Reduce Scrapping and Smelting, Promote Component Reuse > Complete Machines
> 1960 1980
> Cook County
> 10 thermocouple 88 deg f sensor thermosensor? j type 24
10 thermocouple 88 deg f sensor thermosensor? j type 24
10 Thermocouple 88 Deg F Sensor Thermosensor? J Type 24
This is for 10 unused in good condition Thermocouple? Heater? Sensor? Thermosenser? or Probe? or some other part.
Part #: J 08 (This may mean that it is a Type J?)
Numbers stamped in brass: 19, and 88 F (so I think that it is for sensing 88 degrees F)?
POSSIBLE SPECS ON THIS THERMOCOUPLE:
CODE #: 88F, TURN DOWN (mV): 4, OPEN CIRCUIT RANGE (mV): 20-28, MINIMUM FIXED LOAD VOLTAGE (mV): 8
A thermocouple works by generating a small amount of electricity when heated, keeping the gas valve open. The gas control valve is essentially a "dead man switch"... if the pilot light goes out, the electricity stops flowing, the switch opens and the valve closes.
The thermocouple is the pilot's, well, co-pilot! It is the electronic device that senses if the pilot flame is hot enough to sustain burning the gas fuel from the burner. If the thermocouple thinks it's safe, then it keeps open the main gas valve located in the pilot assembly. If the thermocouple does not sense enough heat from the pilot flame (such as when the pilot is out), then the thermocouple shuts off the gas valve to the burners.
So what is this thing and how does it work? Well the thermocouple (technically called a thermocouple junction) is a device that contains two metal wires welded at the ends and placed inside a protective metal case. The thermocouple sensor is found at the business end of the pilot flame and is designed to be placed in the hottest part of the flame. The other end is connected to the pilot valve body. As the thermocouple heats up, it produces a small amount of electricity and when it gets hot enough from the pilot, send a signal to open the gas valve by using a solenoid operated by a 24 volt transformer. The thermocouple calls the shots, and by converting heat to an electrical signal, it allows the gas valve to open or close.
unused in good condition, but they are not perfectly straight and they have crimp marks in them at one end (I believe the crimps were done on purpose by the manufacturer because they are found on all of them in the same location).
