1. General
The Marcet boiler is designed to determine the corresponding temperature and pressure values for wet saturated steam at all pressures ranging from atmospheric up to 17 bar.
2. Composition
The unit includes:
• Cylindrical boiler, made of thermically insulated steel,
• Electrical resistance, for water heating and evaporation
• Thermometer for the readout of the temperature inside the boiler
• Pressure gauge for the readout of the relative pressure inside the boiler
• Tap for filling the boiler controlling the maximum water level in.
• Max pressure safety valve
• Water discharge tap.
• Magnetothermal differential switch, manual controls, signalling lamps and protection fuses
DIDACTA Italia S.r.l. - Strada del Cascinotto, 139/30 - 10156 Torino - Italy
Tel. +39 011 2731708 - Fax +39 011 2733088 - http://www.didacta.it - E-mail: info@didacta.it

3. Description
Marcet boiler by Didacta enables operators to determine the pressure and temperature values of saturated wet steam at all pressure levels included between atmospheric pressure and 17 bar.
The cylindrical boiler is filled with a known quantity of water, then heat is given through the resistance. Heat is supplied to the water in the boiler under steady-volume rather than steady-pressure conditions. The liquid gradual evaporation will thus cause pressure - and therefore the saturation temperature - to increase in the boiler enclosed space and the values are visualized on the thermometer and manometer.
4. Technical Features
• Maximum boiler capacity : 3l
• Electrical resistance: 2kW
• Thermometer temperature range: 0°C to +250°C
• Manometer pressure range: 0bar to 25bar
• Maximum safety valve pressure: 18bar
• Maximum test pressure: 34 bar
5. Experiments
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Determination of the pressure-temperature relationship for saturated water steam.
Plotting of Mollier’s diagram
6. Service requirements
• Electrical supply: 220/240 V single-phase, 50 Hz; 2 kW
• Hydraulic supply: from mains
7. Weight and dimensions
• Dimensions: 550 x 400 x 900 h mm
• Weight: 74 kg
Cod. R00674/E 0910 Ed. 01 Rev. 04
In any time and without notice, Didacta Italia can carry out any appropriate modification on the product details, always maintaining their main features, according to the designing and teaching necessity.