Threaded thermowells provide safe and reliable pressure ashhcroft, while meeting challenging applications such as usage statistics when was this report last used. Stainless steel wells provide excellent corrosion resistance, but your media may require you to choose another material such as brass, carbon steel, monel, inconel, nickel, hastelloy, tantalum, titanium, or teflon coating. Image modeldescription process connection materials bore size. Thermowells straight configuration tapered configuration stepped configuration application thermowells for temperature instruments are recommended for all process systems where pressure, velocity or viscous, abrasive and corrosive materials are present individually or in combination. With critical applications, a separate wake frequency calculation is recommended. Serving to isolate and protect your temperature instrumentation. The calculation determines many factors having to do with the process application, including the. Due to the frequent changes in the cost of the metals involved in construction of the thermowells, we do not list our prices here. Standard flanged thermowells are supplied with a straight shank and are designed with a 0. Ashcroft thermowells select from the broadest range of sizes, insertion lengths. Buy thermowell 34 412 316 stainless steel stepped npt 0. How dimensions are established for the wells and the immersion probes that fit into them are not readily apparent. Since we couldnt include all of the possible variations, the information in the document is intended to cover the most commonly used probes and thermowells.
Ashcroft 510511 threaded diaphragm seal drawing index ashcroft 702703 flanged diaphragm seal drawing index ashcroft 740741 threaded diaphragm seal drawing index. Temperature measurement devices, bimetal thermometers and. Limited space thermowells general purpose thermowells standard industrial wells. Operating instruction for the thermowell calculation program. Threaded thermowell, hex size 1 18 inches, shank base diameter 34 inch, shank length 7. Care must be taken in determining the material used for the thermowell as well as other. In critical applications an additional calculation is recommended. For more than 30 years aarico has been serving with distinction, an array of industrial sectors and activities, from application engineering support, manufacturing and final inspection to instrument delivery all under one roof. Thermowells are used to provide an isolation between a temperature sensor and the environment, either liquid, gas or slurry. One piece bar stock construction large selection of mill traceable materials stamped with material, heat number and date code. As8901 digital oxygen concentrator tester with fine oxygeno2 concentration detector mini oxygen meter gas analyzer. For a socket thermowell, the position of the welding is not equal to the position of the maximum stress.
This version of internet explorer is either no longer supported by microsoft, or is obsolete and some features of our store may no longer be supported. Scope of the standard the wika thermowell program applies to straight, tapered and stepped thermowells machined from bar stock or forging within the dimensional limits of asme ptc19. Using thermal grease in thermowells in some applications with nonbapi products, there are thermal transfer concerns due to a large gap between the interior wall of the thermowell and the outside of the immersion temperature sensor probe that is inserted into the thermowell. Ashcroft thermowell stem connection 2 12 in 75w0162sm260s. Standard lengths u 1 82, 142, 182, 232, 382mm 73, 110, 170, 210, 260mm 1 rating depends on the parameters process medium, process pressure and temperature, flow rate and design of thermowell. Thermowell and immersion probe installation overview. Ashcroft thermowell straight shank, threaded, with or without lag. The product with part number 75w0250ht260s thermowells threaded configuration is from company ashcroft and distributed with basic unit price 75,38 eur. A tsw400 series thermowells thermowell styles pages 4 to 25 show the style of thermowell available and is the first consideration when selecting a thermowell. Well shed some light on how, why, and when to apply this important device.
Click here to purchase parts or get additional information regarding your parts need. A variety of materials and process connections are available for both thermowell and protection tubes. A standard, weld thermowell will measure 4 from the transition point between the insertion stem and the weld portion of the well to the end of the sensor side of the thermowell stem. The process connection is available in different sizes ranging from 0. A perfect solution for protecting the process and extending product service life. All metallic wells are constructed in strict compliance with astm and ansi specifications. The final step is an evaluation of the thermowell length based on the steady state stress. Ashcroft 1259 process pressure gauge drawing index. Ashcroft s thermowells are made of brass, carbon steel, 304 stainless steel and 316 stainless steel. Thermowell, high temperature thermowell smart sensors inc. Screwed thermowells model sm, st, rt and ht ashcroft. This serves to isolate and protect the sensing instrument, and permits removal of a sensing instrument without shutting down the process. This determines the maximum length the thermowell can be in order to handle the bending stress.
To achieve abrasionresistance we can add the thermowell surface with a stellite, eutalloy or ceramic layer. Lag, shank styles, types, materials of construction and pressure rating. Ashcroft g1m3d2 brass thermowell 6in stem 5in length from davis instruments only 1 left in stock order soon. Flanged, straight, forged e1 flange rating see ordering information on page 29. Thermowell specifications should be determined based on process conditions which include strength, temperature, pressure and corrosionresistance requirements. Screwed thermowells model sm, st, rt and ht features solid bore construction materials according nace mr 0175iso 15156 selection of materials standard and customer specifications iso 2281 and ansiasme b1.
Ashcroft 63100mm 1008 pressure gauge drawing index. Shop temperature thermowells from automationdirect. Thermowell with flange solidmachined, full penetration weld design or with double fillet weld. The ashcroft thermowells gauges offer high quality and durability for an affordable price.
If you need assistance with the specification of a probe or well, or you want a type of probe or thermowell not included in this document, a. Fluid flowing by a thermowell forms a turbulent wake that has a defined frequency. For an acceptable thermowell design, the ratio of the strouhal frequency and the natural frequency shall not exceed 0. Digital files 15 image files available in multiple sizes 1 file. Alloy engineerings more than 50 years experience manufacturing high specification thermowells across a broad cross section of industries and processes has developed a wealth of expertise in engineering, materials and production that ensures our customers the best value in quality, delivery and service in the industry. Thermowell and immersion probe installation overview application note thermowells are hidden in pipes and are rarely seen. Overview in some applications with nonbapi products, there are thermal transfer concerns due to a large gap between the interior wall of the thermowell and the outside of the immersion temperature sensor probe that is inserted. As8901 digital oxygen concentrator tester with fine oxygen. How to order eight steps to thermowell selection ashcroft.
Std for 14 element hd for 14 element std for 38 element hd for 38 element. Thermowells thermowell design and selection criteria. All sales subject to standard terms and conditions. You should consider the possibility of corrosion when selecting the construction materials of your thermowell. Looking for downloadable 3d printing models, designs, and cad files. Threaded thermowell, hex size 1 18 inches, shank base diameter 34 inch, shank length 4 12 inches, bore depth 6.
Using thermal grease in thermowells application note. Ceramic protection tubes are available for high temperature thermowell. Thermowells thermowell design and selection criteria 918 tw1 a thermowell is a pressuretight 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. Ashcroft temperature switch and thermowell tempered water cask inlet high temperaturereportmay. Reflected in you pdf download 2shared blender africana. Modeldescription process connection materials bore size.
The thermowell used with your temperature sensor provides critical protection, access, and measurement integrity. Sizing a threaded ashcroft thermowell with an ashcroft bimetallic thermometer. Temperature measurement devices bimetal thermometers and thermowells accurate to 1 % of full scale in accordance with asme b40. Thermowell the a500 thermowell is machined from a single piece of brass or stainless steel to provide a rugged and leakproof well for mamac systems temperature sensors. Light fixtures furnished under this division shall be furnished complete with lamps and all necessary trim. Flanged thermowells are appropriate for high pressure applications, typically larger pipe sizes and are designed to mate up to an existing flange. Ashcroft thermowell stem connection 6 in 75w0450rt260s flw. This is how much of the thermowell will be inserted into the process. Product details for material from ashcroft 75w0250ht260s. A thermowell allows the temperature sensor to be removed and replaced without compromising either the ambient region or the process.
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