Suction filter with integrated Water-Trap
model WT 20.5 A 
- Secure protection of the gas analyser from rain, extra fine dust and insects due to a large membrane surface
- Low costs for reliable safety
- Protection when flushing the housing
Image 1: Suction filter without protection against contact
Functional description:
The suction filter with an integrated Water-Trap is installed in the piping, directly at the sampling location (tunnel, basement garage, shipping container for foodstuffs, greenhouses, etc.). Impurities, rain and insects are retained reliably. Can also be used as protection when flushing the housing.
Technical specifications:
| Scope of delivery: | Suction filter, connection adapter (option), protection cover (option) |
| Water pressure membrane: | 0 - 2 bar |
| Operating pressure for gas: | 0 - 2 bar |
| Gas flow: | 0 - 400 l air/h |
| Pressure drop at 100 l air/h: | approx. 10 mbar |
| Pressure drop at 400 l air/h: | approx. 40 mbar |
| Diaphragm pore size: | < 0,1μm |
| Operating temperature: | 0°C - +90°C |
| Effective filter area: | 25 cm2 |
| Housing volume: | 5 ml |
| Materials used: | PTFE, PP |
| Dimensions: | Diameter 70 mm, length 120 mm |
| Gas connections: | 1/8“ NPT outside thread |
| Gas explosion proof ATEX: | EX II 2G Ex h IIB Gb 0°C ≤ Ta ≤ +90°C attestation EPS 19 ATEX 2 177 U |
| Assembly: | Mounting in the existing piping |
| Language operating instructions: | German and English |
| Item | Item number |
|---|---|
| Suction filter with integrated Water-Trap WT 20.5 A complete. With protection against contact (see Image 2), gas connection 1/8” NPT outside thread | WT205AKP |
| Suction filter with integrated Water-Trap WT 20.5 A spare part. Without protection against contact (see Image 1), gas connection 1/8” NPT outside thread | WT205AET |
| 1 unit of connection adapter with 1/8” NPT inside thread connection for screwed hose connection 6/4 mm | VE18N64-1 |
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