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Vortex flowmeter two-wire circuit wiring description VT2WE two-wire circuit wiring
1, the main power supply and output signal terminals (left 2 position hanging frame spin type terminal)
“-â€: 4~20mA current output “+â€: 15~24V power “+†terminal “+†connected +24V external power supply, current output from “-†end to the sampling resistance of computer or display meter, After being loaded by a load such as a sampling resistor, it flows back to the "-" terminal of the power supply.
Auxiliary wiring (3-bit small terminal) pulse output wiring:
V+: “+†terminal (+12V) connected to the pulse output power supply
F: is the pulse output signal end
0: Connect the pulse output power supply "-" terminal This pulse output must be used in the case of main current loop power supply. The output is uncorrected optical isolation original pulse with 50Hz cut, usually used at the standard; output signal is included Open collector output of 1K5 pull-up resistor. The wiring diagram of the system can be seen in the figure "VT2WE two-wire circuit wiring diagram". The explosion-proof mark of the intrinsically safe explosion-proof vortex flowmeter is Exia II CT2-T6. It must be equipped with an explosion-proof safety barrier between the display instrument or computer and other related equipment. . Explosion-proof vortex flowmeters are installed in hazardous locations. Safety barriers, display instruments, power supplies, computers and other related equipment must be installed in a safe place.