Hi folks, I need to read at least 4 temperatures that will range from -30 deg F to + 300 deg F and one from -30 deg F to + 1800 deg F. I will use a thermocouple and amplifier for the higher temp sensor but which method is accurate and fast for the lower temperatures? Can I go digital here and have all sensors share an spi/I2C/etc port or should I go with 4 adc channels and NTC's? I think I prefer digital as I need to read to .1 deg F accuracy over the entire temperature range.
Also to note is that these sensors will be in a hostile environment with lots of vibration, dust, chemicals and obviously heat.

Thanks.