J-KEM Scientific Gemini-230, Руководство пользователя

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4. Enter the temperature that you want to heat the reaction to (i.e., the Setpoint) into the digital meter.
To enter the setpoint temperature (i.e., the
temperature to heat to) into the controller:
1. Hold in the Star button on the face of the
digital meter.
2. While holding in the Star button, press the Up
arrow to increase, and the Down arrow to
decrease the setpoint temperature.
Star button
Up (to increase) and
Down (to decrease) arrows
When the desired setpoint temperature is showing in the display, release the star button to load the
setpoint. When no buttons are pressed on the controller, the controller shows the temperature
sensed by the thermocouple. When the Star button is pressed, the setpoint appears as a blinking
number.
5.
Set the correct Power Control Level. Your J-KEM controller has a built in Power Control Computer
PCC) that precisely regulates power to the heater. For the computer to work correctly, it must know
the volume of solution that is being heated. It’s important to understand that the PCC is set to the
Volume of solution being heated, not the size of the heater or the size of the flask.
15 ml of solution in a 100 ml flask 75 ml of solution in a 100 ml flask
If the flask above is placed in a
100 ml heating mantle, the
power control input should be
set to the “10-100 ml” setting. The power control computer is
always set to the
Volume of
solution being heated, not the
size of the flask or heater.
If the flask above is placed in a
100 ml heating mantle, the
power control input should be
set to the “50-500 ml” setting.
When the power control computer is
set to the correct power level, your
controller can regulate virtually any
heater to +-0.1
o
C with less than 1
o
C
overshoot on initial warming.
For a detailed explanation of the Power Control Computer, see Section Two in the controller’s
User manual.