CTM-530 Module (CTI)

CTM-530 Module (CTI)

CTM-530 Module and the CTI Linear Heat Detector were invented to reduce incidences of false alarms due to mechanical damage to the detector. Using thermocouple technology, a CTI Linear Heat Detector confirms whether or not a true alarm condition exists. The CTI Linear Heat Detector control module continuously monitors the detectors’ continuity. In the case of an open circuit, the module reports an open fault condition.

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    Features and specifications include:

    • Temperature verification and short circuit discrimination
    • Engineered and designed for use with suppression systems
    • MUST be connected to a CTI Linear Heat Detector
    • Integrated Protectowire Alarm Point Location Meter with field calibration
    • CTM-530 control module can support up to 4,000 feet (1,220 meters) of CTI Linear Heat Detector per zone
    • Modbus over RS-485 communications
    • 4-20 mA outputs for status and alarm point location
    • 64 event history log (FIFO)
    • 4×20 LED backlit LCD display
    • Approved for use in hazardous locations

    CTI Series (CTI & CTM-530)

    Using thermocouple technology, the CTI Linear Heat Detector can distinguish between a short caused by physical damage or a short caused by heat actuation. Dissimilar metal conductors enable the CTI Linear Heat Detector to determine the exact alarm point location as well as the temperature of any short. If the temperature of the short is below the linear heat detector’s fixed temperature, a short fault or trouble condition is initiated. If the temperature of the short is above the linear heat detector’s fixed temperature, an alarm condition is initiated.

    FAQ's
    What listings and or approvals does the CTI product carry?
    Currently the CTI product line carries Factory Mutual Approval (FM), Underwriters Laboratories Listing (UL) and California State Fire Marshal (CSFM) approval.
    Are CTI Linear Heat Detectors compatible with standard mounting hardware?
    Yes. All Protectowire CTI Linear Heat Detectors are compatible with the same mounting hardware and fixings used for our standard Digital Linear Heat Detectors. The only exception is that all terminations must be made using “T” type thermocouple terminal blocks. Protectowire provides a full line of splicing terminals and junction boxes specifically designed to be compatible with our CTI Linear Heat Detectors .
    Can CTI Linear Heat Detectors Be Installed in Classified Hazardous Locations?
    Yes, but only when using the CTM-530E-I interface module and if the installation is in compliance with Protectowire Control Drawing IL-1622. The CTM-530E-I is FM-approved and provides intrinsically safe connections suitable for monitoring CTI Linear Heat Detectors installed in Class I, II or III, Division I, applicable groups A, B C, D, E, F and G classified areas. Protectowire Control Drawing IL-1622 provides instruction on how to properly install both the CTM-530E-I and CTI Linear Heat Detector to comply with the requirements for intrinsically safe circuitry.
    Do CTI Linear Heat Detectors require compatible field wiring?
    Yes. Typically the CTI Linear Heat Detector will connect directly to the CTM-530 Interface Module. When this is not possible, “T” type extension cable can be used to connect the CTI Linear Heat Detector to the CTM-530 Interface Module. For all CTI type detectors, twisted “T” type extension grade thermocouple wire is required for use as interconnecting wire on the detection circuit. Minimum conductor size is 20AWG (0.812mm), or as required by local code.
    Does the CTI Linear Heat Detector require compatible termination hardware?
    Yes. CTI Linear Heat Detectors are constructed using “T” type thermocouple conductors which require all terminations be made via “T” type thermocouple terminals. This is to ensure the temperature measurements made by the CTM-530, which provide short circuit discrimination, are as accurate as possible. Protectowire provides a full line of splice terminals and junction boxes specifically designed for compatibility with our CTI Linear Heat Detectors.

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