Centrifuge nitrogen pressure maintenance standard

Open the nitrogen inlet valve before starting to ensure that the pressure is not lower than 20KPa. The automatic state analyzer can set the upper and lower limits. Upper limit value: In the automatic state, when the measured display value is greater than this value, the solenoid valve will be opened for nitrogen filling. Upper limit and lower limit: in the automatic state, when the measured display value is greater than this value, the centrifuge will brake and stop, and the electromagnetic generator will be turned off. First, set the upper limit value and the upper limit value (the upper limit value is greater than the upper limit value) according to the process requirements, and put the power switch "SA 1" in the open position, then put "SA2" in the automatic position and SA3 in the low speed position. When the measured signal is lower than the upper limit value, the controller will perform Logue control. When the permission signal is issued, the concentration indicator will light up, and then press "SB 1" to start. During operation, when the concentration exceeds the upper limit, the solenoid valve will automatically open to charge the atmosphere, and send out acousto-optic rectification to remind the operator to pay attention until the concentration is lower than the upper limit. If the measured display value continues to rise until it is higher than the upper limit, the controller sends a signal to drive the frequency converter to brake and stop to ensure safety.