7
For safety reasons in such an event the slots will be deactivated, for example to to prevent overheating of the aquarium.
Despite this safety measure, it is still advisable to only use submersion tube heaters with integrated thermostat and
safety cut-out function.
3. Description of the programmable functions
Slot 1 can be programmed for pH control or temperature control . Slot 2 can be programmed for (second) temperature
control or timer switch . This allows eight different combinations when using the Dupla Twin-Control for one or two
different aquaria .
• pH regu water heating (slot 1: pH / slot 2: Temp
2
HEAT)
• pH regu water cooling (slot 1: pH / slot 2: Temp
2
COOL)
• pH regu timer switch (slot 1: pH / slot 2: Time)
• water h substrate heating (slot 1: Temp
1
HEAT / slot 2: Temp
2
HEAT)
• water h water cooling (slot 1: Temp
1
HEAT / slot 2: Temp
2
COOL)
• water h timer switch (slot 1: Temp
1
HEAT / slot 2: Time)
• water c timer switch (slot 1: Temp
1
COOL / slot 2: Time)
• water c water cooling (slot 1: Temp
1
COOL / slot 2: Temp
2
COOL)
In programming mode, the functions can be configured in the following sequence:
3.1 Clock programming
3.1.1 Time setting
The factory presets the time at
. The time setting however is not cleared during a resetting procedure .
3.2 Temperature 1 programming
3.2.1 Choice of HEAT/COOL
A convenient inversion function makes it possible to switch from HEAT to COOL . This permits connection to an
external cooling device instead of a heater to counteract any increase in temperature .
3.2.2 Setting the temperature 1 value
The temperature is regulated to a precision of 0 .1 °C . The temperature can be set within the range of 10 °C – 40 °C .
The factory presets the temperature to 24 °C . It is possible to programme two turn-on/turn-off times to simulate the
drop in temperature at night . The Dupla Twin-Control pro has an automatic sorting function which will re-arrange the
time periods to the correct sequential order when exiting programming mode .
3.2.3 Alarm setting temperature 1
A visual alarm indicated by flashing if the temperature exceeds or drops below the programmed desired tempe-
rature 1 values . The factory setting is 0 .0 (no alarm) . An alarm window b/- 0 .1 °C and 10 °C can be set .
Example: Temperature 24 °C, alarm /- 2 °C means that an alarm is triggered below 22 °C and above 26 °C .
