fafnir VISY-Density LPG, Technical Documentation Manual

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FAFNIR GmbH

Schnackenburgallee 149 c

22525 Hamburg

Tel.: +49 / (0)40 / 39 82 07-0

www.fafnir.de

info@fafnir.de
Typ TORRIX Ex C… or TORRIX Ex RS485… or TORRIX Ex TAG… or VISY-Stick … RS485 or VISY-Stick … TLS
Temperature class T
a
T
F
Category 1G or equipment protection level Ga (filling level sensor completely installed in Zone 0)
T4, T3, T2, T1 -20 °C … +60 °C
Category 1/2G or EPL Ga/Gb (sensor head installed in Zone 1, and sensor tube in Zone 0)
T4 -40 °C … +75 °C
-20 °C … +60 °C
T3, T2, T1 -40 °C … +85 °C
Category 2G or EPL Gb (filling level sensor completely installed in Zone 1)
T4 -40 °C … +75 °C -40 °C … +135 °C
T3
-40 °C … +85 °C
-40 °C … +200 °C
T2 -40 °C … +300 °C
T1 -40 °C … +450 °C
Table 4: Operating temperatures of the filling level sensors with 4 to 20 mA, RS485 or TAG interface
Type TORRIX Ex …
Temperature class T
a
T
F
Category 1G or equipment protection level Ga (filling level sensor completely installed in Zone 0)
T4, T3, T2, T1 -20 °C … +60 °C
Category 1/2G or EPL Ga/Gb (sensor head installed in Zone 1, and sensor tube in Zone 0)
T6 -40 °C … +40 °C
-20 °C … +60 °C
T5 -40 °C … +55 °C
T4 -40 °C … +80 °C
T3, T2, T1 -40 °C … +85 °C
Category 2G or EPL Gb (filling level sensor completely installed in Zone 1)
T6 -40 °C … +40 °C -40 °C … +85 °C
-40 °C … +55 °C -40 °C … +100 °C
-40 °C … +80 °C -40 °C … +135 °C
T3
-40 °C … +85 °C
-40 °C … +200 °C
T2 -40 °C … +300 °C
T1 -40 °C … +450 °C
Table 5: Operating temperatures of the level sensors TORRIX Ex ... (4 ... 20 mA interface)
For use in category 1G or 1/2G, the following applies:
The process pressure for the media must be between 0.8 bar and 1.1 bar where explosive vapour-air
mixtures are present. If no explosive mixtures are present, the equipment may also be operated
outside this area according to the manufacturer's specification.
It must be ensured by suitable measures that at no point of the sensor head, the temperature (T
a
) for
the respective temperature class is exceeded.
General information (see also EN 60079-0, section 1):
Zone 0 exists only under atmospheric conditions:
Temperature range: -20 °C … +60 °C
Pressure range: 0.8 bar to 1.1 bar
Oxidants: Air (oxygen content approx. 21 %)