Answer Posted / g.ramesh
the difference value b/w the set and reset value of the
controller is called as hysteresis
| Is This Answer Correct ? | 4 Yes | 10 No |
Post New Answer View All Answers
Valve positioner and actuators in detail.
What is compensation for flow ? Why we use compensation ? What are the factors of different compensation ? We not use then what problems may happen ?
what is the procedure to callibrate temp controller ,pressure controller,etc. suppose a temp controller showing error 1.5 degree centigrate how can i minimize it.
please tel me the calibration of pneumatic controler.
Specific gravity.
plz tell me clearly about PID.."when v have to change I value,D value,GAIN??
what is the procedure of O2 sensor(ABB) calibration?
what is the usage of QDV & VOLUME BOOSTER
Calculate the maximum pressure drop that can be allowed to occur across a control valve, so that we can prevent cavitation / flashing from occurring. Use the following formula: Δ P allow = Km (P1 – PvapourA) where, Δ P allow - the maximum allowable differential pressure for sizing purposes, or terminal pressure drop; Km- the valve recovery coefficient from the manufacturer’s catalogue; P1 - absolute inlet fluid pressure; PvapourA - absolute fluid vapour pressure at the inlet temperature; Use Atmospheric pressure = 101.3 kPa, P1 = 1200 kPa(g), PvapourA = 4 kPa, KM = 0.72
What is wet leg condition and why is it used?
Hi i m B.E. In elect. & comm. I m workin in bio mass plant from 6 mnths as inst. Engg. but now i m in dept. Of operation as shift engg...which is best operation or inst. 4 me? M confusd..plz help and reply me..
what is sliding spool valves?
Describe the functions of the Operator Interface including the considerations related to alarming and display layout/configuration/layers.
What is the reason PT speed not incresed in gas turbine?
What are the maximum packet size of: a) HART b) Profibus DP c)Profibus PA d) DeviceNet e) Foundation Fieldbus