Digital LHD - Linesense H8028

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Linesense H8028
LINEAR HEAT DETECTION (LHD)
(105°C, 221°F Nominal)

The technology behind the digital Linear Heat Detection (LHD) cable, makes it a product of choice for difficult and challenging applications where other technologies may struggle.

It is easy to install and requires low maintenance therefore providing a cost effective solution where project expenditure requires to be kept at a minumum.

The sensing cable is created from a pair of twisted steel conductors, with temperature sensitive insulation. And an overal PVC outer sleeve. When the temperature sensitive insulation reaches it's predetermined alarm temperature the two conductors short together providing the digital or switched signal.

The LHD cable can be connected to any unit monitoring a switched signal, i.e. Conventional fire panel, addressable switch monitor unit or PLC.

H8028N Linear Heat Detection Cable

The PVC outer sleeve of the Linesense H8028N offers good UV resistance, allowing it to be deployed in external applications.

Features

  • Simple digital switch operation.
  • Continuous sensing along the total length of the element.
  • Fixed alarm temperature operation.
  • Compatible with switch monitoring units.
  • Suitable for use in Hazardous areas.
  • UV resistant PVC outer sleeve.
  • Rugged and durable construction.
  • Simple maintenance free installation.
  • Small diameter and bend radius.
  • FM Approved.

Applications

 

Technical Data

Specifications

Alarm temperature:

 105°C

Max amb temperature:

 70°C

Min operating temperature:

 -30°C

Min installation temperature:

 0°C

 

Electrical

Resistance:

100 ohms / Km @ 20°C

Capacitance:

45 pF to 130 pF

Inductance:

0.74 ųH to 1.3 uH

Voltage rating:

110vdc 1amp

Time to detect a small flame:

12 sec (Flame touching)

 

Mechanical

Outside diameter:

 4.25mm

Colour:

 Black

Number of cores:

2

Core diameters:

0.9mm

Core colours:

Black and red

Minimum bend radius:

50mm (Cold store 100mm)

Weight:

25.0Kg/Km on the reel (weight of reel typically 2Kg)

Ordering Info

Part Number

Description

51100-105

Linesense H8028N sensing cable 105°C Alarm temperature Black PVC outer sleeve. (ordered by the meter)

Optional

52100-001

DLI-2K Digital Location Interface 2Km

52100-002

DLI-10K Digital Location Interface 10 Km

52101-001

DIM Digital Interface Module DIN rail mounted

53000-001

Portable test oven 1m

 

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