Model 722TXC High Speed Dual Channel Detector |
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| The Naztec Model 722 high-speed dual channel Inductive Loop Detector uses state of the art technology to provide a robust and reliable rack mounted vehicle detection device. Automatic self-tuning and fifteen selectable sensitivity levels ensure trouble-free operation. Crosstalk between adjacent loops is minimized by selecting one of four different oscillator frequencies for each loop. Crosstalk between adjacent channels is eliminated by sequential scanning. As each loop is scanned, the other 3 channels are turned off. The Model 722 is capable of up to four operating modes. In Pulse Mode, the detector provides a 150 millisecond pulse in response to a detection, useful for counting and volume calculations. In Presence Mode, the output from the detector is active as long as a vehicle is present on the loop. In Short Presence Mode*, presence detection is limited to 20 minutes in length. In Presence Timing Mode*, presence detection length is programmable in 2 second intervals from 2 to 2022 seconds. The Model 722 detector also provides a count output pin for each channel that outputs a 150 ms pulse each time a car enters the loop. |
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The Delay Timing option causes the output to be delayed up to 63 seconds after the beginning of the detection. The Extend Timing option allows the output to remain active up to 15.75 seconds after the end of the detection. In pulse mode, the minimum gap between vehicles can be set from .5 seconds to 2.25 seconds. The use of separate LEDs for detection and fault information eases setup and diagnostics. The DETECT LED provides separate indications for detect, delay, and extension. The FAULT LED uses 8 Hz, 2 Hz, 1/2 Hz, and continuous-on modes to indicate loop shorted, opened, inductance change of more than 25%, and watchdog reset, respectively. An RS232 communications port is provided, enabling the detector to be scanned for various detection state, status, and programmed parameters. |
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Features
* Denotes optional features |
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Ordering information Please contact Sales at Fortran Traffic Systems Limited for ordering information. |