Intended Use; Installation And Start-Up - turck FCS-N1/2A4-NAEX0 Betriebsanleitung

D102315 1703 EN
Instruction manual
Flow sensor Ex Device Category 1
FCS-N1/2A4-NAEX0

Intended use

The sensor is used to measure flow speeds in fluids in hazardous areas with potentially explosive gas and dust
atmosphere.
The measuring tip of the sensor's housing can be immersed in hazardous areas with potentially explosive gas
atmosphere that require equipment for zone 0. The housing with its electrical connections can be installed in hazardous
areas with potentially explosive gas atmosphere that require equipment for zone 1.
The complete sensor housing can be used in hazardous areas with potentially explosive dust atmosphere that require
equipment for zone 20.
The measurement probe may only be connected to an electronic evaluation device that has a valid EU type examination
certificate for hazardous areas with potentially explosive gas and dust atmosphere, and that does not exceed the
sensor's electrical limits.
If there are additional regulations for the particular design regarding the installation, they must be observed as well.
Installation and startup

Only professionals with sufficient knowledge (e.g. EN 60079-14) are allowed to install and operate the sensor.

Make sure that the sensor is used only in the area of application corresponding to its Ex marking.

Comply with the national regulations and installation provisions (e.g. EN 60079-14).

Install the sensor on a fixture that is earthed.

Protect the sensor from mechanical damage.

Observe maximum values for capacity and inductivity of connected evaluation device.

Observe maximum resistance of 3 Ω of cable between sensor and evaluation device.

Install cables according to the applicable regulations and protect them from damage.

Avoid static charge on plastic parts and cables.

Use shielded cable for extension of connection cable.

Prior to operation, check corrosion protection and pressure resistance of the seal.

Protect the sensor with PTFE housing from mechanical damage and direct UV radiation.

Use wiring diagrams and drawings according to the intended use.
Maintenance, repairs and troubleshooting

Prevent dust from covering the sensor, i.e. by regularly cleaning it.

Regularly clean sensors that are permanently or temporarily in contact with the medium.

Take safety precautions before installing and uninstalling the sensor, e.g. shut off all lines or switch off the system.

The device must only be repaired by Turck. When returning to Turck, refer to our return policies.

Request data sheets or EU type examination certificates from the manufacturer as needed.

Devices must be properly disposed of and must not be included in general household waste.
Specific conditions
When operating sensors with housings made of titanium, ensure that there are no particles present in the flow which
can cause ignition by impact or friction. Protect the sensor from mechanical damage.
Hans Turck GmbH & Co. KG | Witzlebenstraße 7 | 45472 Mülheim an der Ruhr | Germany | T +49 208 4952-0 | www.turck.com 1