UL 10B:2008 pdf download.Fire Tests of Door Assemblies.
4A.5 The pressure-sensing probes are to be located at a minimum of 18 inches from the edges of the furnace chamber.
4A.6 The pressure at each location is to be measured using a differential pressure instrument capable of reading In increments no greater than 0.01 inch water gauge (2.5 Pa) with an accuracy of ±0.005 inch water gauge (±1.2 Pa) or better. The differential pressure measurement instrument is to be located so as to minimize stack effects caused by vertical wns of pressure tubing between the pressure-sensing probes and the differential pressure measurement instwment locations.
4A.7 Based on the vertical separation and pressure differences between the two pressure-sensing probes, a calculation of the zero pressure plane is to be made. The furnace pressure Is to be positive above the zero pressure plane.
5 Unexposed Surface Temperatures
5.1 Unexposed surface temperatures are to be recorded, and are to be determined in the following manner.
Exception: Single-layer metal doors are not required to comply with this section.
5.2 Unexposed surface temperatures are to be taken at not less than three polnts, with at least one thermocouple in each 1 6-square foot (1 .5-rn2) area of the door. Thermocouples are not to be located over reinforcements extending through the door, over glass panels, or nearer than 12 inches (305 mm) from the edge of the door.
5.3 Unexposed surface temperatures are to be measured with thermocouples placed under flexible, oven-dry, felled pads. The properties of these pads are to comply with the requirements specified in Appendix B. The thermocouple and fetted pad are to be fixed to the surface of the test specimen by mechanical fastening, tape or adhesive, based on the nature of the material forming the specimen. When a mechanical fastening method is used to secure the thermocouple and felled pad, the testing laboratory shall ensure the fastener is not greater than 3/8 inch in length. The pads shall be fixed so as to maintain contact between the thermocouple and the surface of the test specimen.
4A.6 The pressure at each location is to be measured using a differential pressure instrument capable of reading In increments no greater than 0.01 inch water gauge (2.5 Pa) with an accuracy of ±0.005 inch water gauge (±1.2 Pa) or better. The differential pressure measurement instrument is to be located so as to minimize stack effects caused by vertical wns of pressure tubing between the pressure-sensing probes and the differential pressure measurement instwment locations.
4A.7 Based on the vertical separation and pressure differences between the two pressure-sensing probes, a calculation of the zero pressure plane is to be made. The furnace pressure Is to be positive above the zero pressure plane.
5 Unexposed Surface Temperatures
5.1 Unexposed surface temperatures are to be recorded, and are to be determined in the following manner.
Exception: Single-layer metal doors are not required to comply with this section.
5.2 Unexposed surface temperatures are to be taken at not less than three polnts, with at least one thermocouple in each 1 6-square foot (1 .5-rn2) area of the door. Thermocouples are not to be located over reinforcements extending through the door, over glass panels, or nearer than 12 inches (305 mm) from the edge of the door.
5.3 Unexposed surface temperatures are to be measured with thermocouples placed under flexible, oven-dry, felled pads. The properties of these pads are to comply with the requirements specified in Appendix B. The thermocouple and fetted pad are to be fixed to the surface of the test specimen by mechanical fastening, tape or adhesive, based on the nature of the material forming the specimen. When a mechanical fastening method is used to secure the thermocouple and felled pad, the testing laboratory shall ensure the fastener is not greater than 3/8 inch in length. The pads shall be fixed so as to maintain contact between the thermocouple and the surface of the test specimen.
