The temperature in the measurement enclosure is recorded at one or two points by temperature sensors which are connected so as to show a mean value.

The measuring points shall be representative of the temperature inside the measurement enclosure.

2.2.5. The measurement enclosure is then sealed and the background concentration, temperature and barometric pressure are measured.

2.2.1. Determination of the Diluted Exhaust Gas Flow PDP-CVS system The calculation of the mass flow over the cycle, if the temperature of the diluted exhaust is kept within ± 6 K over the cycle by using a heat exchanger, is as follows: M TOTW = 1,293 x V0 x NP x (pB - p1 ) x273 / (101,3 x T) where M TOTW = mass of the diluted exhaust gas on wet basis over the cycle V0 = volume of gas pumped per revolution under test conditions (m³/rev) NP = total revolutions of pump per test pB = atmospheric pressure in the test cell (kPa) p1 = pressure drop below atmospheric at the pump inlet (kPa) T = average temperature of the diluted exhaust gas at ...[+++]pump inlet over the cycle (K) If a system with flow compensation is used (i.e. without heat exchanger), the instantaneous mass emissions shall be calculated and integrated over the cycle.

The temperature of the inner surface of the mixing chamber must be maintained above the dew point of the exhaust gases and a minimum temperature of 338 °K (65 °C) is recommended.

The competent authority shall, either by means of instructions in the permit conditions or by means of generally binding rules, ensure continuous measurement at the incineration plant of the temperature in the immediate vicinity of the furnace's inner wall or at another representative point in the furnace in accordance with what the competent authority permits, and of the acidity, pressure, temperature and water vapour content of the flue gases.