Page 19 of 22
ITS-90 Isothermal Towers Iss.07 – 05/14
The Setpoint ramp rate operates when the bath is heating and cooling.
Instrument Address
The controller has a configurable "address" which is used for PC communications. Each instrument has an address;
this allows several instruments to be connected in parallel on the same communications bus. The default value is 1.
This address would only need to be changed if more than one Dry Block is connected to the same PC port.
To check the Address value press the scroll key until the lower display indicates,
ADDR
The upper display will show the current value that can be modified with the UP and DOWN keys.
Monitoring the Controller Status
A row of beacons indicate the controllers status as follows,
Output 1 (op1)
Heater – shows when the heater is active, seen to pulse to display heater output
REM
This beacon indicates activity on the PC interface
Units
The units can be changed from °C. Press the scroll key until the lower displays shows
UNITS
Use the UP and DOWN keys to select the desired display unit.
Using the zone controller
The zone controller is set to read the temperature difference between the heat siphon temperature and the
immersion compensator. Typically if there was no difference in the temperature then the controller would read “0”.
If the immersion compensator was cold by 1°C then the zone controller would be set to +1°C etc.
To adjust the controller temperature simply use the up/down buttons.
