R6 Carbon battery.Four-wire armored thermal resistor wiring

　　Electronic enthusiasts provide you with the four-wire armored thermal resistor wiring. The armored thermal resistor is a temperature sensor that uses the characteristic that when the temperature of a substance changes, its resistance also changes to measure temperature. When the resistance value changes, the working instrument displays the temperature value corresponding to the resistance value. It has a smaller diameter than the assembled platinum resistor and is easy to bend. It is suitable for installation in narrow pipelines and special occasions requiring rapid response and miniaturization.

　　The armored thermal resistor is a temperature sensor that uses the characteristic that when the temperature of a material changes, its resistance also changes to measure temperature. When the resistance value changes, the working instrument displays the temperature value corresponding to the resistance value. It has a smaller diameter than the assembled platinum resistor and is easy to bend. It is suitable for installation in narrow pipelines and special occasions requiring rapid response and miniaturization. It can automatically detect gases, liquid media and solid surfaces in the temperature range of -200~600℃, and can be directly connected to secondary instruments with copper wires. Because it has good electrical output characteristics, it can be used as a display instrument. , recorders, regulators, scanners, data loggers and computers provide accurate input values.

　　Working principle of armored thermal resistor

　　Armored thermal resistance uses the characteristic that when the temperature of a substance changes, its resistance also changes to measure temperature. When the resistance value changes, the working instrument displays the temperature value corresponding to the resistance value. The armored thermal resistor is a kind of temperature sensor. It has a smaller diameter than the assembled thermal resistor, is easy to bend, and has good shock resistance. It is suitable for installation in places where the assembled thermal resistor cannot be installed. The WZpK series armored thermal resistor adopts the imported thermal resistor for temperature measurement. The components, therefore, have the advantages of precision, sensitivity, fast thermal response time, stable quality, and long service life.

　　The outer protective sheath of the armored thermal resistor is made of stainless steel and is filled with high-density oxide material insulator. Therefore, the armored thermal resistor has strong anti-pollution performance and mechanical strength, and is suitable for installation in harsh environments.

　　Features

　　The outer protective tube of the armored resistor is made of stainless steel and is filled with high-density metallurgical grade magnesia oxide material insulator. Therefore, it has strong anti-pollution and excellent mechanical strength, and is suitable for installation in harsh environments. Armored thermal resistors are usually composed of armored platinum thermal resistor temperature sensing elements, installation fixtures and wiring devices and other main components. The thermal response time is short and the dynamic error is reduced; the diameter is small and the length is limited;

　　High measurement accuracy;

　　Imported or domestic thin film resistive components, reliable and stable performance;

　　Introduction to thermal resistance two-wire, three-wire and four-wire wiring

　　Detection equipment (temperature controller, pLC input, etc.) connected to the thermal resistor has four terminals: I+, I-, V+, V-. Among them, the I+ and I- terminals are used to provide constant current to the thermal resistor, and V+ and V- are used to monitor the voltage changes of the thermal resistor and detect temperature changes in turn.

　　1. The four-wire system is to lead 4 wires from both ends of the thermal resistor. When wiring, the circuit loop and the voltage measurement loop are independently wired. The measurement accuracy is high and many wires are required.

　　2. The three-wire system is to lead three wires from the thermal resistor. When wiring the pt100 platinum resistor, the reference end of the current loop and the reference end of the voltage measurement loop are one line (that is, the I-terminal and V-terminal of the detection equipment are short-circuited). The accuracy is slightly better.

　　3. The two-wire system means two wires are drawn from the thermal resistor. When wiring the pt100 platinum resistor, the current loop and the voltage measurement loop are combined into one (that is, the I- terminal and V- terminal of the testing equipment are short-circuited, and the I+ terminal and V+ are short-circuited. catch). The measurement accuracy is poor.

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