Infrared pyrometer for temperature measurement of objects , emissivity of which depends on wavelength and time
نویسندگان
چکیده
The multiband MBP 98A pyrometer developed for non-contact temperature measurement of objects with unknown and wavelength-dependent emissivity has been presented in this paper. The pyrometer was designed using single thermoelectrically cooled PbS detector of spectral band of 1-2.5 Ilm and 8 narrow-band optical filters. It enables temperature measurement of objects at temperature within a range of 500°C-1200°C and a speed of 75 Hz. It can be used for controlling various industrial-technological processes as well as in research works for testing of classic singleband pyrometers in temperature measurement of objects whose emissivity depends on the wavelength and time.
منابع مشابه
Application of neural fuzzy network to pyrometer correction and temperature control in rapid thermal processing
Temperature measurement and control are two difficult problems in the rapid thermal processing (RTP) system. For many applications such as rapid thermal processing chemical vapor deposition (RTCVD) [1] and rapid thermal oxidation (RTO) [2], large changes in wafer emissivity can occur during film growing, leading to erroneous temperature measurements with a single wavelength pyrometer. The error...
متن کاملBrake disc surface temperature measurement using a fiber optic two-color pyrometer
A fiber optic two-color pyrometer was developed for brake disc surface temperature measurement. The two-color pyrometer is composed of a fluoride glass fiber and two HgCdTe detectors equipped with bandwidth filters. The two-color pyrometer allows the measurement of brake disc temperature in the 200-800 °C range with a time resolution above 7 μs. Calibration formula for the signals obtained usin...
متن کاملNanosecond-time-resolution thermal emission measurement during pulsed excimer-laser interaction with materials
A nanosecond-time-resolution pyrometer has been developed for measuring the transient surface temperature of a solid material heated by pulsed excimer-laser irradiation. Fast germanium diodes are employed to capture the transient thermal emission signals in the wavelength range between 1.2 and 1.6 lm. The surface temperature is derived from the measured spectral thermal emission. The directiona...
متن کاملTemperature measurement of high-energy-density matter generated by intense heavy ion beam
Intense heavy ion beams are an excellent tool to create large-volume samples of high energy density (HED) matter with fairly uniform physical conditions. Experimental study of matter under extreme conditions of density, temperature and pressure is of considerable interest to fundamental research in the fields of plasma physics, atomic physics, astrophysics, geophysics as well as for the inertia...
متن کاملUncertainty Analysis of Infrared Thermography in Convective Heat Transfer
Infrared thermography is the preferred choice in many industrial processes for thermal diagnostics, condition monitoring, and non-destructive testing. However, the inherent uncertainty of surface emissivity affects the accuracy of temperature measurement by infrared thermography. In this paper a comprehensive experimental investigation was conducted to assess the uncertainty of infrared thermog...
متن کامل