Tratos is an International manufacturer and supplier of Instrumentation Cables. The existing national and international instrumentation cables offer only partial solutions, which are often not specialised enough to satisfy the customer's requirements.
Instrumentation Cables Usage
Instrumentation cables are often used within systems where there is a necessity for signals to be transferred between various components, as their design means the transmitted signal is protected from internal and external interferences and disturbances. They are principally used in the control of industrial processes, chemical and petroleum plants and electrical power plants.
CONSTRUCTION AND PERFORMANCES
In response to some customers’ questions:
When an individual screen is required, on each pair, triple or quad, it is normally formed by an aluminium tape bonded to a polyester tape helically or longitudinally wound over the conductors with an overlap of approximately 25% in order to ensure total coverageeven when the cable bends. The thickness of the tapes is established by the relevant technical standard. A tinned copper drain wire is applied, which is in contact with the metallic part. Other tapes made of polyester or a similar material can be used as screening components. In some circumstances, copper screens may be used (wires or tapes) or semi conductive layers with a PVC or polyester base for particular applications.
The number of pairs, triples or quads, screened or unscreened, which compose the cable are assembled together, normally concentrically and in alternative layers. Fillers of non-hygroscopic materials may be used to improve the roundness of the cable. A taping is applied over the last layer.
The general or overall screen is normally formed by an aluminium/polyester tape, wrapped in either a spiral or longitudinal formation with an overlap of about 25% in order to ensure total coverage even when the cable bends. The thickness of the tapes are established by the technical norm of reference. A tinned copper drain wire is applied, which is in contact with the metallic part. Other tapes made of polyester or a
In particular cases, instrumentation cables can be supplied jelly-filled – that is to say, with fillers which are applied longitudinally to prevent the penetration of water and other fluids.
When cables are armoured, an internal sheath is applied over the grouped pairs, triples and quads or over the collective screen. The material of the sheath may be PVC, polyethylene, silicone, LSHF compound or other special material specifically selected to give the cable the exact properties required by the user.