Description

3730-1 Electro-pneumatic Positioner | Samson

• • Manufacturer : SAMSON
  • Product no : 3730-1
  • Product type : Electropneumatic Positioner Series 3730
  • Set point : 4 to 20 mA
  • Travels : 3.75 to 200 mm
  • Opening angle : 24 to 100°
  • Travel Adjustable :
    • Direct attachment to Type 3277 Actuator 3.6 to 30 mm
    • Attachment according to IEC 60534-6 (NAMUR) 3.6 to 200 mm
    • Attachment to rotary actuators according to VDI/VDE 3845 24 to 100° opening angle

• • Travel range : Adjustable within the initialized travel/angle of rotation; 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
    • Split-range operation 4 to 11.9 mA and 12.1 to 20 mA
    • Static destruction limit 100 mA
• Minimum current : 3.7 mA
• Load impedance : =6 V (corresponding to 300 O at 20 mA)
• Housing : Die-cast aluminum EN AC-AlSi12(Fe) (EN AC-44300) acc. to DIN EN 1706, chromated and powder coated · Special version: stainless steel 1.4408
• External parts : Stainless steel 1.4404/316L
• Cable gland : M20 x 1.5, black polyamide
• Weight : 2.2 Kg

3730-1 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.

3730-1 Electro-pneumatic Positioner Features:

Simple attachment to all common linear and rotary actuators with interface for SAMSON direct attachment,
Any desired mounting position of the positioner
Simple single-knob, menu-driven operation
D easy to read in any mounted position due to selectable reading direction
Variable, automatic start-up
Preset parameters – only values deviating from the standard need to be adjusted
Calibrated travel sensor without gears susceptible to wear
Permanent storage of all parameters in EEPROM (protected against power failure)
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..,more
– Type 3730-1: electropneumatic positioner with on-site operation and LCD Additional options
– Inductive limit contact with proximity switches
– Stainless steel housing

Specification of 3730-1 Electro-pneumatic Positioner:

Direct attachment to Type 3277 Actuator 3.6 to 30 mm
Attachment according to IEC 60534-6 (NAMUR) 3.6 to 200 mm
Attachment to rotary actuators according to VDI/VDE 3845 24 to 100° opening angle
Travel range Adjustable within the initialized travel/angle of rotation; 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
Split-range operation 4 to 11.9 mA and 12.1 to 20 mA
Static destruction limit 100 mA
Minimum current 3.7 mA
Load impedance ≤6 V (corresponding to 300 Ω at 20 mA)
Supply air 1.4 to 7 bar (20 to 105 psi)
Air quality acc. to ISO 8573-1 (edition 2001-02)

Signal pressure (output) 0 bar up to the capacity of the supply pressure · Can be limited to approx. 2.4 bar over software
Characteristic Optionally, 3 characteristics for globe valves and 8 characteristics for rotary valves
Hysteresis ≤1 %
Sensitivity ≤0.1 %
Transit time <0.5 s for initialization not permissible · Adaptation over volume restriction Q
Direction of action Reversible
Air consumption Independent from supply pressure approx. 110 ln/h

For Complete datasheet: TSP Controls – Samson 3730-1 Datasheet – 2

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