• DSA-AO Output safety barrier DSA-AO Output safety barrier

DSA-AO Output safety barrier

Item No: DYT12168122

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DSA-AO Output safety barrier

1 in 1 out, 2 in 2 out. 0/4~20 mA intrinsically safe output. Support for HART adoption. Terminal supply or DIN rail power supply is available.

· DSA-AO is suitable for the connection between the control system output signal and the intrinsically safe circuit. After isolation, it outputs standard DC signal to intrinsic safety equipment (such as valve controller and electric converter) in the hazardous area of the site.

·   Input signal 4~20mA or 0~20mA. The output signal is 4~20mA or 0~20mA.

·   Support for HART pass (optional).

·   This product requires a separate DC power supply. Voltage-type magnetic isolation between power supply-input-output.

Model /Selection Table:


    Model and code


     Basic model


     Output barrier

     Special features


     HART pass (only suitable for channel type 1 in 1 out option)


     Default, no special features

     Channel form


     1 in 1 out


     2 in 2 out

     Input signal


     4~20mA or 0~20mA

     Output signal


     4~20mA or 0~20mA (1 to 1 corresponds to the input signal)

     Power supply voltage


     Power supply (terminal) 20 ~ 32VDC


    Power supply (rail) 20~32VDC (special power supply DIN rail required)

     Service Code


    Product Service Code

   Selection example 
   Example 1: DSA-AOH11-AA-V1-QC9A ...... (1 input and 1 output, output safety barrier, HART pass, current signal 0/4~20mA, terminal power supply 20~32VDC) 
   Example 2: DSA-AO11-AA-V1-QC9A ...... (1 input and 1 output, output safety barrier, current signal 0/4~20mA, terminal power supply 20~32VDC) 
   Example 3: DSA-AO22-AA-V2-QC9A ...... (2 in 2 out, output safety barrier, current signal 0/4~20mA, rail supply 20~32VDC 
   Optional accessories
   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 Current

  4~20mA ;  0~20mA

   Input resistance



Output(intrinsically safe):

   Current output

  4~20mA ;  0~20mA

   Transmission characteristics

  1 to 1 corresponds to the input signal

   Current output load

  adaptive load 0~550Ω

   Output ripple

  <10mV p-p

   Input state when output open circuit fault



Power supply:

   Rated supply voltage


   Power supply voltage range


   Maximum current consumption

  45mA1 in 1 out);<75mA2 in 2 out


General parameters:

    Standard accuracy

    Typical value±0.1%FS

   Temperature drift


   Power on or storage time drift

    ±2μA (180)

   Load change impact


   Response time


   Power-on stabilization time


   Electrical isolation

     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 25mA (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

    LED backlight indication

    Power on, the product model on the panel is clearly visible through the LED backlight perspective, white.

    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

    On-site intrinsic safety equipment such as I/P converters, control valves, and indicators

    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

  Meet 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

DSA-AO Output safety barrier 1

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