Digital LHD - Linesense H8040N

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Linesense H8040N
LINEAR HEAT DETECTION (LHD)
(68°C, 155°F Nominal)

The simple and proven technology of digital Linear Heat Detection (LHD) cable, makes it a product of choice for difficult and challenging applications where other technologies struggle to work.

With it's ease of installation and low maintenance it also provides a cost effective solution where project expenditure requires to be kept at a minumum.

The sensing cable is formed from a pair of twisted steel conductors each with temperature sensitive insulation and then an overall Nylon 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 cable can be connected to any unit capable of monitoring a switched signal, i.e. Conventional fire panel, addressable switch monitor unit or PLC.

H8040N Digital LHD Cable

The nylon outer sleeve of the Linesense H8040N offers good chemical and water resistance, allowing it to be deployed in harsh dirty environments.

Features

  • Simple digital switch operation.
  • Continuous sensing along the total length of the element.
  • Fixed alarm temperature operation.
  • Compatible with switch monitoring units and conventional alarm panels.
  • Suitable for use in Hazardous areas using safety barriers.
  • Chemical & water resistant Rilson outer sleeve.
  • Rugged and durable construction.
  • Simple maintenance free installation.
  • Small diameter and bend radius.
  • FM Approved.

Applications

 

Technical Data

Specifications

Alarm temperature:

 68°C

Max amb temperature:

 45°C

Min operating temperature:

 -40°C

Min installation temperature:

 -15°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:

5 sec (Flame touching)

Mechanical

Outside diameter:

 3.35mm

Colour:

 Black

Number of cores:

2

Core diameters:

0.9mm

Core colours:

Black and red

Minimum bend radius:

50mm (Cold store 100mm)

Weight:

18Kg/Km on the reel (weight of reel typically 2Kg)

Ordering Info

Part Number

Description

51100-068

Linesense H8040N sensing cable 68°C Alarm temperature Black Nylon 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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