Technical Data - Samson 3730-3 Mounting And Operating Instructions

3.7 Technical data

Table 12: Type 3730-3 Electropneumatic Positioner
Type 3730-3 Positioner
Valve
Adjustable
travel
Travel
Adjustable
range
Signal range
Set point
Static destruction
w
limit
Minimum current
Load impedance
Supply air
Supply air
Air quality acc. to
ISO 8573-1
Signal pressure (output)
Adjustable
Charac-
teristic
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 8384-3 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)
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
≤ 8.2 V (corresponds to 410 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 percent-
age
≤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
–55 to +80 °C Special version for low temperatures with metal cable gland
(Type 3730-3xxxxxxxx0x02x0xx)
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
3.6 to 300 mm
24 to 100° opening angle
/h
n
³/h · K
n Vmax(20 °C)
³/h · K
n Vmax (20 °C)
= 0.09
= 0.15
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