SRI990 Analog Positioner SRI990-T & Electrical Position Transmitter
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 an “intelligent” positioner by easy exchanging the electronics.
• Configuration by means of switches and potentiometers
• Load 300 Ω
• 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 66 and NEMA 4X
• Explosion protection: II 2 G Ex ib/ia IIB/IIC T4/T6 according to ATEX or “Intrinsic Safety” according to CU TR
features
Additional equipment (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