement result
- the gas remains dry
- in general, a lower chemical reactivity with water
4. Solubility (Bunsen* coefficient at 1013 mbar, 20°C)
| Air | 0,07-0.08 |
| Ammonia | 0,18 |
| Carbon Dioxide | 0,90 |
| Nitrogen | 0,06 |
| Oxygen | 0,12 |
* Bunsen coefficient (N ml/ml): volume of gas, reduced to Normal condition (1013 mbar, 0°C), dissolved in the volume unit of fluid.
5. Kennwerte
| Properties: | 20 | °C | 37,0 | mm2/sec (= cSt) |
| 40 | °C | 16,0 | mm2/sec | |
| 100 | °C | 3,6 | mm2/sec | |
| Density: | 15 | °C | 0,85 | g/ml |
| Vapour pressure: | 20 | °C | < 0,1 | mbar |
| Boiling range: | 335-410 | °C | ||
| Pour point: | -24 | °C | ||
| Flashpoint: | >150 | °C | ||
| Appearance: | Colourless, clear. odourless fluid | |||
Subject to alterations

