The temperature of hydraulic fluid in hydraulic installations can either be measured using simple measuring devices (thermometers) or else by means of a measuring device which sends signals to the control section. Temperature measurement is of special significance since high temperatures (> 60 degrees) lead to premature ageing of the hydraulic fluid. In addition, the viscosity changes in accordance with the temperature.
The measuring devices may be installed in the hydraulic fluid reservoir. o keep the temperature constant, a pilotherm or thermostat is used which switches the cooling or heating system on as required.
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