Trafag 947 Pressostat stands as a robust solution for high-precision pressure monitoring in explosive atmospheres, uniquely engineered to meet ‘Simple Apparatus’ criteria under ATEX standards for seamless, intrinsic safety integration.

Trafag’s electromechanical pressure switches, also known as pressostats, can be operated maintenance-free for decades, even under harsh conditions. Various versions with bellows, diaphragm, and piston sensors cover a wide range of pressure ranges, media, and load profiles for the most diverse applications.
Technical Data of Trafag 947 Pressostat «Simple Apparatus» conformity to ATEX
| Product code | 947 |
| Name | «Simple Apparatus» conformity to ATEX |
| Designation | Pressostat |
| Product category | Mechanical pressure switches |
| Measuring range | 1 … 10 to 60 … 600 bar |
| Measuring principle | Piston |
| Designation of application | Industrial pressostat |
| Applications | Potentially hazardous areas |
| Approval/conformity | EN60730-1/ EN60730-2-6: Typ 2.B.H EN60079-0, EN60079-11 Zone 1 and 2, 21 and 22 |
| Repeatability | ± 1.0 % FS typ. |
| Output signal | 1 Floating change-over contact (SPDT) |
| Media temperature | O-Ring NBR: -30°C … +100°C O-Ring FKM: -15°C … +150°C |
| Ambient temperature | -25°C … 70°C |
Main Features of Trafag 947 Pressostat «Simple Apparatus» conformity to ATEX
- Compact design
- Rugged housing
- Protection IP 65
- Diverse mounting positions
- May be used as a simple apparatus in zones at risk of explosions
Application of Trafag 947 Pressostat «Simple Apparatus» conformity to ATEX
- Oil and Gas: For pressure monitoring in transfer pipelines, oil refineries, or storage facilities with explosion risks.
- Petrochemical Industry: Ensuring safety and pressure control in chemical processes in hazardous environments.
- Energy Industry: Used on boiler systems, turbines, and generators in high-risk conditions.
- Water and Sewage Treatment: Used for pressure control systems in water treatment plants with Ex risk.
- Mining: Suitable for operation in underground areas with hazardous gases.
- Pharmaceutical and Food: Monitoring pressure in production processes that require high safety standards.
Source: trafag.com
Read More Articles:
- Trafag LLF 736754 LABORSTAT
- Trafag ISPISPT 474 Picotherm
- Trafag MST 624634 Ministat
- Trafag ISNISNT 471472 Navistat
- Trafag TMP 801 Test gauge


