b'3.2.2Furnace Control The percentage deviation of the area of the furnace mean temperature from the standard temperature/time curve was within the standard requirements. Figure 3 shows the percentage deviation of the mean furnace temperature from the Standard curve. Figure 3: Percentage Deviation from Standard Curve 2015ActualAllowable105%0-5-10-15-200 20 40 60 80 100 120 140Time (minutes) 3.2.3Pressure Measurements The differential pressure of the furnace above the laboratory atmosphere was controlled to be 0 Pa at 500 mm above the notional floor which corresponds to 3.2 Pa at the pressure probe in the furnace. The differential pressure was monitored using a micromanometer connected to a computer controlled data logging system which recorded the pressure at 15 second intervals.Figure 4 shows the furnace pressure variation with time. REPORT NUMBER:ISSUE DATE:PAGE:FR10430-001 ISSUE 21 June 202312 of 21 THE LEGAL VALIDITY OF THIS REPORT CAN ONLY BE CLAIMED ON PRESENTATION OF THE COMPLETE SIGNED PAPER REPORT.EXTRACTS OR ABRIDGMENTS OF THIS REPORT SHALL NOT BE PUBLISHED WITHOUT PERMISSION FROM BRANZ LTD.branz.nz | 1222 Moonshine Rd, RD1, Porirua 5381, Private Bag 50 908, Porirua 5240, New ZealandPhone +64 4237 1170branz@branz.co.nz'