The word 'pyrometer' is derived from the Greek words 'pyro'
The first pyrometer was invented by a potter to measure the temperature of his kiln. Development of the Brightness Pyrometer and the Ratio Pyrometer then followed. Today the primary types of pyrometers in use are Optical Pyrometers, Resistance Pyrometers and Radiation Pyrometers.
An optical pyrometer is constructed with an optical system and a detector. Every heated object undergoes a change in colour and brightness and emits small amounts of radiation, about 0.4 to 0.7 microns. The optical pyrometer determines the temperature of the hot object by using colour matching. Another variation of the optical pyrometer is determining temperature of the filament by varying strength of current to match the colour of the detector filament with the one being measured. Optical pyrometers require temperature calibration.
A resistance pyrometer (RTD) determines temperature by measuring the change in resistance of the heated materials electricity. This type of pyrometer is used when the object of temperature measurement cannot be used. These pyrometers require RTD calibration every couple of years or whenever they may function improperly.
Radiation pyrometers use the concept of infrared radiation for temperature measurement. The pyrometer senses, records and compares the temperature of an object from the radiation it gives off. Heat-sensitive elements such as a thermocouple, a device that produces an electric current when part of it is heated, are used. The current generated in the thermocouple due to the heated object operates a dial that indicates temperature. Periodic thermocouple calibration is required to maintain the accuracy of these pyrometers.
Different types of pyrometers are used for different temperatures and applications. The optical systems also vary accordingly. Pyrometers find applications in many industries but are primarily used for electrical testing. They help read the heat on power meters ensuring that the electrician or handler is safe from burns. This tool allows the person to avoid any contact whatsoever with the object being measured.
Hydraulic universal testing machines have very high accuracy requirements.
The hydraulic system is the power drive mechanism of the tensile testing machine.
The specific application of the electronic universal testing machine in the automobile manufacturing process: The electronic universal testing machine needs to be used for automobile parts.
Wave soldering refers to the molten solder (lead-tin alloy), sprayed by electric pump or electromagnetic pump into the solder wave required by the design, can also be formed by injecting nitrogen into the solder pool, so that it is pre-loaded The printed board of the component realizes the soft soldering of the mechanical and electrical connection between the solder end or the pin of the component and the pad of the printed board through the solder wave.
The frequency converter is a power control equipment that uses frequency conversion technology and microelectronics technology to control AC motors by changing the frequency of the motor's working power supply.
Electronic universal testing machine is a necessary equipment to control the quality of products.
The calibration operation of the electronic universal testing machine is still relatively unfamiliar to friends who use it for the first time.
Selective wave soldering defects and their prevention.
Testing machine, broadly speaking, is an instrument that verifies the quality or performance of a product or material according to the design requirements before it is put into use.
The tensile force is not an accurate value after being measured by the testing machine, and subsequent calculations are required to get the desired value.
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