I need a Temp. Controller

[megbers]

I need a simple, cheap temp controller that uses a thermocouple and gives (or stops giving) voltage at a pre-set temperature. The omega single display controllers are way overkill for what i need. Any ideas? Thanks in advance.

 

[itsmoked]

If you need just one or two then the cheap single display controllers are a great way to go!

How else are you going to set the setpoint? Provide power? scale the output? Provide thermocouple referencing? Calibrate the results? Set the process value?

Keith Cress
Flamin Systems, Inc.-

http://www.flaminsystems.com

 

[analogkid2digitalman]

Unless he is just looking for a switch, see:

http://www.omega.com/pptst/TSW.html

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"It's the questions that drive us"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 

[VEBill]

Radio Shack used to sell white plastic, digital temperature controllers for about $20. But if I recall correctly, they used a tethered diode as the sensor.

 

[Compositepro]

Thermocouple controllers are not cheap because of all the things mentioned above. The requirement for a cold junction reference means that an rtd or other thermometer is incorporated in every thermocouple thermometer for it to work.

If you want cheap go for a thermostatic switch.

 

[itsmoked]

Good grief a2dkid, that switch costs as much as a controller!

Keith Cress
Flamin Systems, Inc.-

http://www.flaminsystems.com

 

[megbers]

"If you want cheap go for a thermostatic switch. "

perfect, just what i was lookin for, thanks to all!!

http://www.surplussales.com/Thermal/Thermal-1.html

 

[devittjl]

Try a simple bulb and capillary thermostat. Chech out

http://www.selcoproducts.com