Start the blower & amp; adjust the flow by means of value to some desired difference in manometer level.

Start the heating of the test section with the help of dimmerstat and adjust desired heat input with the help of voltmeter & ammeter.

Take readings of all the thermocouples at an interval of 5 minutes until the steady state is reached.

Wait for the steady state and take the readings of all six thermocouples at steady state.

Note down the heater input.