SRI990

Analog Valve Positioner SRI990 ; Electrical Position Transmitter SRI990-T with HART, FoxCom, PROFIBUS-PA, FOUNDATION Fieldbus H1 or Without Communication

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 controller and no pneumatic components. The positon of actuator is given as 4 - 20 mA output signal.

MAIN FEATURES

• Configuration by means of switches and potentiometers
• Load 300 O
• Low air consumption
• Stroke 8 to 260 mm (0.3 to 10.2 inch)
• Angle range up to 95 degree
• Supply air pressure up to 6 bar (90 psig), with spool valve up to 7 bar (105 psig)
• Single acting or double acting
• Mechanical travel indicator
• Position transmitter 4 - 20 mA as option
• Attachment to stroke actuators directly or according to IEC 534 part 6 (NAMUR)
• 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 ib/ia IIB/IIC T4/T6 according to ATEX or “Intrinsic Safety” according to FM
• Additional equipments (compatible to SRD991):
• Integrated inductive limit switches, independent of device electronics
• Accessories (compatible to SRD991):
• Gauge attachment for supply air and outputs
• Booster relay
• SRI990 can be upgraded to a SRD991 by exchange of the electronic motherboard

Supplied by DP-Flow