Selecting A Wire - Thermometrics Corp

Selecting A Wire

GENERAL CONSIDERATIONS Vinyl offers low Cost, good flexibility, fair electricals, a good general purpose material. Irradiated PVC offers moderate cost, heat resistance, good electrical and physical properties, excellent abrasion, cut-through and solder resistance. Teflon offers high cost, high temperature rating, excellent chemical resistance, excellent electrical properties, poor cut through resistance. Tefzel offers high cost, good electrical and physical properties, excellent chemical resistance. Kynar offers high cost, poor electrical properties, excellent physical properties. Kapton offers very high cost, lightweight, small outside diameter,, excellent cut through properties,...

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Weld Pad Temperature Sensors In Depth - Thermometrics Corp

Weld Pad Temperature Sensors In Depth

Thermometrics manufactures a full line of standard and custom weld pad RTD's. The weld pad (tube skin) termination allows a temperature sensor to be welded directly onto piping or other metal surfaces to sense the surface temperature. Weld pads are most commonly used in fired heater tubes, refinery heater tubes, boilers and furnaces in refineries, and industrial boilers. However, they can be used in virtually any application requiring surface temperature measurement. Weld Pad (Tube Skin) RTDs come in 4...

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Tubeskin: In-Depth

Tubeskin Thermocouple In Depth

Thermometrics Corporation manufactures temperature sensors, radiant tubeskin thermocouples, petrochemical sensors and gasifer thermocouples for refining facilities around the world. Tube skin refinery thermocouples manufactured with superior metallurgy are used to measure the temperature of process such as Coker, Purge Gas Recovery, Primary Reformer, and Synthesis Converter systems. The size of the sensors are designed for each particular application by an engineer during construction or retrofit of a factory or process. The type of thermocouple sensor used is generally a...

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Type K: In-Depth

Thermocouple Type K In Depth

TYPE K THERMOCOUPLE (Chromel / Alumel) 200°C to +1260°C / -328°F to +2300°F Chromel {90% nickel and 10% chromium} Alumel {95% nickel, 2% manganese, 2% aluminium and 1% silicon} Thermocouple Type K Type K Reference Chart °F Type K Reference Chart °C This is the most common thermocouple type that provides the widest operating temperature range. Type K thermocouples generally will work in most applications because they are nickel based and have good corrosion resistance. •1.Positive leg is non-magnetic (Yellow), negative leg is magnetic...

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Thermowells: Overview

Thermowell Overview

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 sensitive zone plus one inch or greater. Gas temperature measurement: A properly designed thermowell will extend into the fluid an amount equal to the length of...

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Selecting the Right Sensor

Selecting The Right Temperature Sensor

Imagine 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? Has anything been specified to fill these spaces? The selection of what type of temperature tranducer to be used affects many other aspects of the...

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Temeprature Scales: In-Depth

Temperature Scales In Depth

The 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 pack is pushed down inside the beaker, the water braely rises to cover the ice pack. A saturated snow cone effect is what your...

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Selecting Elements

How to Select a Temperature Sensor Element

RTD 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 has a pre-specified resistance value at a known temperature which changes in a predictable fashion. In this way, by measuring the resistance of the element, the...

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Selecting Thermowells

How to Select a Suitable Thermowell

How 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 proper selection of a thermowell one must also take into account the thermal lag (response time), the sensing accuracy as well as the service condition, i.e....

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Safe Food Handling

Safe Food Handling Procedures

Safe 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 make your buying decisions when your supermarket suddenly has a "special" on meat because their refrigeration broke down. Is it worth the risk? You wonder. Understanding...

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