Infrared thermometers for chemical industry applications:
In the petrochemical industry, refineries use temperature display systems in routine preventive maintenance procedures. These procedures include monitoring of the furnace process and confirmation of thermocouple readings. In furnace process monitoring, infrared displays are used to detect the percentage of carbon build-up on the heated surface tubes. This build-up, called coking, leads to higher ignition rates in the furnace and also to higher tube temperatures. This high temperature condition reduces the life of the tubes. This is because this coking prevents the product from absorbing heat evenly from the tube. When using an infrared pyrometer we will find that the surface temperature of the tube in the coking area tends to be higher than the surface temperature of the tube in other areas.
The two-colour fixed pyrometer principle of operation guide can also be used for preventative maintenance:
With a portable heat display system, maintenance personnel can identify potential or existing problems. Examples include overheated engine coil windings, tightly plugged cooling fins on a transformer, poor capacitor contacts, and heat build-up in the cylinder head of a compressor. Any problem that arises is accompanied by an increase in temperature, or a temperature profile that is very different from the surrounding temperature, so that it can be localised with a portable heat display system. In most cases, the problem can be detected and promptly corrected before a process stop is required.
Two-colour infrared thermometer in the plastics industry applications:
In the plastics industry, infrared thermometers are used to avoid product staining, to measure dynamic objects and to measure high-temperature plastics. In the process of blown film ejection, temperature measurements to adjust to heating and cooling can help maintain the integrity of the plastic's tension and its thickness. During the ejection of blown film, sensors help control the temperature to ensure the thickness and homogeneity of the product. During sheet extrusion, the sensors allow the operator to adjust the heaters and cold rolls to be extinguished to ensure the quality of the product.
