I have following circuit reading an externally connected PT1000 sensor. The Sensor is on a cord, the side we are looking at in the schematic uses a a female connector. So the pins are not easily accessible. The device will however be used in a bio lab setting. Moisture (up to 100% rel.) and temperature (might go up to 50°C) might be an issue. Corrosion will probably not be an issue.
I want to foolproof the device for non-technical personel with an academic background.
What are important scenarios I would need to failsafe the circuit against, and - if a suggestion is easy - how would I do it?
I have already checked following conditions:
For people wanting to reuse: The circuit specs to 0-50°C with about 0.1°C resolution on a 10bit ADC. Make sure to use the right Opamp, I've been burned by that.
Datasheet for diodes: SMAJ5.0A