Type 37301 Electropneumatic Positioner（37301型电动气动定位器）.pdf

Series 3730 Type 3730-1 Electropneumatic Positioner Application Single-acting or double-acting positioner for attachment to pneumatic control valves. Self-calibrating, automatic adapta- tion to valve and actuator. Set point 4 to 20 mA Travels 3.75 to 200 mm Opening angle 24 to 100° 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 • Simple attachment to all common linear and rotary actua- Direct attachment to tors with interface for SAMSON direct attachment, Type 3277 Pneumatic Actuator (new design) NAMUR rib or valves with rod-type yokes according to IEC 60534-6-1, or to rotary actuators according to VDI/ VDE 3845 • Any desired mounting position of the positioner • Simple single-knob, menu-driven operation • LCD easy to read in any mounted position due to select- able reading direction • Variable, automatic start-up • Preset parameters - only values deviating from the stan- dard need to be adjusted • Calibrated travel sensor without gears susceptible to wear • Permanent storage of all parameters in EEPROM (protected Attachment to against power failure) NAMUR rib • Two-wire system with a small electrical load of 300 Ω • Tight-closing function can be activated • Continuous monitoring of zero point • Two standard programmable position alarms Version –