SRI990 ANALOG POSITIONER FOXBORO ECKARDT
The analog Positioner SRI990 with analog input 4 to 20 mA is designed to operate pneumatic valve actuators. It offers an easy adjustment by means of switches and potentiometers. The modular structure of this positioner series enables conversion from an analog to a “intelligent” positioner by easy exchanging the electronics.
In version “Electrical Position Transmitter” SRI990-T the device includes the option Position Transmitter but no con- troller and no pneumatic components. The positon of actuator is given as 4 – 20 mA output signal.
Further versions see next page.
FEATURES
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Configuration by means of switches and potentio- meters
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Load 300 Ω
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Low air consumption
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Stroke 8 to 260 mm (0.3 to 10.2 inch)
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Angle range up to 95 degree
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Supply air pressure up to 6 bar (90 psig), with spool valve up to 7 bar (105 psig)
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Single acting or double acting
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Mechanical travel indicator
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Position transmitter 4 – 20 mA as option
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Attachment to stroke actuators directly or according to IEC 534 part 6 (NAMUR)
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Attachment to rotary actuators according to VDI/VDE 3845
• Protection class IP 65 (IP 66 on request) and NEMA 4X
• Explosion protection:
II 2 G EEx ia IIC T6 according to ATEX
or “Intrinsic Safety” according to FM and CSA
Additional equipments (compatible to SRD991):
• Integrated inductive limit switches, independent of
device electronics
Accessories (compatible to SRD991):
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Gauge attachment for supply air and outputs
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Booster relay
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SRI990 can be upgraded to a SRD991 by exchan- ge of the electronic motherboard