"The ProReact range of digital linear heat detection cables is designed to trigger a response when a specific temperature is reached. If the temperature surrounding the cable reaches the activation temperature the two cores quickly come into contact and trigger an alarm. These cables are known as ‘digital’ because they are ‘off’ below the activation temperature and irreversibly switch ‘on’ when the activation temperature is reached." The ProReact range of digital linear heat detection cables is designed to trigger a response when a specific temperature is reached. If the temperature surrounding the cable reaches the activation temperature the two cores quickly come into contact and trigger an alarm. These cables are known as “digital” because they are “off” below the activation temperature and irreversibly switch “on” when the activation temperature is reached. The following alarm temperatures are available:
Analogue linear heat detection systems comprise of a control or interface unit, a zone of a four core analogue linear heat detection cable and an end of line unit. The system identifies fires or overheat conditions by continuously measuring changes in electrical resistance along the detection cable. An alarm is triggered once the resistance along the cable falls below a set threshold, which is determined by the desired alarm temperature (chosen by the user). For ProReact Analogue Linear Heat Detection systems, users can also select a pre-alarm option if they would like an early indication of rising temperature. ProReact Analogue Linear Heat Detection systems can also be reset following a fire or overheat, rather than being replaced, providing the detection cable is not exposed to a temperature above 125⁰C.
The UL approved ProReact Digital Interface Monitor Module was designed to provide additional functionality when used in conjunction with ProReact Digital, ProReact Plus Digital or ProReact VHT LHD cable. It is an optional accessory but is highly recommended given the benefits it delivers to clients. The ProReact Digital Interface Monitor Module can monitor up to 6,000 metres of digital linear heat detection cable across two zones and contains an in-built display showing the state of each zone, including the distance in metres and feet to the alarm point if an alarm is triggered. It also includes an RS-485 Modbus RTU output for integration with a PLC or SCADA system.
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