We use a Wheatstone bridge to measure resistance change(expected resistance change is 0.11 Ohm). Our sensor is an isonel-coated platinum wire which has 15 cm length and 25 micrometer diameter.

The sensor is also an heater. We expect to measure an imbalance within the range of 1 mV. Is it possible to measure such quantities with DT80? I also want a "to do list" for decreasing noise.

We use resistors which have 0.1% tolerance,5 ppm/c temperature coefficient. But the pot for balancing the system has %5 tolerance and 5 ppm/c temperature coefficient. And actually we do not know precision level of our power supply. Therefore our project is a pain in the neck.

Good morning skaar,

Yes the DT80 is just the ticket for this and strain gauges can make very accurate temperature sensors

This is classical strain gauge measurement stuff. You should start by looking at the section in the manual that covers bridges (Page 186 in the manual). The precision of the power is not so important as we can measure that and allow for it in the calculation. If you need to know more just email me.

Cheers,
Roger