Patent ID: 6053193
Filing Date: 2000-04-25
Classification: F16K,Y10T

Abstract:
A cycling, self checking parameter monitoring system comprising;a parameter sensing switch with parameter value set point, said parameter sensing switch being connected to a system to be monitored, whereby the parameter in the system is sensed by said parameter sensing switch,means to alter the value of the parameter applied to said parameter sensing switch without significantly altering the value of the parameter in the system to be monitored, whereby said parameter value set point is reached, said means to alter being triggered by said parameter sensing switch not having reached said parameter value set point,means to terminate the application of said means to alter, said means to terminate being triggered by said parameter sensing switch having reached said parameter value set point, whereby said parameter sensing switch returns to sensing the parameter in the system to be monitored, which in turn again triggers said means to alter the value of the parameter, provided the value of the parameter in the system to be monitored has not reached said set point, andmeans to recognize and monitor irregularities in the cycle created by the operation of said means to alter the value of the parameter and said means to terminate.