• TCA-ZT thermal resistance or thermocouple input isolation barrier (smart type) TCA-ZT thermal resistance or thermocouple input isolation barrier (smart type)

TCA-ZT thermal resistance or thermocouple input isolation barrier (smart type)

Item No: DYT12168231

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TCA-ZT thermal resistance or thermocouple input isolation barrier (smart type)

·  1 in 1 out, 1 in 2 out, 2 in 2 out. Suitable for thermal resistance or thermocouple temperature sensors, intrinsically safe input. The settings can be configured. LCD or OLED display. 0/4~20mA output. Terminal supply or DIN rail power supply is available.

·  TCA-ZT is a thermal resistance or thermocouple signal input for hazardous areas in the field. It is isolated and converted to a standard current signal output to a safety zone control system or other instrument.

·  Switch the thermocouple and thermocouple input signals according to different wiring methods. Input signal type or range can be configured via software

·  LCD display or OLED display (optional).

·  Output signal 4~20mA or 0~20mA.

·  The product is powered by a separate DC power supply. Voltage-type magnetic isolation between power supply-input-output.  

Model /Selection Table:


    Model and code


Basic model


     Thermal resistance or thermocouple input isolation barrier (smart)

Special function


     LCD display 


     OLED display 


     Input line fault alarm, sensor fault alarm
     (Not available for RTD or thermocouple input isolation barrier with LCD display)


     Default, no special features

Channel form


     1 in 1 out


     1 in 2 out


     2 in 2 out

Input signal


     Thermal resistance (RTD) or thermocouple (TC)

Output signal






     Other special order (Note 1)

Power supply voltage


     Power supply (terminal) 2030VDC


     Power supply (rail) 2030VDC (Note2)

Service Code


     Product Service Code

   Note 1: Please specify the input signal type and range required by the user when ordering. Otherwise, it will be shipped according to the default setting: Input Pt100, 0~200°C, output is 4~20mA.

   Note 2: For other special specifications, please consult the manufacturer or local agent when ordering, and negotiate the order.
  Note 3: For products with rail supply, please order a dedicated DIN rail.  
   Selection example 
   Example 1: TCA-ZTX11-UA-V1-QC9A...... 1 input and 1 output, thermal resistance or thermocouple input isolation barrier, LCD display, output signal 4~20mA, terminal power supply 20~30VDC.
   Example 2: TCA-ZTF12-UA-V1-QC9A...... 1 input and 2 output, thermal resistance or thermocouple input isolation safety barrier, with input line fault alarm function, output signal 4~20mA, terminal power supply 20~30VDC. 
   Example 3: TCA-ZT22-UA-V2-QC9A...... (2 in 2 out, thermal resistance or thermocouple input isolation barrier, output signal 4~20mA, rail supply 20~32VDC)

   Optional accessories

· Configuration software: CRFW-2000, CRFA-1904

· Calibration interface: CR-2206, FAIF-1904
· Dedicated power supply DIN rail: PSDR-3000 series


Technical data:








    Housing Material / Color

   PC(Polycarbonate)+PPT Material / Black Gray

    Protection level



Environmental conditions:

    Ambient temperature


    Ambient temperature (storage or operation)


    Ambient humidity (operation)

   5~95RH (no condensation)


Input (intrinsically safe):

   Available sensor type (RTD)

   Pt100, Cu50 and other thermal resistance

   Available sensor type (TC)

   K, E, S, B and other thermocouples

   Temperature measurement range

   Range depends on sensor type



   Current output

   4~20mA ;  0~20mA

   Maximum output current


   Current output load

   Adaptive load 0~300Ω (factory default)

   Output ripple

   <10mV p-p

   Output status at sensor failure

   <3.5mA (lower limit) or >21mA (upper limit)


Power supply:

  Rated supply voltage


  Power supply voltage range


  Maximum current consumption

   <45mA (1 in 1 out); <75mA (2 in 2 out); <90mA (3 in 3 out)


General parameters:

   Standard accuracy

   Typical value±0.1%FS

   Zero migration range

   -10~100mV or0~385Ω

   Range migration range

   3.8~100mV or 12.8~400Ω

   Output resolution

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

   Thermocouple input, cold junction compensation error

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

   Thermal resistance input, wire resistance effect

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

   Load change effect


   Temperature drift

   · -10~35 mV range: 0.0005% or 0.6μV (whichever is larger) 
   · -10~75 mV range: 0.0005% or 1.2μV (take the larger one)
    · 10~400Ω range: 0.0015% or 4mΩ (whichever is larger)

   Power-on or storage time drift

    ±2μA (180 days)

   Response time


   Power-on stabilization time


   Maximum withstand voltage

    Input-output-power supply: 2500V AC RMS / 1 minute

   Protection parameters

   · Power-on shock protection, power-on slow start >20ms   

   · Distribution protection, distribution output clamp current 28mA (±4mA)
   · Reverse power supply protection, reverse voltage -30V
   · Output protection, output clamp current 22mA (typical)
   · Port misconnection and surge protection:
   A.The power-input-output between the two ports of the self-loop can withstand the external loop voltage <±24V.       

   B. Input-output-power supply can withstand 2500V RMS/1 minute without damage.       

   C. The short circuit or open circuit formed by the misconnection of the terminal is not damaged.

   Electromagnetic compatibility (EMC)

    in accordance with IEC 61326-1 (GB/T 18268), IEC 61326-3-1

  LCD display or LED backlight indication

   · LCD display: input value and output value

· LED backlight indication: Power on, the product model on the panel is clearly visible through the LED backlight perspective. 

   Applicable occasions

   Installed in a safe place, can be connected with intrinsically safe equipment in Zone 0, Zone 1, Zone 2; IIC, IIB, IIA; T4~T6 danger zone

   Field device suitable for connection

   Thermal resistance or thermocouple temperature sensor, millivolt signal, transmitter or current source signal

   Mounting method

    Horizontal or vertical mounting, can be mounted on standard 35mm DIN rail (or dedicated busbar backplane powered DIN rail)


Wiring parameters:

   Rigid conductor cross section (min/max)


   Flexible conductor cross section (min/max)


   Minimum Conductor Cross Section (AWG))


   Maximum Conductor Cross Section (AWG) 14


   Stripping length


   Connection type

    M3 screw fastening connection

   Screw torque

    Up to0.6Nm


Explosion-proof parameters:

   Maximum safety voltage (Um)


   Maximum output voltage (Uo)


   Maximum output current (Io)


   Maximum output power (Po)


   Maximum external inductance (Lo)


   Maximum external capacitance (Co)




   CE certification

   in line with CE standards

   National Explosion-proof Electrical Product Quality Supervision and Inspection Center (CQST) certification

   [Ex ia Ga] IIC conforms to GB 3836.1, GB 3836.4, GB 3836.20

Product drawing / terminal wiring diagram:


Product Image Details

TCA-ZT thermal resistance or thermocouple input isolation barrier (smart type) 1

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