Vision and Imaging Sensors / Detectors
Thermowell Sensor Assemblies protect temperature devices from damage.
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Press Release Summary:
Protecting temperature instruments from damage due to pressure and velocity, Thermowell Sensor Assemblies consist of connection head, spring fitting or nipple union nipple, RTD or thermocouple, and thermowell. They are available in threaded, flanged, VanStone, socket weld, weld-in, and sanitary styles, and thermocouple types in calibrations of J, K, T, and E meet NEMA 4X requirements. Temperature ranges for RTDs are from -328°F to 1,112°F and for thermocouples -328°F to 2,300°F.
Original Press Release:
Parker's New Thermowell Sensor Assemblies Protect Temperature Instruments from Damage
HUNTSVILLE, Ala. - Parker Hannifin Corporation, the global leader in motion and control technologies, introduces Thermowell Sensor Assemblies. This new line of sensor assemblies was designed to protect temperature instruments from damage due to pressure and velocity in process systems, as well as viscous, abrasive, or corrosive materials.
The Thermowell Sensor Assemblies product offering was developed by Parker Texas Thermowell at the Instrumentation Products Division (IPD). Each complete assembly consists of a connection head, spring fitting or nipple union nipple, Resistance Temperature Detector (RTD) or thermocouple, and the thermowell. Parker Texas thermowells are available in threaded, flanged, VanStone, socket weld, weld-in, and sanitary styles in other hard-to-find materials beyond stainless steel.
"Parker IPD is pleased to have our thermowells assembled with this new line of sensors," explained Kevin Burke, Parker IPD Marketing Manager. "These assemblies build on our expertise in the temperature field and are the direct result of Parker's commitment to listening and responding to customer demands in the marketplace."
Based upon the application, Parker's Thermowell Sensor Assemblies offer two temperature sensor options - RTD or thermocouple. RTDs and thermocouples are both used to measure temperature, but the two types of sensors vary in temperature range, tolerance, accuracy, interchangeability, and cost.
RTDs are temperature sensors that measure the predictable change in electrical resistance of materials with changing temperatures. Due to their superior accuracy and repeatability as compared to thermocouples, RTDs are increasingly becoming the temperature sensors of choice. RTDs must have an external power source to function. A small current is passed across the element, and the voltage, which is proportional to resistance, is then measured and converted to units of temperature calibration. RTDs use either wire wound or thin film elements with a reference resistance of 100 ohms at 32 F (0 C) and can be used in temperature ranges from -328 F to 1,112 F (-200 C to 600 C), depending on the elements used.
While RTDs offer superior accuracy and repeatability as compared to thermocouples,
thermocouples are still required for some high vibration, shock, and higher temperature applications. Depending on the type and material, thermocouples can be used in temperature ranges from -328 F to 2,300 F (-200 C to 1,260 C). Parker Thermowell Sensor Assemblies utilize thermocouple types in the most common calibrations of J, K, T, and E. Thermocouples consist of a welded, or hot junction of two dissimilar metals and an opposing open end used as a reference, or measured end. These two metals are typically made up of wire. As heat is applied to the hot junction, the dissimilar metals produce an electric potential related to temperature. By converting heat into electricity, thermocouples are the most widely used devices for temperature measurement and control.
Connection heads and fittings complete the Parker Thermowell Sensor Assembly. The connection heads are available in cast iron, aluminum, or 316 stainless steel. They meet NEMA 4X requirements and provide a clean, protected area for a terminal block or transmitter. The fittings are spring-loaded or nipple union nipple in stainless steel or carbon steel.
For more information regarding Parker's new Thermowell Sensor Assemblies, visit www.parker.com/thermowell or contact Parker IPD at 256-881-2040. The Instrumentation Products Division is dedicated to being the global leader in the design, manufacture and distribution of high quality, critical flow and ultra-high purity components for the petrochemical, chemical processing, oil and gas, power generation, water analysis, biopharmaceutical, semiconductor, and analytical equipment industries.
Parker Texas Thermowell has over 25 years of experience in the specification, design, and manufacture of a wide range of thermowells used in process systems for refining, oil and gas, chemical, food and beverage, pharmaceutical, cement, power generation, and nuclear applications.
With annual sales exceeding $12 billion in fiscal year 2011, Parker Hannifin is the world's leading diversified manufacturer of motion and control technologies and systems, providing precision-engineered solutions for a wide variety of mobile, industrial and aerospace markets. The company employs approximately 58,000 people in 47 countries around the world. Parker has increased its annual dividends paid to shareholders for 55 consecutive fiscal years, among the top five longest-running dividend-increase records in the S&P 500 index. For more information, visit the company's web site at www.parker.com, or its investor information web site at www.phstock.com.
