procurement of electro-pneumatic double acting fail freeze smart positioner with inbuilt feedback unit and linkage for unit-5 and 6 of stps through capex 2025-26 , procurement of electro-pneumatic double acting fail freeze smart positioner with inbuilt feedback unit and linkage for unit-5&6 of stps through capex 2025-26 , smart electro-pneumatic positioner additional data: 1) type: compact & smart type universal positioner (fail freeze) which shall be suitable for both linear and rotary actuator without change in design or model & it will cover stroke length 3 mm to 400 mm and with auto calibration facility. 2) input signal: 4 # 20 ma, two wired loop power from dcs, 24v dc. 3) supply pressure: 1.4 to 6 bar 4) output: 0 to 7 bar, as required for operating actuator. 5) acting type: universal (single/ double acting), same positioner must be selectable as single or double acting type and fail freeze. 6) actuator travel: for linear type 10 to 400 mm andfor rotary type 0 to 90° 7) air connection: 1/2 /1/4 npt 8) gauge connection: 1/8 npt with gauge for supply pressure and output. 9) cable gland: 1/2 npt 10) operating temperature: 0 to 85 deg c, humidity: 0-95 % 11) response time: <100 ms 12) housing: aluminum/ss or any suitable metallic enclosure. 13) degree of protection: ip66 or better 14) position feedback: 4 # 20 ma two wire connection with 24 v dc. 15) output characteristics: linear, quick open and equal percentage. for special applications demanding fast opening and fast closing, positioners must have parameters to achieve the same. 16) deadband: configurable from 0.1% to 10 %. 17) hysteresis: # 0.5% 18) direction of action: i) rising or falling characteristic at the setpoint input. ii) rising or falling output pressure and position feedback with rising setpoint. 19) calibration: one touch auto calibration facility with push buttons. auto calibration can be simple and user friendly & can be compatible most of control valve. manual calibration function can set zero point or end point manually. 20) motion type: linear and rotary motion both must be supported. lever to be supplied for both rotary and linear movement. capable of universal mounting for rotary & linear both. 21) failure characteristics: smart positioner shall be intrinsically compatible for achieving fail freeze functions in case of failure of supply air and also in case of failure of 4-20 ma input signal based on the application demand. 22) display: local lcd display with push button. 23) preferable display values: input signal (demand), valve position & position feedback signal. 24) pressure gauges block: each positioner to be supplied with attached pressure gauges in the gauge block assembly. 25) split range operation: adjustable start-of-scale and full-scale values. 26) diagnostic feature: positioner should have intelligent diagnostic features. valve diagnosis parameters shall be available as default without additional cost. 27) communication protocol: the positioner should be hart7 compatible. => limited