on the playground you will find most examples you need - temp - Arduino Playground - Thermistor2
voltage and current - AttoPilot Voltage and Current Sense Breakout - 90A - SEN-09028 - SparkFun Electronics
what precision do you need?
what frequency of measurements?
do the sensors need to be in the turbine? OK the rpm does, check this - http://arduino.cc/forum/index.php/topic,128147.0.html -