I’m trying to figure this one out. I purchased the “External Power Supply Connectivity Option For Wireless Sensor” when I purchased the 4-20mA current receiver.
I am just running some tests with a tank level radar powered by 4-20mA and am trying to figure out if I should rely on the AA batteries in the NCD, or hook up a small solar panel and 12V battery–which would last forever.
I was surprised to find the AA batteries in the 4-20 mA unit having purchased the external power option. So, just some questions:
Does the “external supply option” --as it ship–only supply power to the sensor, but consume the AA batteries? This wasn’t clear.
Can I configure both the NCD unit and the sensor to use an external 12V supply?
I’m not getting the Tank Level sensor to come up. I have put the device into configuration mode (I think), but I can’t get the sensor to power up. It should power up and let me hit it directly through bluetooth. Am currently just connected +/- of current sensor to my vega tank sensor.
I can’t find any wiring diagram for the current sensor that also includes the external power supply connection.
I can see one diagram posted in an earlier post where the battery is supposed to be in series with the sensor. Should I wire it that way?
Also, I see that there is a “Current Loop” version of my NCD device. Do I have the wrong one?