LAR Process Analysers QuickTOC ultra - Cooling and Emergency Cooling

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12E5119 Instruction Manual QuickTOC

ultra

IECEx 31

3 Product

3.7 Cooling and Emergency Cooling

LAR | PROCESS ANALYSERS AG

Fig. 18: Components of the overpressure system

3.7 Cooling and Emergency Cooling

The analyser is equipped with a a heatpipe (3) in order to keep the inner temperature of the casing within

acceptable limits for the control logic - despite the high temperature of the furnace. Deflectors (4) within

the heatpipe transport the hot air out of the casing. The heatpipe is filled with a liquid and uses the phy-

sical effect of of evaporation and condensation. These two processes generate a high output of enegry.

The liquid evaporates on the hot side of the heatpipe, and condensates on the cool side. Thanks to ca-

pillary force, the condensation then returns to the hotter area in the heatpipe.

Fig. 19: The correct functioning of the heatpipe is guaranteed by two ventilators (1, 5). The ventilator (1)

is located in the explosive area. This ventilator is set up for temperature class T4, allows for continuous

operation and has protection class IP55.