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Thermocouples are the most common, convenient, and versatile devices used to measure temperature. They convert units of heat into useable engineering units that serve as input signals for process controllers and recorders.
A thermocouple consists of a welded 'hot' junction between two dissimilar metals - usually wires - and a reference junction at the opposite end. Heating the 'hot' junction in the working environment produces a temperature gradient that generates an Electromotive Force (EMF). The EMF appears across the free ends of the thermocouple wires where it is measured and converted into units of heat calibration. Through selection of appropriate thermocouple wires and sheath components, thermocouples are suitable to be used in temperature ranges from (-200 to 2316) °C [-328 to 4200] °F.
Resistance temperature detectors (RTDs), also known as resistance thermometers, accurately sense process temperatures with an excellent degree of repeatability and interchangeability of elements. The RTD is composed of certain metallic elements whose change in resistance is a function of temperature. In operation, a small excitation current is passed across the element, and the voltage, which is proportional to resistance, is then measured and converted to units of temperature calibration. The RTD measurement element is manufactured by winding a wire (wire wound elements) or plating a film (thin film elements) on a ceramic or glass core and sealing the element within a ceramic or glass capsule.
Since most resistance temperature detectors and resistance thermometers have a low initial resistance, often 100 ohms, and have a small change in resistance per unit of temperature range, the resistance of the lead wire is often compensated for with a three or four wire bridge configuration built into the measuring devices. By selecting the proper elements and protective sheathing, RTDs can operate in a temperature range of (-200 to 600) °C [-328 to 1112] °F.
A simpler and safer approach.
SAFER and no risk of thermowell breaking off
REDUCED COST Quick to install for less costly installation No thermowell testing, calculations or need for exotic materials
HIGH PERFORMANCE Keep your measurement quality
SIMPLER Straightforward from ordering to maintenance No thermowell stocking
TSP341-N – A simpler and safer way of measuring your process temperature without the need to shut down, drill a hole or install a thermowell.
With its innovative double sensor architecture and specially developed calculation algorithm, it greatly enhances your safety and reduces your installation costs without sacrificing the quality of your measurement.
A thermowell is a pressure-tight receptacle that protects and extends the life of a temperature sensor in processing applications where the sensor is not mechanically or chemically compatible with the process environment. Installed directly into piping systems, thermowells facilitate sensor replacement in high pressure pipelines and eliminate the need to interrupt the process flow or drain the process system for sensor maintenance functions. The use of standardized thermowells permits simple relocation of sensors throughout a plant.
Pyromation produces thermowells that have a proven track record in a wide range of industries and applications. Our product line includes threaded, Van Stone, socket-weld, weld-in and flanged thermowells. Thermowells are available as separate components or as a part of complete temperature sensor assemblies.
Thermocouple and RTD connection heads provide a protected, clean area for mounting a terminal block or transmitter as part of the transition from temperature sensor assembly to lead wire.
As a full-line manufacturer, Pyromation produces its own design-patented connection heads for its temperature sensor assemblies and other applications. The product line includes General-Purpose (GP) aluminum, plastic, stainless steel and cast iron connection heads, with NEMA 4X ratings for indoor or outdoor use. Pyromation's re-designed explosion-proof (XP), aluminum and stainless steel thermocouple and RTD connection heads are approved as individual components or as part of temperature sensing assemblies used in hazardous locations. Most of the line consists of screw-cover connection heads; however, the company also carries a flip-top aluminum head for easy-access, and a miniature-style connection head. Our thermocouple and RTD connection heads are designed to accommodate most terminal blocks and transmitters, including DIN Form B types. Specifications, ratings and drawings for each connection head are located in the designated catalog pages (see links to pages below).
As an added benefit, Pyromation provides private brand labeling of its thermocouple and RTD heads upon request. Connection heads are available as separate components or as a part of complete temperature sensor assemblies.
Pyromation offers the support products needed to install and maintain your temperature sensor assemblies. From jacks, terminals and plugs to pipe nipples, clamps, bushings and other fittings, we always have inventory available for shipment. Connection heads and transmitters are two of the larger accessories we carry in stock, but we also keep a variety of coiled cords, grips and flexible armor on hand.
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