Hi all,
I'm using a TE pressure sensor based as most are I suppose on a Wheatstone bridge.
In the data sheet it shows this
I've used a ina122 instead of the circuit shown, my question is about the symbol shown as a current source on the left. Does this mean it will draw 1.5mA or I should only let it draw 1.5mA with a resistor?
I'm using 5v supply and the resistance across the bridge is 6k ohms which would give me 0.8mA draw.
This should be fine in my head but the first sensor has lost one strain gauge (could be down to mishandling) but I wanted to rule out it being damaged by the circuit driving it as they are a little bit dear!
Cheers Geoff
I'm using a TE pressure sensor based as most are I suppose on a Wheatstone bridge.
In the data sheet it shows this
I've used a ina122 instead of the circuit shown, my question is about the symbol shown as a current source on the left. Does this mean it will draw 1.5mA or I should only let it draw 1.5mA with a resistor?
I'm using 5v supply and the resistance across the bridge is 6k ohms which would give me 0.8mA draw.
This should be fine in my head but the first sensor has lost one strain gauge (could be down to mishandling) but I wanted to rule out it being damaged by the circuit driving it as they are a little bit dear!
Cheers Geoff