This is high quality temperature
controlled oven suitable for Four Probe Set-up, testing of
electronic components & study of temperature transducers
etc.. The oven has been designed for fast heating and cooling
rates which enhances the effectiveness of the controller.
While the basic design of the controller is around the PID
configuration for its obvious advantages, wastage of power
is avoided by using a Pulse Width Modulated (PWM) switch.
This combination has the advantages of both on-off controller
and linear PID controller. The result is a good stable and
accurate temperature control.
A platinum RTD has been used for sensing
the temperature. A wheatstone bridge and an instrumentation
amplifier are used for signal conditioning. Feedback circuit
ensures offset and linearity trimming to a great degree of
accuracy. The set and measured temperature are displayed on
3½ digit DPM through selector switch.
to 200° C
0.5° C (typical)
designed for Four Probe Set-Up/ Component testing (as
digit, 7 segment LED (12.5 mm) with autopolarity and decimal