Notes for Intrinsically Safe Applications
Specifying Sensors for Ex ia Circuits
All sensors shown on this website are suitable for instrincally safe (IS) applications to Zone 0, providing an appropriate barrier is used (full classication is: Ex II 1 G Ex ia IIC Ga). Due to the mineral insulated construction, insulation resistance between conductors (minimum 1000 M Ω) guaranteeds conformance.
Barriers isolate the signal from the hazardous area, therefore no further certification of the sensor is required.
Our transmitters are also Ex ia approved. If specifying a sensor for an instrinsically safe area, please add 'IS' after the type reference (for example: 52-IS) and we will provide the documentation as follows with the order:
All sensors shown on this website are suitable for instrincally safe (IS) applications to Zone 0, providing an appropriate barrier is used (full classication is: Ex II 1 G Ex ia IIC Ga). Due to the mineral insulated construction, insulation resistance between conductors (minimum 1000 M Ω) guaranteeds conformance.
Barriers isolate the signal from the hazardous area, therefore no further certification of the sensor is required.
Our transmitters are also Ex ia approved. If specifying a sensor for an instrinsically safe area, please add 'IS' after the type reference (for example: 52-IS) and we will provide the documentation as follows with the order:
- Ex ia tags
- TC Ltd Ex ia certificate of conformity & letter of conformity from TrAC Global Ltd (our notified body)
- IECEx certificate for transmitter (if required)
- All terminal heads are supplied in stainless steel (die cast alloy is not permitted in IS areas)
- All cables are supplied with blue outer sheath