The working process of the cold water machine, cooler cooling water through cooling circulation pump into the cooling tower, continue into the cold water after cooling machine for cooling cycle.
With the continuous running of chillers, cooling water temperature rising.
The cooling tower and cooling fan with direct startup mode must be turned on and off under artificial control state.
Current control method of defects of existing technology in the spring and autumn season, the outdoor temperature change is big.
Cooling water temperature is higher than the set of cooling water temperature is seen.
Might cause appear alarm outage, cold water machine affect the cold water machine work normally or water temperature below the set value.
cooling tower cold water machine automatic temperature control device including water temperature induced thermocouple and feedback the thermostat, the cooling tower is at the tank outlet water temperature thermocouple sensor, located in the cooling tower wall installation device.
Temperature controller installed in the power supply into line in the feature is that the water temperature of cooling tower installation induced thermocouple through feedback after the water temperature of the thermostat, controlled by a thermostat motor starter relay to control the opening and closing of the machine.
Described the water temperature of induction heating with PT100 platinum resistance materials.
The thermostat adopts XMTE200 temperature controller.
Thermocouple and temperature controller is used to connect the line between shielding thermocouple wiring.
the cooling tower cold water machine automatic temperature control device has the following advantages:
first, easy to control in the spring and autumn season before requires human to realize the cooling tower fan start and stop.
After adopting automatic, cooling tower fan signal can be transmitted water temperature sensor thermocouple, temperature controller by feedback control cooling fan start and stop.
Without the need of human according to the cooling water temperature control fan, stop, greatly reduce the labor intensity to improve control accuracy.
2, start-stop relatively flat fan feedback closed start switch of temperature controller, the time delay relay start, after completion of the timing.
Delay contact closure, the fan starts.
This can make the fan starts relatively stable and can prevent the fan frequent start to stop.
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