What are Thermowells?

Thermowells are tubular fittings used to protect temperature sensors installed in industrial processes. A Thermowell consists of a tube closed at one end and mounted in the process stream. A temperature sensor such as a thermometer, Thermocouple or resistance temperature detector is inserted in the open end of the tube, which is usually in the open air outside the process piping or vessel and any thermal insulation. The process fluid transfers heat to the thermowell wall, which in turn transfers heat to the sensor.

A Thermowell is designed to protect your Temperature Probe from anything that might damage it. High velocity or high pressure can cause Temperature sensors to bend or warp. Constant exposure to certain materials may cause your Temperature Probe to corrode or erode such as phosphoric or sulphurous acids.

They also ensure the temperature device never touches the materials being measured protecting the material from contamination. This is vital for many applications such as the brewer, who needs to monitor Temperature throughout the fermenting process without contamination to the product. This also comes with the added benefit of allowing you to service or replace your thermometer without draining the vessel or without leakage of your material.

Due to the added mass present, the response to process temperature changes is delayed. This makes Thermowells not suitable to applications that require measurement of quick temperature changes.

D&N Engineering expertly crafts Thermowells in-house on our CNC lathes from a range of materials and can manufacture to suit a supplied sample or sketch.

 

BAR STOCK MACHINED

ITEM	DESCRIPTION
	STYLE TMA THREADED THERMOWELL MACHINED
	STYLE TMB TAPERED THREADED THERMOWELL MACHINED
	STYLE TMC THERMOWELLS MOUNTED BUSHES MACHINED
	STYLE TMD THERMOWELL HEX NIPPLE MACHINED

THERMOWELL FABRICATED WELDED

ITEM	DESCRIPTION
	STYLE TFA THERMOWELL BUSHING REDUCERS FABRICATED WELDED
	STYLE TFB THERMOWELL COMPRESSION FITTING FABRICATED WELDED