Samson TROVIS 3730-1, Перевод оригинальной инструкции

Страница: 23 / 144

EB 8484-1 EN 3-5
Design and principle of operation
3.4 Technical data
Table 3-1: TROVIS 3730-1 Electropneumatic Positioner
Travel
Adjustable travel for
Direct attachment to Type 3277: 3.5 to 30 mm
Attachment according to IEC 60534-6 (NAMUR): 3.5 to 300 mm
Attachment according to VDI/VDE 3847 3.5 to 300 mm
Attachment to rotary actuators: 24 to 100°
Travel range 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
Split-range operation: 4 to 11.9 mA and 12.1 to 20 mA
Static destruction limit ±33 V
Minimum current 3.6 mA for display · 3.8 mA for operation
Load impedance No explosion protection: ≤6.6 V (corresponding to 330 Ω at 20 mA)
Explosion protection: ≤7.3 V (corresponding to 365 Ω at 20 mA)
Supply air
Supply air 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 supply pressure · Can be limited to 2.4 bar ±0.2 bar by
software
Hysteresis ≤0.3 %
Sensitivity ≤0.1 %
Characteristic Linear/equal percentage/reverse equal percentage/SAMSON butterfly
valve/VETEC rotary plug valve/segmented ball valve
Direction of action Reversible
Air consumption, steady
state
Independent of supply air approx. 65 l
n
/h
Air output capacity (when ∆p = 6 bar)
Actuator (supply) 8.5 m
n
³/h · At Δp = 1.4 bar: 3.0 m
n
³/h · K
Vmax(20 °C)
= 0.09
Actuator (exhaust) 14.0 m
n
³/h · At Δp = 1.4 bar: 4.5 m
n
³/h · K
Vmax(20 °C)
= 0.15