1.1 This test method covers fire-test-response applicable to window assemblies, including glass block and other light transmitting assemblies, for use in walls or partitions to retard the passage of fire (see Appendix X1).1.2 This fire-test-response test method will determine the ability of window assemblies, including glass block and other light transmitting assemblies, to function as a fire barrier during a standard fire endurance test. Such tests shall not be construed as determining suitability of window assemblies for continued use after fire exposure (see Appendix X1.2).1.3 This fire-test-response test method is intended to evaluate the ability of window assemblies, including glass block or other light transmitting assemblies, to remain in a wall or partition during a predetermined fire test exposure, which is then followed by the application of a hose stream (see Appendix X1.3).1.4 The fire exposure is not necessarily representative of all fire conditions, which normally vary with changes in the amount, nature and distribution of fire loading, ventilation, compartment size and configuration, and heat sink characteristics of the compartment. It does, however, provide a relative measure of fire performance of window assemblies under threse specified fire exposure conditions.1.5 The hose stream test used in this test method is not designed to be representative of an actual hose stream used by a fire department during fire suppression efforts.1.6 Any variation from the construction or conditions that are tested will possibly change the performance characteristics of the assembly.1.7 This fire-test-response standard does not provide the following:1.7.1 The fire endurance of window assemblies in walls or partitions constructed of materials other than those tested.1.7.2 A temperature measurement on the unexposed surface of the window assembly.1.7.3 A measurement of smoke or products of combustion that pass through the window assembly.1.7.4 A measurement of smoke, toxic gases, or other products of combustion generated by the window assembly.Note 1—The information in 1.7.3 and 1.7.4 may be important in determining the fire hazard or fire risk of window assemblies under actual fire conditions. This information may be determined by other suitable fire test methods. For example, flame spread and smoke development may be determined by Test Method E 84.1.8 The fire-test-response test method permits through-openings, that are created by cracking, separation, or loss of glazing material, provided they do not exceed specified limits.1.9 The values stated in either inch-pound or SI units are to be regarded separately as the standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other.Note 2—Combining values from the two systems may result in non-conformance to this test method.1.10 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.1.11 This standard is used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions.1.12 The text of this test method references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this test method.

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This specification covers requirements for multiplayer pipe type 2 and compression fittings for hot and cold drinking water systems. Multilayer pipe type 2 is produced using a butt-welded aluminum pipe as a core, with an extruded inside layer of crosslinked polyethylene (PEX). An adhesive layer is used to bond the inside layer to the wall of the aluminum pipe. An outer layer of polyethylene (PE) and an adhesive layer are extruded to the outer wall of the aluminum pipe. This specification includes compression fittings and thread or solder adapters for use with pipe and fittings. The pipe dimensions, compression-fitting dimensions, burst pressure, thermal cycling, and excessive temperature-pressure capability shall be in conformance to the specification.1.1 This specification covers requirements for multilayer pipe type 2 and compression fittings for hot and cold drinking-water systems, with a maximum pressure rating of 1000 kPa (145 psi) at 82°C (180°F).Note 1—Multilayer Pipe Type 2Construction-based pressure rated pipe comprising more than one layer in which at least 60 % of the wall thickness is polymeric material.1.2 Multilayer pipe type 2 is produced using a butt-welded aluminum pipe as a core, with an extruded inside layer of crosslinked polyethylene (PEX). An adhesive layer is used to bond the inside layer to the wall of the aluminum pipe. An outer layer of polyethylene (PE) and an adhesive layer are extruded to the outer wall of the aluminum pipe.1.3 Multilayer pipe type 2 is produced in configurations 1 and 2, as referenced in Fig. 1.1.4 This specification includes compression fittings, which are referenced in Fig. 2 .1.5 Specifications for thread or solder adapters for use with pipe and fittings meeting the requirements of this specification are given in Annex A1 and Annex A2.1.6 The following precautionary caveat pertains only to the test method portion of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.1.7 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

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This specification covers requirements for multilayer pipe type 2 and compression fittings for hydronic heating systems. Multilayer Pipe Type is a construction-based pressure rated pipe comprising more than one layer in which at least 60 % of the wall thickness is polymeric material. Multilayer pipe type 2 is produced using a butt-welded aluminum pipe as a core, with an extruded inside layer of crosslinked polyethylene (PEX). An adhesive layer is used to bond the inside layer to the wall of the aluminum pipe. An outer layer of polyethylene (PE) and an adhesive layer are extruded to the outer wall of the aluminum pipe. Materials shall be tested and shall conform to specified values of multilayer pipe configurations 1 and 2, compression fittings for multilayer pipe, O-rings, multilayer pipe dimensions, compression fitting dimensions, minimum burst pressure, sustained pressure, thermal cycling test, and excessive temperature/pressure capability. Among the test methods included are: sustained-hydrostatic-pressure test, thermal cycling test, water hammer test, delamination, fusion line test, and excessive temperature/pressure capability test.1.1 This specification covers requirements for multilayer pipe type 2 and compression fittings for hydronic heating systems, with a maximum pressure/temperature range of 1000 kPa (145 psi), at 82°C (180°F).Note 1—Multilayer Pipe Type 2Construction-based pressure rated pipe comprising more than one layer in which at least 60 % of the wall thickness is polymeric material.1.2 Multilayer pipe type 2 is produced using a butt-welded aluminum pipe as a core, with an extruded inside layer of crosslinked polyethylene (PEX). An adhesive layer is used to bond the inside layer to the wall of the aluminum pipe. An outer layer of polyethylene (PE) and an adhesive layer are extruded to the outer wall of the aluminum pipe.1.3 Multilayer pipe type 2 is produced in Configurations 1 and 2, as shown in Fig. 1.1.4 This specification includes compression fittings, which are referenced in Fig. 2.1.5 Specifications for threaded or solder adapters for use with pipe and fittings meeting the requirements of this specification are given in Annex A1 and Annex A2.1.6 The following safety hazards caveat pertains only to the test method portion of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.1.7 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with this specification.

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5.1 The energy input rate test is used to confirm that the booster heater is operating properly prior to further testing.5.2 Booster heater flow capacity is an indicator of the booster heater's ability to supply hot water for sanitation. The booster heater's flow capacity can be used by the operator to determine the appropriate size booster heater for their operation. Booster heater energy rate is an indicator of the booster heater's energy consumption during continuous water flow. The energy rate can be used by food service operators to estimate the energy consumption of the booster heater. Booster heater energy efficiency is a precise indicator of a booster heater's energy performance during the continuous flow test. This information enables the food service operator to consider energy performance when selecting a booster heater.5.3 Booster heater flow capacity at 50 % of the maximum capacity is an indicator of the booster heater's ability to provide hot water for sanitation at this reduce flow rate condition. Booster heater energy efficiency at a flow rate of 50 % of maximum capacity is an indicator of a booster heater's energy performance at this flow rate. The booster heater outlet temperature during the capacity test at a flow rate of 50 % of maximum capacity is an indicator of the booster heater's temperature response at this reduced flow rate.5.4 Preheat energy and time can be useful to food service operators to manage power demands and to know how quickly the booster heater can be ready for operation.5.5 Idle energy rate and pilot energy rate can be used to estimate energy consumption during standby periods.1.1 This test method evaluates the energy efficiency, energy consumption and water heating performance of booster heaters. The food service operator can use this evaluation to select a booster heater and understand its energy consumption.1.2 This test method is applicable to electric, gas, and steam powered booster heaters.1.3 The booster heater can be evaluated with respect to the following (where applicable):1.3.1 Energy input rate (9.2).1.3.2 Pilot energy rate (9.3).1.3.3 Flow capacity rate, energy rate, and energy efficiency with 110°F (43.3°C) and 140°F (60.0°C) supply to the booster heater inlet (9.4).1.3.4 Thermostat calibration (9.5).1.3.5 Energy rate and energy efficiency at 50% of flow capacity rate with 110°F (43.3°C) and 140°F (60.0°C) supply to the booster heater inlet (9.6).1.3.6 Preheat energy and time (9.7). The preheat test is not applicable to booster heaters built without water storage and will not have auxiliary water storage connected to the booster heater to complete the water heating system.1.3.7 Idle (standby) energy rate (9.8).1.4 The values stated in inch-pound units are to be regarded as standard. The SI units in parentheses are for information only.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 646元 / 折扣价： 550 元 加购物车

定价： 1229元 / 折扣价： 1045 元

This amendment is applicable to equipment for multi-source STEREOTACTIC treatment including radiosurgery and RADIOTHERAPY (MSSR). STEREOTAXIS is defined as a method for locating points within the human body using an external three-dimensional frame of ref

定价： 455元 / 折扣价： 387 元

INTRODUCTION Subclause 29.3.1.1 of IEC 60601-2-1:1998 sets limits to X-ray leakage radiation through beam limiting devices (BLDs) in the patient plane in order to reduce the detrimental effects on the patient due to leakage radiation. This clause restr

定价： 228元 / 折扣价： 194 元