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Clamp -type platinum resistance temperature sensor

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    Clamp -type platinum resistance temperature sensor

    Hoop the diameter size determined according to the customer request.
    Product features:
    Usually use platinum resistance temperature sensor have PT100, resistance temperature coefficient is 3.9 x 10-3 / ℃, 0 ℃ for 100 Ω when resistance, resistance rate of 0.3851 Ω / ℃. Platinum resistance temperature sensor higher accuracy, good stability, application temperature range, is in low temperature area (a kind of the most commonly used temperature detector, not only widely used in industrial temperature measurement, and be made into all kinds of standard thermometer.
    IEC751 according to international standards, the temperature coefficient of TCR = 0.003851, Pt100 (R0 = 100 Ω), Pt1000 (R0 = 1000 Ω) for unified design type platinum resistance.
    Precision and level:
    A: ± (0.15 + 0.002 t);
    1/3 DIN B: ± (0.1 + 0.0017 t)
    1/10 DIN B: ± (0.03 + 0.0005 t)
    0 ℃ when resistance deviation:
    A: + /-0.06 Ω;
    1/3 DIN B: + /-0.04 Ω;
    1/10 DIN B: + /-0.01 Ω;
    Sensor structure:
    Two wire:
    Sensor resistance change value and interconnects resistance to form a sensor output values, because the wires resistance of the actual bring additional error measuring value on the high side, used for measuring precision demand is not high occasions, and the length of the wire shoulds not be too long.
    Three wire:
    The use of three wire will reduce lead resistance bring additional error and industrial typically use the three wire by law.
    Four wire:
    When measuring resistance value is very small, the resistance of the test line may be introduced into obvious error, a four-wire measurement with two additional test line to provide constant current, the other two test line the unknown resistance measurement of the voltage drop and voltmeter input impedance in high enough, under the condition of current almost doesn't flow through the voltmeter, which can accurate measurement of the unknown resistance of the pressure drop, calculated resistance value.
    Basic structure:
    Adopt stainless steel tube or copper aluminum tubes encapsulation, filled with internal heat conductivity, insulation materials, waterproof, shockproof excellent performance, suitable for liquid, gas, refrigeration, and various environmental temperature measurement, is the most widely application scope of the sensor.
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