Gas Sensor Sintered Flame-Arrestor Cap is used for letting target gas diffuse to a catalytic or infrared sensor while the sintered metal cap stops a flame inside the sensor head from reaching the outside atmosphere. IEC 60079-1 (Ex d) designs is the reference cited for it on drawings, datasheets and purchase orders.
What IEC 60079-1 (Ex d) designs Means for Gas Sensor Sintered Flame-Arrestor Cap
The dimensions in the table below are supplied to suit IEC 60079-1 (Ex d) designs. Where the standard sets requirements for the finished appliance, device or system, compliance testing of that assembly stays with its manufacturer; we supply the metal mesh part to the drawing and can provide material certificates and dimensional reports with the shipment.
Gas Sensor Sintered Flame-Arrestor Cap Dimensions
| Size | Outer diameter (mm) | Length (mm) | Micron rating (u00b5m) | Media |
|---|---|---|---|---|
| Cap 16 | 16 | 10 | 20 | Sintered SS316L powder |
| Cap 20 | 20 | 12 | 40 | Sintered SS316L powder |
| Disc 12 | 12 | 2 | 10 | Sintered 5-layer mesh |
Specifying Gas Sensor Sintered Flame-Arrestor Cap Beyond the Standard
- Porosity: Finer porosity (10–20 µm) gives better flame quenching but slower gas diffusion; the sensor maker specifies the window.
- Material: SS316L sintered powder or multi-layer mesh, resistant to H2S and humidity.
- Certification: The cap is part of the certified flameproof assembly — substitutes must be identical.
When Gas Sensor Sintered Flame-Arrestor Cap Is Not the Right Choice
Not a liquid filter or a dust filter for heavy particulate — use a separate pre-filter.
