Because of its reliability, thermostatic bimetal is employed as an economical solution for temperature sensing and control applications in automotive, electrical, hvac, home. The resultant expansion of bimetal is proportional to temperature. Product drawing mounting 1 dial size parameters a b c 100 100 110 21 d 689. Each thermometer is manufactured to a standard accuracy of 1% of span. As the bimetal strip heats up and cools down based on the resistance in the sender, the bimetal strip deflects, moving the needle on the gauge accordingly. They are often used in food and beverage preparation, process temperature measurement, wastewater treatment, boiler systems, and other places. When the temperature exceeds the temperature range, it may cause the temperature gauge to break. Series bt bimetal thermometer is accurate and reliable. There is a long history of superior quality in engineering, manufacturing and customer service of these products. Industrial bimetal thermometers industrial bimetal therm. Temperature gauges is a fabricated instrument of a control and measurement. The temperature is measured by means of a bimetal system inside the temperature sensor. An expansion temperature gauge consists of a temperature sensor, a capillary and a bourdon tube. Reotemp provides bimetal thermometers, pressure gauges, diaphragm seals, rtds, thermocouples and related accessories to a variety of process markets worldwide.
Bimetal thermometers are inexpensive, simple, and durable. The bimetal thermometer employs a bimetal strip in the form of helix it works on the principle of thermal expansion two metals having different coefficient of expansions are joined to form a bimetal. Minimum insertion length minimum insertion length tb. Pyrosales provide a variety of temperature gauges to cater to a range of industrial applications. Model 10, 30, and 31 pressure gauge filling and operating instructions. Please visit pyrosales and read our bimetal dial temperature gauge pdf. The thermostat consisted of a bimetallic spring such as used in the gage type thermometer and a switch, usually a mercury level switch. They are used for measurement of temperature in most of the industrial applications.
An extremely responsive temperature sensing helix which has been carefully sized and tested, heat treated and aged to relieve inherent stresses and ensure continued accuracy. Temperature and pressure limitations must be considered. Pressure gauge models 10 and 30 installation and maintenance manual. The tapes having different coefficients of thermal expansion. Each ashcroft industrial bimetal thermometer is backed by a limited five year warranty. As a consequence of covid19, lead times are extended substantially for all. Types of temperature gauges for temperature measurement. Bimetal thermometer process grade all stainless steel.
Oem thermometers us manufacturer of temperature and. Measuring principles temperature stewartbuchanan gauges. Flexibility, safety, and easeofuse were at the top of the list of requirements when a chemical manufacturer was looking for temperature converters for a mixing station redesign project. The measuring method of an inert gas filled thermometer is the expansion of gas in a closed system. Instruction manual bimetal thermometer model a ashcroft. I 11082011 all stainless steel bimetal thermometer model a and e nominal size 3, 5, 100 mm or 160 mm. Please consult the options and accessories section for details. The maximum length recommended for bimetallic temperature gauge should be taken as 700 mm. The bimetallic thermometer has a quick reacting bimetal coil. 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. The temperature is measured with a bimetal system inside the thermometer stem. All stainless steel bimetal thermometer model a and e. The series bt bimetal thermometersoffer accurate, reliable service even in the toughest environments.
Next, bimetal dial thermometer configurator step 1. These corrosion resistant units are constructed from stainless steel and are hermetically sealed to prevent crystal fogging. All sales subject to standard terms and conditions. Temperature measurement devices, bimetal thermometers. Bimetal temperature gauges are available with a scale range of 70. As purely mechanical devices, they display only the current temperature on their dial. Temperature element coiled bimetal working range maximum scale value location of stem centre back connection, direct cover 304ss case 304ss window glass dial. Temperature is the most commonly measured process parameter in the world as it is often critical to the success or failure of a process. A bimetallic strip is used to convert a temperature change into mechanical displacement. Bimetal dial thermometer general instruments consortium. Temperature sensing area last 2 to 4 of the stem model dial size connection a lo 3 12 npt 3. Bimetal thermometer model 54, industrial series bkw instruments. In turn, this creates a reading, illustrating the temperature. Indicating temperature switches, that combine indicating with switching are also available.
Click once on the download button to download the data sheet in excel format. Bimetal thermometer datasheet free specification sheet templates for excel and pdf. All specifications are subject to change without notice. The measuring system itself is filled with a liquid. Over temperature 100% of span 50% of span process connection. Manufacturer and distributor of bimetal thermometers, digital thermometers, temperature and pressure transmitters, pressure gauges and accessory products please note. If the gauges will cross the equator or pass through cold regions during shipment, or will be stored in a cold region, careful attention is required. The different expansions force the flat strip to bend one way if heated, and in the opposite direction if cooled below its initial temperature. Then, to add insult to injury, the glass was broken. The instrument itself is active even though the thermometer is not used, including temperature measurement from the time of manufacture. Bimetal dial thermometer configurator reotemp instruments. Recognized for exceptional customer service, ontime deliveries, high quality products, and innovative engineering services, reotemp is an iso 9001 certi.
The upper limit of the normal temperature should be selected temperature range to be 75% or less of the temperature span. 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. Digital temperature gauge with rtd and thermocouple input. 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. The bimetal element directly drives pointer, eliminating gears and linkage. The measuring element consists of two metal tapes welded together. The resultant expansion of bimetal is proportional to temperature that is sensed. This datasheet can specify thermometers with a single or double helix bimetal temperature sensor and electrical alarm contacts. It is manufactured from two coldwelded metal strips. The metals in the bimetal industrial thermometer will allow the thermometer to be used in extreme temperature ranges. Bimetal dial thermometers are simple in construction, but rugged. Bimetal dial thermometers are simple in construction, yet rugged. Gas thermometer uses how does a bimetal thermometer work.
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