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Civil Engineering Material Testing

Sensitive Volume Change Gauge Apparatus (AIM 084)

Sensitive Volume Change Gauge Apparatus (AIM 084)This Volume Change Gauge works on the principle of reversing the direction of flow when the limit of the volume change scale is reached. The number of cycles with the volume of fluid handled in each cycle provide the total volume change, whereas the sensitivity is governed by the dia of the polythene tube used. Sensitivity of 0.003ml/mm with 6 ml volume of fluid per cycle has been realized by this sensitive volume change gauge.The apparatus consists of a volume measuring polythene tube running along both sides of a scale and connected at both ends to two mercury traps.These traps are connected to flow reversal valves through a manifold. The length of the polythene tube is enough to measure 6 ml volume of fluid per cycle. A small pallet of mercury is introduced in the circuit to be used as a cursor, and the movement of pallet is measured.The unit is tested to a pressure of 20 bar (20 kg/cm2) and is designed for wall mounting.


Volume Change


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