AEM 1/8" NPT Water/Oil Temp Sensor Kit (30-2012)1 8" NPT Water Oil Temperature Sensor Kit by AEM Temperature Sensor with 1 8" NPT Male Thread, Plug, Pins & Pin Lock Features Accuracy: < 2C 3. 6 Operating Temp: 40C to 200C 40F to 392F Dissipation Constant: 12 mW C. The ratio, at a specified ambient temperature, of the change in the power dissipation of the sensor to the resultant temperature change of the thermistor. Test medium: silicone oil. Thermal Time Constant: 10 sec. The time required for the