Standard valve diagnostics on board

Frankfurt, (PresseBox) - SAMSON Series 3730 and 3731 Positioners now include all diagnostic features, which were only available at an extra charge, as standard. The on-board EXPERT+ firmware automatically records relevant data to monitor the valve and positioner. Required key parameters, for example to check the positioner attachment or to count valve cycles, are used to deliver predictive maintenance on the actual state of the valve. The diagnostics include an online hysteresis test that detects any changes in friction in the valve; deviations from the end position are also recorded. A data logger and histograms provide information to retrace the valve's operating conditions and performance. A partial stroke test can also be performed to check the functioning of on/off valves while they are in service. This test is particularly important for valves which remain in one position for a long time.

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