Engineer_UA
Member
Hi Gents,
I have an application where I need to provide a 4-wire transmitter with 120VAC power supply. In this setup, I'd provide 120Vac to the "box", which could be a small enclosure that would come with the sensor. This enclosure would provide power to the sensor(powering the loop) and 4-20mA output back to the plant.
I guess I could run the 4-20mA directly from the SCADA RTU to where the sensor is to be located(~300 ft away). Without knowing how the SCADA is configured(sourcing vs sinking) and input impedance, I feel safer with providing an external power supply. I don't have 24VDC available where the sensor is to be installed.
Any information on the vendor would be appreciated. Most sensor that I've used seem to be loop powered directly from PLC/SCADA RTU.
Thanks,
EE
I have an application where I need to provide a 4-wire transmitter with 120VAC power supply. In this setup, I'd provide 120Vac to the "box", which could be a small enclosure that would come with the sensor. This enclosure would provide power to the sensor(powering the loop) and 4-20mA output back to the plant.
I guess I could run the 4-20mA directly from the SCADA RTU to where the sensor is to be located(~300 ft away). Without knowing how the SCADA is configured(sourcing vs sinking) and input impedance, I feel safer with providing an external power supply. I don't have 24VDC available where the sensor is to be installed.
Any information on the vendor would be appreciated. Most sensor that I've used seem to be loop powered directly from PLC/SCADA RTU.
Thanks,
EE