Description: The SRI990 RCV Analog Positioner is designed for operating pneumatic valve actuators with an analog input of 4 to 20 mA. It features easy adjustment through switches and potentiometers and can be upgraded from an analog to an intelligent positioner by changing the electronics.

Features: The positioner offers fast control behavior, easy local operation, and configuration options via DIP switches. It allows electrical adaptation of zero and span using potentiometers, with independently adjustable gain and damping. It includes a switch for pneumatic testing and supports a load of 300 Ohms. The device is easily mountable on both linear and rotary actuators.

Options: Available options include a stainless steel housing, limit switches (inductive or micro), position feedback of 4 to 20 mA, and manifolds for gauges and boosters.

Specifications: The positioner operates with an analog setpoint of 4 to 20 mA and a load of 300 Ohms. It features linear setpoint characteristics and allows adjustments for direction of rotation, signal range, split range, and direct or reverse action via DIP switches. Zero and span, gain, and damping can be adjusted using potentiometers. It supports pneumatic testing via a DIP switch and includes a mechanical indicator as standard. The air supply ranges from 1.4 to 6 bar (20 to 90 psig) or 1.4 to 7 bar (20 to 105 psig) with a spool valve. The stroke range is 8 to 260 mm (0.3 to 10.2 inches), and the angle of rotation is up to 95 degrees, with an optional extension to 300 degrees. The protection class is NEMA 4X or IP 65 / IP 66, with electrical classifications for intrinsic safety. The ambient temperature range is -40 to 80 °C (-40 to 176 °F), and the weight is 1.7 kg (3.7 lb) for single acting and 2 kg (4.4 lb) for double acting. The positioner can be attached to linear actuators according to IEC 534 Teil 6 (NAMUR) and VDI/VDE 3847, and to rotary actuators according to VDI/VDE 3845 and VDI/VDE 3847, with an extensive attachment kit available for other actuators.