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optical pyrometers

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Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005925
EISBN: 978-1-62708-166-5
... temperature sensors on-line radiation thermometers optical pyrometers resistance temperature detectors temperature control thermocouples Abstract Abstract Temperature control in heat treating is of paramount importance in maintaining the quality and achieving the desired metallurgical results...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005912
EISBN: 978-1-62708-167-2
... optical fiber preform in a typical induction draw furnace Fig. 1 Optical fiber preform with draw down region shown, highlighting the two components of glass in an optical fiber—core and cladding Fig. 2 Schematic of draw furnace showing furnace temperature pyrometer and insulation...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005920
EISBN: 978-1-62708-167-2
... induction heating, especially with noncontact optical pyrometers. Because inductions systems do have a fast response and plenty of power, using a pyrometer to provide the control signal to a controller requires accurate reading. Glass melting normally is run in a set point mode without a single output power...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005852
EISBN: 978-1-62708-167-2
... an algorithm; it is simpler and more easily implemented. One can use up to five set points to accomplish this, but generally three are the maximum and two are adequate. A closed-loop control mode can be used with an optical pyrometer to provide the feedback. If it is for an application such as bright...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003199
EISBN: 978-1-62708-199-3
... Radiation sensors are noncontact-type temperature sensors used with radiation pyrometers. One type of radiation pyrometer is the optical pyrometer. Radiation sensors respond to radiant energy. They are classified as total-radiation (wide-band) or narrow-band types, depending on the width...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001299
EISBN: 978-1-62708-170-2
... positions, and a means to record at least the front oxide face temperature during the heating cycle. Two-color infrared optical pyrometers are widely used for the latter task, with the output connected to a chart recorder or computer. One word of caution concerning the temperature measured. If the zirconia...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003239
EISBN: 978-1-62708-199-3
... inspection devices include bolometers, thermocouples, thermopiles, and meltable substances, whereas radiometers and pyrometers come under the noncontact category. contact thermographic inspection contact thermometric inspection noncontact thermographic inspection noncontact thermometric inspection...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005924
EISBN: 978-1-62708-166-5
... Energy Monitors and Monitoring of Process Variables Temperature Control through Use of Pyrometers Window of Full Power Output Autotransformer Isolated Winding Transformer Radio-Frequency Coils for Static Heating Coils for Single-Shot Heating Coils for Scanning or Progressive...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003239
EISBN: 978-1-62708-199-3
... inspection devices include bolometers, thermocouples, thermopiles, and meltable substances, whereas radiometers and pyrometers come under the noncontact category. contact thermographic inspection contact thermometric inspection noncontact thermographic inspection noncontact thermometric inspection...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003442
EISBN: 978-1-62708-195-5
... Helium Pycnometry Dilatometry Strain Gages Optical Measurement Moisture Expansion Differential Scanning Calorimetry (DSC) Thermomechanical Analysis Dynamic Mechanical Analysis (DMA) Direct Methods ASTM C 177 ASTM E 1225 ASTM C 518 ASTM E 1530 Thermal Conductivity...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005807
EISBN: 978-1-62708-165-8
...) Installation for selective oxy-fuel gas heating of small-production lots of gears, sprockets, and flanges within size limits of the equipment. A radiation pyrometer is used here to control the heating cycle, but many operations use an electric timer instead. By changing work heads and spindles, equipment can...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006007
EISBN: 978-1-62708-172-6
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003159
EISBN: 978-1-62708-199-3
... ppm/°C ppm/°F °C °F MPa ksi MPa ksi Incoloy 903 and Pyromet CTX-1 N19903 0.03 C, 0.20 Si, 37.7 Ni, 16.0 Co, 1.75 Ti, 3.0 (Nb + Ta), 1.0 Al, 0.0075 B, bal Fe 7.51 4.17 7.47 4.15 7.45 4.14 440 820 1480 215 1310 190 15 45 Incoloy 907 and Pyromet CTX-3 N19907 0.06 C max...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001099
EISBN: 978-1-62708-162-7
... of liquefied natural gas Superconducting systems in power transmissions Integrated-circuit lead frames Components for radios and other electronic devices Structural components in optical and laser measuring systems Low-expansion alloys are also used with high-expansion alloys (65%Fe-27%Ni-5...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006465
EISBN: 978-1-62708-190-0
... camera spatial resolution. High-resolution optical cameras have been used to monitor optical emissions from melt pools, but calibration to achieve a measurement of actual temperature is non-trivial. Point-based measurement of melt pool temperature has also been applied using pyrometers to construct...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006045
EISBN: 978-1-62708-175-7
... is quite efficient and the microwave fields drop below the breakdown value. The surface temperature of the compact was measured with a two-color optical pyrometer. Figure 15 shows an example of a compact of CP titanium powder CIPed into the approximate shape of a small in-line valve body ( Fig. 15b...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003992
EISBN: 978-1-62708-185-6
... be checked occasionally with an optical or probe-type pyrometer as the pieces are removed from the furnace. This practice not only provides a check on the accuracy of the furnace controls, but also ensures that the stock is reaching the furnace temperature. Cooling from the forging operations should also...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003317
EISBN: 978-1-62708-176-4
... by an optical pyrometer will deviate from the actual temperature by a greater amount. The emissivity of a heated specimen will always be less than 1, and the apparent temperature will, therefore, be less than the desired test temperature. Emissivity can be influenced by surface roughness, the spectral...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002360
EISBN: 978-1-62708-193-1
... per square centimeter per second between the specimen being measured and a black body at the same temperature. Thus, as the emissivity of a material decreases from 1, the apparent temperature as measured by an optical pyrometer will deviate from the actual temperature by a greater amount...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005197
EISBN: 978-1-62708-187-0
... process (for ductile iron), and radiation losses from the pouring ladles. Iron temperature can be measured by optical pyrometers, immersion thermocouples, and/or continuously recording radiamatic instruments. Carbon and silicon concentrations are most important in the control of iron properties...