F9092 – Fluid Properties & Hydrostatics Bench


F9092 – Fluid Properties & Hydrostatics Bench

The Armfield Fluid Properties and Hydrostatics Bench is designed to demonstrate the properties of fluids and their behaviour under hydrostatic conditions (fluid at rest).


The Armfield Fluid Properties and Hydrostatics Bench is designed to demonstrate the properties of fluids and their behaviour under hydrostatic conditions (fluid at rest).

This enables students to develop an understanding and knowledge of a wide range of fundamental principles and techniques, before studying fluids in motion.

The equipment is mounted on a steel-framed bench fitted with castors. A variety of measuring devices is incorporated, either fastened to the back of the bench or free-standing.

Water is stored in a polythene tank situated on the lower shelf of the bench.

The water can be transferred by two positive displacement hand pumps, either to an elevated open storage tank connected to a number of glass tubes for free surface studies, or to a plastic sink recessed into the working surface so that benchtop experiments may be conducted without spillage.

All excess water is returned to the storage tank via the sink drain.

The following experimental apparatus is included:

  • Universal hydrometer and hydrometer jars
  • Falling sphere viscometers
  • Free surface tubes
  • Hook and point gauge
  • Mercury barometer (mercury not supplied)
  • Bourdon gauge
  • U-tube manometers
  • Deadweight pressure gauge calibrator and weights
  • Hydrostatic pressure apparatus
  • Pascal’s apparatus
  • Parallel plate capillary apparatus
  • Capillary tube apparatus
  • Lever balance with displacement vessel, bucket and cylinder
  • Metacentric height apparatus
  • Measuring cylinder
  • Thermometer
  • Air pump
  • 600ml beaker
  • Stop clock

Technical Specifications

Features & Benefits


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  • The provision of practical instruction exercises demonstrating the principles of fluid mechanics, in particular:
  • Understanding the properties of fluids:
  • Determining the density, specific gravity and viscosity of different liquids
  • Observing the effects of capillarity
  • Understanding the effects of static pressure:
  • Demonstrating that the free surface of a static liquid is horizontal
  • Studying the effect of flow on a free surface
  • Measuring changes in liquid level
  • Studying the relationship between intensity of liquid pressure and depths
  • Determining the position of the centre of pressure on a plane surface
  • Studying the operation and application of pressure gauges and manometers:
  • Using a direct reading mercury barometer (mercury not supplied)
  • Measuring air and water pressure using manometers
  • Comparing results obtained from various devices
  • Calibrating a Bourdon-type pressure gauge using a deadweight pressure gauge calibrator
  • Investigating the buoyancy force and stability of floating bodies:
  • Verifying Archimedes’ principle
  • Determining metacentric height

  • Universal hydrometer: Range 0.70-2.00 subdivided in 0.01 intervals
  • Falling sphere viscometer: 40mm tube diameter
  • Hydrostatic pressure apparatus: Comprises ounterbalanced precision quadrant pivoted on knife edges at its centre of arc
  • Direct reading barometer: With compensated silvered metal scale. Range 585-790mm subdivided in 1mm intervals. Includes thermometer
  • 100mm dial pressure gauge: Range 0-200 kN/m2 (kPa) and equivalent head of water in metres
  • Deadweight pressure gauge calibrator: With 2 x 0.5kg, 1kg and 2.5kg weights
  • Lever balance: 178mm diameter pan, hook for use in buoyancy experiments, antiparallax cursor, double scale 0-0.25kg and 0-1.00kg
  • Thermometer: Range -10˚C to +50˚C


H12-8: Basic Portable Pressure Meter

Consequent to its hazardous nature many technicians prefer not to use mercury or its use may be prohibited in the laboratory. In any case Armfield is unable to include it in the supply with the purchase of mercury manometers due to shipping restrictions. With this in mind Armfield offers a handheld, portable, battery-operated pressure meter (H12-8), which is capable of measuring pressures of air or water from 0-2,000mBar (0-1,500mm Hg).

Vernier calliper
Reference pressure gauge – Bourdon type
Electronic top-loading balance


Volume: 2.7m³

Gross Weight: 270Kg

Height: 1.45m

Width: 1.83m

Depth: 0.61m


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