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    K type Thermocouple with Transmitter

    K type thermocouple assembles with protection head and stainless steel thermowell, built-in small transmitter. It converts temperature to 4-20mA standard signal, and outputs to display instrument or DCS system in control room. Transmitter adopts silicone rubber seal structure, save extension wire, good anti-interference ability. Measuring temperature range 0~1000 ℃.
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    Delivery date: 6-12 days

    K type thermocouple built-in transmitter can directly provide accurate input signal of temperature changes for display instruments, recording instruments, signal conditioners, scanister and computer.


    1. Thermocouple temperature range chart

    Type of sensing element Temperature range
    E type 0~400℃
    K type 0~400℃
    S type 600~1600℃
    B type 800~1800℃
    N type 0~400℃

    2. Transmitter parameter chart

    Input Thermocouple: K, E, B, S, T, N
    Output 4-20mA
    Intrinsic error ±0.5%
    Transmission mode Two wire
    Supply voltage DC 12~35V, rated voltage DC 24V
    Load resistance 0~600Ω (DC 24V), rated load 250Ω
    Temperature influence ≤0.05/1℃
    Working environment Temperature: -25~+80℃,humidity: 5%~95%, mechanical vibration: f≤55Hz, amplitude<0.15mm

    3. Meter and protection head type
    RTD sensor meter and protection head type

    4. Selection chart

    Type of sensing element Meter type Installing form Mode of connection Thermowell diameter Thermowell total length
    S1: E type;
    S2: K type;
    S3: S type;
    S4: B type;
    S5: T type;
    S6: J type;
    S8: N type;
    P0: No meter;
    P2: Meter with digital display;
    P4: Intelligent meter with digital display
    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: Rectangular movable flange;
    I6: Taper thermowell and fixing thread
    C3: Standard waterproof protection head;
    C4: Explosion-proof protection head
    D0: Φ16mm 300~2150mm

    Note: The sensing element is sheath thermocouple, thermowell material is stainless steel, and circuit adopts non-isolated type. When ordering products, write the thermowell insertion depth l and the corresponding temperature range for output 4~20mA signal you need.

    Tips: How to connect thermocouple and DCS

    1. Thermocouple uses extension wire and there are nodes in the middle, but corresponding compensating cable must be used and directly connected to DCS thermocouple module. It is necessary to reduce nodes as far as possible so as to reduce interference. In addition, DCS configuration should select corresponding thermocouple model and compensating method as well.
    2. Thermocouple uses transmitter (temperature transmitter) in the field and transforms into 4~20mA standard signal. Then, connect it with the indoor safety grid (if necessary, such as chemical environments) and connect with DCS standard analog quantity card (general AI card). It is noteworthy that compensating cable is necessary from thermocouple to transmitter. Transmitter needs to set compensating method, thermocouple type and calibration range, and DCS should set range and signal type.
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