The hermetically sealed sensor cable contains small hybrid circuits which, depending on the application, are placed at selectable intervals. The hybrids, which contain an integrated circuit with a defined address and a semiconductor temperature sensor, are electrically connected by a flat flexible cable.
The flat flexible cable and temperature measuring points, are surrounded by a filling material, which in turn is covered by an aluminium shield protecting against EMI. A flame retarding, halogen free cable sheath completes the sealed structure of the sensor cable.
The cable can measure tempera-tures in a -40°C to +85°C (for short periods +200°C) range, with a resolution of 0,1°.
On account of it's maintenance- and adjustment-free operation, the sensor cable can be used in areas which are not or only partly accessible during normal operation.
Due to the constant interrogation of the temperature sensors by the control unit, a functional check is always given.
Self locking clamps are usually used to mount the cable. The relative stiffness of the cable allows a spacing of one meter between clamps.
Damage cable sections can easily be repaired by cutting out the damaged section and connecting a new piece in it's place with the aid of sleeve joints.
The LIST® sensor cable system is a Verband der Schadenversicherer (VdS) tested and approved product with the approval number G294051.
* Hybrid circuits mounted on a 4 core flat flexible cable
* Filling materiel with strain relief
* Cable sheath
Freely selectable; min. 0,5 m Standard spacing: 1, 2, 3, 4, 5, 8 m.
A 4-digit consecutive number on the cable sheath marks the position of each sensor in the cable.
Diameter: approx. 18 mm Min. bending radius: 0,30 m Max. continuous length: 2.000 m Cable sheath: halogen free, flame retarding, acc. to DIN VDE 0207, part 24 Sheath colour: grey Operating temperature range: -40°C ... +85°C short period +200°C Mounting temperature: 7 +10°C
Measuring Point Specifications
Measuring range: -40°C ... +200°C Resolution: 0,1° Addressing: 0 ... 1023
The sensor cable is delivered onrented, wooden, cable drums belonging to the Kabeltrommelgesellschaft (KTG). The delivery takesplace according KTG terms.
As a rule, the following drums areused for sensor cable deliveries:up to 600 m:Ø 1000 mm, W=685 mm, wt=71 kgup to 1.000 m:Ø 1200 mm, W=870 mm, wt=144 kgup to 1.500 m:Ø 1400 mm, W=870 mm, wt=175 kgup to 2.000 m:Ø 1600 mm, W=1100 mm, wt=280 kg
Sensor cable weight: 0,45 kg/m