Diagnostics are Now Standard for These Valve Positioners

This firm’s Series 3730 and 3731 positioners now include all diagnostic features as standard; previously, these features were only available at a extra cost. The onboard Expert⁺ firmware automatically records relevant data to monitor the valve and positioner. Required key parameters, such as for checking the positioner attachment or for counting valve cycles, are used to deliver predictive maintenance on the actual state of the valve. Diagnostics include online hysteresis tests, which detect any changes in friction in the valve; derivations from the end position are also recorded. A data logger and histograms track the valve’s operating conditions and performance. Partial stroke testing can also be performed. — Samson AG, Frankfurt, Germany