Uses the temperature dependence pressure detection switch and its pressure detection switch the liquid pressure control system

摘要

PURPOSE:To change switch change-over setting pressure in connection with a temperature change by changing spring force which sets up the switch change- over setting pressure related to the ON-OFF change-over working, in connection with a temperature change. CONSTITUTION:When pressure liquid introduced into a pressure liquid lead-in port 8 reaches prescribed pressure of the bigness to overcome the spring force of a gas spring 9, a piston 10 moves against the spring force to transfer a pusher 11 in the same direction. The transfer of this pusher turns a constantly closed switch part OFF. When the peripheral temperature rises, gas G of a closed container 9a expands in accordance with its rise so that the pressure inside the closed container 9a rises to increase the spring force of the gas spring 9 in accordance with temperature rise and as a result to increase also the switch change-over setting pressure of a pressure detection switch 7. Depending on peripheral temperature, switch change-over setting pressure, therefore, can be changed.