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thermocouple

A thermocouple is an electrical device consisting of two dissimilar electrical conductors forming an electrical junction. A thermocouple produces a temperature-dependent voltage as a result of the Seebeck effect, and this voltage can be interpreted to measure temperature. Thermocouples are widely used as temperature sensors.Commercial thermocouples are inexpensive, interchangeable, are supplied with standard connectors, and can measure a wide range of temperatures. In contrast to most other methods of temperature measurement, thermocouples are self powered and require no external form of excitation. The main limitation with thermocouples is accuracy; system errors of less than one degree Celsius (°C) can be difficult to achieve.Thermocouples are widely used in science and industry. Applications include temperature measurement for kilns, gas turbine exhaust, diesel engines, and other industrial processes. Thermocouples are also used in homes, offices and businesses as the temperature sensors in thermostats, and also as flame sensors in safety devices for gas-powered appliances.

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  1. G

    Is my gas burner an FSD problem or a thermocouple problem?

    I am troubleshooting a gas hob where one burner is reluctant to light. When it is lit and I blow the flame out the FSD on that burner cuts off immediately, whereas the others take 5-10 seconds as normal. I have tested the thermoucouple for continuity and also some sort of mV output (when held...
  2. C

    Gas bottle fire: Pilot light lifts and trips thermocouple

    I have a portable gas fire which keeps switching off. The pilot light lifts for 10 seconds, critically above the thermocouple and then the gas cuts out. It i smore noticeable when I walk past it and stir a slight breeze. I have blown out the pilot light assembly and it worked for an entire day...
  3. F

    Wood Burner back boiler with gravity rad system.

    Hi All...thx for the help in advance. I have recently installed a wood burner with back boiler heating system. Set up with gravity rad and header tank in loft. I have a recirculation pump installed that I have connected to the rad system that I turn on and off manually. I wanted to know how...
  4. Lee Davies

    Sourcing a thermocouple (Spade Connection)

    Hello all, Having trouble sourcing a thermocouple for a Bush G50SA. The thermocouple is a spade connector type at 900mm length and for the main oven. Anybody know where I can source one? I can't even find anything about the oven online. Regards LD
  5. T

    Ideal concorde cx 205 thermocouple

    HI, The pilot light went out over night and is refusing to stay alight. It lights when the knob is pressed in but goes out when it is slowly released after a minute or two. Do you think it needs a new Thermocouple or could it be something else?
  6. Captain.rick

    Thermocouple change on beko oven?

    Hi all, just asking if anyone has changed one of these? i need to and wasnt sure if a universal one will fit and how much work went into it? grill isnt sparking either, she probably best to renew the whole thing but being old she wants to "stick with what she knows" im still new to it and am...
  7. D

    HELP....myson Housewarmer Spectacular Back Boiler

    Hi there, I hoping to get some advice on an issue I have with my back boiler. I have a myson Housewarmer Spectacular back boiler and fire my issue is the boiler fire up then keeps cutting out ad starting again over and over no pattern to it just keeps stopping and starting. I did replace the...
  8. T

    Beko DVG 595W bottom oven thermocouple

    Hiya Guys have any of you guys replaced the bottom over thermo couple on this appliance? how much does it need to be stripped down... beko customer service is 'kin sh*t' can even get a manual off them. cheers
  9. J

    Vermont castings intrepid gas

    Hi, My engineer is having difficulty finding parts for my gas coal effect stove. I am looking for a thermocouple with interrupter for a Vermont Castings Intrepid Gas stove serial number 01224. The data plate also has other number 950/0096 and 63AN8790 if these are of assistance. I am...
  10. S

    Fitting a thermocouple to a Valor Dream 961

    Hi, please don't shout first time on this forum! Do you think it's possible for a competent DIY'er to replace the thermocouple on the Valor Dream 961 - don't all shout me down, if not I've seen the part for around £40 what should I expect fitting costs to be? cheers
  11. kris

    Thermocouple

    Hi guys just wanted your views, i still get the odd faulty thermocouples on BBU,s in ex council houses or replacing them in a service of the BBU,s ,, and a while back i ordered some off the internet and they were quite cheap compared to what they used to be , anyhow i found them to at best...
  12. gassafe

    Thermocouple with interpreter stat :(

    Gas fire The fault was a pilot not staying lit so I ordered a pilot assembly kit. Fitted it okay, but when releasing the button pilot cuts off immediately :( i disconnected overheat interrupter on thermostat & bridged with piece of wire, pilot stays lit & main burner works! I put multimeter...
  13. V

    Baxi Solo 2 40 RS Replace thermocouple - GSR job?

    I just wanted some advice on whether the job I need to do has to be done by someone who is GSR. I have a Baxi Solo 2 40 RS and the pilot won't stay lit, 99% sure it is the thermocouple, I have bought a new one and it seems extremely simple to replace. Is it a job that I need paperwork to prove...
  14. G

    belling 757 oven thermocouple

    posted a thread last week to see if anyone knew where to get instructions for this oven but got no reply. The reason im wanting it is to replace the thermocouple and want to know if anyone can point me in the right direction about changing it(mainly getting into the guts of the oven) and is it a...
  15. S

    Thermocouple

    When replacing a thermocouple is it necessary to replace the interruptor as well?
  16. F

    Radiant RSF 24 Thermocouple

    Morning people, had a call out last night to the above not staying a light. Seems the THERMOCOUPLE had gone, not a problem I thought just fit a universal thermocouple. But when I took the boiler apart the original thermocouple has a black lead running from the burner side of the thermocouple...
  17. S

    oven thermocouple?

    Did a safety check on an oven yesterday and found that when you turn the oven on it immediately lets through a lot of gas or a small amount according to what number the dial is on I.E on 1 the flame will light fairly small but on 9 it will come up to max flame without starting off small. The...
  18. T

    Iam firing away with the questions tonight :) Thermocouple testing

    I need to test a the thermocouple on a gas fire is this the correct way to do it? Multimeter - put it on DC; something like 200 Mv Positive to the outer core Unscrew thermocouple out of Gas valve Negative to the inner core Light the pilot and see if i get a reading
  19. B

    need mi or gc #

    does by some miracle anyone have the MI`s for this or a gc number i need a thermo coupling and a uni one dont fit , parts centre are struglling and its for a very importnant customer tarrr
  20. B

    thermistors

    when checking ch/dhw thermistors on a boiler breakdown what do you lads use to take the tempreture of the pipe work. went on a worcester breakdown course recently and the engineer/trainer there had a multimeter looking device with a piece of cable coming out from it that wrapped round the pipe...
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