ABOUT
Digital Linear Heat Sensing Cables
Introduction
Digital Linear heat sensing cable is a specialised flexible fire detection cable capable of detecting fire anywhere along its length. This makes it essential for critical areas where early fire detection is important. The digital linear heat sensing cable consists of twisted pair of extremely low resistance tri metallic conductors which can measure temperature across distances up to 3000m. Insulated with 1.1 kV tested advance thermal polymers, they can operate reliably in ambient temperature within 68°C to 78°C or 88°C to 105°C, making them ideal for industrial applications.
As a leading digital linear heat sensing cable manufacturers, our cables come with a minimum bending radius of 50 mm for temperature above 0°C and 100 mm for temperature below 0°C, and precise resistance characteristics of 100 Ohm/km, capable of rapid fire response in diverse installations.

About Digital Linear Heat Sensing Cables
Specification of Digital Linear Heat Sensing Cable
| Construction | Dual Insulated, twisted pair tri-metallic cores |
| Insulation | 1.1 Kv tested Advanced Thermal Polymers |
| Wire Overall Diameter | 3.60 mm (Approx) |
| Minimum Bending Radius | 50 mm > 0 Deg C 100 mm < 0 Deg C |
| Ambient Temperature | -68 °C to 78 °C version -88 °C to 105 °C version |
| Maximum Rated Voltage | 30 Vac /42 Vdc |
| Resistance | 100 Ohm/Km |
| Maximum Zone Length | 3000 mtr. |
| Capacitance | 88-150 pF/mtr. |
| Inductance | 540-1050 H/mtr. |
| Outer Color | Red for 68 °C Yellow for 78 °C Light Green for 88 °C Dark Green for 105 °C |
| Available | 200 / 300 / 500 Mtr Length |
Application of Digital Linear Heat Sensing Cable
- Tunnels: Used for continuous monitoring in road and rail tunnels
- Conveyor belt : For fire detection along material handling systems and industrial conveyors
- Floating Roof Storage Tanks: Specialized temperature monitoring for petroleum storage facilities
- Manufacturing: Can detect early fire detection in production facilities and processing areas
- Warehousing: Essential for storage facilities and logistics centers.
- Cable Trays: Protection of electrical distribution systems and power cable installations
Why Tempsens is the Leading Digital Linear Heat Sensing Cable Manufacturer?
- Flexible configurations with zone lengths up to 3000 meters
- Three decades of experience in thermal and cable solutions
- 1.1 KV tested insulation ensuring reliability and long-term performance
- Flexible configurations with zone lengths up to 3000 metersh
FAQ
Frequently Asked Questions
Find answers to frequently asked questions related to Digital Linear Heat Sensing Cables.
Minimum bending radius (50-100 mm), correct routing for maximum coverage, and proper mounting height must all be considered when installing a digital linear heat sensing cable. Correct spacing between runs should be maintained, secure fixing at recommended intervals must be achieved, terminate correctly at the control panel, and protect against mechanical stress, extreme or high temperatures, moisture/chemicals, etc.
In India, digital linear heat sensing cable price vary based upon specifications and the length of a cable. Please send your project details (zone size / ambient temperature/installation environment) to our sales team in order to receive a quote based on your project requirments and needs.
