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as united states moves from emergency to recovery mode, here are a few things that are important to get back to normal. we are a rapidly growing provider of equipment and tools to execute ppe management, n95 filtration systems, safety and other specialized products for temporary surge in demand.

assist is the official source for specifications and standards used by the department of defense. this site provides free public access to most of the technical documents. it will always have the most current information. over 111,000 technical documents and over 189,000 pdf files are associated with over 82,000 of the indexed documents.

a thermostat, also known as a thermostatic switch, is an electronic device that changes state in response to a change in temperature. they are commonly used to turn lights on and off, control motors, and to start and stop certain processes.

a thermocouple is a device that measures the temperature of an object by measuring the voltage difference between two different metals or alloys. this voltage difference results from the slight electrical resistance that changes when the two materials are separated or brought together by the thermocouple.

the thermocouple reacts to a change in temperature by means of a temperature-dependent electrical potential or thermoelectric voltage. this thermoelectric voltage is measured between a hot junction and a cold junction. the distance between the two junctions determines the level of temperature between the two junctions.

the method is divided into two stages: 1) contact, 2) separation or thermoelectric voltage measurement. in contact, the hot and cold junctions must touch one another for a precise reading to be obtained. this is the case when measuring the temperature of an object. temperature is the ratio of heat flow to resistance. the two junctions are connected to a measuring instrument. this instrument measures the voltage between the hot and cold junctions.

these thermostatic switches change the states of devices in response to temperature; they can be found in everything from coffee makers to industrial furnaces. thermostats are typically controlled by a set of mechanical or electronic components that react to changes in the temperature of the heat source.
the stepper motor is a type of electrical motor that consists of a set of mechanical, electromechanical or electronic control elements that control the number of mechanical steps taken by the rotor or the number of electrical pulses generated in a servo. these control elements are driven by coded information about angular rotation that can be given in digital or analogue form.
the american national standards institute (ansi) is a nonprofit professional association dedicated to elevating the profession of standards development by providing a forum for the interchange of ideas on developing, using, and applying standards; and by providing a forum for the advancement of related industries.
the us national fire protection association (nfpa) is a global self-funded nonprofit organization devoted to eliminating death, injury, property and economic loss due to fire, electrical and related hazard. nfpa delivers knowledge and information through more than 300 consensus codes and standards, research, training, education, outreach and advocacy; and by partnering with others who share an interest in furthering the nfpa mission. nfpa is an ansi accredited organization with a full, open, and consensus-based standards development process. as part of its commitment to enhancing public safety, nfpa provides free online access to its codes and standards.

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