Temperature measurement and calibration training device
This is a tabletop experimental device used for conducting calibration experiments on the characteristics (linearity), accuracy, and various thermometers commonly used for temperature measurement. The device consists of a heater (ON/OFF switch), a heater tank, an ice box, constant voltage and constant current output terminals, a voltage output display, a Wheatstone bridge circuit, and various resistance terminals, and it comes with eight types of thermometers. Additionally, experiments can be conducted smoothly using the included experimental manual. By using the optional (sold separately) data automatic collection system (VDAS-B), various data can be collected in real-time to a PC (sold separately) and the experimental results can be analyzed.
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basic information
TD400 Specifications Dimensions and Weight: W920 x D500 x H600mm, approximately 41kg Power Supply: AC100V 6A, 50/60Hz Heater Tank: Water capacity approximately 1.5L, maximum experimental temperature 100℃ Voltage Display: ±0.3V (300mV) Constant Current Power Supply: DC 1mA Constant Voltage Power Supply: DC 0.2V (200mV) PRT Simulation: Resistance for PRT 100Ω (0℃), Wiring Resistance 4.7Ω x 4 Voltage Amplifier: Voltage Gain 20 Other Resistors: 10Ω, 100Ω, 1000Ω Operating Environment: Below 2000m altitude, temperature +5℃ to +40℃ (recommended temperature 20℃) *Ambient temperature significantly affects experiments Accessories: Glass thermometers x2, Bimetal thermometer, Gas (vapor pressure) thermometer, NTC thermistor, Pt100 platinum resistance thermometer x2, K-type thermocouples x2, J-type thermocouple x1, Infrared thermometer
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Applications/Examples of results
【Experimental Items】 1. PRT simulation experiment - Effects of wiring length during constant voltage or constant current supply 2. PRT simulation experiment - Effects of output and line resistance in 2-wire, 3-wire, and 4-wire connections 3. Calibration experiment of PRT - Comparison of experimental resistance values and reference resistance values 4. Calibration experiment of glass thermometers - Comparison of measurement values between the thermometer and the reference thermometer 5. Calibration experiment of gas (vapor pressure) thermometers - Comparison of measurement values between the gas thermometer and the reference thermometer 6. Calibration experiment of bimetal thermometers - Comparison of measurement values between the bimetal thermometer and the reference thermometer 7. Characteristics of NTC thermistors (linear) - Comparison of experimental resistance values and reference resistance values 8. Characteristics of J-type and K-type thermocouples (linear) - Comparison of experimental output values and reference thermoelectric voltage values 9. Thermocouple and Seebeck effect experiment - Comparison of experimental output values and reference thermoelectric voltage values 10. Effects of resistance on thermocouple circuits - Output errors when resistance is added in series or parallel 11. Series or parallel connection of thermocouples - Comparison of electromotive force values at different temperatures 12. Delay in temperature measurement - Measurement of the presence or absence of a protective tube using a gas (vapor) thermometer 13. Properties of infrared thermometers - Measurement errors on different surfaces (rough steel and matte black)
Detailed information
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VDAS-B Data Automatic Collection System Custom calculation formula input and layout changes are possible.
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PRT simulation experiment diagram - 2-wire connection
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Electrical resistance measurement using a Wheatstone bridge circuit
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PRT calibration experiment diagram
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Characteristics of J-type and K-type thermocouples (linear) experimental diagram
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Megakemu designs, manufactures, and imports various experimental and practical equipment for universities, junior colleges, technical colleges, high schools, and vocational schools across the country. While the world has made advancements in various fields, it seems that our Earth's environment is being disrupted by ourselves and is approaching its limits. The world is seeking new Japanese technologies that coexist with the Earth's environment.