West Bengal Power Development Corporation Limited

West Bengal Power Development Corporation Limited has published 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. Last date of submission for this tender is 2025-07-30. This is a Actuator tender in Purulia, West Bengal