The Armfield Temperature Measurement and Calibration unit is designed to introduce students to temperature and how different techniques can be employed to measure this variable.
The thermometric properties and characteristics of temperature measuring devices can be investigated and the devices calibrated using precisely generated fixed points and an accurate reference thermometer.

The Armfield Pressure Measurement and Calibration unit has been designed to introduce students to pressure and how different techniques can be employed to measure this variable. Different fixed pressures are generated using a simple Dead-weight Pressure Calibrator for the purpose of calibrating the measuring devices.
A Bourdon type pressure gauge and electronic type pressure sensor are connected to the calibrator to allow their characteristics, including accuracy and linearity, to be determined.

The Armfield Saturation Pressure Apparatus has been designed to introduce students to how the temperature of water behaves at its boiling point with variation in the absolute pressure. Saturation curves can be obtained by the student and compared with published steam tables. The quality of steam exiting the apparatus can be determined using a throttling calorimeter connected at the point of discharge.

Recycle is a simple phenomenon which occurs in many aspects of everyday life but a concept that can lead to confusion in engineering applications when combined with other principles such as mass and energy balances and the use of the steady flow energy equation.
The Armfield Recycle Loops apparatus has been designed to demonstrate clearly, both visually and experimentally, what recyle is and to allow mass and energy balances to be performed under steady state and unsteady state conditions. The application modelled is typical of a heating arrangement in the chemical, food or pharmaceutical industries whereby the temperature of a product is raised or lowered offline by recirculating some of the product through a heat exchanger.
The practical training exercises are appropriate to heat transfer and thermodynamics courses and the training of technicians and engineers in those disciplines.

The Armfield Expansion Processes of a Perfect Gas apparatus has been designed to introduce students to a range of basic thermodynamic processes using air as the working fluid.