fafnir HART TORRIX, Technical Documentation Manual

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FAFNIR GmbH

Schnackenburgallee 149 c
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22525 Hamburg

Tel.: +49 / (0)40 / 39 82 07-0

www.fafnir.de
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info@fafnir.de
Instructions in accordance with Directive 2014/34/EU TÜV 99 ATEX 1496 X
Filling level sensors type VISY-Stick … and type TORRIX Ex … Edition: 06.2018
I Range of application
The filling level sensors are designed for continuous measurement of liquid levels. Floats are used to
measure the liquid levels. These slide on a sensor tube. For interface or water detection, a second float
can be mounted on the sensor tube. In addition, the density of the liquid can be determined via a density
module. The temperature measuring chain VISY-Stick ... Temp ... is used to measure temperatures at
different altitudes without using floats.
The power supply for the devices VISY-Stick … and the forwarding of the measured data to a superor-
dinate evaluation system is provided by the isolating amplifier VP-… or VPI or, in case of the sensor
VISY-Stick … TLS, e.g. by the TLS-… console from Veeder-Root. If an RS-485 interface is used, the sensor
VISY-Stick … RS485 can be used.
The filling level sensors TORRIX Ex … can be produced with different interfaces. These are, for example,
the interfaces "4 … 20 mA" (TORRIX Ex … and TORRIX Ex C…), "RS-485" (TORRIX Ex RS485…) or TAG
(TORRIX Ex TAG…). The TORRIX Ex SC… filling level sensors are connected to the VP-… or VPI isolating
amplifier.
II Standards
The equipment is designed in accordance with the following European standards
EN 60079-0: 2012 + A11:2013 Equipment - General Requirements
EN 60079-11: 2012 Equipment protection by intrinsic safety "i"
EN 60079-26: 2015 Equipment with Equipment Protection Level (EPL) Ga
III Instructions for safe …
III.a … use
The approval applies to equipment type VISY-Stick … and TORRIX Ex …
The devices are designed as intrinsically safe equipment and are suitable for use in potentially explosive
areas. The "Advanced" types (TORRIX Ex …-A, VISY-Stick Advanced …), the "flexible" types (TORRIX Ex …
Flex, VISY-Stick … Flex …) and the types with plastic coating against very aggressive media (TORRIX Ex
... PL) can be used for all gases of groups IIA and IIB. The temperature measuring chain VISY-Stick ...
Temp ... and all other filling level sensors can be used for all gases of groups IIA, IIB and IIC. In addition,
all level devices may be used for dust groups IIIA, IIIB and IIIC.
To use a non-conductive plastic float in potentially explosive area with gases from the group IIC, the
hazard of static charging must be prevented. Here a few conditions need to be observed:
•
The use of the float in strongly flowing, non-conductive liquids is forbidden;
• There must be no agitator/mixer in the tank;
• Frictions on non-conductive components are to be avoided;
•
The float must not be cleaned in a dry state.