Part Number:LMP91000
Hi
We are using a LMP91000 to drive an amperometric sensor. We need to switch the sensor 'off' between measurements and only energise the working electrode for a short period of time during measurement (in the range 0.1 - 10 seconds). When the potentiostat is powered up we observe that Vout is pulled down to zero for 10 seconds and then saturates for a further 6 seconds before beginning to settle (over a 2 - 3 minute period). We have tried changing the gain resistor (from 350K to 120K) without significant change to the behaviour. Could you please advise on how we might be able to make measurements within a short time (preferably milliseconds or less) after powering up the potentiostat (or at least not energising the working electrode). Many thanks.
Neville