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LOOP POWERED ISOLATOR ---------------------------------------------------------------------------LP2SI
 
 
  • 4~20 mA in, 4~20 mA out
  • Isolation between input and output :
         1.5 KV AC RMS / 1 minute,
         250 V AC RMS continuous
  • 0.1% transfer accuracy
  • 5 V loop drop
  • 0~500 Ω load without trimming
  • DIN rail mounting
  • No power supply required
  •  
    LP2SI is a loop powered isolator suitable for a variety of applications. It can be used, for example, to isolate the 4~20mA current signal from a 2-wire thermocouple transmitter or temperature controller, and pass it on to a PLC or datalogger. LP2SI eliminates earth and ground loop problems and simplifies interfacing. LP2SI does not require load trimming. Its accuracy is specified for any load between 0 & 500 ohms.
     
    SPECIFICATIONS            All specifications at ambient of 25 °C, unless specified otherwise.
     
    INPUT
    Input current 4~20 mA DC
    Voltage drop across <5 V DC with zero ohms load
    input terminals on output
    Reverse polarity Provided for current inputs
    Protection  
    Maximum input current 50 mA
    OUTPUT  
    Nominal current transfer 1:1 in the range of 4~20 mA
    ration  
    Permissible load 0~500 ohms without load trim
    resistance  
    ACCURACY  
    Linearity & calibration <0.1% of span
    (I out = I in ± 16 μA)
    Temperature coefficient 0.01% of span per °C
    of accuracy  
    ISOLATION  
    Input / Output isolation a) 1.5 KV AC RMS, 1 minute
    b) 250 V AC RMS, continuous
    CALIBRATION  
    Zero, span 20-turn potentiometers on front face
    ENCLOSURE  
    Material ABS plastic
    Dimensions 80(H) x 25(W) x 85(D) mm
    Mounting snap on for 35 mm DIN rail to DIN 46277
    Connection, single / ≤ 2.5 mm2, AWG 14
    stranded wires  
    Weight <200 grams
    Protection IP 20
    TEMPERATURE, HUMIDITY  
    Ambient, storage -20 to + 85 °C
    Ambient, operation -20 to +70 °C
    Relative humidity 0~95%
     
     

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