Changes in temperature of the process to be measured create a change of pressure in the measuring system, which is translated on the dial into read. Ashcroft 63100mm 1008 pressure gauge drawing index. From our beginnings, making household thermometers up to our latest products serving the industrial, commercial, food service, and oem marketswe have always. The measuring method of an inert gas filled thermometer is the expansion of gas in a closed system. Instead of being a mixture of two or more metals, like alloys, bimetallic objects consist of layers of different metals. All metals change in dimension, that is expand or contract when there is a change in temperature.
The model a52, r52 bimetal thermometers are the entry level model among process thermometers. The principle behind a bimetallic strip thermometer relies on the fact that different metals expand at different rates as they warm up. Bimetalthermometers gasfilled thermometers organicfilled thermometers. This product brochure provides you with a view of teltru quality as well as all the information you need to select the bimetal. This ensures that the basic dimensions are maintained. Palmer design, quality, and craftsmanship make the palmer all star bimetal thermometer an industry standard for rugged reliability and accuracy. The different expansions force the flat strip to bend one way if heated, and in the opposite direction if cooled below its initial temperature. To compensate for the ambient temperature, a bimetal element is mounted between the movement and the measuring tube. Otherwise known as a bimetallic dial thermometer, they operate by employing the use of two dissimilar metals that react to temperature at differing rates.
Wika part of your business solutions for pressure, temperature, force and level measurement, flow measurement, calibration and sf 6 gas solutions from wika are an integral component of our customers business processes this is why we consider ourselves to be not just suppliers of measurement components but rather more a competent partner that offers comprehensive solutions in close co. Reotemp sells through a mature distribution network that reaches all 50 states and 30 countries worldwide. Configure product now request a quote back connect bimetal thermometer reotemps bimetal thermometers are reliable and accurate temperature sensors requiring no electricity or wiring. To assure the accuracy to which the thermometer was manufactured, it should be checked before use. Series bt bimetal thermometer is accurate and reliable even. Temperature measurement devices, bimetal thermometers and. A bimetallic strip is used to convert a temperature change into mechanical displacement. Back connect thermometers are ideal for local, eyelevel temperature readings in most process applications. Applications dimensions download data sheet frequently asked questions reference. This product brochure provides you with a view of teltru quality as well as all the information you need to select the bimetal thermometer most appropriate for. Configure product now request a quote adjustable angle bimetal thermometer reotemps bimetal thermometers are reliable and accurate temperature sensors requiring no electricity or wiring. To receive your download link via email, enter your address here. Back connect bimetal thermometer reotemp instruments.
This datasheet can specify thermometers with a single or double helix bimetal temperature sensor and electrical alarm contacts. Reotemp is a globally recognized iso 9001 registered manufacturer of temperature and pressure instrumentation. Please visit pyrosales and read our bimetal dial temperature gauge pdf. The strip consists of two strips of different metals which expand at different rates as they are heated, usually steel and copper, or in some cases steel and brass. Bimetal thermometers are a simple and cost effective way to achieve a visual indication of temperature in a process. Click once on the download button to download the data sheet in excel format. Put the thermometer bulb in dry ice, so as to draw all the liquid into the tube. This product brochure provides you with a view of teltru quality as well as all the information you need to select the bimetal thermometer most appropriate for your application.
The highquality thermometer has been designed especially for the requirements of the process industry. The bimetal system is built in the stem of the thermometer and functions as a temperature sensor. The model a43 bimetal thermometer was developed as a standard version for simple temperature indication in heating applications. Bimetal thermometer 2 rear connection general specifications miljoco 2 rear connected bimetal thermometers feature a compact design and economical price. Bimetal thermometer for industrial applications models a52. Temperature is the most commonly measured process parameter in the world as it is often critical to the success or failure of a process.
When installing the thermometer into a threaded connection, always tighten with a wrench on the hex nut. Aug 20, 2018 the maximum number of 20 entries was reached. Tap the bulb gently on a hard surface with the thermometer held in an upright position, bringing the liquid together. This site is like a library, you could find million book here by using. The model 55 bimetal thermometer has been developed and is manufactured in accordance with the en 190 standard. You may do so in any reasonable manner, but not in. Read online tbm bimetal thermometer siamrtd book pdf free download link book now. In many industrial applications there are still locations where it is desirable to know what the temperature of a fluid or device is, but it. These thermometers use the following two principles. Noshok measurement solutions 100 series industrial type bimetal thermometers.
The model a50 bimetal thermometer is used mainly in heating, airconditioning, ventilation and refrigeration technology and is suitable for a scale range up to 200 c. Never rotate the thermometer head when it is in the angled position. Total hvac formulas and conversions in pdf file free download download drive1 download drive2. Typically, bimetal thermometers are used in industrial applications in which ease of viewing temperature is preferred. The external adjustment permits zero reset from outside the case. For this reason it is important to avoid damage of the glass window, while the stem temperature is at freezing or below. Series bt bimetal thermometer is accurate and reliable. Every swagelok dampenedmovement bimetal thermometer is factory calibrated to meet asme b40. In another design, the bimetalstrip is coiled into a loose helix, with outer coil rigidly fixed to the case. Process grade all stainless steel construction, 5 dial size, adjustable angle connected. The bimetal element directly drives pointer, eliminating gears and linkage. The ci series of ashcroft industrial bimetal thermometers are designed for applications where external adjustment or pointer reset are not desired. Bimetal thermometer for heating technology model a43. Designed for deepwater drilling, offshore riggs and other rugged outdoor applications.
The rate at which this expansion or contraction takes place depend on the temperature coefficient of expansion of the metal and this temperature. When gradual heat is applied and the liquid rises, the column will be joined. These tamperproof instruments are an excellent choice when an external recalibrator or pointer adjustment are not required. Long reach dial thermometer, bimetal, dial size 3 in. On the one hand, this protects the instrument, on the other hand, the measuring. Bimetal thermometer general specifications miljoco lower connected bimetal thermometers are ideal for applications requiring a compact dial and fixed lower connection. The bimetal thermometer head can be rotated as illustrated only when in back connection position. Bimetal thermometers are economical and offer fair accuracy. Adjustable angle bimetal thermometer reotemp instruments. Instructions for the installation and use of lenz bimetal dial thermometers general when removing the thermometer from the packing box, handle it by the case assembly or the fitting.
Bimetallic strip thermometers how thermometers work. Bimetal refers to an object that is composed of two separate metals joined together. Its modular design enables a multitude of combinations of case materials, nominal sizes, scale ranges and stem lengths. Dual bimetal thermometer and thermocouple thermocouple wire and accessories pressure gauges diaphragm seals pressure transmitters pocket style bimetals sanitary styles gas and liquid filled surface magnetic mounted mst calibration available 1285 jefferson street, anaheim, ca 92807 7146308451 8002828367 fax 7146303560. The series bt bimetal thermometersoffer accurate, reliable service even in the toughest environments. Bimetal thermometer datasheet free specification sheet templates for excel and pdf.
Tbm bimetal thermometer siamrtd pdf book manual free. A bimetallic dial thermometer, commonly known as a bimetal thermometer, is installed at the point of measurement and is usually read from that location. These bimetal thermometers measure the temperature of a material within a process piping system, tank, vessel or other application that requires a local. In many industrial applications there are still locations where it is desirable to know what the temperature of. The bimetal thermometers are mounted into the respective application with screwin thermowells. Bimetal thermometers temperature is the most commonly measured process parameter in the world as it is often critical to the success or failure of a process. All star 316ss bimetal thermometers are now available. Bimetal thermometer for the process industry per en 190. Ashcroft 1259 process pressure gauge drawing index. This file is licensed under the creative commons attributionshare alike 3. A temperaturemeasuring instrument in which the differential thermal expansion of thin, dissimilar metals, bonded together into a narrow strip and coiled into the shape of a helix or spiral, is used to actuate a pointer. They are available in a variety of mounting styles and can be mounted in vessels or pipes using pipethread mounts. How bimetal strip acts as thermometer howmechanismworks.
Never use the head of the thermometer for tightening. Installation and maintenance instructions bimetal thermometers caution. Trimetal and tetrametal refer to objects composed of three and four separate metals respectively. Bimetal thermometers are constructed of a metal sensing rod, which.
Apr 16, 2020 download tbm bimetal thermometer siamrtd book pdf free download link or read online here in pdf. Click here to download the latest adobe acrobat reader. Download tbm bimetal thermometer siamrtd book pdf free download link or read online here in pdf. These instruments are provided with an external recalibrator on the rear of the case, for easy temperature adjustment. Dampenedmovement bimetal thermometers centerback mount adjustableangle mount ordering information build a dampenedmovement bimetal thermometer ordering number by combining the designators in the sequence shown below. Do not bend the stem this will cause misalignment of the internal parts, resulting in permanent damage.
Otherwise known as a bimetallic dial thermometer, they operate by employing the use of two dissimilar metals that react to temperature at. The dials are available in 3 inch rear, 5 inch rear, and 5 inch everyangle connections. Especially in the chemical and petrochemical, oil and gas, and power engineering industries, the temperature measuring. In some thermostats a bimetal strip is used to make and break a set of contacts. Mechanical temperature bimetal thermometers bimetal operating principle. Instructions for the installation and use of lenz bimetal.
C, ip 67 tss tsf gas filled thermometer with fixed bulb or capillary tube, in a wide range of specifications, class 1, ranges 200. All books are in clear copy here, and all files are secure so dont worry about it. The target markets of this thermometer are air conditioning. Download pdf file electromagnetic radiation detector, dt1. Bimetal thermometer 3 or 5 rear connection miljoco rear connected bimetal thermometers are economic and ideal for applications that can accept a fixed back connection.
798 917 701 492 328 1108 1357 973 346 667 1298 264 379 1124 1299 436 1514 1006 158 619 23 853 702 243 445 964 1145 637 1360 245 409 1279 1265 288 416 100 344 1081 102 344 912 73 508 995 137 1011