Thermowells are recommended to protect both the operator and the temperature sensor. The proper thermowell will reduce the possibility of damage to the temperature sensor due to corrosion, pressure or the flow of abrasive or viscous media. In addition a defective instrument may be removed without shutting down or draining the process. Most wells have 1/2" process & instrument connections with a 0.260" bore. Wells with other dimensions and materials are readily available on order.