Is Input to a Thermocouple a Step or Ramp?

  • Thread starter Thread starter Priya3
  • Start date Start date
  • Tags Tags
    Input Ramp
Click For Summary
The input to a thermocouple is debated as either a step or ramp function based on its thermal response. When immersed in a water bath, an instantaneous temperature change is considered a step input. However, due to the thermocouple's thermal mass, it takes time to settle, suggesting a ramp-like behavior. The discussion highlights the importance of understanding the time constant of thermal changes in this context. Ultimately, the thermocouple's response is a complex interplay between immediate voltage generation and gradual thermal adjustment.
Priya3
Messages
2
Reaction score
0
Is input to a thermocouple a step or ramp?
 
Engineering news on Phys.org
Welcome to PF.

Can you rephrase your question or give more details?
The input is a temperature. A thermocouple generates a very small voltage that is proportional to voltage.
http://en.wikipedia.org/wiki/Thermocouple
 
a thermocouple is a single capacity system..so when immersed in water bath what would be the input to the thermocouple at that instant...is thAT a ramp input or step input??
 
An instant change must be a step. A thermocouple has thermal mass so it will take time to exponentially settle towards a final value. That is closer to a ramp than a step. What is the time constant of the thermal change?
 

Thread 'Electric power distribution from powerplant to homes'

I am trying to understand how transferring electric from the powerplant to my house is more effective using high voltage. The suggested explanation that the current is equal to the power supply divided by the voltage, and hence higher voltage leads to lower current and as a result to a lower power loss on the conductives is very confusing me. I know that the current is determined by the voltage and the resistance, and not by a power capability - which defines a limit to the allowable...
View full post »

Similar threads

Wire strippers for duplex thermocouple wire?
  • · Replies 4 ·
Replies
4
Views
2K
K Type Thermocouple Probe short Circuited with Metallic Body
  • · Replies 2 ·
Replies
2
Views
2K
Calculating the resistance in a compensating circuit for a thermocouple
  • · Replies 8 ·
Replies
8
Views
2K
Maxwell Linear Generator (Input Power < Output Power and losses?)
  • · Replies 2 ·
Replies
2
Views
918
Removing thermocouple from stovetop
  • · Replies 10 ·
Replies
10
Views
5K
Op Amp with frequency compensation input
  • · Replies 2 ·
Replies
2
Views
1K
Calculating Input impedance of a CC amplifier
  • · Replies 9 ·
Replies
9
Views
2K
Thermocouple Type-K: 3 Wires & Ceramic Shield?
  • · Replies 30 ·
2
Replies
30
Views
4K
Fitting a thermocouple to a motor
  • · Replies 5 ·
Replies
5
Views
4K
Lawn/Garden Determining Ramp Length for Ground Clearance
  • · Replies 8 ·
Replies
8
Views
583