Need some basic power supply help!

Thread Starter

Loujay

Joined Jul 22, 2021
2
have a power supply 24v /2.5a DC din rail. I have several pressure sensors 2 wire : supply 9-32 VDC Output 4-20mA

Plan on using a Raspberry Pi - DACC2 to read the amps to get a reading can anyone give me a good circuit diagram for this?
 

LowQCab

Joined Nov 6, 2012
1,078
So it sounds like You are going to convert the Analog-Signal from your
Pressure Sensors into a Digital-Signal for the Raspberry-Pi, (using an ADC-Input),
then You want to convert the Digital-Output of the Raspberry-Pi back into
an Analog-Signal using the DACC2 add-on Board.

Why do You need the Raspberry-Pi or the DACC2 ???

What type of Analog device do You intend to drive with the DACC2 ?
What Voltage-Range do You need from the Pressure-Sensors ?
What will You be using to display the Outputs of the Pressure-Sensors ?,
a LED-Meter, or maybe even an old-school Analog-Meter ?
do You need to switch an output when the Pressure-Sensors go over, or under, a set pressure ?

Also, please provide the Spec-Sheet for the Pressure-Sensor.
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.
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Thread Starter

Loujay

Joined Jul 22, 2021
2
So it sounds like You are going to convert the Analog-Signal from your
Pressure Sensors into a Digital-Signal for the Raspberry-Pi, (using an ADC-Input),
then You want to convert the Digital-Output of the Raspberry-Pi back into
an Analog-Signal using the DACC2 add-on Board.

Why do You need the Raspberry-Pi or the DACC2 ???

What type of Analog device do You intend to drive with the DACC2 ?
What Voltage-Range do You need from the Pressure-Sensors ?
What will You be using to display the Outputs of the Pressure-Sensors ?,
a LED-Meter, or maybe even an old-school Analog-Meter ?
do You need to switch an output when the Pressure-Sensors go over, or under, a set pressure ?

Also, please provide the Spec-Sheet for the Pressure-Sensor.
.
.
.
No you got it wrong!
They don't have a board that reads milamps yet so i just need to put a resistance across read the voltage (who cares what is reading a volt meter) so it is converting my 4-20 mili amp output
so i just need to setup circuit put the correct resistance across my power supply to the sensor and get it read 4 mA at bottom range close to o volts and 20 mA 12 volts

i am using the pi- plates it is irrelevant i need to read the output in volts instead of miliamps
 
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