Linear Heat Sensing Cable System

Product Details:

A Linear Heat Sensing Cable is a highly reliable and effective fire detection solution for large scale commercial and industrial premises.

The thermistor elements are sensitive to temperature changes, and in the event of a fire, the heat causes the resistance of the thermistor to change. This change in resistance triggers the fire alarm system and alerts the occupants of the building.

The Linear Heat Sensing Cable is an ideal solution for large areas that are difficult to protect with conventional smoke detectors.

It is also suitable for use in hazardous environments, where traditional fire detection methods may not be appropriate.

This cable is flexible, durable and can be easily installed and integrated into most fire alarm systems.

Cable Tunnels, Ducts & Mezzanines
Escalators & Moving Walkways
Petrochemical Storage Tanks / Rim Seal Protection
Paint Shops & Spray Booths
Conveyors - Coal, Wood Sulphur etc
Ceiling Voids & Attic Spaces
Road & Rail Tunnel Carriageways
Nuclear Reactor Plant Areas
Refrigerated Stores & Cold Rooms
Electrical Control & Switchgear Cabinets
Warehouse High Rise Pallet Racking
Oil Rigs & Off Shore Platforms
Fume Cupboards & Glove Boxes Grain Silos & Agricultural Storage
Road / Rail Vehicle Engine Compartments
Steam pipe Leeks & Trace Heating Faults
Product Lines - Flanges, Valves & Pumps
Computer Room under Floor Cable Voids

Additional Information:

• Production Capacity: 50000
• Delivery Time: 15 DAYS
• Packaging Details: ROLL PACKING

Product Details:

In line with clients' variegated requirements, we bring forth a distinguished collection of Analogue Linear Heat Detection Cable. Due to the integrating effect of these cable is able to detect either a hot spot or a lower level of temperature increase over its total length. Our offered heat detection cable senses temperature variations by continuously monitoring the resistance of specially doped negative temperature coefficient (N.T.C.) polymeric insulation.

Features:

Monitors precise point of risk
Recoverable after operation
Sensitive to small temperature variations
Analogue Linear Temperature Detection:

Analogue cable senses temperature variations by continuously monitoring the resistance of specially doped Negative Temperature Coefficient (N.T.C.) polymeric insulation
A change in temperature produces a relative change in resistance between the two loops within the sensor cable – as temperature increases, resistance is lowered
This change is monitored by an LHD control unit, which actuates an alarm signal at a pre-determined level
The integrating effect of sensor cable enables it to detect either a hot spot or a lower level of temperature increase over its total length
Linear Heat Detection System:

Provided the sensor cable has not been directly subjected to temperatures greater than 120°C for excessive periods, it will recover to an alert condition after activating an alarm
Upon destruction, the cable fails permanently into the alarm state
Benefits:

Flexible in installation
Recoverable after operation
Monitors precise point of risk
Sensitive to small temperature variations
Mechanical/environmental protection options
Applications:

Rack storage
Escalators
Cable trays
Conveyors
Floating roof tanks
Covered car parks
Other Details:

At one end of the sensor cable, the four conductors are connected to an LHD control unit (optionally via a junction box)
At the outer end, the conductors are joined and hermetically sealed to form two loops
Both loops are continuously monitored for open and short circuit faults
A breakage or disconnection of either loop initiates a fault signal in the control unit
Extra mechanical or environmental protection can be provided by the addition of a nylon coating or bronze braiding

Product Details:

By utilizing our years of experience, we bring forth a qualitative array of LHS Cable. This heat detection cable is demanded in a wide variety of applications but is particularly suited where there is harsh environmental condition. Offered cable utilized for electrical control & switchgear cabinets, warehouse high rise pallet racking, oil rigs & off shore platforms. The primary mechanism of LHDC is that the inner core insulating polymer is specially formulated such that it plasticizes at a specific temperature.

Features:

Compatible with many existing zone monitors
Simple switch to operate a relay
UL Listed

Other Details:

Early Detection of hazards at temperatures well below flame point
Rugged construction—Stainless Steel outer sheath available (Optional)
Fixed Alarm Trigger Temperature
Compatible with many existing zone monitors / Control Equipment
Intrinsically Safe Configurable for Hazardous Areas (Devices to be purchased separately)
UL Listed
Extensive single zonal lengths of the LHDC Digital may be installed with the ability to trigger alarms for hot spots occurring on very small sections of the overall cable
The Linear Heat Detection Cable may be employed in a wide variety of applications but is particularly suited where there is harsh environmental condition, a physical or hazardous maintenance access constraint to protect the area, and / or a requirement to cost effectively install detection in close proximity to the risk(s)
The primary mechanism of LHDC is that the inner core insulating polymer is specially formulated such that it plasticizes at a specific temperature

Cable Construction:

The Digital Linear Heat Detection Cable comprises of a twisted pair twin core cable
Each core is of tinned copper coated spring steel and has a special heat reactive polymer insulation
The cable has an overall protective jacket / sheath
LHDC Digital may be used as a simple switch to operate a relay etc
However in most installations the minimum requirement is that the LHDC circuit is monitored for disconnections by means of EOL device and an appropriate fire alarm channel or address loop interface unit

Applications:

Cable Tunnels, Ducts & Mezzanines
Escalators & Moving Walkways
Petrochemical Storage Tanks / Rim Seal Protection
Paint Shops & Spray Booths
Conveyors - Coal, Wood Sulphur etc
Ceiling Voids & Attic Spaces
Road & Rail Tunnel Carriageways
Nuclear Reactor Plant Areas
Refrigerated Stores & Cold Rooms
Electrical Control & Switchgear Cabinets
Warehouse High Rise Pallet Racking
Oil Rigs & Off Shore Platforms
Fume Cupboards & Glove Boxes
Grain Silos & Agricultural Storage
Road / Rail Vehicle Engine Compartments
Steam pipe Leeks & Trace Heating Faults
Product Lines - Flanges, Valves & Pumps
Computer Room under Floor Cable Voids

Additional Information:

• Delivery Time: 2 weeks
• Packaging Details: Roll packing

Product Details:

Our organization has gained recognition as the affluent manufacturer and supplier of LHS Cable Digital Interface Module that is certified to be fully compatible with SIL 2 certified systems. The offered module is manufactured to monitor a length of digital linear heat detection cable (LHDC) for both a fire condition, and fault status. This module is has been specifically designed in a DIN rail format to allow it to be used in a variety of discrete housings or integrated multi zone control panels.

Features:

Indicators: Alarm: Red - 2 off
Sturdily built
Signaling of fire and fault status is generated by means of volt free contacts
Barrier:

SIL 2 certified
Fault monitoring of LHDC for open circuit conditions
LED Indication of Fire, Fault & Supply status
Integral Test & Reset push-buttons.
Volt free contact outputs for Fire and Fault
Indicator and control switch connections for local fascia implementation DIN rail Mounting
Other Details:

The module is designed to monitor a length of Digital Linear Heat Detection Cable (LHDC) for both a fire condition, and fault status (open circuit)
The DIM module is certified to be fully compatible with SIL 2 certified systems
Digital LHDC may be employed in lengths up to 2Km when using the module
Signaling of fire and fault status is generated by means of volt free contacts
The module has been specifically designed in a DIN rail format to allow it to be used in a variety of discrete housings or integrated multi zone control panels
We complete range of special build panels which can incorporate this module for projects that require unique and tailored solutions
Specification:

Dimensions (WHD): 90mm x 71mm x 58mm
Supply Voltage: 21-30 Vdc
Supply Current: LHDC Terminator:3K3 End Of Line resistor
Indicators: Alarm: Red - 2 off
Fault: Yellow - 1 off
Supply: Green - 1 off
Push-buttons: Alarm Test
Fault Test / Reset
Relay Contacts: Alarm - changeover - 2 sets
Fault - changeover - 1 set
Lamp Outputs (O/C type): Alarm - switch to 0V-100mA
Fault - switch to 0V-100mA
Remote Inputs: Reset
Lamp Test
Applications:

Cables, Tunnels, Ducts and Mezzanines
Escalators and Moving Walkways
Petrochemical Storage Tanks / Rim Seal Protection
Refrigerated Stores and Cold Rooms
Ceiling Voids and Attic Spaces
Conveyor and Bearing Protection
Car Parks and Open Storage Areas
Warehouse and Racking Protection