A sensor, similar in functionality to a RTD, used for obtaining process temperatures.
A temperature measuring sensor. If two wires of different metals are joined at their ends to form a loop, and a temperature difference between the two junctions unbalances the contact potentials, a current will flow round the loop. The temperature of one junction is kept constant and the temperature of the other is indicated by measuring the current.
Used to measure temperatures accurately, especially one consisting of two dissimilar metals
A temperature sensor formed by joining two dissimilar metals and applying a temperature differential between the measuring junction and the reference junction.
When two unlike metals are joined to form a circuit and there is a temperature differential between the junctions an electric current is produced. The current can be made be made to do useful work by exciting an electro-magnet, which will hold a valve open while ever the junction between the two metals is hot. When the junction cools the current ceases to flow and the magnet allows the valve to close. This is the principle used by gas control valves to determine whether the pilot burner is alight and hence if it is safe to supply gas to the main burner. If the pilot is not alight a dangerous situation could arise if large quantities of gas are supplied to the main burner but there is no source of ignition to light the gas-perhaps until someone walks past and lit a cigarette. By this time there could be many litres of unburnt gas in the vicinity. A further application of the thermocouple is in testing of appliances. By measuring the current produced, the temperature of the hot junction can be determined. This is used as a means of determining temperatures of floors, appliance jackets, spot temperatures etc. without the use of a thermometer.
A thermoelectric device of two dissimilar metals that form a electrical potential difference at their junction. The potential changes with temperature and is measurable.
A device which uses a circuit of two wires of dissimilar metals or alloys, the two junctions of which are at different temperatures. A net electromotive force (emf) occurs as a result of this temperature difference. The minute electromotive force, or current, is sufficient to drive a galvanometer or amplifier. A temperature sensing device used to measure the temperature of the barrel and nozzle zones.
Two pieces of dissimilar metal welded or brazed together at one end. When the welded end is at a different temperature from the free ends, an electrical voltage is developed that can be measured across the free ends, and that is proportional to the temperature difference and can, therefore, be used to measure the temperature at the brazed end.
A device consisting of 2 different conductors that when heated creates an electrical potential difference.
A sensor made of two dissimilar metals which, when heated, generate a small DC voltage used in temperature measurements.
A high-tech, fast, accurate and reliable (but expensive) thermometer that uses electricity to measure temperature.
A device that senses temperature changes by using a pair of joined wires made of dissimilar metals that produces a voltage that changes with temperature.
a temperature sensor based on voltage produced by a temperature gradient in two wires of dissimilar metal joined at one end.
a kind of thermometer consisting of two wires of different metals that are joined at both ends; one junction is at the temperature to be measured and the other is held at a fixed lower temperature; the current generated in the circuit is proportional to the temperature difference
a bimetalic joint made of special alloyed disimilar metals that produce an electric current when heated
a commonly used type of sensor that is used to measure temperature
a device for measuring temperature consisting of a pair of wires of different metals or semiconductors joined at both ends
a device for measuring temperature in which two wires of different metals are joined
a device made of two different metals which creates a small electrical charge when heated at one end by the gas pilot
a device that converts thermal energy directly into electrical energy
a device which converts thermal energy directly into electrical energy
a differential device and the output is related to the DIFFERENCE in temperature between the hot junction and the cold junction
a junction between two dissimilar metals, usually welded or brazed
a junction formed from two dissimilar metals
a kind of thermometer that senses temperature in a different way than a mercury thermometer
a metallic strip or wire that produces an electromagnetic potential (voltage) when the two ends (junctions) are at different temperatures
an assembly of two wires of unlike metals joined at one end, the hot end
a neat idea but is no use without a temperature gradient
an electrical part that is made up of very thin strips of dissimilar metals
a pair of dissimilar conductors joined at one point, in a way that causes an electromotive force (EMF) to develop due to the thermoelectric effects
a sensor for measuring temperature
a sensor for measuring temperatu vpmt
a sensor for the temperature that measures
a sensor that generates an electrical potential related to the temperature
a sensor that measures temperature
a simple device used to measure temperature electrically
a temperature reading devise made up of two dissimilar metals that when heated produce a thermoelectric current
a temperature sensing device containing one or more junctions of two dissimilar metals which produce an electrical potential that is a measure of the temperature of the medium to which the junctions are exposed
a thermoelectrial device used to exactly measure temperatures, specially that consist of two united dissimilar metals so that a generated potential difference between the meeting points measures the temperature
a thermoelectric device that is used to measure temperatures accurately
a thermoelectric sensor that produces a voltage that may be
a wire junction made of two dissimilar metals
A device consisting of two pieces of dissimilar metals joined together at one end (hot junction). When the hot junction is heated, the thermocouple produces DC voltage across the other end. Used to power thermoelectric gas valves.
The junction of two dissimilar metals. A small voltage is generated at this junction, increasing as its temperature rises.
Device that generates electricity, using the principle that if two unlike metals are joined together and the junction is heated, a low voltage will develop across the ends.
a pair of junctions of two fine wires (dissimilar materials) that produces a small voltage proportional to the difference in temperature between the two junctions. A number of thermocouples arranged in series form a thermopile.
Wire assembly used with a control device to sense temperature.
A device made of two unlike metals that generates electricity when there is a difference in temperature from one end to the other. Thermocouples have a hot and cold junction.
A device use to measure the temperature in a furnace.
The temperature sensing probe of a pyrometer. It's inserted into the kiln chamber to measure temperature.
A device for measuring temperature where two electrical conductors of dissimilar metals are joined at the point of heat application and a resulting voltage difference, directly proportional to the temperature, is developed across the free ends. Reference to standard tables is made to determine the temperature.
A bimetallic device to measure temperature electrically.
A temperature measurement component on the Closure catheter that lets the physician know the precise temperature of tissue being heated.
Small electric generator. Electron flow between the hot junction of 1200 degrees F and cold junction of 600 degrees F creates millivoltage.
Popular temperature sensor because of its low cost, wide operating range and ruggedness. Consists of two dissimilar metals joined together, making a continuous loop. When one junction has a different temperature from the other an electromotive force (voltage) occurs. There are several types of thermocouples, constructed from different metals and with differing temperature ranges and accuracies. More details of thermocouples are in Issue 5 of our newsletter, Monitor.
Bimetal probe that measures the kiln's temperature.
A thick copper wire that acts as a safety device on a gas burner. If the pilot light for the burner goes out, the sensor on the end of the wire cools and prevents the flow of gas to the burner.
A junction of two dissimilar metals that produces a voltage when heated. [ Thermocouple Wire Manufacturers
A device consisting of two pieces of dissimilar metals joined together at one end (hot junction). When the hot junction is heated, the thermocouple produces DC millivolts between 25-30 millivolts. Used to power the gas safety valve.
A temperature sensor based on the principle that a voltage is produced when two dissimilar metals. The junction produces a voltage in proportion to the difference in temperature between the measuring junction and the reference junction.
A device consisting of two dissimilar metals in physical contact, which when heated, will develop an emf output.
Measures the difference in potential created at the junction of two different metal wires, which feed from the measuring instrument. ( http://www.thermocouple-assemblies.com)
Two dissimilar metals connected at a point, that produce an electrical current whose magnitude is dependent upon the temperature at the junction point.
A device that can convert heat into an Electromotive Force (emf), which can then be used to generate a current flow; constructed of two dissimilar metals joined together at each end.
The junction of two dissimilar metals which has a voltage output proportional to the difference in temperature between the hot junction and the lead wires (cold junction) (refer to Seebeck emf).
A small probe and wire cable you can install with your Pizza Oven that will output the temperature of the oven at that spot in the oven to a temperature display.
A device consisting of two dissimilar metals joined together at both ends. The thermoelectric voltage developed between the two junctions is proportional to the temperature difference between the junctions. Thus the device is used to measure the temperature at one of the junctions when the other is held at a fixed, known temperature.
A safety device that automatically turns off gas flowing to the pilot if the flame goes out.
A 2-wire temperature measurement sensor constructed of two dissimilar metals which form a junction. Current flows from one metal to the other in proportion to temperature. A millivolt signal is then measured by a thermometer or other device to display temperature.
A temperature sensor made by fusing together dissimilar metals. The junction produces a small voltage (referred to as the Seebeck voltage) that varies as a function of temperature.
A temperature-sensing element which converts thermal energy directly into electrical energy. In its basic form it consists of two dissimilar metallic conductors connected in a closed loop. Each junction forms a thermocouple. If one thermocouple is maintained at a temperature different from that of the other, an electrical current proportional to this temperature difference will flow in the circuit. The value varies with the materials used. Couples of copper and constantan, which generate approximately 40 microvolts per °C of couple temperature difference, are often used for meteorological purposes.
A probe that consists of two dissimilar metals joined at the hot junction. When heated it produces a small electrical current that passes down the Centre of s co-axial conductor to an electro-magnetic valve located in the FFD.
A temperature measuring device.
A device that monitors the pilot flame of a pilot model propane appliance. If the pilot flame is extinguished, the thermocouple causes the gas valve to shut off the flow of gas to both the pilot flame and the main burner.
A thermocouple is made up of two dissimilar metal conductors, known as thermoelements, joined so as to produce a thermal EMF which varies with temperature.
A junction of two dissimilar metals used to measure temperature. The output is a non-linear millivolt signal proportional to the temperature differential between the junction and the point of voltage measurement. See also RTD, LVDT, and Cold Junction Compensation.
A device for gas burners which deactivates the main gas valve if the pilot light goes out on a furnace.
A device to detect temperature that contains two dissimilar metals which generate voltage as a function of temperature. ( http://www.thermocouple-assemblies.com)
A device for the measurement of temperature based on the voltage generated when two dissimilar conductors are heated in contact e.g. copper/constantan , chrome/alumel, platinum/rhodium etc.
Two dissimilar metals, which, when heated, produce a small electrical charge called millivolts. Situated near the pilot of gas appliances.
A device for measuring temperatures, consisting of lengths of two dissimilar metals or alloys that are electrically joined at one end and connected to a voltage-measuring instrument at the other end. When one junction is hotter than the other, a thermal electromotive force is produced that is roughly proportional to the difference in temperature between the hot and cold junctions.
An electric thermometer consisting of a conductor whose resistance to the flow of current is temperature-dependent; commonly used in radiosondes.
Converts (heat) into a low level DC voltage to measure temperature.
A thermocouple measures the temperture in the kiln. Heated metals can generate low voltage. The amount of valtage generated corresponds to specific temperatures.
Safety device that generates a small electrical current used to energize a safety magnet inside the gas valve.
A device which can measure temperatures, usually by contacting the device to be measured. The device is made from a junction of dissimilar metals, as the junction changes temperature, a voltage is created which is read by a previously calibrated meter.
A heat-sensing device made of two conductors of different metals joined at their ends. An electric current is produced when there is a difference in temperature between the ends.
temperature-sensing element that converts thermal energy directly into electrical energy. In its basic form it consists of two dissimilar metallic electrical conductors connected in a closed loop. Each junction forms a thermocouple. One thermocouple is maintained at a known temperature (usually 0°C or a measured temperature) and the other thermocouple is used to measure the unknown temperature. The signal voltage is a function of the temperature, and the smooth curve can be handled with a simple linear fit over a moderate temperature range. Different materials have different curves. Popular thermocouples (and change in voltage per °C) include iron- constantan (50 mv per °C), copper-constantan (38 mv per °C), and various platinum alloys. Thermocouples are also important in home furnaces to detect the pilot light or that the fuel has ignited. A chain of thermocouples, called a thermopile, can be used as a power supply if a source of heat and cold is available.
A temperature sensor that includes a junction of two different metals. Temperature can be derived from the voltage produced at the contact point of the metals. Opto 22 SNAP I/O analog input modules, such as the SNAP-AITM and the SNAP-AITM2, are available for connecting thermocouples to control systems.
A device for measuring temperatures by the use of two dissimilar metals in contact; the junction of these metals gives rise to a measurable electrical potential which varies with the temperature of the junction. Thermocouples are used to operate temperature indicators or heat controls.
A thermoelectric device consisting of two dissimilar metals joined so that a potential electrical difference generated between the points of contact is a measure of the temperature difference between the points.
A device, consisting of two dissimilar metallic conductors in contact. that produces an electrical current whose magnitude depends upon the temperature of the junction. The resulting temperature measurement feeds into a pyrometer to help monitor and control the temperature of a barrel or nozzle. The thermocouple is housed in a steel tubing adapter.
A safety device on a pilot light gas ignition system. If the thermocouple isn't being warmed by the pilot light, it shuts off the flow of gas.
A thick copper wire with a sensor on the end, which cools and prevents the flow of gas to the burner if the pilot light goes out.
An electronic component used to sense temperature. A temperature-sensitive junction of two dissimilar materials produces a small voltage (typically 50 µV/°C). [ more
A temperature sensor created by joining two dissimilar metals. The junction produces a small voltage as a function of the temperature.
A device consisting of two dissimilar conductors with their ends connected together. When the two junctions are at different temperatures, a small voltage is generated.
A pair of dissimilar conductors joined to produce a thermoelectric effect and used to accurately determine temperature. Thermocouples are used in laboratory testing of motors to determine the internal temperature of the motor winding.
A device used to measure temperature, consisting of two dissimilar metals joined together so that the difference in voltage can be measured. Voltage changes in proportion to temperature, therefore the voltage difference indicates temperature differences.
A temperature measuring instrument.
Temperature transducer consisting of two dissimilar metals welded together at one end to form a junction that when heated will generate a voltage.
In electronics, thermocouples are a widely used type of temperature sensor and can also be used as a means to convert thermal potential difference into electric potential difference. They are cheap and interchangeable, have standard connectors, and can measure a wide range of temperatures. The main limitation is accuracy; system errors of less than 1 °C can be difficult to achieve.