How to determine the tungsten wire

Are you interested in how to determine the temperature of the tungsten wire from the supplier AvecGlob? Here you will find the necessary information on this topic /

Initial data

Measurement of the temperature of a tungsten wire without resorting to the use of expensive measuring equipment is necessary in order to establish the limit of glow of the wire, and to compare the data with the temperature of the atmosphere or gas that is in the measured volume.

The value of the electrical resistivity of the wire can be used as an index of temperature, especially since the tungsten wire does not have an ultrahigh temperature coefficient, and the length of the filament is known.

As for the thermocouple wire made of tungsten, there are metal resistance tables for it depending on the temperature.

If the wire does not conduct electricity at an unknown temperature, then its brightness and / or color of the electrically or optically damped lamp thread is the criterion for the temperature rating (the principle of a conventional optical pyrometer). Tungsten filaments have a brightness temperature slightly below the true temperature. Consequently, their color temperature is slightly higher than the true temperature, for this emissivity is spectrally tilted in the blue direction with respect to the spectrum of the blackbody. The basis for subsequent calculations or verification by experimental tables is the tungsten resistance, which is clearly tied to the temperature of the filament

Sequence

For tungsten wires made of chemically pure tungsten, it is recommended as follows:

Calibration of the filament under various stresses applied to it (a temperature sensor is used);

Testing with the real color of the filament using an optical pyrometer;

Check the result from the experimental stress diagram.

The main factor here is the degree of chemical purity of tungsten. In addition, the exact length and diameter of the wire can be difficult to measure if pre-manufactured spiral threads are used.

Supplier — AvecGlob Company — offers at affordable prices from the manufacturer in a wide range of tungsten wire of various diameters. The supplier guarantees the timely delivery of products to any address specified by the consumer.

Experimental tables

Supplier — AvekGlob Company — offers to purchase various profiles of wire, which is made of tungsten and tungsten alloys. Products can be bought at a price formed on the basis of European and world standards of production. Implementation is possible in bulk and retail, for regular customers, a flexible system of discounts operates.