How are transmitters classified by output signal type? There are many kinds of transmitters and different types of classifications for different functions. Then the transmitter will press
How are output signal types classified? Technical personnel of electric power transmitter share with you:
1. The current output transmitter has the property of constant current source, and the internal resistance of constant current source is very large. When the input of PLC analog quantity input module is current, input
The impedance is low, and the interference voltage generated by the interference signal on the circuit is low, so the analog current signal is suitable for remote transmission
The signal line of shielded cable can reach hundreds of meters.
The standard of current signal is 0 ~ 10 mA, 0 ~ 20 mA, 4 ~ 20 mA, the preferred is 4 ~ 20 mA, 0 mA is usually used for circuit failure or power supply reasons
Obstacle indicating signal.
2. The voltage output transmitter has the property of constant voltage source. The resistance of the voltage input end of the PLC analog quantity input module is high if the transmission distance is far
, small interference signal current will generate high interference voltage in the input impedance of the module, so the remote transmission of analog voltage signal resistance
Poor spoiler capability.
However, it is suitable for sending the same signal to multiple instruments in parallel. The installation is simple.
The pressure tolerance requirement of the output level is reduced, which improves the reliability of the instrument. The range of voltage signal is 1 ~ 5v, 0 ~ 10v, 1 ~ 10v
, 1 ~ 5 V, 0 ~ 10 V.
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