UL 10C:2016 pdf download.Positive Pressure Fire Tests of Door Assemblies.
5 Furnace Temperatures
5.1 The temperatures of the test exposure shall be tile average temperature obtained by a minimum of three thermocouples and no fewer than one thermocouple per 15 square feet of test assembly exposed to the furnace symmetrically disposed and distributed to show the temperature near all parts of the test assembly, Figure 5.1. The thermocouples shall be protected by: (1) seaied 112 in (12.7 mm) wrought-steel or wrought-iron pipe of standard weight or (2) Inconel 600 series schedule 40 pipe (0.8 inch OD 10.6 inch ID. 20 mm OD 115 mm ID).
5.2 The junction of the thermocouples shall be initially located 6 in (152 mm) from the exposed face of the test assembly or from the constnjction in which the assembly is installed. During the tire exposure, if the movement of the test sample causes the samples distance to the thermocouple junction to vary, the location of the junction shall be reset to 6 in (152 mm) at intervals not exceeding 10 minutes during the first 30 minutes of the test. Thereafter, the intervals are to be increased to not more than 30 minutes.
5.3 The temperatures shall be read at intervals not exceeding 1 minute.
5.4 The accuracy of the furnace control shall be such that the area under the time-temperature curve, obtained by averaging the results from the thermocouple readings, Is within 10 percent of the corresponding area under the standard time-temperature curve for fire tests of 1 hour or less duration, within 7.5 percent for those over 1 hour and not more than 2 hours, and within 5 percent for tests exceeding 2 hours in duration.
5.5 For a summary of the accuracies for the various rating periods, see Appendix A.
5.1 The temperatures of the test exposure shall be tile average temperature obtained by a minimum of three thermocouples and no fewer than one thermocouple per 15 square feet of test assembly exposed to the furnace symmetrically disposed and distributed to show the temperature near all parts of the test assembly, Figure 5.1. The thermocouples shall be protected by: (1) seaied 112 in (12.7 mm) wrought-steel or wrought-iron pipe of standard weight or (2) Inconel 600 series schedule 40 pipe (0.8 inch OD 10.6 inch ID. 20 mm OD 115 mm ID).
5.2 The junction of the thermocouples shall be initially located 6 in (152 mm) from the exposed face of the test assembly or from the constnjction in which the assembly is installed. During the tire exposure, if the movement of the test sample causes the samples distance to the thermocouple junction to vary, the location of the junction shall be reset to 6 in (152 mm) at intervals not exceeding 10 minutes during the first 30 minutes of the test. Thereafter, the intervals are to be increased to not more than 30 minutes.
5.3 The temperatures shall be read at intervals not exceeding 1 minute.
5.4 The accuracy of the furnace control shall be such that the area under the time-temperature curve, obtained by averaging the results from the thermocouple readings, Is within 10 percent of the corresponding area under the standard time-temperature curve for fire tests of 1 hour or less duration, within 7.5 percent for those over 1 hour and not more than 2 hours, and within 5 percent for tests exceeding 2 hours in duration.
5.5 For a summary of the accuracies for the various rating periods, see Appendix A.
