This instrument is specially crafted for the user-specific speed, counting tray-loading devices, it can also provide pulse signals from the three probes, including two for the gun, one for the aggregate, a total of seven LED instrument display, switching operation through the touch panel, select the three signals of a road for the show, not selected Èr work as usual, instrument fuse in the machine, replace the fuse need to open the case.
Instrument adaptation sensor: simultaneous access to three HAL-506 Hall switch sensor;
Speed part of the pulse number per revolution: a pulse signal
Frequency range: 0.33Hz ~ 166Hz
Speed part of the display accuracy: better than 0.1%
Range: 20r/min ~ 9999r/min;
Some pulse count equivalent: 10 200 pulses for each received considerable 1000ml;
Power supply: 220VAC 50Hz ~ 60Hz, 10VA;
Dimensions: (80 high × 160 wide × 160 deep) mm
Hole size: (76 high × 152 W) mm
Use environment: temperature -5 ℃ ~ 45 ℃, relative humidity less than 85%
Non-corrosive explosive gas occasions, can be connected to work.
□ Work
Instrument by the single microprocessor core 89C2051, external scanning for the seven LED display, four touch switches to set, in fact, show only a clear choice and count two touch switch, hardware watchdog for external start the software, three-way light separate pulse input, the activation of CPU speed Èr external interrupt, all the way to an even count the external CPU can access the counter. Speed with MT, even if only one pulse per revolution signal, still guarantee the accuracy better than 0.1%, and the resolution of 1r/min. When the three-way probe the same time work, the instrument within the corresponding count, speed unit under the command of the CPU are at work, as only a display window, it can only be specified by the user which way to push display.
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