that would be my bet too. Assuming the included sensor is comparable to the omega one, this works by placing the hot and cold junctions on the sensor, and running copper all the way back to the sensing circuit. any additional junctions on the way back to the meter can introduce additional thermal EMF if there exists a temperature differential.
This is definitely a classic instrument from the 70s. It's worth updating today. I know some people make them, but the price! A simple USB interface with a micro and this could be a killer consumer instrument for those green types trying to figure out how to make their house or beer cooler more efficient.
Please measure the difference in heat transfer of different materials. Aluminum is very fast so it's not so surprising how quickly is responded to the heat of your hand though the aluminum plate. I wonder if the device is sensitive enough to measure heat transfer thorough insulators such as ceramic or styrofoam.
The aluminum was amazing it instantly detected a tiny bit of energy through 5 cm (?) thick aluminum. I think Canadian Weather Service stations must use something similar they measure windchill in kcal/W^2.
My guess, after seeing the units on the display and the thermocouple: a machine that measures temperature in kilocalories per m^2 per hour Which I can almost make sense of in my head
Wow - That's some seriously interesting tech inside that puppy. Maybe patents can shed light on what's happening in the circuit? I'm thinking chopper amp maybe?
picovolts even. Two orders of magnitude smaller. I'm not sure if you can capture that without superconductors, but apparently they still use chopper amplifiers to do the measurement.
Danke dass du mir antwortest. Der andere ist The post apocalyptic Inventor. deinen Kanal hab ich erst vor kurzem entdeckt und deshalb hab ich noch nicht aboniert. bin aber gerade dabei.
Es ist auch mein Hobby an elektronik rumzuschrauben aber mein einziges equipment sind ein alter Lötkolben, ein Fehlerhaftes, halb kaputtes Labornetzgerät und ein paar Schraubendreher. für mehr reicht mein taschengeld leider nicht aus. Und meine Eltern elhalten meine Komponentensammlung für einen Berg Schrott.
Genau so ist es. deshalb muss ich wenn mein Netzgerät wie fast immer zu wenig Ampere liefert einen Märklintrafo, ein billigmultimeter und einen gleichrichter aus einem 20v netzteil nehmen. aber egal wie hoch ich den Trafo dreh, es kommen immet gleich viele Ampere raus, was es auch nicht besser macht.
It is mentioned in one academic paper by an Institute for Neutron Physics and Reactor Technology. Not as exciting as it sounds, they just measured temperature losses through the walls of a furnace.
Unless that wire is spring steel this would seem to be a very bad way to make ground with the cover. If there was any pressure on the case it would bend the wire back. When pressure is released from the case it would flex back, but the wire might stay and loose contact with the casel. Maybe it isn't an issue in real life.
Is "kcal" meant to be read as "kilocalories" or is it "k*cal" (k could be temperature differential)? Both could seem to fit the context, but it's representing units, so 'k' should not be a variable, so "kcal"k must be kilocalories. The heat transfer coefficient units = kilocalorie/meter^2 * hour °C
0...50000 selects the full scale reading, so 15 kcal/m²h is the most sensitive. 0,45...0,65 is the sensor specific µV value corresponding to 1 kcal/m²h.
