Sensing Devices has gained European Ex Directive (94/9/EC) and IECEx international certification for the specialist manufacture of temperature sensors for use in hazardous and explosive atmospheres. Sensor and RTDs Devices falling within the scope of both directives must comply to stringent certification.
We manufacture Ex and IECEX certified RTDs and Stator sensors to Ex ia, Ex e and Ex d standards. Our experienced technical team can provide advice on certification and the best assembly configurations.
Ex certified RTDs and stator sensors are manufactured in-house to rigorous Ex & IECEx processes and documentation. We assemble sensors approved for use in areas with the following protection classifications:
| Symbol | Description |
 |
EU explosion atmosphere symbol |
| Device Group | Description |
| Group I | For use in underground mines and with its related above ground equipment |
| Group II | For use above ground at risk of explosion |
| Category | Zone | Description | Safety |
| Category 1G | Zone 0 | Inflammable gases, vapours or mist | Very high level of safety |
| Category 2G | Zone 1 | Inflammable gases, vapours or mist | High level of safety |
| Category 3G | Zone 2 | Inflammable gases, vapours or mist | Normal level of safety |
| Category 1D | Zone 20 | Inflammable dust | Very high level of safety |
| Category 2D | Zone 21 | Inflammable dust | High level of safety |
| Category 3D | Zone 22 | Inflammable dust | Normal level of safety |
| Identify | Description |
| EEx | Defines that this is an electrical device |
| Class | Ignition protection category | Can be used in zone | Safety principle |
| EExia | Intrinsically Safe (Special requirements) | Zone 0 | Limits the energy of the spark and temperature of the surface |
| EExd | Explosion Proof, Pressurised encapsulation | Zone 1 | Controls an internal explosion and extinguishes the flame |
| EExe | Increased Safety | Zone 1 | No arcs, sparks or hot surfaces |
| Explosion Gas Group | Description |
| I | Methane (Mining only) |
| IIA | Propane |
| IIB | Ethylene |
| IC | Hydrogen |
| Temperature Class | Description |
| T1 | 450°C |
| T2 | 300°C |
| T3 | 200°C |
| T4 | 135°C |
| T5 | 100°C |
| T6 | 85°C |
The SD01529 Resistance Temperature Detector (RTD) is a simplex or duplex PT100 sensing element (100Ω at 0°C) housed in a metal probe.
| CONFIGURATION | A number of different lengths and styles of probes are available for different temperature measurement applications (See Diagram) |
| CONNECTIONS | Connections are made via a flying lead housed in conduit, terminals on a ceramic block, terminals within a metal/plastic terminal housing or plug/socket. |
| WORKING TEMPERATURE | -196°C to +650°C (Application and environment will determine which element, cable and insulation is used.) |
| INGRESS PROTECTION | Minimum requirement IP20, Up to IP68 Depending on application and environment. |
| APPROVAL | Ex and IECEx Approved. |
| CABLE LENGTH | Maximum 15 Metres. |
The SD01529 Resistance Temperature Detector (RTD) is a simplex or duplex PT100 sensing element (100Ω at 0°C) housed in a metal probe.
| CONFIGURATION | A number of different lengths and styles of probes are available for different temperature measurement applications (See Diagram) |
| CONNECTIONS | Connections are made via a flying lead housed in conduit, terminals on a ceramic block, terminals within a metal/plastic terminal housing or plug/socket. |
| WORKING TEMPERATURE | -196°C to +650°C (Application and environment will determine which element, cable and insulation is used.) |
| INGRESS PROTECTION | Minimum requirement IP20, Up to IP68 Depending on application and environment. |
| APPROVAL | Ex and IECEx Approved. |
| CABLE LENGTH | Maximum 15 Metres. |
The Ex d Resistance Temperature Detector (RTD) is a simplex or duplex PT100 sensing element (1008 at 0°C) housed in a metal probe.
| CONFIGURATION | A number of different lengths and styles of probes are available for different temperature measurement applications. |
| CONNECTIONS | Connections are made via a flying lead housed in a Ex d Flameproof terminal head or enclosure. |
| WORKING TEMPERATURE | -196°C to +650°C (Application and environment will determine which element, cable and insulation is used.) |
| INGRESS PROTECTION | IP68 |
| APPROVAL | Ex and IECEx Approved. |
Stator Winding is a simplex or duplex PT100 sensing element (100Ω at 0°C) housed in a metal probe.
| CONFIGURATION | A number of different lengths and styles of probes are available for different temperature measurement applications (See Diagram) |
| CONNECTIONS | Connections are made via a flying lead housed in conduit, terminals on a ceramic block, terminals within a metal/plastic terminal housing or plug/socket. |
| APPROVAL | Ex and IECEx Approved. |
| CABLE LENGTH | Maximum 10 Metres. |
Stator Winding is a simplex or duplex PT100 sensing element (100Ω at 0°C).
| CONFIGURATION | A number of different lengths and styles of probes are available (See Diagram) |
| WORKING TEMPERATURE | All materials to withstand max continuous temperature of 155°C (Class F) 180°C (Class H) |
| APPROVAL | Ex and IECEx Approved. |
| CABLE LENGTH | Maximum 10 Metres. |
