I have a PR55-5A, and a mega modem to measure water level. My water level transducer requires 24v, and has 2 wires (red and black). I’m planning on powering my PR55-5A, and my transducer using 2x 12v batteries in a remote location without power available.
The NCD website says to connect my external power to the sensor in the following way:
Here are my questions:
1 - The M12 pigtail from NCD has a blue and brown wire coming out of it. My transducer sensor from china has a red and black wire. Which connection goes where?
2 - Is it possible to power the PR55-5A using 24v? I could swear I read 6-36v DC on the website before purchasing, but on the back of the device itself it says 4-12v DC. If I can’t power it using 24v, I’ll need to use a DC Buck converter to bring it down to 12v.
3 - If I have to buy a DC Buck converter, what what is the maximum amperage the PR55-5A will draw? I’m assuming a 1amp converter is plenty?
4 - When connecting the PR55-5A to an external power supply, should I remove the AA batteries?
5 - Is there anything I need to change when switching to external batteries with a barrel connector from internal batteries? I saw some old models required changing jumpers.
Here is a photo of the wires I’m working with.
Thanks!