Description

3730-2 Electro-pneumatic Positioner | Samson

• OPERATION: Linear or rotary
• TRAVEL / ROTATION: 3.6 to 300mm / 24 to 100°
• DISPLAY: Alphanumeric LCD
• COMMUNICATION PROTOCOL: HART
• PERMISSIBLE AMBIENT TEMPERATURE: –45 to +80 °C
• EXPLOSION PROTECTION: without, Ex ia, Ex nA
• FEATURES: Auto calibration & tuning, diagnostics, position transmitter, solenoid
• Manufacturer: Samson
• Origin: Germany
• Weight :  Approx 2 Kgs

3730-2 Electro-pneumatic 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)

3730 electro-pneumatic positioner series is designed to work with general industrial applications. This positioner series includes several model versions to meet any end user or process requirements.

3730-2 Electro-pneumatic Positioner Features:

Simple single-knob, menu-driven operation
LCD easy to read in any mounted position due to selectable reading direction
Configurable with a PC over the SSP interface using the TROVIS-VIEW software
Variable, automatic start-up with 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 initialization mode (substitution) allows the positioner to be started up in case of emergency whilst the plant is running without the valve moving through the whole travel range..more
Permanent storage of all parameters in EEPROM (protected against power failure)
Two-wire system with a small electrical load of 410 Ω
Adjustable output pressure limitation

Specification of 3730-2 Electro-pneumatic Positioner:

Attachment according to IEC 60534-6 (NAMUR) 3.6 to 300 mm
Attachment according to VDI/VDE 3847 3.6 to 300 mm
Travel range Adjustable Adjustable within the initialized travel/angle of rotation of the valve; travel can be restricted to 1/5 at the maximum.
Set point w Signal range 4 to 20 mA · Two-wire device, reverse polarity protection Minimum span 4 mA
Static destruction limit 100 mA
Minimum current 3.6 mA for display · 3.8 mA for operation Attachment to rotary actuators (VDI/VDE 3845) 24 to 100° opening angleLoad impedance ≤ 8.2 V (corresponds to 410 Ω at 20 mA)

Supply air
Supply pressure 1.4 to 7 bar (20 to 105 psi)
Air quality acc. to ISO 8573-1
Max. particle size and density: Class 4 · Oil content: Class 3 · Pressure dew point: Class 3 or at least 10
K below the lowest ambient temperature to be expected
Signal pressure (output) 0 bar up to the capacity of the supply pressure · Can be limited to 1.4 bar/2.4 bar/3.7 bar ± 0.2 bar by software
Characteristic Adjustable
Linear/equal percentage/reverse equal percentage
User-defined (over operating software and communication)
Butterfly valve, rotary plug valve and segmented ball valve: linear/equal percentage
Deviation ≤1 %
Hysteresis ≤0.3 %
Sensitivity ≤0.1 %

For Complete datasheet: TSP Controls – Samson 3730-2 Datasheet22

Request Quote