Alfa Laval Unique RV-ST, Instruction Manual

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6 Technical data
It is important to observe the technical data during installation, operation and maintenance.
Inform personnel about the technical data.
6.1 Technical data positioner
Material:
Body PPS, Stainless Steel
Cover PC
Sealing
EPDM
Power supply 24 VDC +/- 10%
Ripple 10%, no technical direct current
Setpoint setting
4 to 20 mA
Output resistance 180
Ω
Control medium: Neutral gases, air DIN ISO 8573-1
Dust concentration Class 5 (<40µm particle size)
Particle density Class 5 (<10mg/m
3
)
Pressure condensation point Class 3 (<-20°C)
Oil concentration Class 5 (<25mg/m
3
)
Ambient temperature
0 to +60 ° C
Pilot air ports Push-in connector (external ø6 mm or 1/4") or threaded ports G1/8
Supply pressure Low air flow rate 5 to 7 bar
1)
Air input filter Exchangeable (mesh aperture
~
0.1mm)
Position detection module
Contact-free, wear-free
Stroke range valve spindle 3 to 28 mm
Installation As required, preferably with actuator in upright position
Protection class IP 65/67 according to EN 60529 (NEMA4x in preparation)
Power consumption < 3.5 W
Electrical connection:
Cable gland (in preparation) 1xM16x1.5 (cable-ø5-10mm), terminal screws (1.5 mm
2
)
Protection class 3 according to VDE 0580
Conformity CE acc. to EMC 2004/108/EC
1) The supply pressure has to be 0.5 - 1 bar above the minimum required pilot pressure for the valve actuator.
6.2 Technical data - valve/actuator
Data - valve/actuator
Max. product pressure 10 bar (1000 kPa) (145 psi)
Min. product pressure Full vacuum (depending on product specifications)
Temperature range -10
°
C to + 140
°
C (standard EPDM seal)
Air pressure, actuator 5 to 7 bar (500 to 700 kPa) (72.5 to 101.5 psi)
Materials - valve/actuator
Product wetted steel parts
AISI 316L (internal Ra < 0.8)
Other steel parts AISI 304
Product wetted seals
EPDM (standard)
Optional product wetted seals
HNBR and FPM
Other seals
NBR
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