PSG Process Extruded ATEX: self-regulating ATEX sample line for hazardous zones
The PSG Process Extruded ATEX is developed for continuous extractive gas analysis in environments with an explosion hazard. The line transports the humid sample gas from the sampling point to the analysis room at a constant temperature above the dew point and acid dew point. This prevents condensation of water vapour on the way, gas components are not washed out and the analyser keeps working reliably, even at outdoor temperatures down to -20 °C (optionally down to -52 °C).
Application
The PSG Process Extruded ATEX is suitable for use in Ex zones 1 and 2, such as in the chemical and petrochemical industries, at gas compressor stations, on offshore platforms and in other environments with explosive atmospheres. The ATEX-certified heating cables make the line suitable for these demanding environments, without the need for an external control cabinet.
Technology
The line has a thick-walled extruded outer jacket of TPU, PE or PVC, flame-retardant and extremely weather-resistant. Heating is provided by high-grade self-regulating Raychem® heating cables certified for ATEX zones. The cable consists of two parallel power conductors connected by an electrically conductive polymer. As the temperature rises, the conductivity decreases due to molecular expansion, until the maximum temperature is reached. If the temperature drops, the process reverses. Isolatie is uitgevoerd met glasvezel- of thermisch vlies. Inner tubes of PTFE, PFA, stainless steel or special alloy are available, optionally replaceable.
Functions and options
Because the heating cable is self-regulating, no separate temperature controller is needed. The line is available up to 300 metres in one piece and can be freely cut on site without loss of function. Ready-made lengths ex works are also possible. Standard holding temperatures are 30 °C, 100 °C and 120 °C at -20 °C ambient temperature; up to 150 °C and solutions up to -52 °C are available on request.
Note: the line offers no protection against electrostatic charging. For applications where this is required, the PSG Process Extruded ATEX² (Ex IIB) and ATEX³ (Ex IIC) versions are available.
Properties
- Certified for use in Ex zones 1 and 2
- No temperature controller needed
- Raychem® ATEX-certified self-regulating heating cables
- Holding temperature 30 / 100 / 120 °C (at -20 °C ambient), optionally up to 150 °C
- Available up to 300 metres in one piece
- Freely cuttable on site or ready-made ex works
- Thick-walled extruded outer jacket: TPU, PE or PVC (flame-retardant, weather-resistant)
- Outer diameter: 40 mm (30/100 °C) or 44 mm (120 °C)
- Inner tube of PTFE, PFA, stainless steel or special alloy
- Degree of protection IP64
- Ambient temperature: -20 to +65 °C
- Up to 12 inner tubes as an option
- Replaceable inner tubes as an option
- Power supply: 230 V 50/60 Hz (optional 120 V)
ATEX certification of heating cable
| Holding temperature | Cable type | Ex class | Temperature class |
|---|
| 30 °C | 5BTV | II 2G Ex e IIC / II 2D Ex tD A21 IP66 | T6 |
| 100 °C | 12XTV | II 2G Ex e IIC / II 2D Ex tD A21 IP66 | T3 |
| 120 °C | 15XTV | II 2G Ex e IIC / II 2D Ex tD A21 IP66 | T3 |
Technical specifications
| Feature | 30 °C | 100 °C | 120 °C |
|---|
| Heating cable type | 5BTV | 12XTV | 15XTV |
| Insulation thickness | 10 mm | 10 mm | 14 mm |
| Outer diameter | 40 mm | 40 mm | 44 mm |
| Max. power (ta +10 °C) | 16 W/m | 38 W/m | 47 W/m |
| Max. heating circuit (32A) | 160 m | 135 m | 105 m |
| Max. operating pressure PTFE DN4/6 | 10 bar | 8 bar | 6 bar |
| Max. operating pressure RVS316L | 400 bar | 400 bar | 400 bar |
