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
- SAM DIGITAL READY
- Die-cast aluminum or stainless steel housing
- 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
| item | value |
| Warranty | 1 year |
| Customized support | OEM, ODM |
| Place of Origin | Germany |
| Brand Name | SAMSON |
| Model Number | 3730-3 Series |
| Type | Positioner |
| Set point | 4 to 20 mA |
| Valve travel | 3.6 to 300 mm |
| Opening angle | 24 to 100° |
| Display | LCD |
| Signal range | 4 to 20 mA |
| Minimum current | 3.6 mA |
| Supply pressure | 1.4 to 7 bar (20 to 105 psi) |
| Hysteresis | ≤0.3 % |
| Degree of protection | IP 66/NEMA 4X |
Accessories
Options
- Device compatible with paint
- Additional equipment: inductive limit contact, solenoid valve, analog position transmitter, external position sensor, leakage sensor, binary input
