Immersion Length (“U” Dimension”- For best teamperature measurement accuracy, the “U” dimension should be long enough to permit the entire temperature sensitive part of the measuring instrument to project into the medium bearing measured. Liquid temperature measurement: A properly designed thermowell will extend into the fluid an amount equal to the length of the temperature…
read moreImagine that you are an Instrumentation Engineer. You are looking at the prints for a new plant, and you see the many locations marked out for temperature transducers. You ask yourself; What has been specified to fill each space? RTD for their high accuracy and linearity? Or thermocouples because of their lower cost and familiarity?…
read moreThe Farenheit scale is used by the Unitied States to define temperature. The common temperature points are 32 and 212 F To test a thermometer, distilled water is cruched into 1mm particles, is put into a beaker and filled with distilled water. The perfect scientific method is one which when the top of the ice…
read moreRTD elements are used to manufacture temperature sensors. A resistance element is the temperature sensing component at the heart of an RTD or resistance thermometer. Typically, they cannot be used in their bare form, but may be built into a probe or assembly which will enable them to withstand various conditions of their application. Each…
read moreHow to Select a Suitable Thermowell In many pressurised processes it is often not possible or advisable to insert the temperature instrument directly into the media being measured. A thermowell protects the temperature instrument, permits the instrument to be exchanged or calibrated, and keeps dangerous or expensive media within the process installation. To make a…
read moreSafe Food Handling Procedures– Today we’ll look at the safe food handling procedures that you need to follow – from the grocery store to the table. These will help you save money, because you will understand why food spoils and when you do or don’t need to throw it away. It will also help you…
read moreTheory of Operation A basic physical property of a metal is that its electrical resisivity changes with temperature. All RTDs are based on this principle. The heart of the RTD is the resistance element. Several varieties of semi-supported wire-wound fully supported bifilar wound glass, and thin film type elements are shown here. Some metals have…
read moreA rolling-element bearing is a bearing which carries a load by placing round elements between the two pieces. The relative motion of the pieces causes the round elements to roll with very little rolling resistance and with little sliding. One of the earliest and best-known rolling-element bearings are sets of logs laid on the ground…
read moreBlind Flange A Blind Flange has no bore, and is used to close ends of piping systems. A blind flange also permits easy access to a line ones it has been sealed. The blind flange is sometimes machined to accept a pipe of the nominal Size to which reduction is being made. The reduction can…
read moreThe stabilized operating temperature of a bearing is the result of many factors. The key influences on operational temperature are bearing style, lubrication type, operational factors, environmental conditions and level of maintenance The particular bearing style (ball, roller, sleeve, etc.), the shaft mounting style (slip fit, adapter mounted, press fit, etc.) and auxiliary items (housings,…
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