SP400 Electropneumatic Intelligent Valve Positioner
The SP400 intelligent valve positioner is a device capable of controlling a linear or quarter-turn pneumatic servomotor and is powered via the control signal. A 4-20mA signal sets the valve position. The accuracy of the valve position is maintained by providing feedback on the valve position. The pneumatic output signal is adjusted to compensate for valve stem friction or flow forces on the valve. The valve position is displayed on a digital display as a percentage of the total lift height. The position of the valve is measured with a non-mechanical coupling based on the HALL effect.
The pneumatic part is based on the piezo valve technique. This ensures high resolution, reliability, insensitivity to vibrations, and extremely low compressed air consumption in a stable state.
The SP400 includes many intelligent features, all of which can be programmed using the software configuration menu and by using the integrated keyboard and alphanumeric data on the LCD display. Due to the absence of a mechanical transmission between the valve stem and the valve positioner, the assembly of the SP400 is drastically simplified, reducing assembly time significantly. The software is kept as simple as possible, so commissioning an SP400 involves nothing more than assembly and pressing a single button.
The SP400 comes with a mounting kit according to the NAMUR standard for mounting on a bracket or pillar. For quarter-turn valve positioners, a mounting kit is included in accordance with VDI/VDE 3845.
Compressed Air Supply:
The SP400 intelligent valve positioner must be supplied with high-quality compressed air. A compressed air pressure regulator with coalescing filter or equivalent must be used.
Application:
The SP400 can be used on the following servomotors:
Series PN1000 and PN2000
- Series PNS3000 and PNS4000
- Series PN9000
Options:
Manifold Block: Complete manifold with 2 pressure gauges (compressed air supply and compressed air pressure to the servomotor)
