Protectowire Linear HEAT DETECTORS

 The Standard Digital Protectowire Heat Sensitive Cable (PHSC) linear heat detector can best be described as a continuous run of spot heat detectors. It is capable of sensing heat anywhere along its length and initiates an alarm once its fixed activation temperature is reached.

Protectowire Linear Heat Detector is a proprietary cable that  detects heat anywhere along its length. The sensor cable is  comprised of two steel conductors individually insulated with  a heat sensitive polymer. The insulated conductors are twisted  together to impose a spring pressure between them, then  wrapped with a protective tape and finished with an outer  jacket suitable for the environment in which the detector will  be installed.  Protectowire is a fixed temperature digital sensor and  is therefore capable of initiating an alarm once its rated  activation temperature is reached. At the rated temperature,  the heat sensitive polymer insulation yields to the pressure  upon it, permitting the inner conductors to move into contact  with each other thereby initiating an alarm signal. This action  takes place at the first heated point anywhere along the  detector’s length. It does not require a specific length to be  heated in order to initiate an alarm, nor system calibration to  compensate for changes in the installed ambient temperature.  Protectowire Linear Heat Detector provides the advantages of  line coverage with point sensitivity 

Features 

• Detects heat at any point along its length
• Low maintenance
• Outer jackets resist corrosion, chemicals, moisture, and extreme temperatures
• Can be installed close to hazards to provide rapid response
• Long service life

Applications

Linear Heat Detectors are particularly suitable in extremely dangerous environmental conditions such as in the presence of corrosive elements or condensing steams.

Ideally suited to industrial high risk hazards as well as many types  of commercial applications, Protectowire Linear Heat Detector has  unique advantages over other types of detectors, especially when  difficult installation factors or severe environmental conditions are  present.  When used with the appropriate Protectowire control equipment,  the detector will activate a display, showing the location of an  over heat or fire condition anywhere along its length. 

• Cable trays
• Conveyors
• Power distribution 
• Apparatus: switchgear, 
• Transformers, 
• Motor control centers
• Cooling towers
• Warehouses/rack storage
• Mines
• Pipelines
• Bridges, piers, marine  vessels
• Refrigerated storage
• Tank farms
• Aircraft hangars  

The Protectowire family of Confirmed Temperature Initiation  Linear Heat Detectors are advanced multi-sensor detectors  consisting of models with alarm temperatures ranging from  135°F (57°C) to 356°F (180°C). Each detector is comprised of  two special metallic alloy conductors individually insulated with  a heat sensitive polymer. The insulated conductors are twisted  together to impose a spring pressure between them, then  wrapped with a protective tape and finished with a durable  f  lame retardant  outer jacket.  The detectors are fixed temperature digital sensors that are  capable of initiating an alarm signal. Once exposed to the rated  temperature the heat sensitive polymer yields to the inherent  spring tension allowing the conductors to move into contact  with each other, thereby creating a short circuit temperature  measuring junction point. A CTM Module is required to  supervise all CTI Linear Heat Detectors. The CTM interface  module is designed to detect a short circuit and enter a heat  measuring thermocouple mode.  

By entering the thermocouple mode, the interface module is  able to identify the temperature at the short and determine  the type of off-normal condition being created based upon the  alarm temperature threshold of the detector.  If the interface module determines that the temperature at the  short is above the predetermined alarm threshold temperature,  the module initiates an ALARM condition and displays the  location of the alarm if equipped with the Protectowire   Alarm Point Location Meter. If, however, the interface module  determines the temperature is below the alarm temperature  threshold, it initiates a short circuit fault or TROUBLE  condition and displays its location on the Protectowire Alarm  Point Location Meter (if provided) so it can be corrected.  The Protectowire advanced multi-sensor detectors are  the first digital type linear heat detectors to provide true  confirmed temperature initiation and mechanical short circuit  discrimination. They provide reliable temperature response  with verified alarm temperature confirmation for exceptional  false alarm immunity 

Features 

• Uses advanced multi-sensor detection for highest  immunity to false alarms
• Measures and confirms the temperature at the alarm point  to provide true Confirmed Temperature Initiation (CTI). 
• Includes reliable digital operation with separate short  circuit fault identification.
• Distinguishes between short circuits and true alarm  conditions.
• Identifies and displays the location of an overheat or fire  condition anywhere along its length when used with a  Protectowire Alarm Point Location Meter.
• Meets intrinsically safe standards and is FM Approved for  Class I, II and III, Division 1, Groups A, B, C, D, E, F and G  when used with required equipment. 

Applications

Linear Heat Detectors are particularly suitable in extremely dangerous environmental conditions such as in the presence of corrosive elements or condensing steams.

Ideally suited to industrial high risk hazards as well as many types  of commercial applications, Protectowire Linear Heat Detector has  unique advantages over other types of detectors, especially when  difficult installation factors or severe environmental conditions are  present.  When used with the appropriate Protectowire control equipment,  the detector will activate a display, showing the location of an  over heat or fire condition anywhere along its length. 

• Cable trays
• Conveyors
• Power distribution 
• Apparatus: switchgear, 
• Transformers, 
• Motor control centers
• Cooling towers
• Warehouses/rack storage
• Mines
• Pipelines
• Bridges, piers, marine  vessels
• Refrigerated storage
• Tank farms
• Aircraft hangars