Product Overview
Explosion‑proof switches for gas and liquid are essential safety devices for industrial processes operating in hazardous or potentially explosive environments. These switches monitor flow or pressure conditions and activate alarms, interlocks, or shutdowns when abnormal conditions occur. Their certified explosion‑proof enclosures prevent internal electrical components from igniting surrounding atmospheres. Using robust mechanical or thermal sensing techniques, they offer dependable switching with adjustable setpoints and excellent repeatability. Designed for long service life, these switches feature rugged metal housings, wide operating temperature ranges, and compatibility with aggressive process conditions. Common applications include oil and gas facilities, chemical plants, refineries, pipelines, compressor stations, and safety‑instrumented systems.
Explosion Proof Switch
| Feature | Specification |
|---|---|
| Product Type | Explosion‑proof flow or pressure switch (gas & liquid) |
| Measured Media | Gases and liquids (air, natural gas, fuel gases, oils, water, chemicals) |
| Switching Principle | Mechanical (piston, diaphragm, or vane) or thermal (model dependent) |
| Setpoint Range | Adjustable; application dependent |
| Switch Output | SPDT or DPDT dry contact |
| Repeatability | High, suitable for safety and interlock applications |
| Operating Pressure | Suitable for low to high pressure gas and liquid service (model dependent) |
| Process Temperature | Typically −40°C to +85°C (higher for special versions) |
| Housing Material | Die‑cast aluminum or stainless steel |
| Enclosure Rating | Explosion‑proof |
| Certifications | ATEX, IECEx, UL, CSA, FM (Class I / Zone hazardous areas) |
| Applications | Hazardous‑area flow monitoring, safety interlocks, shutdown systems, alarms |
