New Self-diagnostic Valve Position Monitor

The new Type 3738 Electronic Valve Position Monitor by Samson (Germany) can be used on on/off valves in all fields of application. It indicates the end positions and controls the actuators.

Thanks to its contactless, magnetoresistive sensor system and an integrated microprocessor, the valve position monitor can be configured at the push of a button. The first device of its kind works with a NAMUR signal in compliance with IEC 60947-5-6 and is powered by a two-wire supply. As a result, the valve position monitor can replace solenoid valves and limit switches without having to change the wiring or signal levels. At the same time, it includes functions like self-tuning and diagnostics, which opens up a wide range of opportunities for control and asset management. The supply air for the actuator is routed through bores at the bottom of the housing, making additional tubing unnecessary. The valve position monitor is thus suitable for integrated attachment, which facilitates mounting and guarantees exceptional ruggedness. The contactless position sensor makes adjustments as well as moving levers redundant. The Type 3738 Valve Position Monitor will be presented for the first time at the forthcoming ACHEMA trade fair in May 2009.