Trip amplifiers are a common part of safety systems in e.g. the maritime industry in which supervision of e.g. oil-fired steam boilers. Thus, the trip amplifiers observe the process, control the pumps and burner due to water level and steam pressure and sound the alarm at e.g. an inappropriate high or low water level. Naturally, boiler control is a safety question, and thus, the trip amplifiers must be very reliable and precise.