Find thermocouples including thermocouple assemblies, thermocouplers, resistance temperature detectors and more. From temperature sensors, thermistors, thermowells to RTD sensors, you will find the thermocouple you need. Use the time-saving Request for Quote tool to submit your inquiry to all the thermocouple manufacturers and suppliers you select.
Thermo Sensors Corporation is a manufacturer of thermocouples, thermocouple assemblies, thermowells and RTD probes. Providing the chemical, petrochemical, refining, food, pharmaceutical and many other industries with sensors of standard and special designs. Contact us for more information!
Wilcon Industries and our experienced staff are the premier designers and manufacturers of thermocouple assemblies, resistance temperature sensors and RTD sensors. Wilcon Industries' knowledgeable staff serves industries like petrochemical, aerospace, nuclear, research, industrial, plastic and more.
Thermal Devices is your source for stock or made-to-order thermocouples and RTDs, plus speedy delivery. Our line includes varieties of thermocouples and RTDs (melt bolt, ultra-high temp, variable depth, surface mount, etc.), thermowells, thermocouple wire, thermocouple & thermowell assemblies.
Connector Contacts can manufacture thermocouples according to your specific specs. Thermocouple materials are always in stock for you. We have served the connector industry for almost 4 decades. If you have thermocouple assembly questions we are the company when it comes to
thermocouple contacts.
Distributing and manufacturing control measurement products makes Thermo-Kinetics unique. We manufacture thermocouples and RTD sensors but also supply name brand instrumentation as well. For 4 decades our temperature sensor products have lead in the Canadian marketplace. ISO 9001:2000 certified.
Watlow Electric Manufacturing is a leading manufacturer of custom-engineered thermal systems comprised of industrial heaters, temperature sensors, controllers and software. Including a variety of temperature sensors such as thermistors, thermocouples and RTDs.
Thermocouples are temperature measuring devices. They
consist of two dissimilar metals connected at two points. When one point
is at a different temperature than the other a current or voltage is
developed and used in measurement. Thermocouples are widely used and
can be found in many everyday devices. For industrial purposes thermocouple
assemblies can be found in furnaces, pressure chambers, kilns, food production
ovens and most temperature sensitive applications. Common elements used
in thermocouples are copper, nickel, and silver.
Each of the metals used in thermocouples have specific capacities for
measuring certain temperature ranges. There are three functional classes
of thermocouple assemblies based on the metal used. Base metal thermocouples
are good for measuring temperatures under 1000 degrees Celsius. Noble
metal thermocouples measure up to about 2000 degrees. Lastly, Refractory
metal thermocouples can handle upward of 2600 degrees Celsius. Most thermocouple
assemblies are sheathed and are one of three junction types: grounded,
ungrounded or exposed. In an exposed thermocouple, the tip of it protrudes
out beyond the sheath, exposing it directly to the surrounding environment.
This provides fast response and reading of the temperature, but this
type of reading is limited to non-corrosive and non- pressurized situations.
Thermocouples often work together as part of a larger measurement or
other data
acquisition system. These systems are often computerized and have
automated capabilities. They gather information from one or more signal
inputs or sensor sources such as thermocouples and convert this information
into a digital form for further analysis.
While there are alternatives to thermocouples they are the most popular
temperature measuring device. Some of the advantages to using a thermocouple
are their low cost, wide temperature range, good repeatability and their
short response time. Thermocouples are generally not sensitive enough
for certain applications. It is important to evaluate the application
environment before purchasing or replacing a thermocouple. Some things
to consider when looking at thermocouples are the size and dimensions
needed, the number of thermocouple pairs, operating temperature and plug
requirements.
RTD Probes are wires made of a different homogeneous metal or alloy,
joined at one end to form a measuring junction.
RTD
sensors gauge temperatures with a bridge measurement.
RTD temperature transducers gather information on the change in resistance
of a metal wire element.
RTD thermocouple is a resistance temperature detector with a pair
of different metals joined at two points so a voltage results
when the
junctions are at different temperatures.
Thermistors are semiconductors with varying resistance that relates
to temperature.
Thermocouple assemblies are a collection of tubes,
wires and insulators. Often included to in classification with heating
elements.
( heating-elements.com )
Thermowells are used to protect temperature sensors.
Thermocouples and Thermocouples Manufacturers Terms
Ambient Temperature – The temperature of the
air surrounding the equipment.
Base metal – Any metal other than precious metal, such as copper,
aluminum, lead, nickel and tin.
Btu -- British thermal unit; a cuit for measuring a quantity of heat.
1 btu is the amount of heat required to raise the temperature of 1 pound
of water 1°F.
Calibration – Adjusting the equipment so readings and accepted
measurements are correlated so the value is accurate.
Celsius (centigrade) - A temperature scale defined by 0 °C at the
ice point and 100 °C at boiling point of water at sea level.
Color Code – Established by ANSI to distinguish wires for thermocouples.
Compensating Alloys – Alloys with similar thermoelectric properties
to the alloys in the thermocouple, used to connect the thermocouple to
the instrument.
Deviation - The difference between the value of the controlled variable
and the value at which it is being controlled.
Fahrenheit -The temperature scale defined by 32° at the ice point
and 212° at the boiling point of water at sea level.
Joule – Unit of thermal energy.
Junction – In a thermocouple where two different metals are joined.
Latent Heat - Expressed in BTU per pound. The amount of heat needed (absorbed)
to convert a pound of boiling water to a pound of steam.
Noble metal – A metal with high resistance to chemical effect,
especially corrosion and solution by organic acids; occasionally called
precious metal.
Probe - A generic term that is used to describe many types of temperature
sensors .
Refractory metal – Metal containing a coating consisting of material
with a high melting point. Used in high temperature capacity thermocouple
devices.
Radiationange --The transmission of energy by electromagnetic waves and
may become thermal energy when absorbed and increase in the temperature
of the absorbing body.
RTD - Stands for Resistance Temperature Detectors.
Sensitivity - The minimum change in a physical variable to which an instrument
can respond.
Sterling Cycle - Thermodynamic cycle commonly used to cool thermo graphic
detectors.
Therm - A measurement of heat equal to 100,000 btu.
Thermocouple - Measures the
difference in potential created at the junction of two different metal
wires which feed from the measuring instrument.
Thermopile – Many Thermocouples grouped together in a series to
increase the thermoelectric output.
