Using 0-3 V sensor with 0-10 V PLC

I have a sensor that generates an analog 0-3 V output signal. I would like to connect this sensor to a PLC which has only 0-10 V analog inputs.

My questions are:

1. Is this recommended to do in general? I guess that I will lose a lot of resolution (70% of it), and this could affect my application requirements.
2. Is there any other way to add something in between in order to convert the 0-3 V signal to 0-10 V signal?
3. Related with point #1, how do I calculate the resolution of the 0-3V signal? my sensor specifications only talk about accuracy but not resolution. This is a ph sensor that can measure from 0 to 14 ph, and has an accuracy of 0.1. The PLC has 10 bit ADC for the inputs (Arduino Mega based).

The PLC is being feed by a 24 V DC power supply. This power supply has two outputs and one is not being used right now.

• What DC power sources can you use for a converter? Commented Jan 25, 2023 at 15:48
• You need to answer question 1 for yourself. You should be able to determine if the resolution is adequate for your application. If it isn't, then you could amplify the signal using an opamp circuit assuming there is a higher voltage available to you (like 12 to 15 V). Commented Jan 25, 2023 at 16:28
• Is it a DIN mount PLC? If so I would look for a DIN mount analog amplifier with suitable characteristics. Commented Jan 26, 2023 at 2:44
• OPAMP: well, you should be able to find an opamp that will work with 24V. The most common opamp circuit is an inverting amplifier. You will have to decide if that works in your application. For example, the output would be 10V when the input is 0V, and 0V when the input is 3V. If you don't want that, you can use a non-inverting amplifier topology. One thing to make note of: the accuracy will degrade near 0V input due to the nature of opamps. This can be countered if you have a negative rail (like -5V) you can use with the opamp. You can find opamp circuits using a google search. Commented Jan 26, 2023 at 16:49
• In the limit, these OPAMP circuits are just an opamp and a few resistors. You should also add a bypass cap near the power supply pin to reduce noise. Something like LM7301IM-NS would probably work for you. Commented Jan 26, 2023 at 16:53