The ASC-0168 Series Line Type Heat Detector(LHD) is designed to provide early detection of fire conditions and overheating “Hot Spots” in situations  where other forms of fire and heat detection would not be viable, either due to inability to sustain the environmental requirements or through prohibitive costs. 


    The combination of the LDH and ASC-8168 Series Monitor/Control Unit(MCU)  can adapt to a variety of environmental conditions, because of a feature called “Self-Adapting Compensation”. Self-Adapting Compensation assures the integrity of the alarm temperature set points throughout the entire length of the cable. The feature virtually eliminates false alarms and greatly enhances reliability by compensating for external temperature variation.


    In addition to the features of the of the LDH and ASC-8168 Series Monitor/Control UnitThe combination of the ASC-0168LL LDH and ASC-8168LL Series Monitor/Control Unit (MCU) can determine the distance to a “Hot Spot” or fire point along the length of the sensor cable. 



    ·         Early detection of hazards at temperatures well below flame point.

    ·         Linear Heat Detecting Cable fire & fault monitoring with Self-Adaptive Compensation.

    ·         Two (adjustable) levels of activation (Pre-Alarm and Alarm) for Rate-of-Rise and set point fixed temperature alarm.

    ·         The /L type LHD can determine the distance to overheated “Hot Spots” or fire points.

    ·         Programming of the system can be done by a laptop computer, very quickly and conveniently.

    ·         Equivalent temperature displaying.

    ·         Rugged construction for use in harsh environments.

    ·         Ease of installation - wide range of options available.

    ·         Compatible with many existing zone monitors / control equipments.

    ·         Recoverable, resetable and testable operations - unlike one shot Digital LHDC.

    ·         Intrinsically Safe configurable for Hazardous Areas.



    Table 1


    ASC-0168 Series Analog Line Type Heat Detector

    Fixed Temperature Detector

    Rate-of-Rise Heat Detector

    Fixed Temperature and Rate-of-Rise Heat Detector

    Sensitive Cable




    Zone Monitor Unit




    Main Parameter

    Alarm Temperature Range for 1m: 68~158

    Rate-of-Rise Temperature Range:8.3~30/min

    Alarm Temperature Range for 1m: 68~158.

    Rate-of-Rise Temperature Range:8.3~30/min


    Table 2


    Line Type Heat Sensor Cable (LHDC)

    High Temperature PVC


    Bronze Braid for Explosion and EM-Proof

    Part Number




    Packaging Length

    400m, 600m or 800m

    External Diameter (nominal)


    3.2 mm

    3.8 mm

    Minimum Tensile Strength




    Ambient Temperature





    Cores 2 and 3: Specially Doped Polymer,

    Cores 1 and 4: PVC,  Other Cores(if have): Special Material

    Core Colours

    1= Red2=White3= Blue4= Orange; 5 or 6(if have)= Yellow or Green

    Service Life

    Up to 100°C: Unlimited

    Voltage Proof

    10 kV between outer sheath and a conductor

    Maximum Distance for Laying

    9m (Refer to UL521 and FM3210)