ABOUT THE ANDOR iKon-L
iKon-L SECTION 1
Page 26
1.7.6.2 - Water cooling
A flow of water through the heat sink removes heat very efficiently, since the heat sink is never more than 1ºC
hotter than the water. With this type of cooling, the minimum temperature of the CCD will be dependent only on
the water temperature,
not
The table below is a guide to the minimum CCD operating te
mperatures for various water temperatures.
Performance of individual systems will vary slightly.
on the room temperature. For detailed performance figures please refer to table 2
below. Water cooling, either chilled though a refrigeration process or re-circulated (i.e. water which has been
forced air cooled then pumped) allows lower minimum operating temperatures than air cooling. IMPORTANT
NOTE: SEE INFORMATION ON CONDENSATION BELOW.
Table 1: Evacuated housing - High performance water cooling with Power Supply Unit
WATER TEMPERATURE CCD TEMPERATURE
10°C -100°C
15°C -97°C
20°C -95°C
25°C -92°C
1.7.6.3 - Condensation
NEVER USE WATER THAT HAS BEEN CHILLED BELOW THE DEW POINT OF THE AMBIENT
ENVIRONMENT TO COOL THE DETECTOR. You may see condensation on the outside of the detector body if
the cooling water is at too low a temperature or if the water flow is too great. The first signs of condensation will
usually be visible around the connectors where the water tubes are attached. If this occurs carry out the
following actions:
1. Switch off the system
2. Wipe the detector head with a soft, dry cloth. NOTE: It is likely there will already be condensation
on the cooling block and cooling fins inside the detector head.
3. Set the detector head aside to dry for several hours before you attempt reuse.
4. Before reuse blow dry gas through the cooling slits on the side of the detector head to remove any
residual moisture.
5. Use warmer water or reduce the flow of water when you start using the device again. However this is
not an issue when using a Recirculator which eliminates the dew point problem.
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