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Samson Control Valve Positioner Type 3731-3 3730-2 3730-3 3730-4 3730-5 Digital Electropneumatic Positioners
The positioner ensures a predetermined assignment of the valve position (controlled variable x) to the input signal (set point w). It compares the input signal received from a control system to the travel or rotational angle of the control valve and issues a corresponding output signal pressure (output variable y).
Special features
Electropneumatic positioner with HART® communication
Attachment to linear actuators according to IEC 60534-6, VDI/VDE 3847, or SAMSON integral attachment
Attachment to rotary actuators according to VDI/VDE 3845
Attachment to double-acting actuators with Type 3710 Reversing Amplifier
Integrated EXPERTplus diagnostics for control valves
Any desired mounting position of the positioner (but not suspended)
Simple one-knob, menu-driven operation
Easy-to-read display in any mounting position thanks to rotatable reading direction
Configurable with a computer over the SSP interface using the TROVIS-VIEW software
Variable automatic start-up thanks to four different initialization modes
Preset parameters, only values deviating from the standard need to be adjusted
Calibrated travel sensor without gears susceptible to wear
Sub (substitution) initialization mode allows the positioner to be started up in case of emergency whilst the plant is running without having to change the valve position.
All parameters saved in non-volatile EEPROM
Two-wire system with small electrical load of 410 Ω
Adjustable output pressure limitation
Adjustable tight-closing function
Automatic zero monitoring
Integrated temperature sensor and operating hours counter
Two standard programmable position alarms
Self-diagnostics
Messages as condensed state conforming to NAMUR Recommendation NE 107, issued over a fault alarm contact or optional analog position transmitter
DTM file available for integration into FDT frame applications according to specification 1.2
Mengchuan Instrument Co., Ltd. is located in Liushi Town, Yueqing City, Wenzhou, Zhejiang Province, surrounded by the beautiful world natural and cultural heritage - Yandang Mountain! It is mainly engaged in 2000 differential pressure gauge, red oil differential pressure gauge, pressure differential... Mengchuan Instrument Co., Ltd. is located in Liushi Town, Yueqing City, Wenzhou, Zhejiang Province, surrounded by the beautiful world natural and cultural heritage - Yandang Mountain! It is mainly engaged in 2000 differential pressure gauge, red oil differential pressure gauge, pressure differential...
