ecodyst Hydrogen - Page 60

54 Accelerating the path to discovery
®
In PID mode, the controller keeps track of the initial
warm-heating up’s curve shape and reduces power to
the heater before the set point is reached, ensuring that
the solution achieves the set point with the least amount
of overshoot possible. [Note that the heater shuts o
intermittently before reaching the set point temperature.]
The second benet of PID mode is that it modies the
percentage of time the heater is on to exactly maintain
the specied setting. PID mode has the benet of
providing consistent temperature control with any heater,
including heat lamps and vacuum ovens. The downside is
that ON/OFF mode doesn’t require any tuning, whereas
the controller must be correctly tuned to the heater being
used. Instructions for switching the controller to ON/OFF
mode are provided below because both heating modes
have advantages (simplicity vs. precision) (though PID
mode will probably give better results 95% of the time).
The process described in Section 3.7 can be used to
return the controller to PID mode.
1.
Press and hold in both the

and

keys on the front of the temperature meter until the word “tunE” appears on the
display, then let go of the buttons.
2.
Press

until the word “CyC.t” appears in the display.
3.
While holding in the ‘*’ key, press the

key until the word “on.of” appears in the display. NOTE: if the display shows the
letter “A” when the ‘*’ keys is held in, press the

key until “on.of” is in the display, then let go of all the keys.
4.
Press the

key until the word “bAnd” appears in the display. While holding in the ‘*’ key, press the

key until the value
“0.1” appears in the display, then let go of all the keys.
5.
Press and hold in both the

and

keys on the front of the controller until the temperature is displayed, then release both
keys.
NOTE: Your controller has been congured to provide the operating capabilities and functionality required
by the system you ordered. While this information has been provided, it should be consumed simply for
informational purposes. Any requirement for technical tweaks should be directed to Ecodyst’s technical team
who would oer necessary advice and guidance before any technical changes are made to the controller.
Procedure
The procedures below can be used to switch the controller to ON/OFF mode. But by following the steps in Section
3.7, the controller may be returned to PID control. In addition, adhere to the instructions in Appendix, Section II to
completely reset the controller to factory settings.
High Powered Heating Mantle Controllers
!
Temp
Set
Point
Power
to heater
Off
On
Time
Temperature
of solution
PID Mode