FEATURES
Easy to operate, menu-driven with graphical LCD
Multilingual full text display, backlit for easy reading
All parameters can be configured locally by push buttons
Status and diagnostic messages displayed in LCD
Advanced diagnostics for valve predictive maintenance
Premium diagnostics for valve signatures, online friction
Suitable for safety applications up to SIL 3
Partial stroke test (PST) for emergency shutdown applications
HART Protocol with only 420 Ohms load
PROFIBUS-PA acc. to IEC 1158-2 based on FISCO
FOUNDATION Fieldbus H1 acc. to IEC 1158-2 based on FISCO with PID, AO, 2xDI, DO function blocks and LAS functionality
Infrared interface for wireless communication
Easy mounting to all linear and rotary actuators
The SRD991 also has the capability to control a Partial Stroke Test (PST) that offers operators a tool to identify the trouble-free function of ESD (Emergency Shut Down) valves.
OPTIONS
Stainless steel housing
Limit switches or position transmitter
Gauge manifolds and volume boosters
Pressure sensors for supply air and outputs
