# Temperature Measurement **URL:** https://forumautomation.com/c/field-instrumentation/temperature-measurement/34.md [Latest](https://forumautomation.com/latest.md) · [Categories](https://forumautomation.com/categories.md) · [Tags](https://forumautomation.com/tags.md) --- ## [How to identify thermocouple and RTD?](https://forumautomation.com/t/how-to-identify-thermocouple-and-rtd/1299)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [August 31, 2016, 4:03am UTC](https://forumautomation.com/t/how-to-identify-thermocouple-and-rtd/1299 "2016-08-31T04:03:35Z")
How to identify whether temperature sensor is RTD or Thermocouple? 1.Lead Wires RTD has two,three or four leads per sensing element Thermocouple has two leads per junction RTD typically have red,white,green or black le… --- ## [What is RTD wire compensation?](https://forumautomation.com/t/what-is-rtd-wire-compensation/2862)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 1\ **Last updated:** [August 14, 2024, 10:21am UTC](https://forumautomation.com/t/what-is-rtd-wire-compensation/2862 "2024-08-14T10:21:04Z")
RTDs (Resistance Temperature Detectors) are temperature detectors which change their resistance when there is a change in temperature. RTDs are used for continuous temperature measurement, which shows positive temperatur… --- ## [Thermocouple signal converters](https://forumautomation.com/t/thermocouple-signal-converters/3344)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [March 27, 2018, 7:48am UTC](https://forumautomation.com/t/thermocouple-signal-converters/3344 "2018-03-27T07:48:09Z")
What is a thermocouple? l A thermocouple is an active transducer which measures temperature, which works under the principle of Seebeck, Peltier, Thomson effect. The thermocouple is the transducer which directly conv… --- ## [What is Heat exchanger? Applications of Heat exchangers](https://forumautomation.com/t/what-is-heat-exchanger-applications-of-heat-exchangers/6143)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [March 25, 2019, 4:05pm UTC](https://forumautomation.com/t/what-is-heat-exchanger-applications-of-heat-exchangers/6143 "2019-03-25T16:05:42Z")
What is heat exchanger? Heat Exchanger (HE) is a heat exchanger equipment between two fluids with different temperatures and heat. One fluid gives heat, while the other receives heat. The need for fluids at a certain tem… --- ## [Thermowells and Selection of thermowell](https://forumautomation.com/t/thermowells-and-selection-of-thermowell/2995)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [January 17, 2018, 7:34pm UTC](https://forumautomation.com/t/thermowells-and-selection-of-thermowell/2995 "2018-01-17T19:34:26Z")
What are Thermowells? Thermowells are one of the most important accessories used in temperature measurement. A temperature sensor is placed in the flow stream to measure the temperature can be affected by pressure, flo… --- ## [What are the advantages and disadvantages of thermocouple?](https://forumautomation.com/t/what-are-the-advantages-and-disadvantages-of-thermocouple/1297)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 3\ **Last updated:** [December 24, 2018, 5:06am UTC](https://forumautomation.com/t/what-are-the-advantages-and-disadvantages-of-thermocouple/1297 "2018-12-24T05:06:21Z")
Advantages of Thermocouple 1.Very wide temperature range (1.2 K to 2300 deg C) 2.Fast response time 3.Available in small sheath sizes 4.Low initial cost 5.Durable Disadvantages of Thermocouple 1.Decreased accuracy com… --- ## [What is an RTD & Pt100](https://forumautomation.com/t/what-is-an-rtd-pt100/89)
**Author:** [@instrumen](https://forumautomation.com/u/instrumen)\ **Replies:** 1\ **Last updated:** [September 6, 2019, 12:25pm UTC](https://forumautomation.com/t/what-is-an-rtd-pt100/89 "2019-09-06T12:25:34Z")
RTD – Resistance Temperature Detector RTD is a positive temperature coefficient resistance which provides a linear rise in its resistance verses the rise in temperature Pt 100 platinum resistance 100 Ohms --- ## [Basics of Temperature Measurement](https://forumautomation.com/t/basics-of-temperature-measurement/690)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 2\ **Last updated:** [December 27, 2015, 5:21am UTC](https://forumautomation.com/t/basics-of-temperature-measurement/690 "2015-12-27T05:21:51Z")
Major Terms used in Temperature measurement Thermocouple Measure temperature by correlating the the voltage differential between the junction of two different metal alloys and a reference voltage to temperature RTD M… --- ## [General Classification of Temperature Measuring Instrument](https://forumautomation.com/t/general-classification-of-temperature-measuring-instrument/1471)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [October 30, 2016, 4:58pm UTC](https://forumautomation.com/t/general-classification-of-temperature-measuring-instrument/1471 "2016-10-30T16:58:04Z")
Instrument measuring temperature may be divided into two general groups. 1.Thermometer - Instruments inserted in or attached to the substances or body that is to be measured.Thermometer depend on heat conduction or conv… --- ## [Thermocouple Transducer | How to costruct a Thermocouple device at home?](https://forumautomation.com/t/thermocouple-transducer-how-to-costruct-a-thermocouple-device-at-home/2362)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [September 30, 2017, 1:51pm UTC](https://forumautomation.com/t/thermocouple-transducer-how-to-costruct-a-thermocouple-device-at-home/2362 "2017-09-30T13:51:15Z")
A thermoelectric transducer is an active transducers, which doesn’t need any auxiliary power sources for it’s working. A thermocouple converts thermal energy into EMF. Thermocouple is simply made by joining two dissim… --- ## [Thermowell Placement Perfection: Best Practices Guide](https://forumautomation.com/t/thermowell-placement-perfection-best-practices-guide/11469)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 0\ **Last updated:** [September 12, 2023, 2:33am UTC](https://forumautomation.com/t/thermowell-placement-perfection-best-practices-guide/11469 "2023-09-12T02:33:09Z")
The precise installation of a thermowell is critical for accurate temperature measurement and the protection of both the sensor and the process. Thermowells are often used to protect temperature sensors from harsh proces… --- ## [Comparison between temperature measuring devices](https://forumautomation.com/t/comparison-between-temperature-measuring-devices/3390)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [April 9, 2018, 11:48am UTC](https://forumautomation.com/t/comparison-between-temperature-measuring-devices/3390 "2018-04-09T11:48:55Z")
The four most common temperature transducers are thermocouples, resistance-temperature detector’s (RTD’s), thermistors, and integrated circuit sensors. Here we are discussing about advantages and disadvantages of each d… --- ## [How to reduce noise in thermocouple installation?](https://forumautomation.com/t/how-to-reduce-noise-in-thermocouple-installation/7079)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [September 3, 2019, 6:28pm UTC](https://forumautomation.com/t/how-to-reduce-noise-in-thermocouple-installation/7079 "2019-09-03T18:28:29Z")
Two distinct metal alloys are joined together to form a thermocouple at a stage called a junction. This junction is called the hot junction or measurement. The leads of the thermocouple are generally connected to an indi… --- ## [Thermocouple Circuit Considerations](https://forumautomation.com/t/thermocouple-circuit-considerations/6233)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [April 10, 2019, 8:08pm UTC](https://forumautomation.com/t/thermocouple-circuit-considerations/6233 "2019-04-10T20:08:27Z")
A circuit of thermocouples is like any other circuit of electricity. There is one or more EMF sources that can be batteries, a generator, or the hot and cold junctions in this case. There is a load, the indicator, and to… --- ## [How to select correct thermowell for temperature measurement application?](https://forumautomation.com/t/how-to-select-correct-thermowell-for-temperature-measurement-application/952)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [April 2, 2016, 3:54am UTC](https://forumautomation.com/t/how-to-select-correct-thermowell-for-temperature-measurement-application/952 "2016-04-02T03:54:23Z")
Selection Of Thermowell You need to find out answers for 3 questions for selecting correct thermowell . 1.What type of connection you are making to the process ? Most common type of thermowell connections are a)Thre… --- ## [Why use signal converter pt100](https://forumautomation.com/t/why-use-signal-converter-pt100/3101)
**Author:** [@huuthanh0991](https://forumautomation.com/u/huuthanh0991)\ **Replies:** 0\ **Last updated:** [February 6, 2018, 4:03pm UTC](https://forumautomation.com/t/why-use-signal-converter-pt100/3101 "2018-02-06T16:03:14Z")
Why use the pt100 signal converter ? What is Pt100 ? This will be answered in this article. If you have any problems with the registration process or your post, please contact us… Thank you ! What is Pt100? Pt100 is a… --- ## [Advantages and disadvantages of an RTD over a thermocouple](https://forumautomation.com/t/advantages-and-disadvantages-of-an-rtd-over-a-thermocouple/90)
**Author:** [@instrumen](https://forumautomation.com/u/instrumen)\ **Replies:** 0\ **Last updated:** [October 2, 2014, 6:29pm UTC](https://forumautomation.com/t/advantages-and-disadvantages-of-an-rtd-over-a-thermocouple/90 "2014-10-02T18:29:22Z")
RTDs are accurate at a lower range of temperature measurement such as -200 Deg C to +200 Deg C. RTDs are expensive compared to Thermocouples, also there are limitations in measuring at the higher range of temperature --- ## [Temperature sensor location considerations](https://forumautomation.com/t/temperature-sensor-location-considerations/6239)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [April 11, 2019, 5:38pm UTC](https://forumautomation.com/t/temperature-sensor-location-considerations/6239 "2019-04-11T17:38:55Z")
Careful consideration must be given to the location of temperature sensing probes in order to obtain accurate temperature measurement. Large measurement errors in service may be due to the wrong choice of instrument, but… --- ## [What is Temperature Sensor and its Working Principle?](https://forumautomation.com/t/what-is-temperature-sensor-and-its-working-principle/9947)
**Author:** [@Ajmal\_ismail](https://forumautomation.com/u/Ajmal_ismail)\ **Replies:** 1\ **Last updated:** [October 30, 2021, 2:11am UTC](https://forumautomation.com/t/what-is-temperature-sensor-and-its-working-principle/9947 "2021-10-30T02:11:25Z")
What is Temperature Sensor? A temperature sensor is a device that detects whether a substance is hot or cold. The device could be a thermocouple or a resistance temperature detector, which gives temperature measurement … --- ## [What is Pt 100 RTD?](https://forumautomation.com/t/what-is-pt-100-rtd/4208)
**Author:** [@areejsidhik](https://forumautomation.com/u/areejsidhik)\ **Replies:** 0\ **Last updated:** [July 24, 2018, 2:45pm UTC](https://forumautomation.com/t/what-is-pt-100-rtd/4208 "2018-07-24T14:45:45Z")
.Platinum resistance thermometers (PRT) offer excellent accuracy over a wide temperature range (-200 to +850 ° C). Standard sensors are available from many manufacturers with various precision specifications and numerous… --- ## [What is the meaning of "BST" in RTD Element specification?](https://forumautomation.com/t/what-is-the-meaning-of-bst-in-rtd-element-specification/1073)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [June 3, 2016, 7:15am UTC](https://forumautomation.com/t/what-is-the-meaning-of-bst-in-rtd-element-specification/1073 "2016-06-03T07:15:38Z")
BST- Bar Stock Threaded Bar Stock Threaded, refers to your thread length in your RTD element to suit for thermowell This refers to the overall length of the RTD from point of measurement of the temperature of the proce… --- ## [Name of the cable used to connect a thermocouple to a measuring instrument](https://forumautomation.com/t/name-of-the-cable-used-to-connect-a-thermocouple-to-a-measuring-instrument/87)
**Author:** [@instrumen](https://forumautomation.com/u/instrumen)\ **Replies:** 0\ **Last updated:** [October 2, 2014, 6:23pm UTC](https://forumautomation.com/t/name-of-the-cable-used-to-connect-a-thermocouple-to-a-measuring-instrument/87 "2014-10-02T18:23:28Z")
The intermediate cable used for connecting a thermocouple from the field to the control room instrument is called a ‘compensating cable’ --- ## [What is Cold junction compensation in Thermocouple?](https://forumautomation.com/t/what-is-cold-junction-compensation-in-thermocouple/2896)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [December 30, 2017, 12:27pm UTC](https://forumautomation.com/t/what-is-cold-junction-compensation-in-thermocouple/2896 "2017-12-30T12:27:26Z")
\##What is a thermocouple? When two dissimilar metal wires are joined together at one end, a voltage is produced at the other end that is approximately proportional to temperature. This form of an electrical temperatur… --- ## [Different thermocouple circuits](https://forumautomation.com/t/different-thermocouple-circuits/6301)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 1\ **Last updated:** [June 7, 2019, 4:09pm UTC](https://forumautomation.com/t/different-thermocouple-circuits/6301 "2019-06-07T16:09:21Z")
There are several variations in thermocouple circuits that solve or simplify some measurement problems. Differential thermocouples: Thermocouples are not good temperature differences measurement thermometers but, diffe… --- ## [How a Bimetallic thermometer work?](https://forumautomation.com/t/how-a-bimetallic-thermometer-work/3932)
**Author:** [@areejsidhik](https://forumautomation.com/u/areejsidhik)\ **Replies:** 0\ **Last updated:** [June 25, 2018, 2:42pm UTC](https://forumautomation.com/t/how-a-bimetallic-thermometer-work/3932 "2018-06-25T14:42:09Z")
Basic Principle: These thermometers use the following two principles: All metals change in dimension, which expand or contract when there is a change in temperature. The speed at which this expansion or contract… --- ## [IC (Integrated circuit) temperature transducers](https://forumautomation.com/t/ic-integrated-circuit-temperature-transducers/3509)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [April 26, 2018, 5:42pm UTC](https://forumautomation.com/t/ic-integrated-circuit-temperature-transducers/3509 "2018-04-26T17:42:28Z")
The Integrated circuit temperature sensor is commonly known as a local temperature sensor, that measures its own die temperature using the physical properties of bipolar transistors. Some local temperature sensors have a… --- ## [What are the advantages and disadvantages of RTD?](https://forumautomation.com/t/what-are-the-advantages-and-disadvantages-of-rtd/1298)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [August 31, 2016, 3:52am UTC](https://forumautomation.com/t/what-are-the-advantages-and-disadvantages-of-rtd/1298 "2016-08-31T03:52:00Z")
Advantages of RTD 1.Very stable output 2.Linear and predictable 3.Easy to verify and recalibrate 4.High accuracy 5.No special wire required for installation Disadvantages of RTD 1.More limited temperature range (-200 … --- ## [Pressure-spring thermometers- Temperature measurement](https://forumautomation.com/t/pressure-spring-thermometers-temperature-measurement/3463)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [April 21, 2018, 5:25pm UTC](https://forumautomation.com/t/pressure-spring-thermometers-temperature-measurement/3463 "2018-04-21T17:25:08Z")
Pressure-spring thermometers are used where remote indication is required, as opposed to glass and bimetallic devices, which give readings at the point of detection. The pressure system can be used to drive a chart recor… --- ## [What is the working principle of Radiation pyrometer? What are the advantages and disadvantages?](https://forumautomation.com/t/what-is-the-working-principle-of-radiation-pyrometer-what-are-the-advantages-and-disadvantages/2572)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [November 4, 2017, 8:44pm UTC](https://forumautomation.com/t/what-is-the-working-principle-of-radiation-pyrometer-what-are-the-advantages-and-disadvantages/2572 "2017-11-04T20:44:11Z")
Pyrometers are used to measure the temperature which is difficult to measure. They are non-contact devices, used to measure temperature above 1500 degree Celsius, contact devices may melt at this temperature. Construct… --- ## [What is cold junction compensation?](https://forumautomation.com/t/what-is-cold-junction-compensation/1662)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 1\ **Last updated:** [January 16, 2017, 3:51pm UTC](https://forumautomation.com/t/what-is-cold-junction-compensation/1662 "2017-01-16T15:51:14Z")
Cold Junction Compensation What is a junction? A point in your system where two dissimilar metals are coming contact with each other. Hot junction - refer to the jointed end of a thermocouple. Cold junction - refers … --- ## [Crystalline quartz thermometers and its working and construction](https://forumautomation.com/t/crystalline-quartz-thermometers-and-its-working-and-construction/3522)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [April 28, 2018, 6:11pm UTC](https://forumautomation.com/t/crystalline-quartz-thermometers-and-its-working-and-construction/3522 "2018-04-28T18:11:19Z")
The quartz crystal resonant frequency is temperature dependent, hence quartz resonant frequency measurement is a relation of temperature at which the crystal is. Quartz thermometers measure temperature automatically, qui… --- ## [Comparison between RTD and Thermocouple](https://forumautomation.com/t/comparison-between-rtd-and-thermocouple/2864)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [December 22, 2017, 7:43pm UTC](https://forumautomation.com/t/comparison-between-rtd-and-thermocouple/2864 "2017-12-22T19:43:04Z")
RTD and Thermocouples are temperature sensing devices widely used in industries. Both transducers are useful for many applications, choosing the transducer for the right purpose depends on many factors what we are going… --- ## [Types of temperature Switches](https://forumautomation.com/t/types-of-temperature-switches/2868)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 1\ **Last updated:** [June 7, 2019, 4:10pm UTC](https://forumautomation.com/t/types-of-temperature-switches/2868 "2019-06-07T16:10:38Z")
Temperature switches are mechanisms used to measure or sense the variation of temperature. The temperature change causes the mechanism to change something in it and which converted to another form, at the other end and t… --- ## [What is duplex thermocouple?](https://forumautomation.com/t/what-is-duplex-thermocouple/508)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [October 14, 2015, 1:57pm UTC](https://forumautomation.com/t/what-is-duplex-thermocouple/508 "2015-10-14T13:57:22Z")
Duplex temperature sensors are ones that have two actual elements and separate wiring available for each, but in one sheath. This allows an operator to switch over from an element that has gone bad to a good one, without… --- ## [Grounded thermocouple](https://forumautomation.com/t/grounded-thermocouple/1209)
**Author:** [@automate](https://forumautomation.com/u/automate)\ **Replies:** 3\ **Last updated:** [August 7, 2016, 7:20am UTC](https://forumautomation.com/t/grounded-thermocouple/1209 "2016-08-07T07:20:07Z")
Does anyone tell why we need to ground thermocouple element head and which process application we will use grounded and ungrounded thermocouple --- ## [What are pyrometers? Types of pyrometers (Non contacting type temperature measurement)](https://forumautomation.com/t/what-are-pyrometers-types-of-pyrometers-non-contacting-type-temperature-measurement/5299)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [November 24, 2018, 5:27pm UTC](https://forumautomation.com/t/what-are-pyrometers-types-of-pyrometers-non-contacting-type-temperature-measurement/5299 "2018-11-24T17:27:25Z")
What are pyrometers? Pyrometry measures the temperature of objects without touching them. Each object whose temperature is above absolute zero (-273.15 ° C) emits radiation. This emission is heat radiation and depends on… --- ## [How does a Infrared Thermometer(IRT) works?](https://forumautomation.com/t/how-does-a-infrared-thermometer-irt-works/2873)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [December 25, 2017, 8:47pm UTC](https://forumautomation.com/t/how-does-a-infrared-thermometer-irt-works/2873 "2017-12-25T20:47:42Z")
Working principle of IRT: Each body above absolute temperature emits electromagnetic radiation, which is related to the actual temperature of the body. A part of this radiation is the infrared radiation, which can be u… --- ## [What are Thermistors and how they work?What are types of thermistor?](https://forumautomation.com/t/what-are-thermistors-and-how-they-work-what-are-types-of-thermistor/2842)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [December 19, 2017, 3:19pm UTC](https://forumautomation.com/t/what-are-thermistors-and-how-they-work-what-are-types-of-thermistor/2842 "2017-12-19T15:19:12Z")
What are thermistors? A thermistor is one of the many temperature sensors used in temperature measurement. The thermistors are elements or semiconductors which varies their resistance when there is a change in temperat… --- ## [Compare the advantages and disadvantages of RTD,Thermocouple and Thermistor](https://forumautomation.com/t/compare-the-advantages-and-disadvantages-of-rtd-thermocouple-and-thermistor/1392)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [September 24, 2016, 4:44am UTC](https://forumautomation.com/t/compare-the-advantages-and-disadvantages-of-rtd-thermocouple-and-thermistor/1392 "2016-09-24T04:44:39Z")
Advantages of RTD 1.Most stable 2.Most accurate 3.More linear than thermocouple Disadvantages of RTD 1.Expensive 2.Current source required 3.Low absolute resistance 4.self heating Advantages of Thermocouple 1.Self p… --- ## [What is Temperature transmitter? Advantages and Disadvantages of RTD?](https://forumautomation.com/t/what-is-temperature-transmitter-advantages-and-disadvantages-of-rtd/694)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 1\ **Last updated:** [December 27, 2015, 6:32am UTC](https://forumautomation.com/t/what-is-temperature-transmitter-advantages-and-disadvantages-of-rtd/694 "2015-12-27T06:32:25Z")
Temperature Transmitter There are two ways to get the reading from the temperature device to its final destination 1.Attach the end unit directly to the low -level signal (Ohm or mv) which may or may not require the us… --- ## [How to measure temperature of a flowing stream? | What is thermowell?](https://forumautomation.com/t/how-to-measure-temperature-of-a-flowing-stream-what-is-thermowell/2473)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [October 18, 2017, 12:17pm UTC](https://forumautomation.com/t/how-to-measure-temperature-of-a-flowing-stream-what-is-thermowell/2473 "2017-10-18T12:17:55Z")
For temperature measurement of a flowing stream which is flowing through a closed pipeline, we use Thermowells. Using Thermowells we need not disturb or shutting down the process to measure the temperature. Thermowells … --- ## [Why thermocouple is an active transducer?](https://forumautomation.com/t/why-thermocouple-is-an-active-transducer/4176)
**Author:** [@areejsidhik](https://forumautomation.com/u/areejsidhik)\ **Replies:** 0\ **Last updated:** [July 21, 2018, 6:09am UTC](https://forumautomation.com/t/why-thermocouple-is-an-active-transducer/4176 "2018-07-21T06:09:57Z")
The output of the thermocouple is voltage difference on its terminals that is proportional to the corresponding temperature .But when we look in to the case of passive transducers or sensors the output will be change in … --- ## [How to install Thermowell?](https://forumautomation.com/t/how-to-install-thermowell/7783)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [January 23, 2020, 6:47pm UTC](https://forumautomation.com/t/how-to-install-thermowell/7783 "2020-01-23T18:47:19Z")
Thermowell is a crucial instrument to measure temperature in the process industry. They provide encapsulation and protect the sensor from direct contact with process fluid in the pipeline, tank etc., All this with all… --- ## [How to install Temperature measurement instrument properly?](https://forumautomation.com/t/how-to-install-temperature-measurement-instrument-properly/953)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [April 2, 2016, 5:04am UTC](https://forumautomation.com/t/how-to-install-temperature-measurement-instrument-properly/953 "2016-04-02T05:04:04Z")
Best Practices - Temperature Measuring Instrument Installation It is very important to install the instrument correct for accurate temperature measurement Four Consideration - 1.Thermowell Installation The proper The… --- ## [Color code of Thermocouple in various countries- USA UK Germany Japan IEC](https://forumautomation.com/t/color-code-of-thermocouple-in-various-countries-usa-uk-germany-japan-iec/201)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [December 26, 2014, 3:11am UTC](https://forumautomation.com/t/color-code-of-thermocouple-in-various-countries-usa-uk-germany-japan-iec/201 "2014-12-26T03:11:07Z")
International thermocouple color code in Various countries United States of America ,United Kingdom ,Germany IEC Different types of Thermocouple extension types are Iron - Constantan Chromel Alumel Copper Constantan … --- ## [What is DTS (Distributed temperature sensing)?](https://forumautomation.com/t/what-is-dts-distributed-temperature-sensing/1259)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [August 15, 2016, 2:15am UTC](https://forumautomation.com/t/what-is-dts-distributed-temperature-sensing/1259 "2016-08-15T02:15:43Z")
DTS - Distributed Temperature Sensing Fiber optic distributed temperature sensing method using the raman effect was developed by University of southhampton UK. Fiber optic DTS utilize similar optical Time-Domain Reflec… --- ## [What are the types of thermocouple?](https://forumautomation.com/t/what-are-the-types-of-thermocouple/2593)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [November 6, 2017, 8:19pm UTC](https://forumautomation.com/t/what-are-the-types-of-thermocouple/2593 "2017-11-06T20:19:41Z")
Thermocouples are transducers used to measure temperature. When two dissimilar metals are connected together to form a junction. The junction creates a voltage difference across the wire when there is temperature differe… --- ## [What are thermostats?](https://forumautomation.com/t/what-are-thermostats/4911)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [October 11, 2018, 4:59pm UTC](https://forumautomation.com/t/what-are-thermostats/4911 "2018-10-11T16:59:37Z")
Thermostats: The thermostat is a device to regulate the temperature of the system so that the temperature of the system is maintained near the desired setpoint temperature. Thermostat is a tool to regulate the temperatur… --- ## [What is thermowell?](https://forumautomation.com/t/what-is-thermowell/1483)
**Author:** [@automate](https://forumautomation.com/u/automate)\ **Replies:** 0\ **Last updated:** [November 5, 2016, 4:41am UTC](https://forumautomation.com/t/what-is-thermowell/1483 "2016-11-05T04:41:56Z")
Thermowell protects the temperature sensors( RTD or Thermocouple) from any contamination or corrosion caused by the gases or liquids being measured. Why to use thermowell ? 1.Protect Temperature sensor from a)Excessive… --- ## [Thermal Imaging for temperature sensing and Electrical inspection](https://forumautomation.com/t/thermal-imaging-for-temperature-sensing-and-electrical-inspection/2911)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [January 2, 2018, 4:01pm UTC](https://forumautomation.com/t/thermal-imaging-for-temperature-sensing-and-electrical-inspection/2911 "2018-01-02T16:01:59Z")
\##What is thermal imaging technique? Thermal imaging is the non-contacting temperature sensing technique. Thermal imaging cameras(TIC) uses infrared radiation sensors and it provides a graphic display of objects in it… [Next page](https://forumautomation.com/c/field-instrumentation/temperature-measurement/34.md?page=1&per_page=50)