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Thursday 06 February 2020
Posted in Thermal Imaging by Pyrosales

What is a Thermometer?

Infrared thermometers are a subset of devices known as “thermal radiation thermometers”. Infrared thermometers, also known as pyrometers or radiation thermometers, are non contact thermometers, which measure the temperature of a body based on its emitted thermal radiation Infrared thermometers are also great for checking surface temperature, however, they do not measure the internal temperature of an object. Infrared thermometers are extremely fast, typically giving a reading in a fraction of a second, or the time it takes for the thermometer’s processor to perform its calculations.

What are the Origins of the Thermometer?

Santorii is regarded as the inventor of the thermometer, for he published the earliest account of a thermometer in 1612. Gabriel Fahrenheit invented the first mercury thermometer in 1714.Infrared Energy origins are from Sir William Herschel, an astronomer, who was credited with the discovery of infrared energy in the 1800’s. Knowing that sunlight was made up of all the colors of the spectrum, Herschel wanted to explore the colors and their relationship to heat. He devised an experiment using a prism to spread the light into the color spectrum and thermometers with blackened bulbs to measure the temperatures of the different colors. Herschel observed an increase in temperature from violet to red and observed that the hottest temperature was actually beyond red light. Herschel termed the radiation causing the heating beyond the visible red range “calorific rays.” Today, it is called “infrared” energy. As times pass numerous versions were created until the current day version of a infrared pyrometer exists.

How does a Thermometer work?

Infrared thermometers measure temperature from a distance. This distance can range between miles or a fraction of an inch. Infrared thermometers are often used in circumstances where other sorts of thermometers are not practical. For example if an object is very fragile or dangerous to be near, an infrared thermometer is a good way to get a temperature from a safe distance. Infrared thermometers work based on a phenomenon called black body radiation. Anything at a temperature above absolute zero has molecules inside of it moving around. The higher the temperature, the faster the molecules move. As they move, the molecules emit infrared radiation, a type of electromagnetic radiation below the visible spectrum of light. As they get hotter, they emit more infrared, and even start to emit visible light. That is why heated metal can glow red or even white. Infrared thermometers detect and measure this radiation. Infrared light works like visible light it can be focused, reflected or absorbed. Infrared thermometers usually use a lens to focus infrared light from one object onto a detector called a thermopile. The thermopile absorbs the infrared radiation and turns it into heat. The more infrared energy, the hotter the thermopile gets. This heat is turned into electricity. The electricity is sent to a detector, which uses it to determine the temperature of whatever the thermometer is pointed at. The more electricity, the hotter the object is.

Who uses Thermometers?

The applications of use for infrared thermometer is quite extensive. They are frequently used in industrial processes, the professional sector and in particular to monitor mains supply units or to measure the temperature of components in motors or machines. The Glass industries, Electrical industries use many forms of the thermometers. The Medical sector also uses many forms in hospitals to in peoples own homes.

Thermometer that Pyrosales is offering.

Pyrosales is a distributor of TESTO products which include a wide range of thermometers.

The two latest thermometer for industrial usage are the Testo 835-T1 and 835-T2.

Testo 835-T1: This practical infrared thermometer testo 835 t-1 offers maximum safety and precision when measuring the temperature of smaller objects from a medium distance, e.g. monitoring wall temperature, troubleshooting in heating and air conditioning systems, or the quality control of industrially manufactured products.

 Checking the function of underfloor heating

Temperature measurement of underfloor heating when it is installed or when maintenance or servicing is being carried out. Ensuring the underfloor heating is functioning properly by measuring the temperature at various points on it.

Advantages of the testo 835-T1:

  • Fast, easy (non-contact) checking of underfloor heating
  • Fast saving and documentation of data for later report writing
  • Clear marking of the measuring range by 4-point laser

Checking switch cabinets, fuses and fitted cables

Temperature measurement of electrical installations when they are installed or when maintenance or servicing is being carried out. Ensuring the electrical components are functioning properly by measuring the temperature at various points on them.

Advantages of the testo 835-T1:

  • Fast, easy, non-contact checking of electrical components
  • Fast saving and documentation of data for later report writing
  • Clear marking of the measuring range by 4-point laser

Checking ventilation components

The testo 835-T1 is ideally suited for measuring the temperature of ventilation components, for instance at duct outlets and on ventilation ducts. Assessing the ventilation duct’s insulation and ensuring the ventilation system is functioning properly by temperature measurement.

Advantages of the testo 835-T1:

Measuring of ducts and outlets at a great distance

  • Easy scanning of ducts
  • Fast saving of measuring values in the instrument
  • Comparison with previous measuring values to identify any changes

Surface temperature measurement on bearings and gear mechanisms

Non-contact surface temperature measurement on industrial production machines for preventive maintenance. Especially measurement of bearings and gear mechanisms to prevent superheating. Preventing production downtime due to machines failing as a result of superheating.

Advantages of the testo 835-T1:

  • Fast and precise measurement from a safe and long distance
  • Clear marking of the measuring range by 4-point laser
  • Possibility of monitoring and logging the temperature profile by long-term measurement (only in combination with EasyClimate PC software, a free download via testo.de)

Surface temperature measurement for quality control

Product quality assurance for various industrially manufactured products: e.g. in the production process to determine whether the required temperature has been reached for further processing of the product, or when cooling products.

Advantages of the testo 835-T1: Fast and precise measurement from a safe and long distance

  • Integrated emission level table and automatic determination of the emission level enable a rapid selection of the right emission level for various surfaces
  • Clear marking of the measuring range by 4-point laser
  • Possibility of monitoring and logging the temperature profile by long-term measurement (only in combination with Easy Climate PC software, a free download via testo.de)

Measurement of heat distribution in radiators

The testo 835-T1 is ideally suited for measuring the temperature of radiators when they are installed or when maintenance or servicing is being carried out. Ensuring the radiator is functioning properly by measuring the temperature at various points on it.

Advantages of the testo 835-T1:

  • Fast, easy, non-contact checking of radiators
  • Fast saving and documentation of data for later report writing
  • Clear marking of the measuring range by 4-point laser

 

Testo 835-T2: Measure precise temperatures of up to 1500 °C from a safe distance thanks to its extended temperature measuring range, testo 835T2 can be used virtually all sectors of trade and industry: e.g. monitoring wall temperature and, inspecting air conditioning and ventilation systems, the maintenance of industrial systems or the quality control of industrially manufactured products.

Product temperature monitoring for quality control in glass, ceramics and metal industries up to 1,500°C

The testo 835-T2 is ideally suited for product quality assurance for various industrially manufactured products: e.g. in the production process to determine whether the required temperature has been reached for further processing of the product, or when cooling products.

Advantages of the testo 835-T2:Fast and precise measurement from a safe and long distance

  • Integrated emission level table and automatic determination of the emission level enable a rapid selection of the right emission level for various surfaces
  • Clear marking of the measuring range by 4-point laser
  • Possibility of monitoring and logging the temperature profile by long-term measurement (only in combination with Easy Climate PC software, a free download via testo.de)