HSM48 Round Diaphragm Apparatus

HSM48 Round Diaphragm Apparatus

Sturdy, compact, self contained bench top unit for determining the surface strains and deflections of a flexible diaphragm under varying pressures.

An aluminium diaphragm is clamped rigidly around its outer edge, creating a volume underneath its surface into which oil is filled.

On the top surface of the diaphragm are attached 8 precision strain gauges at differing orientations. As the diaphragm is flexed, the strain gauge output is fed into a digital display, which is supplied.

The force applied to the diaphragm is created by pressurising the oil underneath the diaphragm using a fine adjustment control mechanism. An analogue pressure indicator monitors the pressure, whilst an electronic pressure sensor monitors the same pressure but gives an output signal to the digital display.

Traversing across the surface of the diaphragm is a digital dial gauge. By positioning the dial gauge at various radii across the diaphragm, the pressurised profile of the diaphragm can be mapped and compared against theoretical profiles.

The digital display supplied captures the key experimental parameters of surface strain, pressure and deflection in one easy to read display. Strain and pressure can be zeroed (tared) at the display, whereas the dial gauge can be zeroed at the gauge itself.

Software comes supplied with the apparatus for use on a host computer (not supplied). The software allows capturing of the key experimental parameters during testing and gives the user the ability to capture, review, retrieve, manipulate, print and export the data. The experimental data can be compared against theoretical data using the software, or alternatively using the theory included within the comprehensive instruction manual supplied with the unit.

A 2 year warranty and all necessary spares and accessories are supplied.

HSM48 Round Diaphragm Apparatus
  • Apparatus for determining surface strain and deflection of flexible diaphragm
  • To have strain gauge attached to surface
  • To utilise digital dial gauge for recording surface deflection and profile of diaphragm
  • Diaphragm pressurised causing deflection and surface strain
  • To have fine pressure adjustment for adjusting applied pressure to diaphragm
  • Digital display for strain, pressure and deflection values
  • Data acquisition software for key experimental parameters
  • Instruction manual supplied
  • 2 year warranty
  • Measurement of diaphragm disc surface strain using strain gauges
  • Measurement of diaphragm disc deflection with a dial gauge
  • Determination of radial strain
  • Determination of circumferential strain
  • Diaphragm surface profile
  • Strain gauge technology and uses
  • Comparison of actual and theoretical results
  • Mohr Circle