Hello,
I am currently working on a project which requires a pressure sensor to be connected to an Arduino. I am fairly new to Arduino and electronics being a mechanical engineering student, so I wanted to get my wiring diagram for the set up looked at before I do anything. Here is the link to the pressure transducer TD1000 Pressure Transducer - Vacuum & Compound Pressure Ranges. The output for the transducer is 0-5 VDC (3 wire). Here is my current wiring diagram as well.
Your setup looks ok but I would highly recommend a zener diode
and series resistor from the transducers output to protect the
analog input of the nano. If you Google 'protection for 5v analog
inputs' you should get many examples. HTH
If you Google 'protection for 5v analog
inputs' you should get many examples. Zener diodes have a
breakdown voltage at which they will conduct backwards thus
clamping the voltage to a safe level.
What is the sensor's power supply voltage, what is the output signal type and voltage?
Your link is to a whole range of sensors, what is your sensor's EXACT part number?
The "BB" in the part number says the output is 4 to 20mA and supply voltage must be 7.5 to 24V. You need to route the output current through a 250Ω load resistor to get a 1 to 5 volt signal to measure with the Arduino's analog input.
My apologies but I seem to have put the wrong part number. The correct part number is TD1000CCG100003D002X-CALCERT, where the CC should correspond to a 0-5 vdc (3 wire) output
I would simply place a 10K resister in series with the output to the input of the A/D. "The datasheet isn't clear on what current you can put through those diodes but the consensus on the forum here a year or two ago was that 2mA was OK." This was published on this forum by CrossRoads in 2017.
