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Section 7
Integra 3™ Temperature Control
34
Research Instruments Ltd
7
Setting the Temperature
The setpoint temperature of each heating system can be modified by
pressing the icons mentioned on page 32, which are located on the
main screen. The value is modified by pressing the Increase or Decrease
icons. Once the correct value is obtained, press the
Save
icon to return
to the main screen.
When using the Heated Stage Plate only with an externally controlled
heating/cooling insert (Mode 5), an additional option on the setpoint
screen enables the Heated Stage Plate to be switched off. In this case the
display will show ‘HEATING OFF’ when on the main screen.
Note: It may take up to 20 minutes for the temperature to stabilise. In all
cases an alarm will sound if the setpoint temperatures are not reached.
Refer to the Alarm and System Status section for a full description of alarms.
Adjusting Specimen (Setpoint) Temperature
The heating systems are factory calibrated such that when the controller
is set to 37°C the surface temperature of the heated plate(s) and air
expelled from the Air Heating System (if fitted) measures 37°C. For all
heating systems the setpoint temperature is adjustable to between 30°C
and 45°C.
The temperature inside a Petri dish will normally be slightly lower than
the heated surface, depending on ambient conditions, type of Petri
dish and the sample preparation. After the system has been installed
in its operating location, the temperature of the heated plate(s) and
Thermosafe Air Heating System (if fitted) should be adjusted to allow for
this difference.
Change the setpoint if the temperature in the Petri dish needs to be
changed. For example, the heated plate might need to be set to 41°C in
order for the specimen to be at 37°C.
Prepare a Petri dish with water and paraffin oil that mimics your normal
Petri dish preparation and place it on the heated stage in its normal
position.
Do not adjust the temperature with a specimen in place on the
heated surface.