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    Thermocouple, E type, Sheath

    E type thermocouple has the highest thermoelectric force and sensitivity in base metals. Sheath thermocouple have shielded thermocouple wire of common length 500mm and sheath diameter Ф3~Φ8mm, with flexibility, high pressure resistant, fast thermal response time and long operating life. E type thermocouple can directly measure the temperature of liquid, vapor, gas medium and solid surface in the range of 0~700 ℃ in various production processes.
    This product has a minimum quantity of 2
    Free Shipping Worldwide
    Delivery date: 6-12 days

    As a temperature sensor, thermocouple is usually used with display instruments, recording instruments and signal conditioners. Sheath thermocouple also can be used as a temperature sensing element for assembly thermocouple.

    1. S/E/K/J/T type thermocouple temperature range and accuracy chart

    Category Type of sensing element Sheath diameter Normal working temperature Highest working temperature Allowable deviation Δt
    Measuring range Permissible deviation
    Platinum Rhodium 10 - Platinum S type ≥Φ3mm 1100℃ 1300℃ 0~1300℃ ±2.5℃ or ±0.75%t
    Nickelchromium - Copper nickel E type ≥Φ3mm 600℃ 700℃ 0~700℃ ±2.5℃ or ±0.75%t
    Nickel chromium - Nickel silicon K type ≥Φ3mm 800℃ 950℃ 0~900℃ ±2.5℃ or ±0.75%t
    Iron - constantan J type ≥Φ3mm 500℃ 600℃ 0~600℃ Not specified
    Copper - Copper nickel T type ≥Φ3mm 350℃ 400℃ <-200℃ Not specified
    -40~350℃ ±1.0℃ or ±0.75%t

    2. Thermal response time of thermocouple

    Sheath diameter (mm)

    Thermal response time (s)
    Shell type Insulation type
    2.0 0.4 0.5
    3.0 0.6 1.2
    4.0 0.8 2.5
    5.0 1.2 4.0
    6.0 2.0 6.0
    8.0 4.0 8.0

    3. Thermocouple wire structure chart
    Thermocouple wire structure chart
    4. Selection chart

    Branch number Installing form Mode of connection Working end form Multipoint type Additional device Sheath diameter Sheath length
    B1: Single branch;
    B2: Double branch
    I1: No fixed device;
    I2: Fixed card sets of thread joint;
    I3: Movable card sets of thread joint;
    I4: Fixed card sets of flange;
    I5: Movable card sets of flange
    C0: Simple terminals;
    C3: Standard waterproof protection head;
    C4: Explosion-proof protection head;
    C5: Standard plug;
    C6: Aviation plug;
    C7: Handheld;
    C8: Small waterproof protection head;
    C9: Direct lead wire
    W1: Insulation type;
    W2: Shell type;
    W3: Open end type
    M3: 3 points;
    M4: 4 points;
    M5: 5 points;
    M6: 6 points
    S: Sanitary chuck;
    H: Heat collector
    D3: Φ3;
    D4: Φ4;
    D5: Φ5;
    D6: Φ6;
    D8: Φ8
    Φ3: 50~15000mm;
    Φ4: 50~10000mm;
    Φ5: 50~4000mm;
    Φ6: 50~2000mm;
    Φ8: 50~1000mm

    5. Thermocouple installation diagram
    Thermocouple installation diagram
    Tips: How to select and connect extension wire?
    Extension wire is a cheap opened thermocouple which is of the same model with field thermocouple. Its property is basically consistent with standard thermocouple. Model of field extension wire must be consistent with the installed thermocouple. And the specific model can be found from the surface of extension wire by distinguishing color of insulated leather of protective bush within extension wire. If model of extension wire is not correct, there will be errors of temperature measurement. If K type thermocouple is connected with E type extension wire, temperature displayed in the control room will be higher. In a similar way, if E type thermocouple is connected with K type extension wire, the displayed temperature will be lower.

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