I wonder how this can be, because your schematic shows 5V across the shunt plus 7.02V across the sensor gives 12.02V at OPAMP output. This is impossible with a 12V supply as shown.
Absolute pressure sensors (measuring difference between externally applied pressure and an internal vacuum reference) must withstand normal athmospheric pressuce of 1013 mB/14.7 psi, otherwise it would be impossible to handle them. In case of a passive strain gauge sensor, we can also expect a monotone transfer characteristic, but not not necessarily linearity up to to this pressure range. It's unlikely to get a specification for the overpressure range.
Yes i do, because i have a chamber and i have already have sensor of 0-15 psi but this sensor output is 0-10v . so my system i didn't required any other circuit i have directly fed this signal to my adc and read the appropriate pressure. So now i have to change sensor because of shortage in market. so i find this sensor. so my answer is yes i want to use this.most important question:
Do you really want to use this sensor at pressure close to vacuum? --> 0...5psi absolute
yes i want both because amplify the signal required more stable voltage to input. and maximum 0.02 psi error required for my system.You want precision or accuracy or both?
What is your max allowed error fpr prec/acc? (Value, please. No text)
yes no problem i can use 15v power supply.Supply:
6.5k (max) @ 1.5mA gives 9.75V (max)
plus 5V at the shunt = 14.75V
--> thus you need at least 15V supply.
(While 12V works with your sensor, it does not mean it works with a different sensor of same type)
i didn't understand this can you please give me more detail of local feedback. my method for generating current is stable or not?Stability:
* 1.5mA Supply: I strongly recommend to use local feedback for the OPAMP to maintain stability even for longer wires.
* Instrumentation amplifier: the same local feedback here, especially because of the wiring to the "gain set resistor"
yes i do for stability of power source and input pin.generally:
* Use a bulk capacitor for each supply rail. Use a ceramics capacitor for each supply pin of each IC.
* Use ESD protection at sensor lines.
* Use HF filter at Instrumentation amplifier inputs.
0.02psi on a 5psi span is 0.4%yes i want both because amplify the signal required more stable voltage to input. and maximum 0.02 psi error required for my system.
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?