Technical Data - Samson 3730-2 Mounting And Operating Instructions

3.3 Technical data

Type 3730-2 Positioner
Valve travel Adjustable
Travel
Adjustable
range
Signal range
Set point w
Static destruction
limit
Minimum current
Load impedance
Supply air
Supply air
Air quality acc. to
ISO 8573-1
Signal pressure (output)
Adjustable
Character-
istic
Deviation
Hysteresis
Sensitivity
Transit time
Direction of action
Air consumption, steady state
To fill actuator with
Air output
air
capacity
To vent actuator
Permissible ambient temperature
EB 8384-2 EN
The technical data for the explosion-protected devices may be restricted by the
limits specified in the test certificates.
Direct attachment to Type 3277 Actuator
Attachment according to IEC 60534-6 (NAMUR) 3.6 to 300 mm
Attachment according to VDI/VDE 3847
Attachment to rotary actuators (VDI/VDE 3845)
Adjustable within the initialized travel/angle of rotation of the valve; travel can be
restricted to 1/5 at the maximum.
4 to 20 mA · Two-wire device, reverse polarity protection · Minimum span 4 mA
100 mA
3.6 mA for display · 3.8 mA for operation
Without explosion protection: ≤6 V (corresponding to 300 Ω at 20 mA)
Explosion protection: ≤7 V (corresponding to 350 Ω at 20 mA)
1.4 to 7 bar (20 to 105 psi)
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
0 bar up to the supply pressure · Can be limited to 1.4 bar/2.4 bar/3.7 bar
± 0.2 bar by software
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
≤1 %
≤0.3 %
≤0.1 %
Venting or filling with air adjustable separately up to 240 s by software
Reversible
Independent of supply air approx. 110 l
At Δp = 6 bar: 8.5 m ³/h · At Δp = 1.4 bar: 3.0 m
n
At Δp = 6 bar: 14.0 m ³/h · At Δp = 1.4 bar: 4.5 m
n
–20 to +80 °C All versions
–45 to +80 °C With metal cable gland
–25 to +80 °C With inductive limit switch (SJ2-S1N) and metal cable gland
The temperature limits for the explosion-protected devices may be restricted by
the limits specified in the test certificates.
Design and principle of operation
3.6 to 30 mm
3.6 to 300 mm
24 to 100° opening angle
/h
n
³/h · K
n
³/h · K
n Vmax (20 °C)
= 0.09
Vmax(20 °C)
= 0.15
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