• MT4182 Intelligent two-wire temperature transmitter (isolated) MT4182 Intelligent two-wire temperature transmitter (isolated)

MT4182 Intelligent two-wire temperature transmitter (isolated)

Item No: DYT12168179

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MT4182 Intelligent two-wire temperature transmitter (isolated)

· Thermal resistance (RTD) or thermocouple (TC) input, 4~20mA output. Electrical isolation between input and output, PC or phone configuration.
· MT4182 intelligent two-wire temperature transmitter, which can convert different types of input signals into standard 4~20 mA output signals.
· Input signal: RTD, thermocouple (TC), resistance (Ω), voltage signal (mV).
· The input signal is electromagnetically isolated from the output 4~20mA loop current signal.
· Two-wire transmission mode (The power supply does not output the signal as a common two wires).

Model / selection table:


     Model and code




     Intelligent Two-wire Temperature Transmitter (Isolated)

     Service Code


     Product Service Code

    Please specify the product model, input signal type and range when ordering. Otherwise, it will be shipped according to the default setting. The input is Pt100, 0~200°C, and the output is 4~20mA.
    Selection example 
    MT4182-QC9A    ......Intelligent two-wire temperature transmitter (factory setting: 3-wire, Pt100 thermal resistance, 0~200°C).
    Optional accessories 
    · USB adapter cable and software:
      1. Applicable to USB adapter cable configured by PC: R-V1.3 software: Yutong R series control software V1.3
      2. Applicable to USB adapter cable configured by mobile phone: R-V1.3.2 Software: Yutong R series control software V1.3.2    

Technical data:

Product structure:

    Shell size

    Φ46×20 (mm)

    Housing Material / Color

    PC (Polycarbonate) / Lake Blue

    Whole machine weight

    About 40 grams

    Degree of protection

    IP00 / IP54 (determination of sensor protection level)

    Shock-resistant vibration

    4g/2 150Hz


Environmental conditions:

    Ambient temperature


    Ambient temperature (storage or operation)






    Input signal

    Thermal resistance (RTD), thermocouple (TC), resistance (Ω), voltage signal (mV)

    Measurement range

    Depends on sensor connection and input signal type

    Input signal type / measuring range

    See the table below


Sensor type and measuring range table:

   Sensor type (index number)

   Measurement range

   Minimum range

     error (larger)

   Resistance signal (Ω)



     10mΩ or 0.08%

   Pt100 thermal resistance



     0.2℃ or 0.08%

   Type K thermocouple



     0.5℃ or 0.08%

   Type E thermocouple



     0.5℃ or 0.08%

   Type S thermocouple



     1.4℃ or 0.08%

   Type B thermocouple



     2℃ or 0.08%

   Type J thermocouple



     0.5℃ or 0.08%

   Type T thermocouple



     0.5℃ or 0.08%

   Type R thermocouple



     1.4℃ or 0.08%

   Type N thermocouple



     1℃ or 0.08%

   Voltage signal(mV)






    Current output


    Alarm signal

    Overrange lower limit, 3.8mA; overrange upper limit, 20.5mA

    Load resistance

    Max (power - 9V) / 22mA; minimum, short circuit

    Output ripple

    <10mV p-p


Power supply:

    Output loop supply voltage

    9~42VDC (reverse connection protection)


General parameters:

    Standard accuracy

    Typical values±0.1%FS
    (See temperature sensor type, range and measurement error table)

    Thermocouple input cold junction compensation error

    0.5~1°C (compensation range -15~+75°C)

    Thermistor input wire resistance effect

    Thermal resistance three-wire input (≤10Ω/line), <±0.005 %/Ω

    Output resolution

    <3.8~100mV or 12.8Ω~400Ω range, 1μA

    Load change effect


    Thermistor input wire resistance effect 

    Thermal resistance three-wire input (≤10Ω/line), <±0.005 %/Ω

    Temperature drift (Note)

    ·-10~75 mV range: 0.0005% or 1.2μV (whichever is larger) 
    · 10~400Ω range: 0.0015% or 4mΩ (whichever is larger)

    Zero point migration range at RT input


    Zero shift range for thermocouple input

    -10~95 mV

    Output current zero migration range


    Output current resolution

    3.8~100mV or 12.8~400Ω

    Power change impact


    Response time

    Thermocouple 1S, thermal resistance 1.5S

    Start delay time


    Electrical isolation

    Between input and output: 2500V AC RMS / 1 minute

    Long-term stability

    0.1 ° C / year or 0.05% / year, take the larger

    Electromagnetic compatibility (EMC)

    In accordance with IEC 61326-1 (GB/T 18268)

    LCD display (model MT182D or MT182DS)

    Input value and output value

    Field device suitable for connection

    Thermal resistance or thermocouple temperature sensor, resistance signal, millivolt signal

    Mounting method

    Mounted in the standard junction box of the temperature sensor head (according to DIN 43 729 Form B)



Input drift + output drift = total drift, the effect of ambient temperature change of 1 °C.
The input drift is the part of the input signal drift below zero. For example, Pt100, the zero point of 0~100°C is 100Ω, the drift is input drift; the output value is 38.5Ω, and the drift is output drift. The total drift index is: 138.5X0.0015%=2mΩ, less than 4mΩ, taking 4mΩ, and the relative value of temperature drift is: 4mΩ/38.5Ω≈0.01%FS/°C.


Wiring parameters:

   Rigid conductor cross section (min/max)


   Flexible wire cross section (min/max)


   Stripping length


   Connection type

    M3 screw fastening connection

   Crew torque

    up to 0.8Nm



    CE certification

    Meet CE standards

Product diagram / terminal wiring diagram:



Product Image Details

MT4182 Intelligent two-wire temperature transmitter (isolated) 1

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