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Introduction:
Type J thermocouple bare wire is a commonly used thermocouple type
used for temperature measurement and control. Iron-copper-nickel
thermocouple (J-type thermocouple) is also called iron-constantan
thermocouple. The nominal chemical composition of its positive
electrode (JP) is pure iron.
The negative electrode (JN) is a copper-nickel alloy, often vaguely
called constantan. Its nominal chemical composition is 55% copper
and 45% nickel, as well as a small but very important amount of
cobalt, iron, manganese and other elements. Although it is called
Constantan, but is different from nickel-chromium-constantan and
copper-constantan, so it cannot be replaced by EN or TN.
Iron-Constantan thermocouples cover the measurement temperature
range from -210 to 1200°C, but are typically used in the
temperature range 0-750°C.
J-type thermocouple bare wire is widely used in industrial control
fields, including heating equipment, furnace temperature monitoring
and heat treatment processes. It is also widely used in
environmental monitoring, such as weather stations, greenhouses and
warehousing environments. In scientific research and laboratories,
J-type thermocouple bare wires are often used to measure sample
temperature and conduct thermodynamic experiments.
One of the advantages of Type J thermocouple bare wire is its corrosion resistance, enabling temperature measurement in some humid and corrosive environments. In addition, J-type thermocouple bare wire has fast temperature response capability and can quickly respond to temperature changes.
Characteristic:
Advantage:
Relevant specific parameters:
ASTM | ANSI | IEC | DIN | BS | NF | JIS | GOST |
(American Society for Testing and Materials) E 230 | (American National Standard Institute) MC 96.1 | (European Standard by the International Electrotechnical Commission 584)-1/2/3 | (Deutsche Industrie Normen) EN 60584 -1/2 | (British Standards) 4937.1041, EN 60584 - 1/2 | (Norme Française) EN 60584 -1/2 - NFC 42323 - NFC 42324 | (Japanese Industrial Standards) C 1602 - C 1610 | (Unification of the Russian Specifications) 3044 |
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Specific application areas:
Q&A:
What is the temperature range of J-type thermocouple bare wire?
Answer: The temperature range of J-type thermocouple bare wire is
usually between -40°C and 750°C.
What are the advantages of J-type thermocouple bare wire?
Answer: J-type thermocouple bare wire has the advantages of wide
application, corrosion resistance and fast response.
What applications are J-type thermocouple bare wire suitable for?
Answer: J-type thermocouple bare wire is suitable for applications
such as industrial control, laboratory research, and HVAC systems.