The SP500 smart valve positioner is a loop powered device
that is able to drive linear and quarter turn pneumatic valves.
A 4-20 mA input signal determines the valve set point.
Precise control is maintained through valve position feedback
that automatically varies the pneumatic output pressure to
overcome the effects of stem friction and flow forces to maintain
desired valve position. Indication of valve position is provided
through a continuous digital display of % travel. Valve position
feedback is retrieved by means of a non contact technology based
on Hall effect. The pneumatics are based on piezovalve technology
- Therefore, high resolution, high reliability, vibration insensitivity
and extremely low air consumption is guaranteed at steady state.
The SP500 includes many smart functions that can be fully
programmed through menu driven software using an integral
keypad and LCD alphanumeric data. Valve commissioning is
simplified through an autostroke routine and LCD data of
programming status, software travel switch status, mA input signal
and valve diagnostics data. Moreover, the absence of mechanical
linkages between the valve stem and the positioner, drastically
simplifies and reduces the time required for the mounting
procedure. The SP500 is supplied with a NAMUR standard
mounting kit for attachment to yoke or pillar mounted actuators.
For quarter turn valves, a mounting kit compliant to VDI/VDE 3845
The SP500 smart valve positioner supports optional expansion to
include the HART® communication protocol, enabling complete
configuration using a PC or handheld device
This download includes all available size and material variations for the Spirax Sarco Electropneumatic Smart Positioner.