SPrn
SetPoint Ramp Run. Allowable Values: ON, OFF, Hold
This parameter turns the Ramp-to-Setpoint feature ON or OFF. During an active run, if this parameter is
set to ‘Hold’, the setpoint ramp stops and holds at its’ current value. This continues until the parameter is
set to ON or OFF. When set to OFF, the values in SetPoint Ramp Rate and Soak Time are ignored.
SoAK
Soak Time. Allowable Values: “- -”, 0 to 1440 min.
This specifies the amount of time to soak at the setpoint after the setpoint temperature ramp is complete.
A setting of “- -” causes the controller to remain at the final setpoint indefinitely. A numeric value causes
the controller to stay at the setpoint for the entered time and then turn power to the heater off after the
time expires.
Important Points to Know
1.
While the Ramp-to-Setpoint feature in activated, the display alternates between the current reaction
temperature and the word “
SPr
” to indicate that a “SetPoint Ramp” is active.
2.
Setting a ramp rate doesn’t guarantee that the reaction temperature is at the specified ramp
temperature since heating is dependent on the power of the heater. For example, if a ramp rate of
1200 deg/Hr (i.e., 20 deg/min) is set, unless the heater is powerful enough to impart heat at such a
high rate, the reaction temperature will not track the ramp temperature. Likewise, a reaction can’t
cool faster than natural cooling by ambient air.
3.
Once the Ramp-to-Setpoint feature is activated in programming mode, it remains on until it’s
deactivated in programming mode. The Ramp-to-Setpoint feature remains activated even if power is
turned off to the controller.
Activating & Programming the Ramp-to-Setpoint Feature
1.
Press and hold in both the
and
keys on the front of the temperature meter until the word “
▼
▲
tunE
” appears in the
display, then release both keys.
2.
Press the
key (8 times) until the word “
▲
SPrr
” appears in the display.
This is were you set the ramp rate in units of degrees/hour. First hold in the ‘*’ key, then while holding in the *’ key
press the
or
key until the desired ramp rate appears in the display, then let go of all the keys. Units are in
▼
▲
degrees/hour.
3.
Press the
key once and the word “
▲
SPrn
” will appear in the display.
This function turns the ramping feature ON, OFF, or to Hold. First hold in the ‘*’ key, then while holding in the *’ key
press the
or
key until the desired setting appears in the display, then let go of all the keys.
▼
▲
4.
Press the
key once and the word “
▲
SoaK
” will appear in the display.
This is where the soak time is set in units of Minutes. A soak time of ‘ -- ‘ means to ‘soak forever’ (this setting is one
below ‘0’). First hold in the ‘*’ key, then while holding in the *’ key press the
or
key until the desired time
▼
▲
appears in the display, then let go of all the keys. If a soak time is set, the controller display will alternate between
showing the current reaction temperature and the word “
StoP
” when the soak time has expired to indicate that power
has been turned off.
5.
To exit programming mode, press and hold in both the
and
keys until the temperature appears in the display, then
▼
▲
release both keys.
Deactivating the Ramp-to-Setpoint Feature
1.
Press and hold in both the
and
keys on the front of the temperature meter until the word “
▼
▲
tunE
” appears in the
display, then release both keys.
2.
Press the
key (9 times) until the word “
▲
SPrn
” appears in the display.
This function turns the ramping feature ON and OFF. First hold in the ‘*’ key, then while holding in the *’ key press
the
or
key until OFF appears in the display, then let go of all the keys.
▼
▲
3.
To exit programming mode, press and hold in both the
and
keys until the temperature appears in the display, then
▼
▲
release both keys.
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