Hi guys, I am doing a project in which a pressure transducer is needed. What would you recommend between one with 4-20ma output and one with 0-10V output? Which one is easier to interface with arduino?
Thanks 
Both require extra parts (resistors), and have a limited resolution with a common Arduino. Can't you use a sensor with digital I2C output.
Leo..
Yes, but i can't find a pressure transducer with I2C that can read at least 100bar.
Do you know one?
They both have advantages/disadvantages. If the sensor is going to be connected to the Arduino via a long cable (several meters) then 4-20ma would be the best choice. If the sensor is on a short cable (less than 1 meter) then 0-10 volts would be simpler.
If you are using a 5V Arduino then you only need a voltage divider (2 resistors) and 2 protection diodes in order to connect the sensor to the Arduino analog input.
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Hi, thanks for the replie.
I was thinking to buy this in the picture. It has a supply voltage between 8-30V and an output of 0-10V (name: hda 4745-b-400-140).
Do you know if there is any code available to run it?
I would contact the manufacturer
What project, what pressure.
The image you posted seems to be a 400bar sensor.
Is this correct?
Code can be simple.
float pressure = map(analogRead(A0), 0, 1024, 0, 401); // pressure in bar
Leo..
I have to measure chamber pressure inside a rocket motor.
This is the project I am following.
Richard Nakka's Experimental Rocketry Site.
You are right, it is a 400 bar sensor.
The problem is that i do not have the knowledge to do the code and the circuit so before buying it I was searching around to find some help 
A problem that needs to be fixed first.
You could get an Arduino starter kit, and work through the examples.
You will soon find out that the basics are not as hard as you might think.
Leo..
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Can I suggest you approach the model rocket community for information on the type of pressure sensor, you are not measuring air but hot gases.
You will not be the first to do this, and they may have kits or pre assembled modules.
How big will your motors be?
What experience of rocketry do you have?
Tom... 
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Thank you 
Hi thanks for the replie.
I know, if you look at the link I leaved in a previous comment you will see how the hot gases are managed.
Do you know any rocket community?
You don't, and you are going to play with rockets from your own knowledge?
I would be hitting Google to find any rocketry groups/associations in your country.
Does your country have regulations about handling explosive/ incendiary type products?
What country are you living in?
Tom..
I am from Italy.
I am studying at university and taking other informations from nakka rocketry website and online courses.
I have already done experiments in the last years, but never did them with some electronics to measure values as thrust and chamber pressure as well.
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