ASP-FD AC Current Operated Switch ASP-FD Series sensors allow two separate trip points to detect overcurrent and undercurrent conditions. The sensor outputs are dual, single-pole, double-throw relays, so they can control either AC or DC circuits and provide an alarm if the monitored circuit draws too little or too much current. One sensor means less…

As much as we tend to assume that all control systems in the 21st century use programmable logic controllers, DCS or PC based logic, that is overly optimistic. There are countless machines and processes controlled with relays and panel mounted indicators, and while the control industry seems to want all devices to be connected to…