Cavi di bassa, media e alta tensione

Oil&Gas Onshore Instrumentation
Nexans fornisce una vasta gamma di cavi per la trasmissione e distribuzione. Per le raffinerie, possono essere protetti efficacemente per resistere all'aggressione dai prodotti chimici dannosi.

Nexans sta' fornendo cavi di strumentazione e cavi a bassa e media tensione per il complesso petrolchimico franco-giapponese-americano di Q-Chem nel Qatar; inoltre equipaggia la Exxon Mobil in Francia, a N-D-de-Granvenchon con cavi BT e di strumentazione

Cables Solutions

Instrumentation cables
Cavi d'uso industriale/Oil & Gas - Petrochemical dedicated cables

These cables are used to transmit analogue or digital signals in measurement and process control. Unarmoured cables can be used where there is no risk of mechanical damages.

Armoured cables are well adapted to underground use in industrial applications where chemical and mechanical protection ar needed. Lead covered and armoured cables are hydrocarbons resistant and have an enhanced resistance to aromatics. The Hypron® types offer an alternative to lead caveved cables.

AFNOR NF M 87 202 (250 V) is PVC insulation with PVC outer sheath type.
PAS 5308 (300/500 V) and EN 50288-7 (170/300 V) are PVC insulation with PVC outer sheath and XLPE, silicone and Mica tape/XLPE insulation with PVC sheath types.

Thermocouple cables
Cavi d'uso industriale/Oil & Gas - Petrochemical dedicated cables

Thermocouples are a widely used type of temperature sensor. They can measure a wide range of temperatures, they are very simple in operation and measure the temperature between two points.

A thermocouple construction consists of two dissimilar metal wire welded together at the measuring point and insulated from each other. It will usually have an outer protection sheath.

If two conductors of different materials are joined at one point, an EMF (electromotrice force) is created between the open ends which is dependent upon the temperature of the junction. In most applications, one of the junctions — the "cold junction" — is maintained at a known (reference) temperature, while the other end is attached to a probe. Another temperature sensor will measure the temperature at this point, so that the temperature at the probe tip can be calculated.

Usually the thermocouple is attached to the indicating device by a special wire...