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Compare meter-in-circuit with meter-out-circuit, draw neat sketch of meter-in-circuit.
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Sr. No. Meter-IN Meter-OUT
01 When a pressurized oil flow through the circuit it passes through D. C. valve and enters in the flow control valve. The opening of the flow control valve is reduced to decrease the oil flow rate. Control of piston is achieved only in advance stroke When oil flow from pump to the actuator through D.C. valve it will push the piston in the forward direction. The oil from the piston rod side is pushed through the outlet of B of D.A. Cylinder through the return line.
02 Flow control valve ‘F’ is placed in pressure line Flow control valve ‘F’ is placed in return line
03 Give best result when used in higher pressure systems The actuator movement is very stable
04 Relatively small friction to face by piston which increases life of piston Heat generated due to throttling at flow control valve is given to the oil tank.
05 Suitable for very low piton rod speeds Provides positive speed control of the cylinder
06 Throttling of fluid takes place which heats the oil and hot oil into admitted into cylinder Since both sides of piston there is pressure, there is possibility of higher friction.
07 The circuit is used where finer speed control is required. This circuit is used where very stable movements of actuators are needed.
08 Used in - Surface grinders, Welders, Milling Machines Used in - Drilling, boring, reaming and tapping operations

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