24/31
PID algorithm determines 50% output value, the actual power output will be 250 watts.
This function can be used in two situations.
1) When you have a very powerful heater and using a very small pot of water to cook at
very low temperature, for example, a 1400 watts heater with a one litter (1 qt) pot of
water at 130°F. The heater is too powerful for the small water volume. The moment it is
on, it releases too much energy to cause the temperature to overshoot. Although it is
still possible to stabilize the temperature with proper PID parameters, it is much easier
to control if you limit the maximum output to 25%. Ideally, an optimized temperature
control system should consume about 25% of the heater power at set temperature
(steady state), for example, if you found out that only 50 watts of energy is needed to
maintain the temperature at 60°C (141°F), ideally you should use only 200 watts heater
for this job. Too much power will make the system over react too quickly. Too little power
will make the system too slow in response. By using the Out function, you can make the
1400 watts heater to act as a 200 Watts heater for stable temperature control.
2) When the cooker consumes more power than controller can handle, for example, if
you have a 12A, 120V AC heater and your cooker contains more than 38 Liter (10
Gallon) of water. It might take more than 90 minutes of full power heating for controller
to heat up the pot. Long time of full power operation might cause the controller to
overheat. You can set the output to 80%. It will prevent the controller from over heat by
staying a full power too long. For details, please see Appendix 1.
Note 14. Temp Unit:
You can set the display either Celsius (°C) or Fahrenheit (°F).
Note 15. Probe calibration offsets:
These parameters are used to make the input offset
to compensate the error produced by sensor. e.g. if the temperature displays of cabinet
probe (Probe 1) is 2°C in ice water mixture, set
Smkr Probe Offset
= -2 will make the
display to shown 0 degree. Three offset parameters are available for three probes.
Smkr
Probe Offset
is for cabinet probe (Probe 1);
Fd Probe Offset
is for food internal probe
(Probe 2);
Probe3 Offset
is for Probe 3.
Note 16. Probe3 Enabled:
Probe 3 Readout Option. When this option is set to “Yes”,
right bottom parameter in normal display mode will show the temperature of probe 3.
When this option is set to “No”, that location will show the current power output percentage
instead. Please check section 3.1 for details.
Note 17. Step End Alarm:
Step ending alarm setting. When
Step End Alarm
is set to
“ON”, the buzzer will beep 4 times when each step is finished. It is useful to notify the
user the cooking step is finished. User can turn it off if no buzzer sound is wanted at the
finish of each step.
