which characterizes the maximum loading condition to be tolerated the latter reference signal is established by a setpoint network 16 in which part of the supply voltage is adjustably tapped from a dropping resistance 17 and fed to the comparator input in opposing relation to the transducer output signals via lead 16a and through test connection 16b as is shown in fig2 the sensor or strain gage transducer output to circuitry 4 can undergo oscillations such as the transiently decaying oscillations characterized by the trace 17 which represents bridge output voltage versus time viewed in relation to a voltage level 18 which characterizes a signal developed by setpoint network 16 to establish a maximum or 100 safe loading reference it will be evident that the net signal may alternately be of one and another polarity with the result that comparator 13 would be switched alternately and the valve 10 would concomitantly disable and restore operation of the 34 tight 34 hydraulic powering of the load repeatedly such oscillations can be induced by rough handling of a near maximum load for example or by truck movements vibration or the like and the effects can tend to become hazardously regenerative under some conditions these consequences are plainly undesirable and such minor and short period oscillations should not be allowed to cause disabling of the load handling capabilities of the truck and cause.