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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.
Is a CTI Linear Heat Detector compatible with other initiating devices?
No. Unlike our Digital (PHSC) Linear Heat Detector, which is compatible with any normally open switch type initiating devices, CTI Linear Heat Detectors are not. Only CTI Linear Heat Detectors can be monitored by the CTM-530 Interface Module.
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.
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 .
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.